thodg/cgminer/usbtest.py

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• Hash : 288f5e3b
  Author :
  Date : 2013-05-17T19:12:31
  

  simple serial-USB python test script

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• usbtest.py

• #!/usr/bin/env python2.7
  #
  # Original version supplied to me (Kano/kanoi) by xiangfu
  #
  # Modified to allow supplying the data to send
  #
  # Linux usAge: ./ubstest.py /dev/ttyUSB0 0xhexcodes|string|icarus
  #  OR		python ubstest.py /dev/ttyUSB0 0xhexcodes|string|icarus
  #
  # Windows usAge: ./ubstest.py COM1 0xhexcodes|string|icarus
  #
  #   sends the data sepcified to the USB device and waits
  #   for a reply then displays it
  #
  #   the data can be:
  #	0xhexcodes: e.g. 0x68656c6c6f20776f726c640a
  #			would send "hello world\n"
  #
  #	string: e.g. sendsometext
  #
  #	icarus: sends 2 known block payloads for an icarus device
  #		and shows the expected and actual answers if it's
  #		a working V3 icarus
  
  import sys
  import serial
  import binascii
  
  if len(sys.argv) < 2:
  	sys.stderr.write("usAge: " + sys.argv[0] + " device strings...\n")
  	sys.stderr.write(" where device is either like /dev/ttyUSB0 or COM1\n")
  	sys.stderr.write(" and strings are either '0xXXXX' or 'text'\n")
  	sys.stderr.write(" if the first string is 'icarus' the rest are ignored\n")
  	sys.stderr.write("  and 2 valid icarus test payloads are sent with results displayed\n")
  	sys.stderr.write("\nAfter any command is sent it waits up to 30 seconds for a reply\n");
  	sys.exit("Aborting")
  
  # Open with a 10 second timeout - just to be sure
  ser = serial.Serial(sys.argv[1], 115200, serial.EIGHTBITS, serial.PARITY_NONE, serial.STOPBITS_ONE, 10, False, False, 5, False, None)
  
  if sys.argv[2] == "icarus":
  
  	# This show how Icarus use the block and midstate data
  	# This will produce nonce 063c5e01
  	block = "0000000120c8222d0497a7ab44a1a2c7bf39de941c9970b1dc7cdc400000079700000000e88aabe1f353238c668d8a4df9318e614c10c474f8cdf8bc5f6397b946c33d7c4e7242c31a098ea500000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000080020000"
  	midstate = "33c5bf5751ec7f7e056443b5aee3800331432c83f404d9de38b94ecbf907b92d"
  
  	rdata2  = block.decode('hex')[95:63:-1]
  	rmid    = midstate.decode('hex')[::-1]
  	payload = rmid + rdata2
  
  	print("Push payload to icarus: " + binascii.hexlify(payload))
  	ser.write(payload)
  
  	b=ser.read(4)
  	print("Result:(should be: 063c5e01): " + binascii.hexlify(b))
  
  	# Just another test
  	payload2 = "ce92099c5a80bb81c52990d5c0924c625fd25a535640607d5a4bdf8174e2c8d500000000000000000000000080000000000000000b290c1a42313b4f21b5bcb8"
  	print("Push payload to icarus: " + payload2)
  	ser.write(payload2.decode('hex'))
  
  	b=ser.read(4)
  	print("Result:(should be: 8e0b31c5): " + binascii.hexlify(b))
  else:
  	data = ""
  	for arg in sys.argv[2::]:
  		if arg[0:2:] == '0x':
  			data += arg[2::].decode('hex')
  		else:
  			data += arg
  
  	print("Sending: 0x" + binascii.hexlify(data))
  	ser.write(data)
  
  	# If you're expecting more than one linefeed terminated reply,
  	# you'll only see the first one
  	# AND with no linefeed, this will wait the 10 seconds before returning
  	print("Waiting up to 10 seconds ...")
  	b=ser.readline()
  	print("Result: hex 0x" + binascii.hexlify(b))
  
  	# This could mess up the display - do it last
  	print("Result: asc '" + b + "'")
  
  ser.close()
  

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