Merge pull request #451 from brentru/pi-radio

Pi Radio LearnGuide
2019-01-02 08:57:51 -08:00 · 2019-01-02 08:57:51 -08:00 · 7af22472fc
commit 7af22472fc
parent b40261bc4e 066f8b4cb3
9 changed files with 488 additions and 0 deletions
--- a/pi_radio/font5x8.bin
+++ b/pi_radio/font5x8.bin
--- a/pi_radio/radio_lorawan.py
+++ b/pi_radio/radio_lorawan.py
@ -0,0 +1,117 @@
+"""
+Example for using the RFM9x Radio with Raspberry Pi and LoRaWAN
+
+Learn Guide: https://learn.adafruit.com/lora-and-lorawan-for-raspberry-pi
+Author: Brent Rubell for Adafruit Industries
+"""
+import threading
+import time
+import subprocess
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+# Import thte SSD1306 module.
+import adafruit_ssd1306
+# Import Adafruit TinyLoRa
+from adafruit_tinylora.adafruit_tinylora import TTN, TinyLoRa
+
+# Button A
+btnA = DigitalInOut(board.D5)
+btnA.direction = Direction.INPUT
+btnA.pull = Pull.UP
+
+# Button B
+btnB = DigitalInOut(board.D6)
+btnB.direction = Direction.INPUT
+btnB.pull = Pull.UP
+
+# Button C
+btnC = DigitalInOut(board.D12)
+btnC.direction = Direction.INPUT
+btnC.pull = Pull.UP
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+# TinyLoRa Configuration
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+cs = DigitalInOut(board.D18)
+irq = DigitalInOut(board.D25)
+# TTN Device Address, 4 Bytes, MSB
+devaddr = bytearray([0x00, 0x00, 0x00, 0x00])
+# TTN Network Key, 16 Bytes, MSB
+nwkey = bytearray([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+# TTN Application Key, 16 Bytess, MSB
+app = bytearray([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+# Initialize ThingsNetwork configuration
+ttn_config = TTN(devaddr, nwkey, app, country='US')
+# Initialize lora object
+lora = TinyLoRa(spi, cs, irq, ttn_config)
+# 2b array to store sensor data
+data_pkt = bytearray(2)
+# time to delay periodic packet sends (in seconds)
+data_pkt_delay = 5.0
+
+
+def send_pi_data_periodic():
+    threading.Timer(data_pkt_delay, send_pi_data_periodic).start()
+    print("Sending periodic data...")
+    send_pi_data(CPU)
+    print('CPU:', CPU)
+
+def send_pi_data(data):
+    # Encode float as int
+    data = int(data * 100)
+    # Encode payload as bytes
+    data_pkt[0] = (data >> 8) & 0xff
+    data_pkt[1] = data & 0xff
+    # Send data packet
+    lora.send_data(data_pkt, len(data_pkt), lora.frame_counter)
+    lora.frame_counter += 1
+    display.fill(0)
+    display.text('Sent Data to TTN!', 15, 15, 1)
+    print('Data sent!')
+    display.show()
+    time.sleep(0.5)
+
+while True:
+    packet = None
+    # draw a box to clear the image
+    display.fill(0)
+    display.text('RasPi LoRaWAN', 35, 0, 1)
+
+    # read the raspberry pi cpu load
+    cmd = "top -bn1 | grep load | awk '{printf \"%.1f\", $(NF-2)}'"
+    CPU = subprocess.check_output(cmd, shell = True )
+    CPU = float(CPU)
+
+    if not btnA.value:
+        # Send Packet
+        send_pi_data(CPU)
+    if not btnB.value:
+        # Display CPU Load
+        display.fill(0)
+        display.text('CPU Load %', 45, 0, 1)
+        display.text(str(CPU), 60, 15, 1)
+        display.show()
+        time.sleep(0.1)
+    if not btnC.value:
+        display.fill(0)
+        display.text('* Periodic Mode *', 15, 0, 1)
+        display.show()
+        time.sleep(0.5)
+        send_pi_data_periodic()
+
+
+    display.show()
+    time.sleep(.1)
--- a/pi_radio/radio_rfm69.py
+++ b/pi_radio/radio_rfm69.py
@ -0,0 +1,94 @@
+"""
+Demo of using the RFM69HCW Radio with Raspberry Pi.
+
+Author: Brent Rubell for Adafruit Industries
+"""
+import time
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+# Import the RFM69 radio module.
+import adafruit_rfm69
+# Import the SSD1306 module.
+import adafruit_ssd1306
+
+# Button A
+btnA = DigitalInOut(board.D5)
+btnA.direction = Direction.INPUT
+btnA.pull = Pull.UP
+
+# Button B
+btnB = DigitalInOut(board.D6)
+btnB.direction = Direction.INPUT
+btnB.pull = Pull.UP
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+# Configure Packet Radio
+CS = DigitalInOut(board.D18)
+RESET = DigitalInOut(board.D25)
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+rfm69 = adafruit_rfm69.RFM69(spi, CS, RESET, 915.0)
+
+# Optionally set an encryption key (16 byte AES key). MUST match both
+# on the transmitter and receiver (or be set to None to disable/the default).
