Fixed discord invite link

Use secrets.py for ssid and password.

.github/workflows/build.yml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 name: Build CI
 
 on: [pull_request, push]
@@ -34,11 +38,18 @@ jobs:
       with:
         repository: adafruit/actions-ci-circuitpython-libs
         path: actions-ci
-    - name: Install deps
+    - name: Install dependencies
+      # (e.g. - apt-get: gettext, etc; pip: circuitpython-build-tools, requirements.txt; etc.)
       run: |
         source actions-ci/install.sh
+    - name: Pip install pylint, Sphinx, pre-commit
+      run: |
+        pip install --force-reinstall pylint Sphinx sphinx-rtd-theme pre-commit
     - name: Library version
       run: git describe --dirty --always --tags
+    - name: Pre-commit hooks
+      run: |
+        pre-commit run --all-files
     - name: PyLint
       run: |
         pylint $( find . -path './adafruit*.py' )

.github/workflows/release.yml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 name: Release Actions
 
 on:

.gitignore

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 *.mpy
 .idea
 __pycache__

.pre-commit-config.yaml

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2020 Diego Elio Pettenò
+#
+# SPDX-License-Identifier: Unlicense
+
+repos:
+-   repo: https://github.com/python/black
+    rev: 19.10b0
+    hooks:
+    - id: black
+-   repo: https://github.com/fsfe/reuse-tool
+    rev: latest
+    hooks:
+    - id: reuse
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.3.0
+    hooks:
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace

.pylintrc

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 [MASTER]
 
 # A comma-separated list of package or module names from where C extensions may
@@ -52,7 +56,7 @@ confidence=
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
 # disable=import-error,print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call
-disable=print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error
+disable=print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error,bad-continuation
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option

.readthedocs.yml

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 python:
     version: 3
 requirements_file: requirements.txt

CODE_OF_CONDUCT.md

@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2014 Coraline Ada Ehmke
+SPDX-FileCopyrightText: 2019 Kattni Rembor for Adafruit Industries
+
+SPDX-License-Identifier: CC-BY-4.0
+-->
 # Adafruit Community Code of Conduct
 
 ## Our Pledge
@@ -34,6 +40,8 @@ Examples of unacceptable behavior by participants include:
 * Excessive or unwelcome helping; answering outside the scope of the question
   asked
 * Trolling, insulting/derogatory comments, and personal or political attacks
+* Promoting or spreading disinformation, lies, or conspiracy theories against
+  a person, group, organisation, project, or community
 * Public or private harassment
 * Publishing others' private information, such as a physical or electronic
   address, without explicit permission
@@ -72,10 +80,10 @@ You may report in the following ways:
 In any situation, you may send an email to <support@adafruit.com>.
 
 On the Adafruit Discord, you may send an open message from any channel
-to all Community Helpers by tagging @community helpers. You may also send an
-open message from any channel, or a direct message to @kattni#1507,
-@tannewt#4653, @Dan Halbert#1614, @cater#2442, @sommersoft#0222, or
-@Andon#8175.
+to all Community Moderators by tagging @community moderators. You may
+also send an open message from any channel, or a direct message to
+@kattni#1507, @tannewt#4653, @danh#1614, @cater#2442,
+@sommersoft#0222, @Mr. Certainly#0472 or @Andon#8175.
 
 Email and direct message reports will be kept confidential.
 

LICENSES/CC-BY-4.0.txt

@@ -0,0 +1,324 @@
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LICENSES/MIT.txt

@@ -0,0 +1,19 @@
+MIT License Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSES/Unlicense.txt

@@ -0,0 +1,20 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute
+this software, either in source code form or as a compiled binary, for any
+purpose, commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this
+software dedicate any and all copyright interest in the software to the public
+domain. We make this dedication for the benefit of the public at large and
+to the detriment of our heirs and successors. We intend this dedication to
+be an overt act of relinquishment in perpetuity of all present and future
+rights to this software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
+THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. For more information,
+please refer to <https://unlicense.org/>

README.rst

@@ -6,7 +6,7 @@ Introduction
     :alt: Documentation Status
 
 .. image:: https://img.shields.io/discord/327254708534116352.svg
-    :target: https://discord.gg/nBQh6qu
+    :target: https://adafru.it/discord
     :alt: Discord
 
 .. image:: https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/workflows/Build%20CI/badge.svg

README.rst.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT

adafruit_esp32spi/PWMOut.py

@@ -1,24 +1,7 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 Brent Rubell for Adafruit Industries
 #
-# Copyright (c) 2019 Brent Rubell for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
+
 """
 `PWMOut`
 ==============================
@@ -27,7 +10,8 @@ PWMOut CircuitPython API for ESP32SPI.
 * Author(s): Brent Rubell
 """
 
-class PWMOut():
+
+class PWMOut:
     """
     Implementation of CircuitPython PWMOut for ESP32SPI.
 
@@ -37,16 +21,18 @@ class PWMOut():
     :param int frequency: The target frequency in Hertz (32-bit).
     :param bool variable_frequency: True if the frequency will change over time.
     """
-    ESP32_PWM_PINS = set([0, 1, 2, 4, 5,
-                          12, 13, 14, 15,
-                          16, 17, 18, 19,
-                          21, 22, 23, 25,
-                          26, 27, 32, 33])
-    def __init__(self, esp, pwm_pin, *, frequency=500, duty_cycle=0, variable_frequency=False):
+
+    ESP32_PWM_PINS = set(
+        [0, 1, 2, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33]
+    )
+
+    def __init__(
+        self, esp, pwm_pin, *, frequency=500, duty_cycle=0, variable_frequency=False
+    ):
         if pwm_pin in self.ESP32_PWM_PINS:
             self._pwm_pin = pwm_pin
         else:
-            raise AttributeError("Pin %d is not a valid ESP32 GPIO Pin."%pwm_pin)
+            raise AttributeError("Pin %d is not a valid ESP32 GPIO Pin." % pwm_pin)
         self._esp = esp
         self._duty_cycle = duty_cycle
         self._freq = frequency
@@ -67,8 +53,10 @@ class PWMOut():
     def _is_deinited(self):
         """Checks if PWMOut object has been previously de-initalized"""
         if self._pwm_pin is None:
-            raise ValueError("PWMOut Object has been deinitialized and can no longer "
-                             "be used. Create a new PWMOut object.")
+            raise ValueError(
+                "PWMOut Object has been deinitialized and can no longer "
+                "be used. Create a new PWMOut object."
+            )
 
     @property
     def duty_cycle(self):

adafruit_esp32spi/adafruit_esp32spi.py

@@ -1,24 +1,7 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 ladyada for Adafruit Industries
 #
-# Copyright (c) 2019 ladyada for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
+
 """
 `adafruit_esp32spi`
 ================================================================================
@@ -83,6 +66,7 @@ _REQ_HOST_BY_NAME_CMD  = const(0x34)
 _GET_HOST_BY_NAME_CMD = const(0x35)
 _START_SCAN_NETWORKS = const(0x36)
 _GET_FW_VERSION_CMD = const(0x37)
+_SEND_UDP_DATA_CMD = const(0x39)
 _GET_TIME = const(0x3B)
 _GET_IDX_BSSID_CMD = const(0x3C)
 _GET_IDX_CHAN_CMD = const(0x3D)
@@ -90,6 +74,7 @@ _PING_CMD              = const(0x3E)
 
 _SEND_DATA_TCP_CMD = const(0x44)
 _GET_DATABUF_TCP_CMD = const(0x45)
+_INSERT_DATABUF_TCP_CMD = const(0x46)
 _SET_ENT_IDENT_CMD = const(0x4A)
 _SET_ENT_UNAME_CMD = const(0x4B)
 _SET_ENT_PASSWD_CMD = const(0x4C)
@@ -106,7 +91,7 @@ _SET_ANALOG_READ_CMD   = const(0x54)
 _START_CMD = const(0xE0)
 _END_CMD = const(0xEE)
 _ERR_CMD = const(0xEF)
-_REPLY_FLAG            = const(1<<7)
+_REPLY_FLAG = const(1 << 7)
 _CMD_FLAG = const(0)
 
 SOCKET_CLOSED = const(0)
@@ -140,15 +125,19 @@ ADC_ATTEN_DB_6   = const(2)
 ADC_ATTEN_DB_11 = const(3)
 # pylint: enable=bad-whitespace
 
+
 class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-instance-attributes
     """A class that will talk to an ESP32 module programmed with special firmware
     that lets it act as a fast an efficient WiFi co-processor"""
+
     TCP_MODE = const(0)
     UDP_MODE = const(1)
     TLS_MODE = const(2)
 
     # pylint: disable=too-many-arguments
-    def __init__(self, spi, cs_pin, ready_pin, reset_pin, gpio0_pin=None, *, debug=False):
+    def __init__(
+        self, spi, cs_pin, ready_pin, reset_pin, gpio0_pin=None, *, debug=False
+    ):
         self._debug = debug
         self.set_psk = False
         self.set_crt = False
@@ -168,6 +157,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if self._gpio0:
             self._gpio0.direction = Direction.INPUT
         self.reset()
+
     # pylint: enable=too-many-arguments
 
     def reset(self):
@@ -188,13 +178,13 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
     def _wait_for_ready(self):
         """Wait until the ready pin goes low"""
         if self._debug >= 3:
-            print("Wait for ESP32 ready", end='')
+            print("Wait for ESP32 ready", end="")
         times = time.monotonic()
         while (time.monotonic() - times) < 10:  # wait up to 10 seconds
             if not self._ready.value:  # we're ready!
                 break
             if self._debug >= 3:
-                print('.', end='')
+                print(".", end="")
                 time.sleep(0.05)
         else:
             raise RuntimeError("ESP32 not responding")
@@ -234,7 +224,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
             self._sendbuf[ptr] = len(param) & 0xFF
             ptr += 1
             for j, par in enumerate(param):
-                self._sendbuf[ptr+j] = par
+                self._sendbuf[ptr + j] = par
             ptr += len(param)
         self._sendbuf[ptr] = _END_CMD
 
@@ -246,9 +236,12 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
                     break
             else:
                 raise RuntimeError("ESP32 timed out on SPI select")
-            spi.write(self._sendbuf, start=0, end=packet_len)  # pylint: disable=no-member
+            spi.write(
+                self._sendbuf, start=0, end=packet_len
+            )  # pylint: disable=no-member
             if self._debug >= 3:
                 print("Wrote: ", [hex(b) for b in self._sendbuf[0:packet_len]])
+
     # pylint: disable=too-many-branches
 
     def _read_byte(self, spi):
@@ -318,12 +311,20 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
             print("Read %d: " % len(responses[0]), responses)
         return responses
 
-    def _send_command_get_response(self, cmd, params=None, *,
-                                   reply_params=1, sent_param_len_16=False,
-                                   recv_param_len_16=False):
+    def _send_command_get_response(
+        self,
+        cmd,
+        params=None,
+        *,
+        reply_params=1,
+        sent_param_len_16=False,
+        recv_param_len_16=False
+    ):
         """Send a high level SPI command, wait and return the response"""
         self._send_command(cmd, params, param_len_16=sent_param_len_16)
-        return self._wait_response_cmd(cmd, reply_params, param_len_16=recv_param_len_16)
+        return self._wait_response_cmd(
+            cmd, reply_params, param_len_16=recv_param_len_16
+        )
 
