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_digital_io:
raise Exception('Error: The DAQ device does not support '
'digital I/O')
print('\nActive DAQ device: ',
daq_dev_info.product_name,
' (',
daq_dev_info.unique_id,
')\n',
sep='')
dio_info = daq_dev_info.get_dio_info()
# Find the first port that supports input, defaulting to None
# if one is not found.
port = next(
(port for port in dio_info.port_info if port.supports_input), None)
if not port:
raise Exception('Error: The DAQ device does not support '
'digital input')
# If the port is configurable, configure it for input.
if port.is_port_configurable:
ul.d_config_port(board_num, port.type, DigitalIODirection.IN)
# Get a value from the digital port
port_value = ul.d_in(board_num, port.type)
# Get a value from the first digital bit
bit_num = 0
bit_value = ul.d_bit_in(board_num, port.type, bit_num)
# Display the port value
print(port.type.name, 'Value:', port_value)
# Display the bit value
print('Bit', bit_num, 'Value:', bit_value)
except Exception as e:
print('\n', e)
finally:
if use_device_detection:
ul.release_daq_device(board_num)
def update_value(self):
try:
# Get a value from the device
value = ul.d_bit_in(self.board_num, self.port.type,
self.port.first_bit)
# Display the value
self.value_label["text"] = str(value)
# Call this method again until the stop button is pressed (or an
# error occurs)
if self.running:
self.after(100, self.update_value)
except ULError as e:
self.stop()
self.show_ul_error(e)
def update_value(self):
try:
# Display the bit values
first_bit = self.port.first_bit
for bit_num in range(first_bit,
first_bit + min(self.port.num_bits, 8)):
# Get a value from the device
value = ul.d_bit_in(self.board_num, self.port.type, bit_num)
# Display it
self.bit_value_labels[bit_num]["text"] = str(value)
# Call this method again until the stop button is pressed (or an
# error occurs)
if self.running:
self.after(100, self.update_value)
except ULError as e:
self.stop()
show_ul_error(e)
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
digital_props = DigitalProps(board_num)
# Find the first port that supports input, defaulting to None
# if one is not found.
port = next(
(port for port in digital_props.port_info if port.supports_input),
None)
if port == None:
util.print_unsupported_example(board_num)
return
try:
# If the port is configurable, configure it for input.
if port.is_port_configurable:
ul.d_config_port(board_num, port.type, DigitalIODirection.IN)
# Get a value from the digital port
port_value = ul.d_in(board_num, port.type)
# Get a value from the first digital bit
bit_num = 0
bit_value = ul.d_bit_in(board_num, port.type, bit_num)
# Display the port value
print(port.type.name + " Value: " + str(port_value))
# Display the bit value
print("Bit " + str(bit_num) + " Value: " + str(bit_value))
except ULError as e:
util.print_ul_error(e)
finally:
if use_device_detection:
ul.release_daq_device(board_num)