Pocket Chip bluetooth RC car

bt_car.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-

import bluetooth
import pygame
import sys

#Préparation de l'écran et de pygame
size = width, height = 480, 272
screen = pygame.display.set_mode(size)
pygame.display.set_caption("Fiat 500")
pygame.init()
font = pygame.font.SysFont("Monospace", 15)
screen.blit(back, (0, 0))

#Préparation du bluetooth
uuid = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" #uuid du service SPP
addr = "xx:xx:xx:xx:xx:xx" #mac de la voiture
service_matches = bluetooth.find_service(uuid = uuid, address = addr)
first_match = service_matches[0]

if len(service_matches) == 0:
	label_err = font.render("Voiture non détectée !",1 , (180, 20, 0))
	screen.blit(label_err, (50,50))
	sys.exit(0)

port = first_match["port"]
name = first_match["name"]
host = first_match["host"]
label_conn = font.render("Connexion à la voiture...",1 , (180, 20, 0))
screen.blit(label_conn, (50,50))
sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
sock.connect((host, port))
label_conn = font.render("Connecté !",1 , (180, 20, 0))
screen.blit(label_conn, (50,66))

avar = ""

while True:
	for event in pygame.event.get():
		if event.type == pygame.KEYDOWN and event.key == pygame.K_ESCAPE:
			pygame.display.quit()
			sock.close()
			sys.exit(0)
		elif event.type == pygame.KEYDOWN and event.key == pygame.K_UP:
			avar = "\x01"
		elif event.type == pygame.KEYUP and event.key == pygame.K_UP:
			sock.send("\x00")
			avar = ""
		elif event.type == pygame.KEYDOWN and event.key == pygame.K_DOWN:
			avar = "\x03"
		elif event.type == pygame.KEYUP and event.key == pygame.K_DOWN:
			sock.send("\x02")
			avar = ""
		elif event.type == pygame.KEYDOWN and event.key == pygame.K_0:
			sock.send("\x05")
		elif event.type == pygame.KEYUP and event.key == pygame.K_0:
			sock.send("\x04")
		elif event.type == pygame.KEYDOWN and event.key == pygame.K_EQUALS:
			sock.send("\x07")
		elif event.type == pygame.KEYUP and event.key == pygame.K_EQUALS:
			sock.send("\x06")
	if len(avar) > 0:
		sock.send(avar)
	pygame.display.update()
	pygame.time.delay(200)