     @property
     def status(self):
@@ -351,9 +352,19 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         """A bytearray containing the MAC address of the ESP32"""
         if self._debug:
             print("MAC address")
-        resp = self._send_command_get_response(_GET_MACADDR_CMD, [b'\xFF'])
+        resp = self._send_command_get_response(_GET_MACADDR_CMD, [b"\xFF"])
         return resp[0]
 
+    @property
+    def MAC_address_actual(self):  # pylint: disable=invalid-name
+        """A bytearray containing the actual MAC address of the ESP32"""
+        if self._debug:
+            print("MAC address")
+        resp = self._send_command_get_response(_GET_MACADDR_CMD, [b"\xFF"])
+        new_resp = bytearray(resp[0])
+        new_resp = reversed(new_resp)
+        return new_resp
+
     def start_scan_networks(self):
         """Begin a scan of visible access points. Follow up with a call
         to 'get_scan_networks' for response"""
@@ -368,18 +379,18 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         'ssid', 'rssi', 'encryption', bssid, and channel entries, one for each AP found"""
         self._send_command(_SCAN_NETWORKS)
         names = self._wait_response_cmd(_SCAN_NETWORKS)
-        #print("SSID names:", names)
+        # print("SSID names:", names)
         APs = []  # pylint: disable=invalid-name
         for i, name in enumerate(names):
-            a_p = {'ssid': name}
+            a_p = {"ssid": name}
             rssi = self._send_command_get_response(_GET_IDX_RSSI_CMD, ((i,),))[0]
-            a_p['rssi'] = struct.unpack('<i', rssi)[0]
+            a_p["rssi"] = struct.unpack("<i", rssi)[0]
             encr = self._send_command_get_response(_GET_IDX_ENCT_CMD, ((i,),))[0]
-            a_p['encryption'] = encr[0]
+            a_p["encryption"] = encr[0]
             bssid = self._send_command_get_response(_GET_IDX_BSSID_CMD, ((i,),))[0]
-            a_p['bssid'] = bssid
+            a_p["bssid"] = bssid
             chan = self._send_command_get_response(_GET_IDX_CHAN_CMD, ((i,),))[0]
-            a_p['channel'] = chan[0]
+            a_p["channel"] = chan[0]
             APs.append(a_p)
         return APs
 
@@ -439,40 +450,44 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
 
     def _wifi_set_ap_passphrase(self, ssid, passphrase, channel):
         """Creates an Access point with SSID, passphrase, and Channel"""
-        resp = self._send_command_get_response(_SET_AP_PASSPHRASE_CMD, [ssid, passphrase, channel])
+        resp = self._send_command_get_response(
+            _SET_AP_PASSPHRASE_CMD, [ssid, passphrase, channel]
+        )
         if resp[0][0] != 1:
             raise RuntimeError("Failed to setup AP password")
 
     @property
     def ssid(self):
         """The name of the access point we're connected to"""
-        resp = self._send_command_get_response(_GET_CURR_SSID_CMD, [b'\xFF'])
+        resp = self._send_command_get_response(_GET_CURR_SSID_CMD, [b"\xFF"])
         return resp[0]
 
     @property
     def bssid(self):
         """The MAC-formatted service set ID of the access point we're connected to"""
-        resp = self._send_command_get_response(_GET_CURR_BSSID_CMD, [b'\xFF'])
+        resp = self._send_command_get_response(_GET_CURR_BSSID_CMD, [b"\xFF"])
         return resp[0]
 
     @property
     def rssi(self):
         """The receiving signal strength indicator for the access point we're
         connected to"""
-        resp = self._send_command_get_response(_GET_CURR_RSSI_CMD, [b'\xFF'])
-        return struct.unpack('<i', resp[0])[0]
+        resp = self._send_command_get_response(_GET_CURR_RSSI_CMD, [b"\xFF"])
+        return struct.unpack("<i", resp[0])[0]
 
     @property
     def network_data(self):
         """A dictionary containing current connection details such as the 'ip_addr',
         'netmask' and 'gateway'"""
-        resp = self._send_command_get_response(_GET_IPADDR_CMD, [b'\xFF'], reply_params=3)
-        return {'ip_addr': resp[0], 'netmask': resp[1], 'gateway': resp[2]}
+        resp = self._send_command_get_response(
+            _GET_IPADDR_CMD, [b"\xFF"], reply_params=3
+        )
+        return {"ip_addr": resp[0], "netmask": resp[1], "gateway": resp[2]}
 
     @property
     def ip_address(self):
         """Our local IP address"""
-        return self.network_data['ip_addr']
+        return self.network_data["ip_addr"]
 
     @property
     def is_connected(self):
@@ -495,7 +510,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
     def connect(self, secrets):
         """Connect to an access point using a secrets dictionary
         that contains a 'ssid' and 'password' entry"""
-        self.connect_AP(secrets['ssid'], secrets['password'])
+        self.connect_AP(secrets["ssid"], secrets["password"])
 
     def connect_AP(self, ssid, password, timeout_s=10):  # pylint: disable=invalid-name
         """
@@ -510,10 +525,10 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if self._debug:
             print("Connect to AP", ssid, password)
         if isinstance(ssid, str):
-            ssid = bytes(ssid, 'utf-8')
+            ssid = bytes(ssid, "utf-8")
         if password:
             if isinstance(password, str):
-                password = bytes(password, 'utf-8')
+                password = bytes(password, "utf-8")
             self.wifi_set_passphrase(ssid, password)
         else:
             self.wifi_set_network(ssid)
@@ -529,7 +544,9 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
             raise RuntimeError("No such ssid", ssid)
         raise RuntimeError("Unknown error 0x%02X" % stat)
 
-    def create_AP(self, ssid, password, channel=1, timeout=10): # pylint: disable=invalid-name
+    def create_AP(
+        self, ssid, password, channel=1, timeout=10
+    ):  # pylint: disable=invalid-name
         """
         Create an access point with the given name, password, and channel.
         Will wait until specified timeout seconds and return on success
@@ -550,10 +567,10 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if isinstance(channel, int):
             channel = bytes(channel)
         if isinstance(ssid, str):
-            ssid = bytes(ssid, 'utf-8')
+            ssid = bytes(ssid, "utf-8")
         if password:
             if isinstance(password, str):
-                password = bytes(password, 'utf-8')
+                password = bytes(password, "utf-8")
             self._wifi_set_ap_passphrase(ssid, password, channel)
         else:
             self._wifi_set_ap_network(ssid, channel)
@@ -574,7 +591,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
 
     def unpretty_ip(self, ip):  # pylint: disable=no-self-use, invalid-name
         """Converts a dotted-quad string to a bytearray IP address"""
-        octets = [int(x) for x in ip.split('.')]
+        octets = [int(x) for x in ip.split(".")]
         return bytes(octets)
 
     def get_host_by_name(self, hostname):
@@ -583,7 +600,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if self._debug:
             print("*** Get host by name")
         if isinstance(hostname, str):
-            hostname = bytes(hostname, 'utf-8')
+            hostname = bytes(hostname, "utf-8")
         resp = self._send_command_get_response(_REQ_HOST_BY_NAME_CMD, (hostname,))
         if resp[0][0] != 1:
             raise RuntimeError("Failed to request hostname")
@@ -598,7 +615,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         # ttl must be between 0 and 255
         ttl = max(0, min(ttl, 255))
         resp = self._send_command_get_response(_PING_CMD, (dest, (ttl,)))
-        return struct.unpack('<H', resp[0])[0]
+        return struct.unpack("<H", resp[0])[0]
 
     def get_socket(self):
         """Request a socket from the ESP32, will allocate and return a number that
@@ -621,19 +638,24 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         self._socknum_ll[0][0] = socket_num
         if self._debug:
             print("*** Open socket")
-        port_param = struct.pack('>H', port)
+        port_param = struct.pack(">H", port)
         if isinstance(dest, str):  # use the 5 arg version
-            dest = bytes(dest, 'utf-8')
-            resp = self._send_command_get_response(_START_CLIENT_TCP_CMD,
-                                                   (dest, b'\x00\x00\x00\x00',
+            dest = bytes(dest, "utf-8")
+            resp = self._send_command_get_response(
+                _START_CLIENT_TCP_CMD,
+                (
+                    dest,
+                    b"\x00\x00\x00\x00",
                     port_param,
                     self._socknum_ll[0],
-                                                    (conn_mode,)))
+                    (conn_mode,),
+                ),
+            )
         else:  # ip address, use 4 arg vesion
-            resp = self._send_command_get_response(_START_CLIENT_TCP_CMD,
-                                                   (dest, port_param,
-                                                    self._socknum_ll[0],
-                                                    (conn_mode,)))
+            resp = self._send_command_get_response(
+                _START_CLIENT_TCP_CMD,
+                (dest, port_param, self._socknum_ll[0], (conn_mode,)),
+            )
         if resp[0][0] != 1:
             raise RuntimeError("Could not connect to remote server")
 
@@ -643,28 +665,52 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         SOCKET_FIN_WAIT_2, SOCKET_CLOSE_WAIT, SOCKET_CLOSING, SOCKET_LAST_ACK, or
         SOCKET_TIME_WAIT"""
         self._socknum_ll[0][0] = socket_num
-        resp = self._send_command_get_response(_GET_CLIENT_STATE_TCP_CMD, self._socknum_ll)
+        resp = self._send_command_get_response(
+            _GET_CLIENT_STATE_TCP_CMD, self._socknum_ll
+        )
         return resp[0][0]
 
     def socket_connected(self, socket_num):
         """Test if a socket is connected to the destination, returns boolean true/false"""
         return self.socket_status(socket_num) == SOCKET_ESTABLISHED
 
-    def socket_write(self, socket_num, buffer):
+    def socket_write(self, socket_num, buffer, conn_mode=TCP_MODE):
         """Write the bytearray buffer to a socket"""
         if self._debug:
             print("Writing:", buffer)
         self._socknum_ll[0][0] = socket_num
         sent = 0
-        for chunk in range((len(buffer) // 64)+1):
-            resp = self._send_command_get_response(_SEND_DATA_TCP_CMD,
-                                                   (self._socknum_ll[0],
-                                                    memoryview(buffer)[(chunk*64):((chunk+1)*64)]),
-                                                   sent_param_len_16=True)
+        total_chunks = (len(buffer) // 64) + 1
+        send_command = _SEND_DATA_TCP_CMD
+        if conn_mode == self.UDP_MODE:  # UDP requires a different command to write
+            send_command = _INSERT_DATABUF_TCP_CMD
+        for chunk in range(total_chunks):
+            resp = self._send_command_get_response(
+                send_command,
+                (
+                    self._socknum_ll[0],
+                    memoryview(buffer)[(chunk * 64) : ((chunk + 1) * 64)],
+                ),
+                sent_param_len_16=True,
+            )
             sent += resp[0][0]
 
