LED-Control/server.py

from flask import Flask, request
import os
import subprocess
from colormap import rgb2hex
from tenacity import wait_exponential, retry, stop_after_attempt


app = Flask(__name__)


@retry(wait=wait_exponential(multiplier=2, min=2, max=30), stop=stop_after_attempt(5))
@app.route("/on")
def on():
    result = subprocess.run(
        [f"gatttool -i hci0 -b b2:3b:03:00:14:d6 --char-write-req -a 0x0009 -n cc2333"],
        stdout=subprocess.PIPE,
        shell=True,
    ).stdout.decode("utf-8")
    print(result)
    if "Characteristic value was written successfully" not in result:
        raise Exception
    else:
        return "On"


@retry(wait=wait_exponential(multiplier=2, min=2, max=30), stop=stop_after_attempt(5))
@app.route("/off")
def off():
    result = subprocess.run(
        [f"gatttool -i hci0 -b b2:3b:03:00:14:d6 --char-write-req -a 0x0009 -n cc2433"],
        stdout=subprocess.PIPE,
        shell=True,
    ).stdout.decode("utf-8")
    print(result)
    if "Characteristic value was written successfully" not in result:
        raise Exception
    else:
        return "Off"


@retry(wait=wait_exponential(multiplier=2, min=2, max=30), stop=stop_after_attempt(5))
@app.route("/colour")
def hello():
    # a = request.query_string
    r = int(request.args.get("r"))
    g = int(request.args.get("g"))
    b = int(request.args.get("b"))
    hex = rgb2hex(r, g, b)
    hex = hex.replace("#", "")

    str = "56" + hex + "00f0aa"
    try:
      result = subprocess.run(
          [f"gatttool -i hci0 -b b2:3b:03:00:14:d6 --char-write-req -a 0x0009 -n {str}"],
          stdout=subprocess.PIPE,
          shell=True,
      ).stdout.decode("utf-8")
      print(result)
      if "Characteristic value was written successfully" not in result:
          raise Exception
      else:
          return request.query_string
    except:
      raise Exception