def mlx_init():
ret = wpi.wiringPiSetup() # wPi
if ret:
log(logging.ERROR, "设备初始化失败")
raise WiringPiSetupError("主设备初始化失败!")
bus_fd = wpi.wiringPiI2CSetup(settings.SMBus) # I2C初始化
return bus_fd
def get_ta_to(bus_fd):
# 数据采集函数
ta = wpi.wiringPiI2CReadReg16(bus_fd, settings.TA) # 读取环境温度
ta = int(ta) * 0.02 - 273.15
log(logging.DEBUG, "环境温度==>%s", str(ta))
to_1 = wpi.wiringPiI2CReadReg16(bus_fd, settings.TOBJ1) # 读取物体温度to1
to_2 = wpi.wiringPiI2CReadReg16(bus_fd, settings.TOBJ2) # 这里到底是什么?好像读出来是0
log(logging.DEBUG, "To1+To2==> %d %d", int(to_1), int(to_2))
return ta, to_1, to_2
def handle_custom_cmd(self):
while True:
try:
data = self.request.recv(1024).strip()
if not data and data == b'max_906':
continue
menu, kind, action = data.decode('utf-8').strip().split()
if menu and kind and action:
func = menu_mapping[menu][kind][action]
func()
log(DEBUG, "[INFO]%s" % data.decode("utf-8"))
except Exception as e:
log(ERROR, "[ERROR]%s" % str(e))
break
def _handle_data(bus_fd):
"""
数据处理, 并负责吧数据放入队列中
:param bus_fd: 从设备句柄
:return:
"""
ret = get_ta_to(bus_fd)
if ret[2] == 0:
to = ret[1]*0.02 - 273.15
to = ret[1] * 0.02 - 273.15
msg = "TA: {:.2f} TO: {:.2f} ".format(ret[0], to)
log(DEBUG, msg) # 本地保存数据
try:
q.put(msg, block=False) # 这样做的目的是为了客户端在连接时看到的是实时数据
except Full:
log(DEBUG, "队列已满")
def handle(self):
t = Thread(target=self.handle_custom_cmd)
t.setDaemon(True) # 开启守护线程,主线程结束子线程也同时结束
t.start()
while True:
try:
time.sleep(1)
try:
send_data = q.get(timeout=q_timeout)
except Empty:
log(ERROR, "队列get超时,连接断开")
raise
self.request.send(bytes(send_data, encoding="utf-8"))
except Exception as e:
gpi_write(warn_pin, 0) # 异常退出将警报和恒温关闭
gpi_write(warm_pin, 0)
log(ERROR, str(e))
break
def run():
try:
bus_fd = mlx_init() # init mlx_90614
gpi_init(warn_pin) # 初始化温度控制系统
gpi_init(warm_pin) # 初始化恒温控制系统
except WiringPiSetupError as e:
log(ERROR, str(e))
sys.exit(1)
server_t = Process(target=init) # 开启socket服务端子进程
server_t.daemon = True # 设置为守护进程
server_t.start()
# 主进程处理数据
while True:
try:
time.sleep(1) # 采样时间间隔
_handle_data(bus_fd)
except Exception as e:
log(ERROR, str(e))
sys.exit(1)