+        if conn_mode == self.UDP_MODE:
+            # UDP verifies chunks on write, not bytes
+            if sent != total_chunks:
+                raise RuntimeError(
+                    "Failed to write %d chunks (sent %d)" % (total_chunks, sent)
+                )
+            # UDP needs to finalize with this command, does the actual sending
+            resp = self._send_command_get_response(_SEND_UDP_DATA_CMD, self._socknum_ll)
+            if resp[0][0] != 1:
+                raise RuntimeError("Failed to send UDP data")
+            return
+
         if sent != len(buffer):
-            raise RuntimeError("Failed to send %d bytes (sent %d)" % (len(buffer), sent))
+            raise RuntimeError(
+                "Failed to send %d bytes (sent %d)" % (len(buffer), sent)
+            )
 
         resp = self._send_command_get_response(_DATA_SENT_TCP_CMD, self._socknum_ll)
         if resp[0][0] != 1:
@@ -674,7 +720,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         """Determine how many bytes are waiting to be read on the socket"""
         self._socknum_ll[0][0] = socket_num
         resp = self._send_command_get_response(_AVAIL_DATA_TCP_CMD, self._socknum_ll)
-        reply = struct.unpack('<H', resp[0])[0]
+        reply = struct.unpack("<H", resp[0])[0]
         if self._debug:
             print("ESPSocket: %d bytes available" % reply)
         return reply
@@ -682,14 +728,17 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
     def socket_read(self, socket_num, size):
         """Read up to 'size' bytes from the socket number. Returns a bytearray"""
         if self._debug:
-            print("Reading %d bytes from ESP socket with status %d" %
-                  (size, self.socket_status(socket_num)))
+            print(
+                "Reading %d bytes from ESP socket with status %d"
+                % (size, self.socket_status(socket_num))
+            )
         self._socknum_ll[0][0] = socket_num
-        resp = self._send_command_get_response(_GET_DATABUF_TCP_CMD,
-                                               (self._socknum_ll[0],
-                                                (size & 0xFF, (size >> 8) & 0xFF)),
+        resp = self._send_command_get_response(
+            _GET_DATABUF_TCP_CMD,
+            (self._socknum_ll[0], (size & 0xFF, (size >> 8) & 0xFF)),
             sent_param_len_16=True,
-                                               recv_param_len_16=True)
+            recv_param_len_16=True,
+        )
         return bytes(resp[0])
 
     def socket_connect(self, socket_num, dest, port, conn_mode=TCP_MODE):
@@ -701,6 +750,12 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
             print("*** Socket connect mode", conn_mode)
 
         self.socket_open(socket_num, dest, port, conn_mode=conn_mode)
+        if conn_mode == self.UDP_MODE:
+            # UDP doesn't actually establish a connection
+            # but the socket for writing is created via start_server
+            self.start_server(port, socket_num, conn_mode)
+            return True
+
         times = time.monotonic()
         while (time.monotonic() - times) < 3:  # wait 3 seconds
             if self.socket_connected(socket_num):
@@ -717,12 +772,14 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if resp[0][0] != 1:
             raise RuntimeError("Failed to close socket")
 
-    def start_server(self, port, socket_num, conn_mode=TCP_MODE, ip=None): # pylint: disable=invalid-name
+    def start_server(
+        self, port, socket_num, conn_mode=TCP_MODE, ip=None
+    ):  # pylint: disable=invalid-name
         """Opens a server on the specified port, using the ESP32's internal reference number"""
         if self._debug:
             print("*** starting server")
         self._socknum_ll[0][0] = socket_num
-        params = [struct.pack('>H', port), self._socknum_ll[0], (conn_mode,)]
+        params = [struct.pack(">H", port), self._socknum_ll[0], (conn_mode,)]
         if ip:
             params.insert(0, ip)
         resp = self._send_command_get_response(_START_SERVER_TCP_CMD, params)
@@ -756,8 +813,7 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
             pin_mode = 0
         else:
             pin_mode = mode
-        resp = self._send_command_get_response(_SET_PIN_MODE_CMD,
-                                               ((pin,), (pin_mode,)))
+        resp = self._send_command_get_response(_SET_PIN_MODE_CMD, ((pin,), (pin_mode,)))
         if resp[0][0] != 1:
             raise RuntimeError("Failed to set pin mode")
 
@@ -768,8 +824,9 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         :param int pin: ESP32 GPIO pin to write to.
         :param bool value: Value for the pin.
         """
-        resp = self._send_command_get_response(_SET_DIGITAL_WRITE_CMD,
-                                               ((pin,), (value,)))
+        resp = self._send_command_get_response(
+            _SET_DIGITAL_WRITE_CMD, ((pin,), (value,))
+        )
         if resp[0][0] != 1:
             raise RuntimeError("Failed to write to pin")
 
@@ -781,8 +838,9 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         :param float value: 0=off 1.0=full on
         """
         value = int(255 * analog_value)
-        resp = self._send_command_get_response(_SET_ANALOG_WRITE_CMD,
-                                               ((pin,), (value,)))
+        resp = self._send_command_get_response(
+            _SET_ANALOG_WRITE_CMD, ((pin,), (value,))
+        )
         if resp[0][0] != 1:
             raise RuntimeError("Failed to write to pin")
 
@@ -796,14 +854,14 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         fw_semver_maj = bytes(self.firmware_version).decode("utf-8")[2]
         assert int(fw_semver_maj) >= 5, "Please update nina-fw to 1.5.0 or above."
 
-        resp = self._send_command_get_response(_SET_DIGITAL_READ_CMD,
-                                               ((pin,),))[0]
+        resp = self._send_command_get_response(_SET_DIGITAL_READ_CMD, ((pin,),))[0]
         if resp[0] == 0:
             return False
-        elif resp[0] == 1:
+        if resp[0] == 1:
             return True
-        else:
-            raise ValueError("_SET_DIGITAL_READ response error: response is not boolean", resp[0])
+        raise ValueError(
+            "_SET_DIGITAL_READ response error: response is not boolean", resp[0]
+        )
 
     def set_analog_read(self, pin, atten=ADC_ATTEN_DB_11):
         """
@@ -816,11 +874,12 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         fw_semver_maj = bytes(self.firmware_version).decode("utf-8")[2]
         assert int(fw_semver_maj) >= 5, "Please update nina-fw to 1.5.0 or above."
 
-        resp = self._send_command_get_response(_SET_ANALOG_READ_CMD,
-                                               ((pin,), (atten,)))
-        resp_analog = struct.unpack('<i', resp[0])
+        resp = self._send_command_get_response(_SET_ANALOG_READ_CMD, ((pin,), (atten,)))
+        resp_analog = struct.unpack("<i", resp[0])
         if resp_analog[0] < 0:
-            raise ValueError("_SET_ANALOG_READ parameter error: invalid pin", resp_analog[0])
+            raise ValueError(
+                "_SET_ANALOG_READ parameter error: invalid pin", resp_analog[0]
+            )
         if self._debug:
             print(resp, resp_analog, resp_analog[0], 16 * resp_analog[0])
         return 16 * resp_analog[0]
@@ -829,12 +888,14 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         """The current unix timestamp"""
         if self.status == WL_CONNECTED:
             resp = self._send_command_get_response(_GET_TIME)
-            resp_time = struct.unpack('<i', resp[0])
+            resp_time = struct.unpack("<i", resp[0])
             if resp_time == (0,):
                 raise ValueError("_GET_TIME returned 0")
             return resp_time
         if self.status in (WL_AP_LISTENING, WL_AP_CONNECTED):
-            raise RuntimeError("Cannot obtain NTP while in AP mode, must be connected to internet")
+            raise RuntimeError(
+                "Cannot obtain NTP while in AP mode, must be connected to internet"
+            )
         raise RuntimeError("Must be connected to WiFi before obtaining NTP.")
 
     def set_certificate(self, client_certificate):
@@ -845,9 +906,11 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if self._debug:
             print("** Setting client certificate")
         if self.status == WL_CONNECTED:
-            raise RuntimeError("set_certificate must be called BEFORE a connection is established.")
+            raise RuntimeError(
+                "set_certificate must be called BEFORE a connection is established."
+            )
         if isinstance(client_certificate, str):
-            client_certificate = bytes(client_certificate, 'utf-8')
+            client_certificate = bytes(client_certificate, "utf-8")
         if "-----BEGIN CERTIFICATE" not in client_certificate:
             raise TypeError(".PEM must start with -----BEGIN CERTIFICATE")
         assert len(client_certificate) < 1300, ".PEM must be less than 1300 bytes."
@@ -865,9 +928,11 @@ class ESP_SPIcontrol:  # pylint: disable=too-many-public-methods, too-many-insta
         if self._debug:
             print("** Setting client's private key.")
         if self.status == WL_CONNECTED:
-            raise RuntimeError("set_private_key must be called BEFORE a connection is established.")
+            raise RuntimeError(
+                "set_private_key must be called BEFORE a connection is established."
+            )
         if isinstance(private_key, str):
-            private_key = bytes(private_key, 'utf-8')
+            private_key = bytes(private_key, "utf-8")
         if "-----BEGIN RSA" not in private_key:
             raise TypeError(".PEM must start with -----BEGIN RSA")
         assert len(private_key) < 1700, ".PEM must be less than 1700 bytes."

adafruit_esp32spi/adafruit_esp32spi_socket.py

@@ -1,24 +1,6 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 ladyada for Adafruit Industries
 #
-# Copyright (c) 2019 ladyada for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
 
 """
 `adafruit_esp32spi_socket`
@@ -37,11 +19,14 @@ from micropython import const
 from adafruit_esp32spi import adafruit_esp32spi
 
 _the_interface = None  # pylint: disable=invalid-name
+
+
 def set_interface(iface):
     """Helper to set the global internet interface"""
     global _the_interface  # pylint: disable=global-statement, invalid-name
     _the_interface = iface
 
+
 SOCK_STREAM = const(1)
 AF_INET = const(2)
 NO_SOCKET_AVAIL = const(255)
@@ -55,22 +40,28 @@ def getaddrinfo(host, port, family=0, socktype=0, proto=0, flags=0):
     if not isinstance(port, int):
         raise RuntimeError("Port must be an integer")
     ipaddr = _the_interface.get_host_by_name(host)
-    return [(AF_INET, socktype, proto, '', (ipaddr, port))]
+    return [(AF_INET, socktype, proto, "", (ipaddr, port))]
+
+
 # pylint: enable=too-many-arguments, unused-argument
 
