def exchange(self, msg_send, block = True):
if block: # Blocking read returns message on success,
while not self.any(): # None on timeout
pass
else: # Nonblocking read returns message on success,
if not self.any(): # None on timeout, False on no data
return False
msg_rx = FromMaster()
if self.await_message(msg_rx):
self.sendbuf(msg_send) # Sometimes returns False when it has actually worked.
return msg_rx.unpack() # In this instance don't discard received data.
return None # Timeout
def exchange(self, msg_send, block = True):
if block: # Blocking read returns message on success,
while not self.any(): # None on timeout
pass
else: # Nonblocking read returns message on success,
if not self.any(): # None on timeout, False on no data
return False
msg_rx = FromMaster()
if self.await_message(msg_rx):
if self.sendbuf(msg_send):
return msg_rx.unpack()
return None # Timeout
def exchange(self, msg_send, block=True):
if block: # Blocking read returns message on success,
while not self.any(): # None on timeout
pass
else: # Nonblocking read returns message on success,
if not self.any(): # None on timeout, False on no data
return False
msg_rx = FromMaster()
if self.await_message(msg_rx):
if self.sendbuf(msg_send):
return msg_rx.unpack()
return None # Timeout