def adjust(channel):
jogLength = 800 # about half a micron out of 20 um of
currentPos = int(0)
Done = False
while not Done:
try:
if keyboard.is_pressed(
'q'): # press q to exit the while loop and stop motion
print('Adjustment Complete')
return
elif keyboard.is_pressed(
'w'): # press w to increase the rate of motion
currentPos = int(bp.PBC_GetPosition(serialno, channel))
bp.PBC_SetPosition(serialno, channel,
c_short(currentPos + jogLength))
print("current position of channel ", channel, ": ",
currentPos + jogLength)
elif keyboard.is_pressed(
's'): # press s to decrease the rate of motion
currentPos = int(bp.PBC_GetPosition(serialno, channel))
bp.PBC_SetPosition(serialno, channel,
c_short(currentPos - jogLength))
print("current position of channel ", channel, ": ",
currentPos + jogLength)
except:
continue
def position(self, channel: int, percent: int = None) -> int:
"""
Sets the position of the requested channel when in closed loop mode.
If no position is specified, simply returns the current position.
Parameters
----------
channel : int
The channel to get or set the position for (1-n).
percent : int, optional
The position as a percentage of maximum travel, range 0 to 32767,
equivalent to 0 to 100%. If not specified (None), current position
is returned.
Returns
-------
pos : int
The position as a percentage of maximum travel, range -32767 to
32767, equivalent to -100 to 100%. The result is undefined if not
in closed loop mode.
"""
channel = self._verify_channel(channel)
if percent is not None:
percent = self._saturate(percent, 0, MAX_C_SHORT)
bp.PBC_SetPosition(self._serialno, channel, c_short(percent))
else:
return bp.PBC_GetPosition(self._serialno, channel)
def couple():
maxTravel = 32767 # travel is from 0 to 32767 for 20 um
jogLength = int(16) # just under 10 nm of travel
currentPos = int(0)
Done = False
while not Done:
try:
if keyboard.is_pressed(
'q'): # press q to exit the while loop and stop motion
print('Pull Complete')
return
elif keyboard.is_pressed(
'w'): # press w to increase the rate of motion
jogLength += int(2)
print("jogLength: ", jogLength)
elif keyboard.is_pressed(
's'): # press s to decrease the rate of motion
if jogLength > 4:
jogLength -= int(2)
print("jogLength: ", jogLength)
except:
continue
currentPos = int(bp.PBC_GetPosition(serialno, bp.Channel1))
bp.PBC_SetPosition(serialno, bp.Channel1,
c_short(currentPos + jogLength))
print("current position between 0 and 32767 (short): ", currentPos)
time.sleep(0.2)
def downShift():
jogLength = int(16)
currentPos = int(bp.PBC_GetPosition(serialno, bp.Channel1))
bp.PBC_SetPosition(serialno, bp.Channel1, c_short(currentPos - jogLength))