Mercurial > avr_jtag

annotate py_avrjtag/cp_tditdo.py @ 4:6b1594fb668f

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Improve performance of jtag.c and test it with Python scripts. - cp_tditdo.py send bits to TDI and hope it will feed back from TDO. - Expand loops in jtag.c to improve performance.
author Thinker K.F. Li <thinker@branda.to>
date Sun, 22 Feb 2009 12:54:45 +0800
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children
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4
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
parents:
diff changeset
1 import cmd_proto
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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2
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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3 def cp_tms(seq, nbits, data):
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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4 nbits_bytes = chr(nbits & 0xff) + chr(nbits >> 8)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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5 cmd = cmd_proto.cmd(seq, cmd_proto.CPCMD_SHIFT_TDI_TDO,
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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6 nbits_bytes + data)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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7 frame = cmd.to_frame()
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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8 return frame
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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9
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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10 def get_reply(fo):
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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11 import fcntl, os
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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12 import time
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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13
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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14 reply = ''
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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15 fcntl.fcntl(fo.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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16 while True:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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17 try:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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18 s = os.read(fo.fileno(), 256)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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19 except OSError:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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20 time.sleep(0.13)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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21 try:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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22 s = os.read(fo.fileno(), 256)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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23 except OSError:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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24 break
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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25 pass
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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26 reply = reply + s
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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27 pass
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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28 return reply
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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29
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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30 if __name__ == '__main__':
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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31 import sys
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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32
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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33 if len(sys.argv) != 2:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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34 print >> sys.stderr, 'Usage: prog <port device>'
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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35 sys.exit(1)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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36 pass
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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37
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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38 port = sys.argv[1]
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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39
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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40 fo = open(port, 'r+b')
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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41 cmd_str = cp_tms(12, 37, 'hello')
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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42 fo.write(cmd_str)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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43 fo.flush()
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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44
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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45 frame = get_reply(fo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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46 cmd = cmd_proto.cmd()
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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47 r = cmd.from_frame(frame)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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48 if r:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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49 print 'frame error %s' % (repr(frame))
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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50 else:
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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51 print repr(cmd)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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52 pass
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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53 pass
6b1594fb668f Improve performance of jtag.c and test it with Python scripts.
Thinker K.F. Li <thinker@branda.to>
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54