57 lines
1.1 KiB
Python
57 lines
1.1 KiB
Python
#!/usr/bin/env python2
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import sys
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import serial
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import crcmod.predefined
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def hexdump(data):
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res = ""
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for char in data:
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res += "%X " % (ord(char))
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return res
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def main():
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if len(sys.argv) != 2:
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print "Usage %s <port>" % (sys.argv[0])
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sys.exit(-1)
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ser = serial.Serial(sys.argv[1], 9600, timeout=0.40)
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data = ""
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while True:
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while data == "":
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data = ser.read(19)
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if len(data) != 19:
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print "No Frame:\t" + hexdump(data)
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continue
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header_ok = data.startswith(chr(0xAA) + chr(0xFE))
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line = ""
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if header_ok:
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line += "Header Ok "
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else:
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line += "Header not Ok "
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payload = data[2:18]
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crc = crcmod.predefined.Crc('crc-8-maxim')
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crc.update(payload)
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crc_sum = crc.digest()
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if data[18] == crc_sum:
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line += "CRC Ok "
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else:
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line += "CRC not Ok "
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line += hexdump(payload)
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print line
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if __name__ == '__main__':
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main()
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