A more recent update. I came across this post and it did exactly what I was looking for. This person used threading instead of multiprocessing to handle serial read and write separately and it worked reasonably well. I will post the code below
Here is the original artcle on Medium describing the code:
https://tesudo-yamasaki.medium.com/tran ... 1e2068b8e9
Gerry.
Code:
import serialimport threadingimport timeDEVICE_NAME = '/dev/ttyUSB0'DEVICE_BAUDRATE = 19200DEVICE_SETUP_KEY = '*'PORT_DELAY_SEC = 0.1def port_reader( port, delay=PORT_DELAY_SEC ) : while True : time.sleep( delay ) if ( not port.in_waiting ) : continue with threading.Lock() : line = port.read( port.in_waiting ) print( line.decode(), end='' )def port_writer( port, setup_key=DEVICE_SETUP_KEY, delay=PORT_DELAY_SEC ) : while True : time.sleep( delay ) command = input() if ( command != setup_key ) : command += '\n' with threading.Lock() : port.write( command.encode() )if __name__ == '__main__' : port = serial.Serial( DEVICE_NAME, baudrate=DEVICE_BAUDRATE ) thread_reader = threading.Thread( target=port_reader, args=(port,) ) thread_writer = threading.Thread( target=port_writer, args=(port,) ) thread_reader.start() thread_writer.start() thread_reader.join() thread_writer.join()https://tesudo-yamasaki.medium.com/tran ... 1e2068b8e9
Gerry.
Statistics: Posted by gerrypkan — Mon Apr 08, 2024 12:19 pm