test_5444d.py

# This works
status = ps5000a.ps5000aSetSimpleTrigger(
  self.handle,                                          # handle
  ctypes.c_int16(1),                                      # enable
  ps5000a.PS5000A_CHANNEL['PS5000A_EXTERNAL'],
  ctypes.c_int16(800),
  ps5000a.PS5000A_THRESHOLD_DIRECTION[f'PS5000A_RISING'], 
  ctypes.c_uint32(0),                                  
  ctypes.c_int16(1000)                            
)
assert_pico_ok(status)
  
  
# THIS IS NOT WORKING, it will just capture anything like it was disabled
channel_external = ps5000a.PS5000A_CHANNEL['PS5000A_EXTERNAL']

class TRIGGER_CONDITION(ctypes.Structure):
			_fields_ = [
				("source", ctypes.c_int16),
				("condition", ctypes.c_int16)
			]

condition_external = TRIGGER_CONDITION(channel_external, ps5000a.PS5000A_TRIGGER_STATE['PS5000A_CONDITION_TRUE'])
conditions = (TRIGGER_CONDITION * 1)(condition_external)
status = ps5000a.ps5000aSetTriggerChannelConditionsV2(
  self.handle,
  ctypes.byref(conditions),
  len(conditions),       # nConditions
  1,       # clear
)
assert_pico_ok(status)

# Set up external trigger properties
trigger_external = ps5000a.PS5000A_TRIGGER_CHANNEL_PROPERTIES_V2(
  13107,  # thresholdUpper
  0,          # thresholdUpperHysteresis
  0,                   # thresholdLower
  0,                   # thresholdLowerHysteresis
  channel_external,    # channel - now using the specified source
)

triggers = (ps5000a.PS5000A_TRIGGER_CHANNEL_PROPERTIES_V2 * 1)(trigger_external)
status = ps5000a.ps5000aSetTriggerChannelPropertiesV2(
  self.handle,
  ctypes.byref(triggers),
  len(triggers),      # nProperties
  0,      # auxOutputEnable
)
assert_pico_ok(status)

# Set trigger direction
directions = {
  'ABOVE': ps5000a.PS5000A_THRESHOLD_DIRECTION['PS5000A_ABOVE'],
  'BELOW': ps5000a.PS5000A_THRESHOLD_DIRECTION['PS5000A_BELOW'],
  'RISING': ps5000a.PS5000A_THRESHOLD_DIRECTION['PS5000A_RISING'],
  'FALLING': ps5000a.PS5000A_THRESHOLD_DIRECTION['PS5000A_FALLING']
}

class PS5000A_DIRECTION_V2(ctypes.Structure):
  _fields_ = [
    ("channel", ctypes.c_int32),
    ("direction", ctypes.c_int32)
  ]

direction_external = PS5000A_DIRECTION_V2(channel_external, directions['RISING'])

# Create array of direction structures
directions = (PS5000A_DIRECTION_V2 * 1)(direction_external)

status = ps5000a.ps5000aSetTriggerChannelDirectionsV2(
  self.handle,
  ctypes.byref(directions),
  len(directions)  # number of directions being set
)
assert_pico_ok(status)