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November 16, 2022 14:23
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CircuitPython HTTP Remote (used for Android TV control)
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| # Tested on a Raspbery Pi Pico W running CircuitPyton 8 | |
| import socketpool | |
| import wifi | |
| import board | |
| import array | |
| import time | |
| import usb_hid | |
| import digitalio | |
| # download the .mpy from https://github.com/deckerego/ampule | |
| import ampule | |
| # from https://circuitpython.org/libraries | |
| from adafruit_hid.keyboard import Keyboard | |
| from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS | |
| from adafruit_hid.consumer_control import ConsumerControl | |
| keyboard = Keyboard(usb_hid.devices) | |
| keyboard_layout = KeyboardLayoutUS(keyboard) | |
| cc = ConsumerControl(usb_hid.devices) | |
| led = digitalio.DigitalInOut(board.LED) | |
| led.direction = digitalio.Direction.OUTPUT | |
| led.value = False | |
| # this might fail, feel free to wrap in error handling / retry logic | |
| wifi.radio.connect("your WiFI SSID", "your password") | |
| # read file from CIRCUITPY drive as a string | |
| def static_file(filename): | |
| with open(filename) as local_file: | |
| content = local_file.read() | |
| return content | |
| # send a normal key code via HTTP, "press" and release it via USB. | |
| @ampule.route("/key_code/<code>") | |
| def key_code(request, code): | |
| print("code", code) | |
| keyboard.press(int(code)) | |
| keyboard.release_all() | |
| return (200, {}, str(code)) | |
| # send a normal consumer code (usually for media control) via HTTP, "press" and release it via USB. | |
| @ampule.route("/consumer_code/<code>") | |
| def consumer_code(request, code): | |
| print("cc code", code) | |
| cc.send(int(code)) | |
| return (200, {}, str(code)) | |
| # load the main UI | |
| @ampule.route("/") | |
| def index(request): | |
| return (200, {}, static_file("remote.html")) | |
| pool = socketpool.SocketPool(wifi.radio) | |
| socket = pool.socket() | |
| socket.bind(['0.0.0.0', 80]) | |
| socket.listen(1) | |
| # turn on the LED to indicate everything is up and running. | |
| led.value = True | |
| print("Connected") | |
| while True: | |
| ampule.listen(socket) |
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <style> | |
| .button { | |
| height: 200px; | |
| font-size: 50px; | |
| width: 50%; | |
| } | |
| </style> | |
| <script> | |
| function sendKeyCode(code) { | |
| console.log(`send code; ${code}`) | |
| fetch(`key_code/${code}`) | |
| .then((response) => console.log(response)) | |
| } | |
| function sendConsumerCode(code) { | |
| console.log(`send consumer code; ${code}`) | |
| fetch(`consumer_code/${code}`) | |
| .then((response) => console.log(response)) | |
| } | |
| </script> | |
| <!-- Keycode values pulled from: https://docs.circuitpython.org/projects/hid/en/latest/_modules/adafruit_hid/keycode.html --> | |
| <div style="width: 80%;"> | |
| <div style="background-color: #4400ff; width: 100%"> | |
| <button class="button" style="width: 100%;" onclick="sendKeyCode(0x52)">UP</button> | |
| </div> | |
| <div> | |
| <button class="button" style="width: 32%;" onclick="sendKeyCode(0x50)">LEFT</button> | |
| <button class="button" style="width: 32%;" onclick="sendKeyCode(0x28)">ENTER</button> | |
| <button class="button" style="width: 32%;" onclick="sendKeyCode(0x4F)">RIGHT</button> | |
| </div> | |
| <div> | |
| <button class="button" style="width: 100%;" onclick="sendKeyCode(0x51)">DOWN</button> | |
| </div> | |
| <br><br> | |
| <div> | |
| <button class="button" onclick="sendConsumerCode(0xEA)">VOL -</button> | |
| <button class="button" onclick="sendConsumerCode(0xE9)">VOL +</button> | |
| </div> | |
| <div> | |
| <button class="button" onclick="sendKeyCode(0x2A)">BACK</button> | |
| </div> | |
| <div> | |
| <!-- TODO This is not the right key code for Home, at least not on Android TV --> | |
| <button class="button" onclick="sendKeyCode(0x5F)">HOME</button> | |
| </div> | |
| </div> | |
| </body> | |
| </html> |
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