 # pylint: disable=unused-argument, redefined-builtin, invalid-name
 class socket:
     """A simplified implementation of the Python 'socket' class, for connecting
     through an interface to a remote device"""
+
     # pylint: disable=too-many-arguments
-    def __init__(self, family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None, socknum=None):
+    def __init__(
+        self, family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None, socknum=None
+    ):
         if family != AF_INET:
             raise RuntimeError("Only AF_INET family supported")
         if type != SOCK_STREAM:
             raise RuntimeError("Only SOCK_STREAM type supported")
-        self._buffer = b''
+        self._buffer = b""
         self._socknum = socknum if socknum else _the_interface.get_socket()
         self.settimeout(0)
+
     # pylint: enable=too-many-arguments
 
     def connect(self, address, conntype=None):
@@ -80,9 +71,11 @@ class socket:
         host, port = address
         if conntype is None:
             conntype = _the_interface.TCP_MODE
-        if not _the_interface.socket_connect(self._socknum, host, port, conn_mode=conntype):
+        if not _the_interface.socket_connect(
+            self._socknum, host, port, conn_mode=conntype
+        ):
             raise RuntimeError("Failed to connect to host", host)
-        self._buffer = b''
+        self._buffer = b""
 
     def send(self, data):  # pylint: disable=no-self-use
         """Send some data to the socket"""
@@ -97,9 +90,9 @@ class socket:
 
     def readline(self):
         """Attempt to return as many bytes as we can up to but not including '\r\n'"""
-        #print("Socket readline")
+        # print("Socket readline")
         stamp = time.monotonic()
-        while b'\r\n' not in self._buffer:
+        while b"\r\n" not in self._buffer:
             # there's no line already in there, read some more
             avail = self.available()
             if avail:
@@ -107,7 +100,7 @@ class socket:
             elif self._timeout > 0 and time.monotonic() - stamp > self._timeout:
                 self.close()  # Make sure to close socket so that we don't exhaust sockets.
                 raise RuntimeError("Didn't receive full response, failing out")
-        firstline, self._buffer = self._buffer.split(b'\r\n', 1)
+        firstline, self._buffer = self._buffer.split(b"\r\n", 1)
         gc.collect()
         return firstline
 
@@ -115,7 +108,7 @@ class socket:
         """Reads some bytes from the connected remote address.
         :param int bufsize: maximum number of bytes to receive
         """
-        #print("Socket read", bufsize)
+        # print("Socket read", bufsize)
         if bufsize == 0:  # read as much as we can at the moment
             while True:
                 avail = self.available()
@@ -125,7 +118,7 @@ class socket:
                     break
             gc.collect()
             ret = self._buffer
-            self._buffer = b''
+            self._buffer = b""
             gc.collect()
             return ret
         stamp = time.monotonic()
@@ -133,7 +126,7 @@ class socket:
         to_read = bufsize - len(self._buffer)
         received = []
         while to_read > 0:
-            #print("Bytes to read:", to_read)
+            # print("Bytes to read:", to_read)
             avail = self.available()
             if avail:
                 stamp = time.monotonic()
@@ -143,13 +136,13 @@ class socket:
                 gc.collect()
             if self._timeout > 0 and time.monotonic() - stamp > self._timeout:
                 break
-        #print(received)
-        self._buffer += b''.join(received)
+        # print(received)
+        self._buffer += b"".join(received)
 
         ret = None
         if len(self._buffer) == bufsize:
             ret = self._buffer
-            self._buffer = b''
+            self._buffer = b""
         else:
             ret = self._buffer[:bufsize]
             self._buffer = self._buffer[bufsize:]
@@ -177,18 +170,19 @@ class socket:
         """Whether or not we are connected to the socket"""
         if self.socknum == NO_SOCKET_AVAIL:
             return False
-        elif self.available():
+        if self.available():
             return True
-        else:
         status = _the_interface.socket_status(self.socknum)
-            result = status not in (adafruit_esp32spi.SOCKET_LISTEN,
+        result = status not in (
+            adafruit_esp32spi.SOCKET_LISTEN,
             adafruit_esp32spi.SOCKET_CLOSED,
             adafruit_esp32spi.SOCKET_FIN_WAIT_1,
             adafruit_esp32spi.SOCKET_FIN_WAIT_2,
             adafruit_esp32spi.SOCKET_TIME_WAIT,
             adafruit_esp32spi.SOCKET_SYN_SENT,
             adafruit_esp32spi.SOCKET_SYN_RCVD,
-                                    adafruit_esp32spi.SOCKET_CLOSE_WAIT)
+            adafruit_esp32spi.SOCKET_CLOSE_WAIT,
+        )
         if not result:
             self.close()
             self._socknum = NO_SOCKET_AVAIL
@@ -202,4 +196,6 @@ class socket:
     def close(self):
         """Close the socket, after reading whatever remains"""
         _the_interface.socket_close(self._socknum)
+
+
 # pylint: enable=unused-argument, redefined-builtin, invalid-name

adafruit_esp32spi/adafruit_esp32spi_wifimanager.py

@@ -1,24 +1,6 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 Melissa LeBlanc-Williams for Adafruit Industries
 #
-# Copyright (c) 2019 Melissa LeBlanc-Williams for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
 
 """
 `adafruit_esp32spi_wifimanager`
@@ -42,12 +24,20 @@ class ESPSPI_WiFiManager:
     """
     A class to help manage the Wifi connection
     """
+
     NORMAL = const(1)
     ENTERPRISE = const(2)
 
     # pylint: disable=too-many-arguments
-    def __init__(self, esp, secrets, status_pixel=None, attempts=2,
-                 connection_type=NORMAL, debug=False):
+    def __init__(
+        self,
+        esp,
+        secrets,
+        status_pixel=None,
+        attempts=2,
+        connection_type=NORMAL,
+        debug=False,
+    ):
         """
         :param ESP_SPIcontrol esp: The ESP object we are using
         :param dict secrets: The WiFi and Adafruit IO secrets dict (See examples)
@@ -60,8 +50,8 @@ class ESPSPI_WiFiManager:
         # Read the settings
         self.esp = esp
         self.debug = debug
-        self.ssid = secrets['ssid']
-        self.password = secrets.get('password', None)
+        self.ssid = secrets["ssid"]
+        self.password = secrets.get("password", None)
         self.attempts = attempts
         self._connection_type = connection_type
         requests.set_socket(socket, esp)
@@ -69,18 +59,19 @@ class ESPSPI_WiFiManager:
         self.pixel_status(0)
 
         # Check for WPA2 Enterprise keys in the secrets dictionary and load them if they exist
-        if secrets.get('ent_ssid'):
-            self.ent_ssid = secrets['ent_ssid']
+        if secrets.get("ent_ssid"):
+            self.ent_ssid = secrets["ent_ssid"]
         else:
-            self.ent_ssid = secrets['ssid']
-        if secrets.get('ent_ident'):
-            self.ent_ident = secrets['ent_ident']
+            self.ent_ssid = secrets["ssid"]
+        if secrets.get("ent_ident"):
+            self.ent_ident = secrets["ent_ident"]
         else:
-            self.ent_ident = ''
-        if secrets.get('ent_user'):
-            self.ent_user = secrets['ent_user']
-        if secrets.get('ent_password'):
-            self.ent_password = secrets['ent_password']
+            self.ent_ident = ""
+        if secrets.get("ent_user"):
+            self.ent_user = secrets["ent_user"]
+        if secrets.get("ent_password"):
+            self.ent_password = secrets["ent_password"]
+
     # pylint: enable=too-many-arguments
 
     def reset(self):
@@ -101,7 +92,10 @@ class ESPSPI_WiFiManager:
             print("Firmware vers.", self.esp.firmware_version)
             print("MAC addr:", [hex(i) for i in self.esp.MAC_address])
             for access_pt in self.esp.scan_networks():
-                print("\t%s\t\tRSSI: %d" % (str(access_pt['ssid'], 'utf-8'), access_pt['rssi']))
+                print(
+                    "\t%s\t\tRSSI: %d"
+                    % (str(access_pt["ssid"], "utf-8"), access_pt["rssi"])
+                )
         if self._connection_type == ESPSPI_WiFiManager.NORMAL:
             self.connect_normal()
         elif self._connection_type == ESPSPI_WiFiManager.ENTERPRISE:
@@ -119,7 +113,9 @@ class ESPSPI_WiFiManager:
                 if self.debug:
                     print("Connecting to AP...")
                 self.pixel_status((100, 0, 0))
-                self.esp.connect_AP(bytes(self.ssid, 'utf-8'), bytes(self.password, 'utf-8'))
+                self.esp.connect_AP(
+                    bytes(self.ssid, "utf-8"), bytes(self.password, "utf-8")
+                )
                 failure_count = 0
                 self.pixel_status((0, 100, 0))
             except (ValueError, RuntimeError) as error:
@@ -143,9 +139,11 @@ class ESPSPI_WiFiManager:
                     print("Waiting for AP to be initialized...")
                 self.pixel_status((100, 0, 0))
                 if self.password:
-                    self.esp.create_AP(bytes(self.ssid, 'utf-8'), bytes(self.password, 'utf-8'))
+                    self.esp.create_AP(
+                        bytes(self.ssid, "utf-8"), bytes(self.password, "utf-8")
+                    )
                 else:
-                    self.esp.create_AP(bytes(self.ssid, 'utf-8'), None)
+                    self.esp.create_AP(bytes(self.ssid, "utf-8"), None)
                 failure_count = 0
                 self.pixel_status((0, 100, 0))
             except (ValueError, RuntimeError) as error:
@@ -162,15 +160,17 @@ class ESPSPI_WiFiManager:
         Attempt an enterprise style WiFi connection
         """
         failure_count = 0
-        self.esp.wifi_set_network(bytes(self.ent_ssid, 'utf-8'))
-        self.esp.wifi_set_entidentity(bytes(self.ent_ident, 'utf-8'))
-        self.esp.wifi_set_entusername(bytes(self.ent_user, 'utf-8'))
-        self.esp.wifi_set_entpassword(bytes(self.ent_password, 'utf-8'))
+        self.esp.wifi_set_network(bytes(self.ent_ssid, "utf-8"))
+        self.esp.wifi_set_entidentity(bytes(self.ent_ident, "utf-8"))
+        self.esp.wifi_set_entusername(bytes(self.ent_user, "utf-8"))
+        self.esp.wifi_set_entpassword(bytes(self.ent_password, "utf-8"))
         self.esp.wifi_set_entenable()
         while not self.esp.is_connected:
             try:
                 if self.debug:
-                    print("Waiting for the ESP32 to connect to the WPA2 Enterprise AP...")
+                    print(
+                        "Waiting for the ESP32 to connect to the WPA2 Enterprise AP..."
+                    )
                 self.pixel_status((100, 0, 0))
                 sleep(1)
                 failure_count = 0
@@ -312,7 +312,7 @@ class ESPSPI_WiFiManager:
         :type value: int or 3-value tuple
         """
         if self.statuspix:
-            if hasattr(self.statuspix, 'color'):
+            if hasattr(self.statuspix, "color"):
                 self.statuspix.color = value
             else:
                 self.statuspix.fill(value)

adafruit_esp32spi/adafruit_esp32spi_wsgiserver.py

@@ -1,24 +1,6 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 Matt Costi for Adafruit Industries
 #
-# Copyright (c) 2019 Matt Costi for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
 
 """
 `adafruit_esp32spi_wsgiserver`
@@ -53,12 +35,15 @@ import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 from adafruit_requests import parse_headers
 
 _the_interface = None  # pylint: disable=invalid-name
+
+
 def set_interface(iface):
     """Helper to set the global internet interface"""
     global _the_interface  # pylint: disable=global-statement, invalid-name
     _the_interface = iface
     socket.set_interface(iface)
 
+
 NO_SOCK_AVAIL = const(255)
 
