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Code: Alles auswählen

import time
import sys
import os

sys.path.extend(['./site-packages'])

import serial

toHex = lambda x:" ".join([hex(ord(c))[2:].zfill(2).upper() for c in x])
if os.name == 'posix':
   rs232 = serial.Serial('/dev/ttyUSB0',57600,timeout=3)
elif os.name == 'nt':
   rs232 = serial.Serial('COM19',57600,timeout=3)
else:
   raise Exception('ungueltiges os: {0}'.format(os.name))
   
msg = '\x02\x00\x09\x00\x3D\x01\x05\x41\x41\x41\x41\x41\x91\x03'
print toHex(msg)
result = rs232.write(msg)
while rs232.inWaiting() == 0:pass
x = rs232.read(rs232.inWaiting())
print toHex(x)
rs232.close()

Code: Alles auswählen

#!/usr/bin/env python
import os
import sys
sys.path.append('./site-packages')
import serial


def to_hex(string):
    return ' '.join(c.encode('hex') for c in string).upper()


def main():
    os_name2serial_port = {
        'nt': 'COM19',
        'posix': '/dev/ttyUSB0',
    }
    try:
        port = os_name2serial_port[os.name]
    except KeyError:
        raise Exception('ungueltiges bs: {0}'.format(os.name))
    else:
        with serial.Serial(port, 57600, timeout=3) as rs232:
            message = '\x02\x00\x09\x00\x3D\x01\x05\x41\x41\x41\x41\x41\x91\x03'
            print to_hex(message)
            rs232.write(message)
            rs232.flush()
            while True:
                response = rs232.read(1024)
                if response:
                    break
            print to_hex(response)


if __name__ == '__main__':
    main()