adding circuitpython and pure data code
Adding CircuitPython code for ESP32-S2 and Pure Data script for the Wireless ESP32-S2 Controller for Pure Data Learn Guide
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150
Wireless_ESP32-S2_Controller_For_Pure_Data/code.py
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150
Wireless_ESP32-S2_Controller_For_Pure_Data/code.py
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# SPDX-FileCopyrightText: 2022 Liz Clark for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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import ipaddress
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import wifi
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import socketpool
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import board
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import simpleio
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import adafruit_tsc2007
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import adafruit_adxl34x
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# Get wifi details and host IP from a secrets.py file
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try:
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from secrets import secrets
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except ImportError:
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print("WiFi secrets are kept in secrets.py, please add them there!")
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raise
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# I2C setup for STEMMA port
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i2c = board.STEMMA_I2C()
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# touchscreen setup for TSC2007
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irq_dio = None
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tsc = adafruit_tsc2007.TSC2007(i2c, irq=irq_dio)
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# accelerometer setup
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accelerometer = adafruit_adxl34x.ADXL343(i2c)
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accelerometer.enable_tap_detection()
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# MIDI notes - 2 octaves of Cmaj7 triad
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notes = [48, 52, 55, 59, 60, 64, 67, 71]
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# reads touch input
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point = tsc.touch
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# accelerometer x coordinate
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acc_x = 0
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# accelerometer y coordinate
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acc_y = 0
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# last accelerometer x coordinate
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last_accX = 0
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# last accelerometer y coordinate
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last_accY = 0
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# mapped value for touchscreen x coordinate
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x_map = 0
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# mapped value for touchscreen y coordinate
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y_map = 0
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# last mapped value for touchscreen x coordinate
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last_x = 0
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# last mapped value for touchscreen y coordinate
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last_y = 0
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# state for whether synth is running
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run = 0
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# tap detection state
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last_tap = False
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# new value detection state
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new_val = False
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# URLs to fetch from
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HOST = secrets["host"]
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PORT = 12345
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TIMEOUT = 5
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INTERVAL = 5
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MAXBUF = 256
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# connect to WIFI
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print("Connecting to %s"%secrets["ssid"])
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wifi.radio.connect(secrets["ssid"], secrets["password"])
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print("Connected to %s!"%secrets["ssid"])
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pool = socketpool.SocketPool(wifi.radio)
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ipv4 = ipaddress.ip_address(pool.getaddrinfo(HOST, PORT)[0][4][0])
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buf = bytearray(MAXBUF)
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print("Create TCP Client Socket")
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s = pool.socket(pool.AF_INET, pool.SOCK_STREAM)
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print("Connecting")
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s.connect((HOST, PORT))
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while True:
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# tap detection
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# if tap is detected and the synth is not running...
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if accelerometer.events["tap"] and not last_tap and not run:
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# run is updated to 1
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run = 1
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# last_tap is reset
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last_tap = True
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print("running")
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# message is sent to Pd to start the synth
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["run", str(run), ";"])))
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# if tap is detected and the synth is running...
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if accelerometer.events["tap"] and not last_tap and run:
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# run is updated to 0
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run = 0
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# last_tap is reset
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last_tap = True
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print("not running")
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# message is sent to Pd to stop the synth
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["run", str(run), ";"])))
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# tap detection debounce
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if not accelerometer.events["tap"] and last_tap:
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last_tap = False
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# if the touchscreen is touched...
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if tsc.touched:
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# point holds touch data
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point = tsc.touch
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# x coordinate is remapped to 0 - 8
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x_map = simpleio.map_range(point["x"], 0, 4095, 0, 8)
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# y coordinate is remapped to 0 - 8
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y_map = simpleio.map_range(point["y"], 0, 4095, 0, 8)
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# accelerometer x value is remapped for synth filter
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acc_x = simpleio.map_range(accelerometer.acceleration[0], -10, 10, 450, 1200)
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# accelerometer y value is remapped for synth filter
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acc_y = simpleio.map_range(accelerometer.acceleration[1], -10, 10, 250, 750)
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# if any of the values are different from the last value...
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if x_map != last_x:
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# last value is updated
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last_x = x_map
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# new value is detected
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new_val = True
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if y_map != last_y:
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last_y = y_map
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new_val = True
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if int(acc_x) != last_accX:
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last_accX = int(acc_x)
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new_val = True
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if int(acc_y) != last_accY:
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last_accY = int(acc_y)
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new_val = True
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# if a new value is detected...