 # pylint: disable=invalid-name
@@ -88,7 +73,10 @@ class WSGIServer:
         if self._debug:
             ip = _the_interface.pretty_ip(_the_interface.ip_address)
             print("Server available at {0}:{1}".format(ip, self.port))
-            print("Sever status: ", _the_interface.get_server_state(self._server_sock.socknum))
+            print(
+                "Sever status: ",
+                _the_interface.get_server_state(self._server_sock.socknum),
+            )
 
     def update_poll(self):
         """
@@ -97,7 +85,7 @@ class WSGIServer:
         the application callable will be invoked.
         """
         self.client_available()
-        if (self._client_sock and self._client_sock.available()):
+        if self._client_sock and self._client_sock.available():
             environ = self._get_environ(self._client_sock)
             result = self.application(environ, self._start_response)
             self.finish_response(result)
@@ -145,7 +133,9 @@ class WSGIServer:
                 # check for new client sock
                 if self._debug > 2:
                     print("checking for new client sock")
-                client_sock_num = _the_interface.socket_available(self._server_sock.socknum)
+                client_sock_num = _the_interface.socket_available(
+                    self._server_sock.socknum
+                )
                 sock = socket.socket(socknum=client_sock_num)
         else:
             print("Server has not been started, cannot check for clients!")
@@ -210,7 +200,7 @@ class WSGIServer:
             body = client.read()
             env["wsgi.input"] = io.StringIO(body)
         for name, value in headers.items():
-            key = "HTTP_" + name.replace('-', '_').upper()
+            key = "HTTP_" + name.replace("-", "_").upper()
             if key in env:
                 value = "{0},{1}".format(env[key], value)
             env[key] = value

adafruit_esp32spi/digitalio.py

@@ -1,24 +1,7 @@
-# The MIT License (MIT)
+# SPDX-FileCopyrightText: Copyright (c) 2019 Brent Rubell for Adafruit Industries
 #
-# Copyright (c) 2019 Brent Rubell for Adafruit Industries
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+# SPDX-License-Identifier: MIT
+
 """
 `digitalio`
 ==============================
@@ -31,6 +14,7 @@ https://github.com/adafruit/Adafruit_Blinka/blob/master/src/digitalio.py
 """
 from micropython import const
 
+
 class Pin:
     """
     Implementation of CircuitPython API Pin Handling
@@ -42,7 +26,8 @@ class Pin:
     NOTE: This class does not currently implement reading digital pins
     or the use of internal pull-up resistors.
     """
-     #pylint: disable=invalid-name
+
+    # pylint: disable=invalid-name
     IN = const(0x00)
     OUT = const(0x01)
     LOW = const(0x00)
@@ -51,17 +36,15 @@ class Pin:
     _mode = IN
     pin_id = None
 
-    ESP32_GPIO_PINS = set([0, 1, 2, 4, 5,
-                           12, 13, 14, 15,
-                           16, 17, 18, 19,
-                           21, 22, 23, 25,
-                           26, 27, 32, 33])
+    ESP32_GPIO_PINS = set(
+        [0, 1, 2, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33]
+    )
 
     def __init__(self, esp_pin, esp):
         if esp_pin in self.ESP32_GPIO_PINS:
             self.pin_id = esp_pin
         else:
-            raise AttributeError("Pin %d is not a valid ESP32 GPIO Pin."%esp_pin)
+            raise AttributeError("Pin %d is not a valid ESP32 GPIO Pin." % esp_pin)
         self._esp = esp
 
     def init(self, mode=IN):
@@ -92,36 +75,46 @@ class Pin:
             else:
                 raise RuntimeError("Invalid value for pin")
         else:
-            raise NotImplementedError("digitalRead not currently implemented in esp32spi")
+            raise NotImplementedError(
+                "digitalRead not currently implemented in esp32spi"
+            )
 
     def __repr__(self):
         return str(self.pin_id)
 
+
 # pylint: disable = too-few-public-methods
-class DriveMode():
+class DriveMode:
     """DriveMode Enum."""
+
     PUSH_PULL = None
     OPEN_DRAIN = None
+
+
 DriveMode.PUSH_PULL = DriveMode()
 DriveMode.OPEN_DRAIN = DriveMode()
 
 
-class Direction():
+class Direction:
     """DriveMode Enum."""
+
     INPUT = None
     OUTPUT = None
+
+
 Direction.INPUT = Direction()
 Direction.OUTPUT = Direction()
 
 
-class DigitalInOut():
+class DigitalInOut:
     """Implementation of DigitalIO module for ESP32SPI.
 
     :param ESP_SPIcontrol esp: The ESP object we are using.
     :param int pin: Valid ESP32 GPIO Pin, predefined in ESP32_GPIO_PINS.
     """
+
     _pin = None
-    #pylint: disable = attribute-defined-outside-init
+    # pylint: disable = attribute-defined-outside-init
     def __init__(self, esp, pin):
         self._esp = esp
         self._pin = Pin(pin, self._esp)
@@ -150,7 +143,9 @@ class DigitalInOut():
         """Sets the pull and then switch to read in digital values.
         :param Pull pull: Pull configuration for the input.
         """
-        raise NotImplementedError("Digital reads are not currently supported in ESP32SPI.")
+        raise NotImplementedError(
+            "Digital reads are not currently supported in ESP32SPI."
+        )
 
     @property
     def direction(self):
@@ -175,7 +170,7 @@ class DigitalInOut():
     @property
     def value(self):
         """Returns the digital logic level value of the pin."""
-        return self._pin.value() is 1
+        return self._pin.value() == 1
 
     @value.setter
     def value(self, val):
@@ -204,6 +199,8 @@ class DigitalInOut():
         """
         self.__drive_mode = mode
         if mode is DriveMode.OPEN_DRAIN:
-            raise NotImplementedError('Drive mode %s not implemented in ESP32SPI.'%mode)
-        elif mode is DriveMode.PUSH_PULL:
+            raise NotImplementedError(
+                "Drive mode %s not implemented in ESP32SPI." % mode
+            )
+        if mode is DriveMode.PUSH_PULL:
             self._pin.init(mode=Pin.OUT)

docs/_static/favicon.ico.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2018 Phillip Torrone for Adafruit Industries
+
+SPDX-License-Identifier: CC-BY-4.0

docs/api.rst.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT

docs/conf.py

@@ -1,8 +1,13 @@
 # -*- coding: utf-8 -*-
 
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
 import os
 import sys
-sys.path.insert(0, os.path.abspath('..'))
+
+sys.path.insert(0, os.path.abspath(".."))
 
 # -- General configuration ------------------------------------------------
 
@@ -10,10 +15,10 @@ sys.path.insert(0, os.path.abspath('..'))
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.napoleon',
-    'sphinx.ext.todo',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.todo",
 ]
 
 # TODO: Please Read!
@@ -23,29 +28,36 @@ extensions = [
 # autodoc_mock_imports = ["digitalio", "busio"]
 
 
-intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/busdevice/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
+intersphinx_mapping = {
+    "python": ("https://docs.python.org/3.4", None),
+    "BusDevice": (
+        "https://circuitpython.readthedocs.io/projects/busdevice/en/latest/",
+        None,
+    ),
+    "CircuitPython": ("https://circuitpython.readthedocs.io/en/latest/", None),
+}
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'Adafruit ESP32SPI Library'
-copyright = u'2019 ladyada'
-author = u'ladyada'
+project = "Adafruit ESP32SPI Library"
+copyright = "2019 ladyada"
+author = "ladyada"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'1.0'
+version = "1.0"
 # The full version, including alpha/beta/rc tags.
-release = u'1.0'
+release = "1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -57,7 +69,7 @@ language = None
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', '.env', 'CODE_OF_CONDUCT.md']
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store", ".env", "CODE_OF_CONDUCT.md"]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
@@ -69,7 +81,7 @@ default_role = "any"
 add_function_parentheses = True
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False
@@ -84,32 +96,33 @@ napoleon_numpy_docstring = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+on_rtd = os.environ.get("READTHEDOCS", None) == "True"
 
 if not on_rtd:  # only import and set the theme if we're building docs locally
     try:
         import sphinx_rtd_theme
-        html_theme = 'sphinx_rtd_theme'
-        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), '.']
+
+        html_theme = "sphinx_rtd_theme"
+        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), "."]
     except:
-        html_theme = 'default'
-        html_theme_path = ['.']
+        html_theme = "default"
+        html_theme_path = ["."]
 else:
-    html_theme_path = ['.']
+    html_theme_path = ["."]
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # The name of an image file (relative to this directory) to use as a favicon of
 # the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
 #
-html_favicon = '_static/favicon.ico'
+html_favicon = "_static/favicon.ico"
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'AdafruitEsp32spiLibrarydoc'
+htmlhelp_basename = "AdafruitEsp32spiLibrarydoc"
 
 # -- Options for LaTeX output ---------------------------------------------
 
@@ -117,15 +130,12 @@ latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
     #
     # 'papersize': 'letterpaper',
-
     # The font size ('10pt', '11pt' or '12pt').
     #
     # 'pointsize': '10pt',
-
     # Additional stuff for the LaTeX preamble.
     #
     # 'preamble': '',
-
     # Latex figure (float) alignment
     #
     # 'figure_align': 'htbp',
@@ -135,8 +145,13 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'AdafruitESP32SPILibrary.tex', u'AdafruitESP32SPI Library Documentation',
-     author, 'manual'),
+    (
+        master_doc,
+        "AdafruitESP32SPILibrary.tex",
+        "AdafruitESP32SPI Library Documentation",
+        author,
+        "manual",
+    ),
 ]
 
 # -- Options for manual page output ---------------------------------------
@@ -144,8 +159,13 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    (master_doc, 'AdafruitESP32SPIlibrary', u'Adafruit ESP32SPI Library Documentation',
-     [author], 1)
+    (
+        master_doc,
+        "AdafruitESP32SPIlibrary",
+        "Adafruit ESP32SPI Library Documentation",
+        [author],
+        1,
+    )
 ]
 
 # -- Options for Texinfo output -------------------------------------------
@@ -154,7 +174,13 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'AdafruitESP32SPILibrary', u'Adafruit ESP32SPI Library Documentation',
-     author, 'AdafruitESP32SPILibrary', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "AdafruitESP32SPILibrary",
+        "Adafruit ESP32SPI Library Documentation",
+        author,
+        "AdafruitESP32SPILibrary",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]

docs/examples.rst.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT

docs/index.rst.license

@@ -0,0 +1,3 @@
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT

examples/esp32spi_aio_post.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import time
 import board
 import busio
@@ -28,7 +31,9 @@ esp32_reset = DigitalInOut(board.ESP_RESET)
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
 esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
 """Use below for Most Boards"""
-status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+status_light = neopixel.NeoPixel(
+    board.NEOPIXEL, 1, brightness=0.2
+)  # Uncomment for Most Boards
 """Uncomment below for ItsyBitsy M4"""
 # status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
 # Uncomment below for an externally defined RGB LED
@@ -44,14 +49,19 @@ counter = 0
 
 while True:
     try:
-        print("Posting data...", end='')
+        print("Posting data...", end="")
         data = counter
-        feed = 'test'
-        payload = {'value':data}
+        feed = "test"
+        payload = {"value": data}
         response = wifi.post(
-            "https://io.adafruit.com/api/v2/"+secrets['aio_username']+"/feeds/"+feed+"/data",
+            "https://io.adafruit.com/api/v2/"
+            + secrets["aio_username"]
+            + "/feeds/"
+            + feed
+            + "/data",
             json=payload,
-            headers={"X-AIO-KEY":secrets['aio_key']})
+            headers={"X-AIO-KEY": secrets["aio_key"]},
+        )
         print(response.json())
         response.close()
         counter = counter + 1

examples/esp32spi_cheerlights.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import time
 import board
 import busio
@@ -27,9 +30,11 @@ esp32_reset = DigitalInOut(board.D5)
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
 esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
 """Use below for Most Boards"""
-status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+status_light = neopixel.NeoPixel(
+    board.NEOPIXEL, 1, brightness=0.2
+)  # Uncomment for Most Boards
 """Uncomment below for ItsyBitsy M4"""
-#status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
+# status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
 wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
 
