Merge pull request #153 from thennen/master

Save the channel attenuation when using setChannel

Author: hmaarrfk

picoscope/picobase.py

@@ -138,6 +138,7 @@ def __init__(self, serialNumber=None, connect=True):
         # the "true" voltage as seen at the oscilloscope probe
         self.CHRange = [5.0] * self.NUM_CHANNELS
         self.CHOffset = [0.0] * self.NUM_CHANNELS
+        self.CHCoupling = [1] * self.NUM_CHANNELS
         self.ProbeAttenuation = [1.0] * self.NUM_CHANNELS
 
         self.handle = None
@@ -265,6 +266,7 @@ def setChannel(self, channel='A', coupling="AC", VRange=2.0,
         # if all was successful, save the parameters
         self.CHRange[chNum] = VRange
         self.CHOffset[chNum] = VOffset
+        self.CHCoupling[chNum] = coupling
         self.ProbeAttenuation[chNum] = probeAttenuation
 
         return VRange