+rfm69.encryption_key = b'\x01\x02\x03\x04\x05\x06\x07\x08\x01\x02\x03\x04\x05\x06\x07\x08'
+# Data to send
+packet_data = bytes('Hello Feather!\r\n',"utf-8")
+prev_packet = None
+
+while True:
+    packet = None
+    # draw a box to clear the image
+    display.fill(0)
+    display.text('RasPi Radio', 35, 0, 1)
+
+    # check for packet rx
+    packet = rfm69.receive()
+    print(packet)
+    if packet is None:
+        display.show()
+        display.text('- Waiting for PKT -', 0, 20, 1)
+    else:
+        # Display the packet text and rssi
+        display.fill(0)
+        prev_packet = packet
+        packet_text = str(prev_packet, 'ascii')
+        display.text('RX: ', 0, 0, 1)
+        display.text(packet_text, 25, 0, 1)
+        display.text('RSSI: ', 0, 20, 1)
+        display.text(str(rfm69.rssi), 35, 20, 1)
+        time.sleep(2)
+
+    if not btnA.value:
+        # Send Packet
+        rfm69.send(packet_data)
+        display.fill(0)
+        display.text('Sent Packet', 0, 25, 1)
+        display.show()
+        time.sleep(0.2)
+    elif not btnB.value:
+        # Display the previous packet text and rssi
+        display.fill(0)
+        if prev_packet is not None:
+            packet_text = str(prev_packet, 'ascii')
+            display.text('RX: ', 0, 0, 1)
+            display.text(packet_text, 25, 0, 1)
+            display.text('RSSI: ', 0, 20, 1)
+            display.text(str(rfm69.rssi), 35, 20, 1)
+        else:
+            display.text('No Pkt RCVd', 0, 16, 1)
+        display.show()
+        time.sleep(2)
+
+    display.show()
+    time.sleep(0.1)
--- a/pi_radio/radio_rfm9x.py
+++ b/pi_radio/radio_rfm9x.py
@ -0,0 +1,110 @@
+"""
+Example for using the RFM9x Radio with Raspberry Pi.
+
+Learn Guide: https://learn.adafruit.com/lora-and-lorawan-for-raspberry-pi
+Author: Brent Rubell for Adafruit Industries
+"""
+import time
+import threading
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+# Import thte SSD1306 module.
+import adafruit_ssd1306
+# Import the RFM9x
+import adafruit_rfm9x
+
+# Button A
+btnA = DigitalInOut(board.D5)
+btnA.direction = Direction.INPUT
+btnA.pull = Pull.UP
+
+# Button B
+btnB = DigitalInOut(board.D6)
+btnB.direction = Direction.INPUT
+btnB.pull = Pull.UP
+
+# Button C
+btnC = DigitalInOut(board.D12)
+btnC.direction = Direction.INPUT
+btnC.pull = Pull.UP
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+# Configure LoRa Radio
+CS = DigitalInOut(board.D18)
+RESET = DigitalInOut(board.D25)
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, 915.0)
+rfm9x.tx_power = 23
+data_to_send = bytes("Hello LoRa!\r\n","utf-8")
+prev_packet = None
+# time to delay periodic packet sends (in seconds)
+data_pkt_delay = 30.0
+
+def send_pi_data_periodic():
+    threading.Timer(data_pkt_delay, send_pi_data_periodic).start()
+    print("Sending periodic data...")
+    send_pi_data()
+
+def send_pi_data():
+    rfm9x.send(data_to_send)
+    display.fill(0)
+    display.text('Sent Packet', 35, 15, 1)
+    print('Sent Packet!')
+    display.show()
+    time.sleep(0.5)
+
+while True:
+    packet = None
+    # draw a box to clear the image
+    display.fill(0)
+    display.text('RasPi LoRa', 35, 0, 1)
+
+    # check for packet rx
+    packet = rfm9x.receive()
+    if packet is None:
+        display.show()
+        display.text('- Waiting for PKT -', 0, 20, 1)
+    else:
+        # Display the packet text and rssi
+        display.fill(0)
+        prev_packet = packet
+        packet_text = str(prev_packet, 'ascii')
+        display.text('RX: ', 0, 0, 1)
+        display.text(packet_text, 25, 0, 1)
+        time.sleep(1)
+
+    if not btnA.value:
+        # Send Packet
+        send_pi_data()
+    elif not btnB.value:
+        # Display the previous packet text and rssi
+        display.fill(0)
+        if prev_packet is not None:
+            packet_text = str(prev_packet, 'ascii')
+            display.text('RX: ', 0, 0, 1)
+            display.text(packet_text, 25, 0, 1)
+        else:
+            display.text('No Pkt RCVd', 0, 16, 1)
+        display.show()
+        time.sleep(1)
+    elif not btnC.value:
+        display.fill(0)
+        display.text('* Periodic Mode *', 15, 0, 1)
+        display.show()
+        time.sleep(0.2)
+        send_pi_data_periodic()
+
+
+    display.show()
+    time.sleep(.1)
--- a/pi_radio/rfm69.fzz
+++ b/pi_radio/rfm69.fzz
--- a/pi_radio/rfm69_check.py
+++ b/pi_radio/rfm69_check.py
@ -0,0 +1,78 @@
+"""
+Wiring Check, Pi Radio w/RFM69
+
+Learn Guide: https://learn.adafruit.com/lora-and-lorawan-for-raspberry-pi
+Author: Brent Rubell for Adafruit Industries
+"""
+import time
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+# Import the SSD1306 module.
