45 lines
958 B
Python
45 lines
958 B
Python
import serial
|
|
import threading
|
|
|
|
def listen(keep_alive_event, pi):
|
|
while True:
|
|
message = pi.readline().decode()
|
|
if '\n' in message:
|
|
if "keep-alive" in message:
|
|
keep_alive_event.set()
|
|
else:
|
|
print("Other stuff is happening")
|
|
else:
|
|
print("No newline found")
|
|
|
|
|
|
def watchdog(keep_alive_event):
|
|
while True:
|
|
alive = keep_alive_event.wait(1.0)
|
|
|
|
if alive:
|
|
print("Yay!")
|
|
keep_alive_event.clear()
|
|
else:
|
|
print("Nay!")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
pi = serial.Serial('/dev/tty.usbmodem2101')
|
|
|
|
pi.baudrate = 115200
|
|
pi.timeout = 0.1
|
|
|
|
print(pi)
|
|
|
|
keep_alive = threading.Event()
|
|
|
|
listen_thread = threading.Thread(target=listen, args=(keep_alive, pi))
|
|
|
|
watchdog_thread= threading.Thread(target=watchdog, args=(keep_alive,))
|
|
|
|
listen_thread.start()
|
|
watchdog_thread.start()
|
|
|