import serial
import time
import math
import random

uart = serial.Serial('/dev/ttyUSB0', 460800)
uart.flush()

while True:
        if ord(uart.read()) == 0x3c:
        # if ord(uart.read()) == 254:
            x = ord(uart.read()) << 16 | ord(uart.read()) << 8 | ord(uart.read())
            if (x>8388607):
                x -=16777215
            print x