def test_output_objects(self): OUTPUT_SLEEP_DELAY = 0.01 # test there are no outputs self.assertEqual(0, pfio.read_output()) for led_num in range(1, 5): this_led = pfio.LED(led_num) this_led.turn_on() sleep(OUTPUT_SLEEP_DELAY) expected_output_bpat = 1 << (led_num-1) self.assertEqual(expected_output_bpat, pfio.read_output()) this_led.turn_off() sleep(OUTPUT_SLEEP_DELAY) self.assertEqual(0, pfio.read_output()) for relay_num in range(1, 3): this_relay = pfio.Relay(relay_num) this_relay.turn_on() sleep(OUTPUT_SLEEP_DELAY) expected_output_bpat = 1 << (relay_num-1) self.assertEqual(expected_output_bpat, pfio.read_output()) this_relay.turn_off() sleep(OUTPUT_SLEEP_DELAY) self.assertEqual(0, pfio.read_output())
def sensor_update(self, data):
index_is_data = False # ignore the loop contents if not sensor
zero_bit_mask = 0 # bit mask showing where zeros should be written
one_bit_mask = 0 # bit mask showing where ones should be written
we_should_update_piface = False
# go through all of the sensors that have been updated
for i in range(len(data)):
if index_is_data:
index_is_data = False
continue
sensor_name = data[i].strip('"')
# if this sensor is a piface output then reflect
# that update on the board
if sensor_name in SCRATCH_SENSOR_NAME_OUTPUT:
we_should_update_piface = True
pin_index = SCRATCH_SENSOR_NAME_OUTPUT.index(sensor_name)
sensor_value = int(data[i+1])
index_is_data = True
# could this be made more efficient by sending a single write
if sensor_value == 0:
zero_bit_mask ^= (1 << pin_index)
else:
one_bit_mask ^= (1 << pin_index)
if we_should_update_piface:
old_pin_bitp = pfio.read_output() # grab the old values
new_pin_bitp = old_pin_bitp & ~zero_bit_mask # set the zeros
new_pin_bitp |= one_bit_mask # set the ones
if new_pin_bitp != old_pin_bitp:
pfio.write_output(new_pin_bitp) # write the new bit pattern
def sensor_update(self, data):
index_is_data = False # ignore the loop contents if not sensor
zero_bit_mask = 0 # bit mask showing where zeros should be written
one_bit_mask = 0 # bit mask showing where ones should be written
we_should_update_piface = False
# go through all of the sensors that have been updated
for i in range(len(data)):
if index_is_data:
index_is_data = False
continue
sensor_name = data[i].strip('"')
# if this sensor is a piface output then reflect
# that update on the board
if sensor_name in SCRATCH_SENSOR_NAME_OUTPUT:
we_should_update_piface = True
pin_index = SCRATCH_SENSOR_NAME_OUTPUT.index(sensor_name)
sensor_value = int(data[i + 1])
index_is_data = True
# could this be made more efficient by sending a single write
if sensor_value == 0:
zero_bit_mask ^= (1 << pin_index)
else:
one_bit_mask ^= (1 << pin_index)
if we_should_update_piface:
old_pin_bitp = pfio.read_output() # grab the old values
new_pin_bitp = old_pin_bitp & ~zero_bit_mask # set the zeros
new_pin_bitp |= one_bit_mask # set the ones
if new_pin_bitp != old_pin_bitp:
pfio.write_output(new_pin_bitp) # write the new bit pattern
