Mercurial > pygpibtoolkit / file comparison
comparison: HP3562A/dump_trace.py
HP3562A/dump_trace.py
- changeset 14
- 07e2cbf140df
- parent 13
- 78e3e839658b
- child 15
- b930440af354
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| 13:78e3e839658b | 14:07e2cbf140df |
|---|---|
| 1 import sys | |
| 2 import time | |
| 3 import gpib | |
| 4 | |
| 5 class HP3562dumper(gpib.GPIB): | |
| 6 | |
| 7 MODES = {'trace': 'DD', | |
| 8 'state': 'DS', | |
| 9 'coord': 'DC', | |
| 10 } | |
| 11 | |
| 12 FORMATS = {'binary': 'BN', | |
| 13 'ascii': 'AS', | |
| 14 'ansi': 'AN'} | |
| 15 | |
| 16 def __init__(self, device="/dev/ttyUSB0", baudrate=115200, timeout=0.1, | |
| 17 address=0): | |
| 18 super(HP3562dumper, self).__init__(device, baudrate, timeout, address, mode=1) | |
| 19 | |
| 20 def dump(self, mode='trace', format="binary"): | |
| 21 format = format.lower() | |
| 22 mode = mode.lower() | |
| 23 assert mode in self.MODES | |
| 24 assert format in self.FORMATS | |
| 25 cmd = self.MODES[mode] + self.FORMATS[format] | |
| 26 | |
| 27 res = "" | |
| 28 print "command = ", cmd | |
| 29 self._cnx.write('%s\r'%cmd) | |
| 30 i = 0 | |
| 31 while i<self._retries: | |
| 32 l = self._cnx.readline() | |
| 33 if l.strip() == "": | |
| 34 i += 1 | |
| 35 time.sleep(self._timeout) | |
| 36 continue | |
| 37 res += l | |
| 38 i = 0 | |
| 39 return res | |
| 40 | |
| 41 | |
| 42 | |
| 43 if __name__=='__main__': | |
| 44 import optparse | |
| 45 opt = optparse.OptionParser("A simple tool for dumping the current trace") | |
| 46 opt.add_option('-f', '--filename', default=None, | |
| 47 dest='filename', | |
| 48 help='Output filename. If not set, write to stdout') | |
| 49 opt.add_option('-d', '--device', default='/dev/ttyUSB0', | |
| 50 dest='device', | |
| 51 help='Device of the RS232 connection (default: /dev/ttyUSB0)', | |
| 52 ) | |
| 53 opt.add_option('-a', '--address', default=0, | |
| 54 dest='address', | |
| 55 help='GPIB address of the device', | |
| 56 ) | |
| 57 opt.add_option('-b', '--block', default='trace', | |
| 58 dest='block', | |
| 59 help='Data block to dump (may be "trace" [default], "state" or "coord")', | |
| 60 ) | |
| 61 opt.add_option('-m', '--mode', default='binary', | |
| 62 dest='mode', | |
| 63 help='Dumping mode (may be "binary" [default], "ascii" or "ansi")', | |
| 64 ) | |
| 65 options, argv = opt.parse_args(sys.argv) | |
| 66 | |
| 67 cnx = HP3562dumper(device=options.device, address=int(options.address)) | |
| 68 res = cnx.dump(mode=options.block, format=options.mode) | |
| 69 sys.stderr.write("read %s bytes\n"%(len(res))) | |
| 70 if options.filename: | |
| 71 open(options.filename, 'w').write(res) | |
| 72 else: | |
| 73 print res | |
| 74 |