 # neopixels
@@ -60,7 +65,7 @@ while True:
         color = int(value[1:], 16)
         red = color >> 16 & 0xFF
         green = color >> 8 & 0xFF
-        blue = color& 0xFF
+        blue = color & 0xFF
         gamma_corrected = fancy.gamma_adjust(fancy.CRGB(red, green, blue)).pack()
 
         pixels.fill(gamma_corrected)

examples/esp32spi_localtime.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import time
 import board
 import busio
@@ -24,9 +27,11 @@ esp32_reset = DigitalInOut(board.ESP_RESET)
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
 esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
 """Use below for Most Boards"""
-status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+status_light = neopixel.NeoPixel(
+    board.NEOPIXEL, 1, brightness=0.2
+)  # Uncomment for Most Boards
 """Uncomment below for ItsyBitsy M4"""
-#status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
+# status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
 wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
 
 the_rtc = rtc.RTC()
@@ -42,18 +47,20 @@ while True:
         continue
 
 json = response.json()
-current_time = json['datetime']
-the_date, the_time = current_time.split('T')
-year, month, mday = [int(x) for x in the_date.split('-')]
-the_time = the_time.split('.')[0]
-hours, minutes, seconds = [int(x) for x in the_time.split(':')]
+current_time = json["datetime"]
+the_date, the_time = current_time.split("T")
+year, month, mday = [int(x) for x in the_date.split("-")]
+the_time = the_time.split(".")[0]
+hours, minutes, seconds = [int(x) for x in the_time.split(":")]
 
 # We can also fill in these extra nice things
-year_day = json['day_of_year']
-week_day = json['day_of_week']
-is_dst = json['dst']
+year_day = json["day_of_year"]
+week_day = json["day_of_week"]
+is_dst = json["dst"]
 
-now = time.struct_time((year, month, mday, hours, minutes, seconds, week_day, year_day, is_dst))
+now = time.struct_time(
+    (year, month, mday, hours, minutes, seconds, week_day, year_day, is_dst)
+)
 print(now)
 the_rtc.datetime = now
 

examples/esp32spi_secrets.py

@@ -1,10 +1,13 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 # This file is where you keep secret settings, passwords, and tokens!
 # If you put them in the code you risk committing that info or sharing it
 
 secrets = {
-    'ssid' : 'yourssid',
-    'password' : 'yourpassword',
-    'timezone' : "America/New_York", # Check http://worldtimeapi.org/timezones
-    'aio_username' : 'youraiousername',
-    'aio_key' : 'youraiokey',
+    "ssid": "yourssid",
+    "password": "yourpassword",
+    "timezone": "America/New_York",  # Check http://worldtimeapi.org/timezones
+    "aio_username": "youraiousername",
+    "aio_key": "youraiokey",
 }

examples/esp32spi_simpletest.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import board
 import busio
 from digitalio import DigitalInOut
@@ -5,6 +8,13 @@ import adafruit_esp32spi.adafruit_esp32spi_socket as socket
 from adafruit_esp32spi import adafruit_esp32spi
 import adafruit_requests as requests
 
+# Get wifi details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
 print("ESP32 SPI webclient test")
 
 TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
@@ -16,12 +26,18 @@ esp32_cs = DigitalInOut(board.ESP_CS)
 esp32_ready = DigitalInOut(board.ESP_BUSY)
 esp32_reset = DigitalInOut(board.ESP_RESET)
 
-# If you have an ItsyBitsy Airlift:
+# If you have an AirLift Shield:
+# esp32_cs = DigitalInOut(board.D10)
+# esp32_ready = DigitalInOut(board.D7)
+# esp32_reset = DigitalInOut(board.D5)
+
+# If you have an AirLift Featherwing or ItsyBitsy Airlift:
 # esp32_cs = DigitalInOut(board.D13)
 # esp32_ready = DigitalInOut(board.D11)
 # esp32_reset = DigitalInOut(board.D12)
 
 # If you have an externally connected ESP32:
+# NOTE: You may need to change the pins to reflect your wiring
 # esp32_cs = DigitalInOut(board.D9)
 # esp32_ready = DigitalInOut(board.D10)
 # esp32_reset = DigitalInOut(board.D5)
@@ -37,34 +53,36 @@ print("Firmware vers.", esp.firmware_version)
 print("MAC addr:", [hex(i) for i in esp.MAC_address])
 
 for ap in esp.scan_networks():
-    print("\t%s\t\tRSSI: %d" % (str(ap['ssid'], 'utf-8'), ap['rssi']))
+    print("\t%s\t\tRSSI: %d" % (str(ap["ssid"], "utf-8"), ap["rssi"]))
 
 print("Connecting to AP...")
 while not esp.is_connected:
     try:
-        esp.connect_AP(b'MY_SSID_NAME', b'MY_SSID_PASSWORD')
+        esp.connect_AP(secrets["ssid"], secrets["password"])
     except RuntimeError as e:
-        print("could not connect to AP, retrying: ",e)
+        print("could not connect to AP, retrying: ", e)
         continue
-print("Connected to", str(esp.ssid, 'utf-8'), "\tRSSI:", esp.rssi)
+print("Connected to", str(esp.ssid, "utf-8"), "\tRSSI:", esp.rssi)
 print("My IP address is", esp.pretty_ip(esp.ip_address))
-print("IP lookup adafruit.com: %s" % esp.pretty_ip(esp.get_host_by_name("adafruit.com")))
+print(
+    "IP lookup adafruit.com: %s" % esp.pretty_ip(esp.get_host_by_name("adafruit.com"))
+)
 print("Ping google.com: %d ms" % esp.ping("google.com"))
 
-#esp._debug = True
+# esp._debug = True
 print("Fetching text from", TEXT_URL)
 r = requests.get(TEXT_URL)
-print('-'*40)
+print("-" * 40)
 print(r.text)
-print('-'*40)
+print("-" * 40)
 r.close()
 
 print()
 print("Fetching json from", JSON_URL)
 r = requests.get(JSON_URL)
-print('-'*40)
+print("-" * 40)
 print(r.json())
-print('-'*40)
+print("-" * 40)
 r.close()
 
 print("Done!")

examples/esp32spi_wpa2ent_aio_post.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import time
 import board
 import busio
@@ -30,23 +33,32 @@ except AttributeError:
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
 esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
 """Use below for Most Boards"""
-status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
+status_light = neopixel.NeoPixel(
+    board.NEOPIXEL, 1, brightness=0.2
+)  # Uncomment for Most Boards
 """Uncomment below for ItsyBitsy M4"""
-#status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
-wifi = ESPSPI_WiFiManager(esp, secrets, status_light, connection_type=ESPSPI_WiFiManager.ENTERPRISE)
+# status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=0.2)
+wifi = ESPSPI_WiFiManager(
+    esp, secrets, status_light, connection_type=ESPSPI_WiFiManager.ENTERPRISE
+)
 
 counter = 0
 
 while True:
     try:
-        print("Posting data...", end='')
+        print("Posting data...", end="")
         data = counter
-        feed = 'test'
-        payload = {'value':data}
+        feed = "test"
+        payload = {"value": data}
         response = wifi.post(
-            "https://io.adafruit.com/api/v2/"+secrets['aio_username']+"/feeds/"+feed+"/data",
+            "https://io.adafruit.com/api/v2/"
+            + secrets["aio_username"]
+            + "/feeds/"
+            + feed
+            + "/data",
             json=payload,
-            headers={"X-AIO-KEY":secrets['aio_key']})
+            headers={"X-AIO-KEY": secrets["aio_key"]},
+        )
         print(response.json())
         response.close()
         counter = counter + 1

examples/esp32spi_wpa2ent_simpletest.py

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 # Example code implementing WPA2 Enterprise mode
 #
 # This code requires firmware version 1.3.0, or newer, running
@@ -21,8 +24,12 @@ import adafruit_requests as requests
 # support Python 3.x and thus, CircuitPython
 def version_compare(version1, version2):
     def normalize(v):
-        return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")]
-    return (normalize(version1) > normalize(version2)) - (normalize(version1) < normalize(version2))
+        return [int(x) for x in re.sub(r"(\.0+)*$", "", v).split(".")]
+
+    return (normalize(version1) > normalize(version2)) - (
+        normalize(version1) < normalize(version2)
+    )
+
 
 print("ESP32 SPI WPA2 Enterprise test")
 
@@ -48,30 +55,31 @@ if esp.status == adafruit_esp32spi.WL_IDLE_STATUS:
 
 # Get the ESP32 fw version number, remove trailing byte off the returned bytearray
 # and then convert it to a string for prettier printing and later comparison
-firmware_version = ''.join([chr(b) for b in esp.firmware_version[:-1]])
+firmware_version = "".join([chr(b) for b in esp.firmware_version[:-1]])
 print("Firmware vers.", firmware_version)
 
 print("MAC addr:", [hex(i) for i in esp.MAC_address])
 
 # WPA2 Enterprise support was added in fw ver 1.3.0. Check that the ESP32
 # is running at least that version, otherwise, bail out
-assert version_compare(firmware_version, "1.3.0") >= 0, (
-    "Incorrect ESP32 firmware version; >= 1.3.0 required.")
+assert (
+    version_compare(firmware_version, "1.3.0") >= 0
+), "Incorrect ESP32 firmware version; >= 1.3.0 required."
 
