led_server.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
import json
import serial
import math

def makeSendData(val):
    print val
    if val >= 100:
        h = int(math.floor(val/100))
        j = int(math.floor((val - (h*100))/10))
        i = int((val - (h*100) - (j*10)))
        return [h, j, i]
    elif val >= 10:
        j = int(math.floor(val/10))
        i = int(val - (j*10))
        return [0, j, i]
    else:
        return [0, 0, int(val)]

from flask import Flask, request, abort

#port = '/dev/ttyUSB0'
port = '/dev/cu.usbserial-DM00BHZW'
baud = 9600

app = Flask(__name__)
try:
    ser = serial.Serial(port, baud)
    print "serial open: {}, {}".format(port, baud)
except:
    ser = None
    print "serial open: failed {}, {}".format(port, baud)


@app.route("/api/led", methods=['POST'])
def callback():
    body = request.get_data(as_text=True)
    app.logger.info("Request body: " + body)

    data = json.loads(body)['text']

    rgb = (data[0], data[1], data[2])
    print rgb

    if ser:
        print 'send serial!'
        # ser.write(255000000)
        r = makeSendData(data[0])
        g = makeSendData(data[1])
        b = makeSendData(data[2])

        ser.write(str(r[0]))
        ser.write(str(r[1]))
        ser.write(str(r[2]))
        ser.write(str(g[0]))
        ser.write(str(g[1]))
        ser.write(str(g[2]))
        ser.write(str(b[0]))
        ser.write(str(b[1]))
        ser.write(str(b[2]))

    return 'OK'


if __name__ == "__main__":
    app.run(debug=True, port=5255)
    if ser:
        ser.close()