def parse_args():
"""
Parses arguments for this program.
Returns:
An object with the following attributes:
serialport (str): what is after -s or --serial on the command line
"""
# try to automatically find the port
port = textserial.get_port()
if port == None:
port = "0"
parser = argparse.ArgumentParser(
description="Serial port communication testing program.", epilog="If the port is 0, stdin/stdout are used.\n"
)
parser.add_argument(
"-s", "--serial", help="path to serial port " '(default value: "%s")' % port, dest="serialport", default=port
)
return parser.parse_args()
def parse_args():
"""
Parses arguments for this program.
Returns:
An object with the following attributes:
serialport (str): what is after -s or --serial on the command line
"""
# try to automatically find the port
port = textserial.get_port()
if port == None:
port = "0"
parser = argparse.ArgumentParser(
description='Serial port communication testing program.',
epilog='If the port is 0, stdin/stdout are used.\n')
parser.add_argument('-s',
'--serial',
help='path to serial port '
'(default value: "%s")' % port,
dest='serialport',
default=port)
return parser.parse_args()
# Restart the communication attempt
communication()
'''
process route finding requests here
'''
if __name__ == "__main__":
edmonton = read_city_graph("edmonton-roads-2.0.1.txt")
#print("Done importing Edmonton map to a graph.")
try:
# if one has an echo program:
baud = 9600
port = textserial.get_port()
if port == None:
print("No suitable port found, exiting")
#return
#print("Attempting to use an 'echo' program on",port)
with textserial.TextSerial(port,baud,newline='\n') as ser:
while True:
communication()
except serial.SerialException as exc:
print("Failure. \n",exc)
except OSError as exc: # error on Linux
if exc.errno!=2:
raise
print("Failure. \n",exc)