 # Set up the SSID you would like to connect to
 # Note that we need to call wifi_set_network prior
 # to calling wifi_set_enable.
-esp.wifi_set_network(b'YOUR_SSID_HERE')
+esp.wifi_set_network(b"YOUR_SSID_HERE")
 
 # If your WPA2 Enterprise network requires an anonymous
 # identity to be set, you may set that here
-esp.wifi_set_entidentity(b'')
+esp.wifi_set_entidentity(b"")
 
 # Set the WPA2 Enterprise username you'd like to use
-esp.wifi_set_entusername(b'MY_USERNAME')
+esp.wifi_set_entusername(b"MY_USERNAME")
 
 # Set the WPA2 Enterprise password you'd like to use
-esp.wifi_set_entpassword(b'MY_PASSWORD')
+esp.wifi_set_entpassword(b"MY_PASSWORD")
 
 # Once the network settings have been configured,
 # we need to enable WPA2 Enterprise mode on the ESP32
@@ -80,13 +88,15 @@ esp.wifi_set_entenable()
 # Wait for the network to come up
 print("Connecting to AP...")
 while not esp.is_connected:
-    print(".", end = "")
+    print(".", end="")
     time.sleep(2)
 
 print("")
-print("Connected to", str(esp.ssid, 'utf-8'), "\tRSSI:", esp.rssi)
+print("Connected to", str(esp.ssid, "utf-8"), "\tRSSI:", esp.rssi)
 print("My IP address is", esp.pretty_ip(esp.ip_address))
-print("IP lookup adafruit.com: %s" % esp.pretty_ip(esp.get_host_by_name("adafruit.com")))
+print(
+    "IP lookup adafruit.com: %s" % esp.pretty_ip(esp.get_host_by_name("adafruit.com"))
+)
 print("Ping google.com: %d ms" % esp.ping("google.com"))
 
 print("Done!")

examples/gpio/esp32spi_gpio.py

@@ -0,0 +1,177 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import random
+import board
+from digitalio import DigitalInOut, Direction
+import pulseio
+from adafruit_esp32spi import adafruit_esp32spi
+
+
+# ESP32SPI Digital and Analog Pin Reads & Writes
+
+# This example targets a Feather M4 or ItsyBitsy M4 as the CircuitPython MCU,
+# along with either an ESP32 Feather or ESP32 Breakout as Wi-Fi co-processor.
+# You may need to choose different pins for other targets.
+
+
+def esp_reset_all():
+    # esp.reset() will reset the ESP32 using its RST pin
+    # side effect is re-initializing ESP32 pin modes and debug output
+    esp.reset()
+    time.sleep(1)
+    # (re-)set NINA serial debug on ESP32 TX
+    esp.set_esp_debug(True)  # False, True
+    # (re-)set digital pin modes
+    esp_init_pin_modes(ESP_D_R_PIN, ESP_D_W_PIN)
+
+
+def esp_init_pin_modes(din, dout):
+    # ESP32 Digital Input
+    esp.set_pin_mode(din, 0x0)
+
+    # ESP32 Digital Output (no output on pins 34-39)
+    esp.set_pin_mode(dout, 0x1)
+
+
+# M4 R/W Pin Assignments
+M4_D_W_PIN = DigitalInOut(board.A1)  # digital write to ESP_D_R_PIN
+M4_D_W_PIN.direction = Direction.OUTPUT
+M4_A_R_PIN = pulseio.PulseIn(board.A0, maxlen=64)  # PWM read from ESP_A_W_PIN
+M4_A_R_PIN.pause()
+
+# ESP32 R/W Pin assignments & connections
+ESP_D_R_PIN = 12  # digital read from M4_D_W_PIN
+ESP_D_W_PIN = 13  # digital write to Red LED on Feather ESP32 and ESP32 Breakout
+# ESP32 Analog Input using ADC1
+# esp.set_pin_mode(36, 0x0)  # Hall Effect Sensor
+# esp.set_pin_mode(37, 0x0)  # Not Exposed
+# esp.set_pin_mode(38, 0x0)  # Not Exposed
+# esp.set_pin_mode(39, 0x0)  # Hall Effect Sensor
+# esp.set_pin_mode(32, 0x0)  # INPUT OK
+# esp.set_pin_mode(33, 0x0)  # DO NOT USE: ESP32SPI Busy/!Rdy
+# esp.set_pin_mode(34, 0x0)  # INPUT OK
+# esp.set_pin_mode(35, 0x0)  # INPUT OK (1/2 of Battery on ESP32 Feather)
+ESP_A_R_PIN = 32  # analog read from 10k potentiometer
+# ESP32 Analog (PWM/LEDC) Output (no output on pins 34-39)
+ESP_A_W_PIN = 27  # analog (PWM) write to M4_A_R_PIN
+
+spi = board.SPI()
+# Airlift FeatherWing & Bitsy Add-On compatible
+esp32_cs = DigitalInOut(board.D13)  # M4 Red LED
+esp32_ready = DigitalInOut(board.D11)
+esp32_reset = DigitalInOut(board.D12)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+
+esp_reset_all()
+
+espfirmware = ""
+for _ in esp.firmware_version:
+    if _ != 0:
+        espfirmware += "{:c}".format(_)
+print("ESP32 Firmware:", espfirmware)
+
+print(
+    "ESP32 MAC:      {5:02X}:{4:02X}:{3:02X}:{2:02X}:{1:02X}:{0:02X}".format(
+        *esp.MAC_address
+    )
+)
+
+# initial digital write values
+m4_d_w_val = False
+esp_d_w_val = False
+
+while True:
+    print("\nESP32 DIGITAL:")
+
+    # ESP32 digital read
+    try:
+        M4_D_W_PIN.value = m4_d_w_val
+        print("M4 wrote:", m4_d_w_val, end=" ")
+        # b/c ESP32 might have reset out from under us
+        esp_init_pin_modes(ESP_D_R_PIN, ESP_D_W_PIN)
+        esp_d_r_val = esp.set_digital_read(ESP_D_R_PIN)
+        print("--> ESP read:", esp_d_r_val)
+    except (RuntimeError, AssertionError) as e:
+        print("ESP32 Error", e)
+        esp_reset_all()
+
+    # ESP32 digital write
+    try:
+        # b/c ESP32 might have reset out from under us
+        esp_init_pin_modes(ESP_D_R_PIN, ESP_D_W_PIN)
+        esp.set_digital_write(ESP_D_W_PIN, esp_d_w_val)
+        print("ESP wrote:", esp_d_w_val, "--> Red LED")
+    except (RuntimeError) as e:
+        print("ESP32 Error", e)
+        esp_reset_all()
+
+    print("ESP32 ANALOG:")
+
+    # ESP32 analog read
+    try:
+        esp_a_r_val = esp.set_analog_read(ESP_A_R_PIN)
+        print(
+            "Potentiometer --> ESP read: ",
+            esp_a_r_val,
+            " (",
+            "{:1.1f}".format(esp_a_r_val * 3.3 / 65536),
+            "v)",
+            sep="",
+        )
+    except (RuntimeError, AssertionError) as e:
+        print("ESP32 Error", e)
+        esp_reset_all()
+
+    # ESP32 analog write
+    try:
+        # don't set the low end to 0 or the M4's pulseio read will stall
+        esp_a_w_val = random.uniform(0.1, 0.9)
+        esp.set_analog_write(ESP_A_W_PIN, esp_a_w_val)
+        print(
+            "ESP wrote: ",
+            "{:1.2f}".format(esp_a_w_val),
+            " (",
+            "{:d}".format(int(esp_a_w_val * 65536)),
+            ")",
+            " (",
+            "{:1.1f}".format(esp_a_w_val * 3.3),
+            "v)",
+            sep="",
+            end=" ",
+        )
+
+        # ESP32 "analog" write is a 1000Hz PWM
+        # use pulseio to extract the duty cycle
+        M4_A_R_PIN.clear()
+        M4_A_R_PIN.resume()
+        while len(M4_A_R_PIN) < 2:
+            pass
+        M4_A_R_PIN.pause()
+        duty = M4_A_R_PIN[0] / (M4_A_R_PIN[0] + M4_A_R_PIN[1])
+        print(
+            "--> M4 read: ",
+            "{:1.2f}".format(duty),
+            " (",
+            "{:d}".format(int(duty * 65536)),
+            ")",
+            " (",
+            "{:1.1f}".format(duty * 3.3),
+            "v)",
+            " [len=",
+            len(M4_A_R_PIN),
+            "]",
+            sep="",
+        )
+
+    except (RuntimeError) as e:
+        print("ESP32 Error", e)
+        esp_reset_all()
+
+    # toggle digital write values
+    m4_d_w_val = not m4_d_w_val
+    esp_d_w_val = not esp_d_w_val
+
+    time.sleep(5)

examples/gpio/gpio.md

@@ -0,0 +1,92 @@
+<!--
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT
+-->
+
+# Using ESP32 co-processor GPIO pins with CircuitPython ESP32SPI
+
+As of NINA firmware version 1.3.1, the ESP32SPI library can be used to write digital values to many of the ESP32 GPIO pins using CircuitPython. It can also write "analog" signals using a float between 0 and 1 as the duty cycle (which is converted to an 8-bit integer for use by the NINA firmware). Keep in mind that these are 1000Hz PWM signals using the ESP32 LED Control peripheral, not true analog signals using an on-chip DAC. More information can be found here:
+<https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html>
+
+As of NINA firmware version 1.5.0, the ESP32SPI library can be used to read digital signals from many of the ESP32 GPIO pins using CircuitPython. It can also read analog signals using ESP32 on-chip ADC1. The ESP32 can theoretically be set to use between 8 and 12 bits of resolution for analog reads. For our purposes, it is a 12-bit read within the NINA firmware, but the CircuitPython library converts it to a 16-bit integer consistent with CircuitPython `analogio` `AnalogIn`. There's an optional keyword argument in the `set_analog_read(self, pin, atten=ADC_ATTEN_DB_11)` function that changes the attenuation of the analog read, and therefore also changes the effective voltage range of the read. With the default 11dB attenuation, Espressif recommends keeping input voltages between 150mV to 2450mV for best results. More information can be found here:
+<https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/adc.html>
+
+## GPIO Pins available to ESP32SPI
+
+```
+    # ESP32_GPIO_PINS:
+    # https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/blob/master/adafruit_esp32spi/digitalio.py
+    # 0, 1, 2, 4, 5, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33, 34, 35, 36, 39
+    #
+    # Pins Used for ESP32SPI
+    #             5,         14,             18,             23,                 33
+
+    # Avialable ESP32SPI Outputs (digital or 'analog' PWM) with NINA FW >= 1.3.1
+    #
+    # Adafruit ESP32 Breakout
+    # *,    2, 4,    12,  R,     15, 16, 17,     19, 21, 22,     25, 26, 27, 32
+    # Adafruit ESP32 Feather
+    #          4,    12,  R,     15, 16, 17,     19, 21, 22,     25, 26, 27, 32
+    # TinyPICO
+    #          4,                15,             19, 21, 22,     25, 26, 27, 32
+    # Adafruit ESP32 Airlift Breakout†
+    #                                                             G,  R,  B
+    # Adafruit ESP32 Airlift Feather†
+    #                                                             G,  R,  B
+    # Adafruit ESP32 Airlift Bitsy Add-On†
+    #                                                             G,  R,  B
+
+    # Avialable ESP32SPI Digital Inputs with NINA FW >= 1.5.0
+    #
+    # Adafruit ESP32 Breakout
+    # *,    2, 4,    12,  R,     15, 16, 17,     19, 21, 22,     25, 26, 27, 32,     34, 35, 36, 39
+    # Adafruit ESP32 Feather
+    #          4,    12,  R,     15, 16, 17,     19, 21, 22,     25, 26, 27, 32,     34,     36, 39
+    # TinyPICO
+    #          4,                15,             19, 21, 22,     25, 26, 27, 32      CH
+
+    # Avialable ESP32SPI Analog Inputs (ADC1) with NINA FW >= 1.5.0
+    #
+    # Adafruit ESP32 Breakout
+    # *,                                                                     32,     34, 35, HE, HE
+    # Adafruit ESP32 Feather
+    # *,                                                                     32,     34, BA, HE, HE
+    # TinyPICO
+    #                                                                        32,         BA
+
+Notes:
+ *  Used for bootloading
+ G  Green LED
+ R  Red LED
+ B  Blue LED
+BA  On-board connection to battery via 50:50 voltage divider
+CH  Battery charging state (digital pin)
+HE  Hall Effect sensor
+```
+
+Note that on the Airlift FeatherWing and the Airlift Bitsy Add-On, the ESP32 SPI Chip Select (CS) pin aligns with M4's D13 Red LED pin:
+```
+    esp32_cs = DigitalInOut(board.D13)  # M4 Red LED
+    esp32_ready = DigitalInOut(board.D11)
+    esp32_reset = DigitalInOut(board.D12)
+```
+So the Red LED on the main Feather processor will almost always appear to be ON or slightly flickering when ESP32SPI is active.
+
+## ESP32 Reset
+
+Because the ESP32 may reset without indication to the CircuitPython code, putting ESP32 GPIO pins into input mode, `esp.set_digital_write(pin, val)` should be preceded by `esp.set_pin_mode(pin, 0x1)`, with appropriate error handling. Other non-default `esp` states (e.g., `esp.set_esp_debug()`) will also get re-initialized to default settings upon ESP32 reset, so CircuitPython code should anticipate this.
+
+## GPIO on Airlift add-on boards
+
+It should also be possible to do ESP32SPI reads and writes on the Airlift add-on boards, but other than the SPI pins and the green, blue, and red LEDs, the only pins available are RX (GPIO3), TX (GPIO1), and GPIO0, so function is extremely limited. Analog input is ruled out since none of those pins are on ADC1.
+
+The Airlift Breakout has level-shifting on RX and GPIO0, so those could be digital inputs only. TX could be used as a digital input or as a digital or analog (PWM) output.
+
+The Airlift FeatherWing and Bitsy Add-On have no level-shifting since they're designed to be stacked onto their associated M4 microcontrollers, so theoretically RX, TX, and GPIO0 could be used as digital inputs, or as digital or analog (PWM) outputs. It's hard to find a use case for doing this when stacked since RX, TX, and GPIO0 will be connected to M4 GPIO pins.
+
+The Airlift [Metro / Arduino] Shield has level-shifting on RX and GPIO0, with stacking issues similar to the FeatherWings.
+
+The RX, TX, and GPIO0 pins are used for updating the NINA firmware, and have specific behaviors immediately following reboot that need to be considered if reusing them as GPIO. On the Airlift FeatherWing and Bitsy Add-On, there are pads that need to be soldered to connect the pins. NINA does output messages to TX when connected, depending on the esp debug level set.
+
+Ultimately it makes the most sense by far to use a non-stacked full-pinout ESP32 as co-processor for ESP32SPI pin read and write features.

