Mercurial > pygpibtoolkit / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HP3562A/dump_datablock.py	Tue Dec 18 00:23:10 2007 +0100
@@ -0,0 +1,78 @@
+import sys
+import time
+import gpib
+import prologix
+
+
+class HP3562dumper(prologix.GPIB):
+
+    MODES = {'trace': 'DD',
+             'state': 'DS',
+             'coord': 'DC',
+             }
+    
+    FORMATS = {'binary': 'BN',
+               'ascii': 'AS',
+               'ansi': 'AN'}
+            
+    def __init__(self, device="/dev/ttyUSB0", baudrate=115200, timeout=0.1,
+                 address=0):
+        super(HP3562dumper, self).__init__(device, baudrate, timeout, address, mode=1)
+
+    def dump(self, mode='trace', format="binary"): 
+        format = format.lower()
+        mode = mode.lower()
+        assert mode in self.MODES
+        assert format in self.FORMATS
+        cmd = self.MODES[mode] + self.FORMATS[format]
+
+        res = ""
+        print "command = ", cmd
+        self._cnx.write('%s\r'%cmd)
+        i = 0
+        while i<self._retries:
+            l = self._cnx.readline()
+            if l.strip() == "":
+                i += 1
+                time.sleep(self._timeout)
+                continue
+            res += l 
+            i = 0
+        return res
+
+    
+
+def main():
+    import optparse
+    opt = optparse.OptionParser("A simple tool for dumping the current trace")
+    opt.add_option('-f', '--filename', default=None,
+                   dest='filename',
+                   help='Output filename. If not set, write to stdout')
+    opt.add_option('-d', '--device', default='/dev/ttyUSB0',
+                   dest='device',
+                   help='Device of the RS232 connection (default: /dev/ttyUSB0)',
+                   )
+    opt.add_option('-a', '--address', default=0,
+                   dest='address',
+                   help='GPIB address of the device',
+                   )
+    opt.add_option('-b', '--block', default='trace',
+                   dest='block',
+                   help='Data block to dump (may be "trace" [default], "state" or "coord")',
+                   )
+    opt.add_option('-m', '--mode', default='binary',
+                   dest='mode',
+                   help='Dumping mode (may be "binary" [default], "ascii" or "ansi")',
+                   )
+    options, argv = opt.parse_args(sys.argv)
+
+    cnx = HP3562dumper(device=options.device, address=int(options.address))
+    res = cnx.dump(mode=options.block, format=options.mode)
+    sys.stderr.write("read %s bytes\n"%(len(res)))
+    if options.filename:
+        open(options.filename, 'w').write(res)
+    else:
+        print res
+    
+if __name__=='__main__':
+    main()