def run_example(): board_num = 0 if use_device_detection: ul.ignore_instacal() if not util.config_first_detected_device(board_num): print("Could not find device.") return channel = 0 ao_props = AnalogOutputProps(board_num) if ao_props.num_chans < 1: util.print_unsupported_example(board_num) return ao_range = ao_props.available_ranges[0] data_value = ao_range.range_max / 2 try: print("Outputting " + str(data_value) + " Volts to channel " + str(channel) + ".") # Send the value to the device (optional parameter omitted) ul.v_out(board_num, channel, ao_range, data_value) except ULError as e: util.print_ul_error(e) finally: if use_device_detection: ul.release_daq_device(board_num)
def _get_supports_v_out(self, available_ranges): if len(available_ranges) == 0: return False try: ul.v_out(self._board_num, 0, available_ranges[0], 0) except ULError: return False return True
def update_value(self): channel = self.get_channel_num() ao_range = self.ao_info.supported_ranges[0] data_value = self.get_data_value() try: # Send the value to the device (optional parameter omitted) ul.v_out(self.board_num, channel, ao_range, data_value) except ULError as e: show_ul_error(e)
def supports_v_out(self): ranges_supported = self.supported_ranges v_out_supported = False if ranges_supported: try: ul.v_out(self._board_num, 0, ranges_supported[0], 0) v_out_supported = True except ULError: v_out_supported = False return v_out_supported
def run_example(): # By default, the example detects and displays all available devices and # selects the first device listed. Use the dev_id_list variable to filter # detected devices by device ID (see UL documentation for device IDs). # If use_device_detection is set to False, the board_num variable needs to # match the desired board number configured with Instacal. use_device_detection = True dev_id_list = [] board_num = 0 try: if use_device_detection: config_first_detected_device(board_num, dev_id_list) daq_dev_info = DaqDeviceInfo(board_num) if not daq_dev_info.supports_analog_output: raise Exception('Error: The DAQ device does not support ' 'analog output') print('\nActive DAQ device: ', daq_dev_info.product_name, ' (', daq_dev_info.unique_id, ')\n', sep='') ao_info = daq_dev_info.get_ao_info() ao_range = ao_info.supported_ranges[0] channel = 0 data_value = ao_range.range_max / 2 print('Outputting', data_value, 'Volts to channel', channel) # Send the value to the device (optional parameter omitted) ul.v_out(board_num, channel, ao_range, data_value) except Exception as e: print('\n', e) finally: if use_device_detection: ul.release_daq_device(board_num)