examples/server/esp32spi_wsgiserver.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
 import os
 import board
 import busio
@@ -37,11 +41,18 @@ esp32_reset = DigitalInOut(board.ESP_RESET)
 # esp32_reset = DigitalInOut(board.D5)
 
 spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
-esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset) # pylint: disable=line-too-long
+esp = adafruit_esp32spi.ESP_SPIcontrol(
+    spi, esp32_cs, esp32_ready, esp32_reset
+)  # pylint: disable=line-too-long
 
-"""Use below for Most Boards"""
-status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2) # Uncomment for Most Boards
-"""Uncomment below for ItsyBitsy M4"""
+print("MAC addr:", [hex(i) for i in esp.MAC_address])
+print("MAC addr actual:", [hex(i) for i in esp.MAC_address_actual])
+
+# Use below for Most Boards
+status_light = neopixel.NeoPixel(
+    board.NEOPIXEL, 1, brightness=0.2
+)  # Uncomment for Most Boards
+# Uncomment below for ItsyBitsy M4
 # import adafruit_dotstar as dotstar
 # status_light = dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1, brightness=1)
 
@@ -59,6 +70,7 @@ wifi.connect()
 # wifi = wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
 # wifi.create_ap()
 
+
 class SimpleWSGIApplication:
     """
     An example of a simple WSGI Application that supports
@@ -91,15 +103,21 @@ class SimpleWSGIApplication:
         headers = []
         resp_data = []
 
-        key = self._get_listener_key(environ["REQUEST_METHOD"].lower(), environ["PATH_INFO"])
+        key = self._get_listener_key(
+            environ["REQUEST_METHOD"].lower(), environ["PATH_INFO"]
+        )
         if key in self._listeners:
             status, headers, resp_data = self._listeners[key](environ)
         if environ["REQUEST_METHOD"].lower() == "get" and self._static:
             path = environ["PATH_INFO"]
             if path in self._static_files:
-                status, headers, resp_data = self.serve_file(path, directory=self._static)
+                status, headers, resp_data = self.serve_file(
+                    path, directory=self._static
+                )
             elif path == "/" and self.INDEX in self._static_files:
-                status, headers, resp_data = self.serve_file(self.INDEX, directory=self._static)
+                status, headers, resp_data = self.serve_file(
+                    self.INDEX, directory=self._static
+                )
 
         self._start_response(status, headers)
         return resp_data
@@ -125,8 +143,9 @@ class SimpleWSGIApplication:
         headers = [("Content-Type", self._get_content_type(file_path))]
 
         full_path = file_path if not directory else directory + file_path
+
         def resp_iter():
-            with open(full_path, 'rb') as file:
+            with open(full_path, "rb") as file:
                 while True:
                     chunk = file.read(self.CHUNK_SIZE)
                     if chunk:
@@ -145,7 +164,7 @@ class SimpleWSGIApplication:
         return "{0}|{1}".format(method.lower(), path)
 
     def _get_content_type(self, file):  # pylint: disable=no-self-use
-        ext = file.split('.')[-1]
+        ext = file.split(".")[-1]
         if ext in ("html", "htm"):
             return "text/html"
         if ext == "js":
@@ -158,17 +177,20 @@ class SimpleWSGIApplication:
             return "image/png"
         return "text/plain"
 
+
 # Our HTTP Request handlers
 def led_on(environ):  # pylint: disable=unused-argument
     print("led on!")
     status_light.fill((0, 0, 100))
     return web_app.serve_file("static/index.html")
 
+
 def led_off(environ):  # pylint: disable=unused-argument
     print("led off!")
     status_light.fill(0)
     return web_app.serve_file("static/index.html")
 
+
 def led_color(environ):  # pylint: disable=unused-argument
     json = json_module.loads(environ["wsgi.input"].getvalue())
     print(json)
@@ -176,6 +198,7 @@ def led_color(environ): # pylint: disable=unused-argument
     status_light.fill(rgb_tuple)
     return ("200 OK", [], [])
 
+
 # Here we create our application, setting the static directory location
 # and registering the above request_handlers for specific HTTP requests
 # we want to listen and respond to.
@@ -183,13 +206,21 @@ static = "/static"
 try:
     static_files = os.listdir(static)
     if "index.html" not in static_files:
-        raise RuntimeError("""
+        raise RuntimeError(
+            """
             This example depends on an index.html, but it isn't present.
-            Please add it to the {0} directory""".format(static))
+            Please add it to the {0} directory""".format(
+                static
+            )
+        )
 except (OSError) as e:
-    raise RuntimeError("""
+    raise RuntimeError(
+        """
         This example depends on a static asset directory.
-        Please create one named {0} in the root of the device filesystem.""".format(static))
+        Please create one named {0} in the root of the device filesystem.""".format(
+            static
+        )
+    )
 
 web_app = SimpleWSGIApplication(static_dir=static)
 web_app.on("GET", "/led_on", led_on)

examples/server/static/index.html

@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+
+SPDX-License-Identifier: MIT
+-->
+
 <!DOCTYPE html>
 <html>
     <head>

examples/server/static/led_color_picker_example.js

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
 let canvas = document.getElementById('colorPicker');
 let ctx = canvas.getContext("2d");
 ctx.width = 300;
@@ -123,4 +127,3 @@ function getCursorPosition(canvas, event) {
 
 drawColorPicker();
 canvas.addEventListener('mousedown', onColorPick);
-

pyproject.toml

@@ -0,0 +1,6 @@
+# SPDX-FileCopyrightText: 2020 Diego Elio Pettenò
+#
+# SPDX-License-Identifier: Unlicense
+
+[tool.black]
+target-version = ['py35']

requirements.txt

@@ -1,2 +1,6 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+
 Adafruit-Blinka
 adafruit-circuitpython-busdevice

setup.py

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2019 ladyada for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
 """A setuptools based setup module.
 
 See:
@@ -6,6 +10,7 @@ https://github.com/pypa/sampleproject
 """
 
 from setuptools import setup, find_packages
+
 # To use a consistent encoding
 from codecs import open
 from os import path
@@ -13,52 +18,40 @@ from os import path
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
-with open(path.join(here, 'README.rst'), encoding='utf-8') as f:
+with open(path.join(here, "README.rst"), encoding="utf-8") as f:
     long_description = f.read()
 
 setup(
-    name='adafruit-circuitpython-esp32spi',
-
+    name="adafruit-circuitpython-esp32spi",
     use_scm_version=True,
-    setup_requires=['setuptools_scm'],
-
-    description='CircuitPython driver library for using ESP32 as WiFi  co-processor using SPI',
+    setup_requires=["setuptools_scm"],
+    description="CircuitPython driver library for using ESP32 as WiFi  co-processor using SPI",
     long_description=long_description,
-    long_description_content_type='text/x-rst',
-
+    long_description_content_type="text/x-rst",
     # The project's main homepage.
-    url='https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI',
-
+    url="https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI",
     # Author details
-    author='Adafruit Industries',
-    author_email='circuitpython@adafruit.com',
-
-    install_requires=[
-        'Adafruit-Blinka',
-        'adafruit-circuitpython-busdevice'
-    ],
-
+    author="Adafruit Industries",
+    author_email="circuitpython@adafruit.com",
+    install_requires=["Adafruit-Blinka", "adafruit-circuitpython-busdevice"],
     # Choose your license
-    license='MIT',
-
+    license="MIT",
     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
     classifiers=[
-        'Development Status :: 3 - Alpha',
-        'Intended Audience :: Developers',
-        'Topic :: Software Development :: Libraries',
-        'Topic :: System :: Hardware',
-        'License :: OSI Approved :: MIT License',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
+        "Development Status :: 3 - Alpha",
+        "Intended Audience :: Developers",
+        "Topic :: Software Development :: Libraries",
+        "Topic :: System :: Hardware",
+        "License :: OSI Approved :: MIT License",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
     ],
-
     # What does your project relate to?
-    keywords='adafruit blinka circuitpython micropython esp32spi wifi esp32',
-
+    keywords="adafruit blinka circuitpython micropython esp32spi wifi esp32",
     # You can just specify the packages manually here if your project is
     # simple. Or you can use find_packages().
     # TODO: IF LIBRARY FILES ARE A PACKAGE FOLDER,
     #       CHANGE `py_modules=['...']` TO `packages=['...']`
-    packages=['adafruit_esp32spi'],
+    packages=["adafruit_esp32spi"],
 )