+import adafruit_ssd1306
+# Import the RFM69 radio module.
+import adafruit_rfm69
+
+# Button A
+btnA = DigitalInOut(board.D26)
+btnA.direction = Direction.INPUT
+btnA.pull = Pull.UP
+
+# Button B
+btnB = DigitalInOut(board.D19)
+btnB.direction = Direction.INPUT
+btnB.pull = Pull.UP
+
+# Button C
+btnC = DigitalInOut(board.D13)
+btnC.direction = Direction.INPUT
+btnC.pull = Pull.UP
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+
+# RFM69 Configuration
+CS = DigitalInOut(board.D18)
+RESET = DigitalInOut(board.D25)
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+
+while True:
+    # Draw a black filled box to clear the image.
+    display.fill(0)
+
+    # Attempt to set up the RFM69 Module
+    try:
+        rfm69 = adafruit_rfm69.RFM69(spi, CS, RESET, 915.0)
+        display.text('RFM69: Detected', 0, 0, 1)
+    except RuntimeError:
+        # Thrown on version mismatch
+        display.text('RFM69: ERROR', 0, 0, 1)
+
+    # Check buttons
+    if not btnA.value:
+        # Button A Pressed
+        display.text('Ada', width-85, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+    if not btnB.value:
+        # Button B Pressed
+        display.text('Fruit', width-75, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+    if not btnC.value:
+        # Button C Pressed
+        display.text('Radio', width-65, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+
+    display.show()
+    time.sleep(0.1)
--- a/pi_radio/rfm9x.fzz
+++ b/pi_radio/rfm9x.fzz
--- a/pi_radio/rfm9x_check.py
+++ b/pi_radio/rfm9x_check.py
@ -0,0 +1,77 @@
+"""
+Wiring Check, Pi Radio w/RFM9x
+
+Learn Guide: https://learn.adafruit.com/lora-and-lorawan-for-raspberry-pi
+Author: Brent Rubell for Adafruit Industries
+"""
+import time
+import busio
+from digitalio import DigitalInOut, Direction, Pull
+import board
+# Import the SSD1306 module.
+import adafruit_ssd1306
+# Import the RFM9x radio module.
+import adafruit_rfm9x
+
+# Button A
+btnA = DigitalInOut(board.D26)
+btnA.direction = Direction.INPUT
+btnA.pull = Pull.UP
+
+# Button B
+btnB = DigitalInOut(board.D19)
+btnB.direction = Direction.INPUT
+btnB.pull = Pull.UP
+
+# Button C
+btnC = DigitalInOut(board.D13)
+btnC.direction = Direction.INPUT
+btnC.pull = Pull.UP
+
+# Create the I2C interface.
+i2c = busio.I2C(board.SCL, board.SDA)
+
+# 128x32 OLED Display
+display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c)
+# Clear the display.
+display.fill(0)
+display.show()
+width = display.width
+height = display.height
+
+# Configure RFM9x LoRa Radio
+CS = DigitalInOut(board.D18)
+RESET = DigitalInOut(board.D25)
+spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+
+while True:
+    # Clear the image
+    display.fill(0)
+
+    # Attempt to set up the RFM9x Module
+    try:
+        rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, 915.0)
+        display.text('RFM9x: Detected', 0, 0, 1)
+    except RuntimeError:
+        # Thrown on version mismatch
+        display.text('RFM9x: ERROR', 0, 0, 1)
+
+    # Check buttons
+    if not btnA.value:
+        # Button A Pressed
+        display.text('Ada', width-85, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+    if not btnB.value:
+        # Button B Pressed
+        display.text('Fruit', width-75, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+    if not btnC.value:
+        # Button C Pressed
+        display.text('Radio', width-65, height-7, 1)
+        display.show()
+        time.sleep(0.1)
+
+    display.show()
+    time.sleep(0.1)
--- a/pi_radio/ttn_decoder_lorawan.js
+++ b/pi_radio/ttn_decoder_lorawan.js
@ -0,0 +1,12 @@
+// TinyLoRa - Raspberry Pi CPU Load Decoder
+function Decoder(bytes, port) {
+  var decoded = {};
+
+  // Decode bytes to int
+  var CPU_Load = (bytes[0] << 8) | bytes[1];
+
+  // Decode int to float
+  decoded.CPU_Load = CPU_Load / 100;
+
+  return decoded;
+}