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if new_val:
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# note index is updated to y coordinate on touch screen
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note = notes[int(y_map)]
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# message with updated values is sent via socket to Pd
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# all Pd messages need to end with a ";"
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size = s.send(str.encode(' '.join(["x", str(x_map), ";",
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"y", str(y_map), ";",
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"aX", str(acc_x), ";",
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"aY", str(acc_y), ";",
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"n", str(note), ";"])))
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# new_val is reset
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new_val = False
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159
Wireless_ESP32-S2_Controller_For_Pure_Data/pureDataWithEsp32.pd
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Wireless_ESP32-S2_Controller_For_Pure_Data/pureDataWithEsp32.pd
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#N canvas 3 5 1920 976 12;
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#X msg 95 16 listen 12345;
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#X obj 51 77 print;
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#X obj 95 45 netreceive -f 12345;
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#X obj 161 180 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 4 137 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 75 106 int;
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#X obj 125 122 int;
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#X obj 125 158 s y;
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#X obj 75 143 s x;
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#X msg 476 268 \; seq const 0;
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#X obj 398 110 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 363 110 s n;
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#X obj 43 394 mtof;
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#X obj 158 810 output~;
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#X obj 44 420 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 481 378 tabwrite seq;
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#X obj 479 354 r n;
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#X obj 556 347 r x;
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#N canvas 0 50 450 250 (subpatch) 0;
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#X array seq 8 float 3;
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#A 0 55 55 52 55 64 59 60 67;
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#X coords 0 46 8 72 272 185 1;
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#X restore 474 38 graph;
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#X obj 26 219 tgl 15 0 empty empty empty 17 7 0 10 #fcfcfc #000000
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#000000 0 1;
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#X obj 30 257 metro 250;
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#X obj 39 365 tabread seq;
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#X obj 31 299 f;
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#X obj 80 301 + 1;
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#X obj 35 325 % 8;
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#X msg 476 309 \; seq resize 8;
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#X obj 88 466 phasor~;
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#X obj 167 760 vcf~ 1;
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#X obj 165 443 / 100;
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#X obj 224 443 / 100;
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#X obj 128 507 -~;
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#X obj 184 507 -~;
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#X obj 108 548 wrap~;
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#X obj 109 582 -~ 0.5;
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#X obj 142 635 / 100;
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#X obj 112 663 *~;
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#X obj 170 712 +~;
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#X obj 264 544 wrap~;
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#X obj 265 578 -~ 0.5;
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#X obj 298 631 / 100;
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#X obj 268 659 *~;
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#X obj 95 75 route x y aX aY run n, f 47;
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#X obj 316 109 s run;
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#X obj 260 116 int;
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#X obj 313 160 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 179 108 int;
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#X obj 179 148 s aX;
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#X obj 232 152 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 262 171 s aY;
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#X obj 162 405 r aX;
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#X obj 221 406 r aY;
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#X obj 350 516 r aX;
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#X obj 362 568 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 190 595 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 178 543 r aY;
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#X obj 303 715 + 550;
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#X obj 311 758 nbx 5 14 -1e+37 1e+37 0 0 empty empty empty 0 -8 0 10
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#fcfcfc #000000 #000000 0 256;
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#X obj 354 673 * 100;
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#X obj 348 542 / 2;
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#X obj 176 569 / 2;
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#X obj 146 348 s index;
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#X obj 356 633 r index;
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#X obj 25 159 r run;
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#X obj 132 271 s off;
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#X obj -15 365 r off;
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#X obj 169 470 r off;
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#X obj 231 477 r off;
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#X obj 163 666 r off;
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#X obj 303 661 r off;
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#X obj 208 717 r off;
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#X obj 117 243 0;
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#X obj 84 213 bng 15 250 50 0 empty empty empty 17 7 0 10 #fcfcfc #000000
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#000000;
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#X msg 479 231 \; seq bounds 0 46 8 72;
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#X connect 0 0 2 0;
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#X connect 2 0 1 0;
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#X connect 2 0 41 0;
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#X connect 5 0 4 0;
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#X connect 5 0 8 0;
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#X connect 6 0 3 0;
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#X connect 6 0 7 0;
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#X connect 12 0 14 0;
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#X connect 14 0 26 0;
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#X connect 16 0 15 0;
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#X connect 17 0 15 1;
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#X connect 19 0 20 0;
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#X connect 20 0 22 0;
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#X connect 21 0 12 0;
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#X connect 22 0 23 0;
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#X connect 22 0 24 0;
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#X connect 23 0 22 1;
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#X connect 24 0 21 0;
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#X connect 24 0 60 0;
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#X connect 26 0 30 0;
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#X connect 26 0 31 0;
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#X connect 27 1 13 0;
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#X connect 27 1 13 1;
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#X connect 28 0 30 1;
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#X connect 29 0 31 1;
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#X connect 30 0 32 0;
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#X connect 31 0 37 0;
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#X connect 32 0 33 0;
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#X connect 33 0 35 0;
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#X connect 34 0 35 1;
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#X connect 35 0 36 0;
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#X connect 36 0 27 0;
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#X connect 37 0 38 0;
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#X connect 38 0 40 0;
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#X connect 39 0 40 1;
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#X connect 40 0 36 1;
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#X connect 41 0 5 0;
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#X connect 41 1 6 0;
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#X connect 41 2 45 0;
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#X connect 41 3 43 0;
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#X connect 41 4 42 0;
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#X connect 41 5 11 0;
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#X connect 41 5 10 0;
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#X connect 43 0 44 0;
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#X connect 43 0 48 0;
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#X connect 45 0 46 0;
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#X connect 45 0 47 0;
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#X connect 49 0 28 0;
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#X connect 50 0 29 0;
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#X connect 51 0 58 0;
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#X connect 54 0 59 0;
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#X connect 55 0 27 1;
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#X connect 55 0 56 0;
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#X connect 57 0 55 0;
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#X connect 58 0 52 0;
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#X connect 58 0 39 0;
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#X connect 59 0 53 0;
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#X connect 59 0 34 0;
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#X connect 61 0 57 0;
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#X connect 62 0 19 0;
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#X connect 62 0 71 0;
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#X connect 64 0 12 0;
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#X connect 65 0 30 1;
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#X connect 66 0 31 1;
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#X connect 67 0 35 1;
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#X connect 68 0 40 1;
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#X connect 69 0 27 1;
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#X connect 70 0 63 0;
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#X connect 71 0 70 0;
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#X coords 0 0 100 1 0 0 0;
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