def test_remove_pins(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
num_pins = len(interface.pins)
self.assertEqual(num_pins, 2, "Len should be 2")
interface.remove_pins("echo", "trigger")
num_pins = len(interface.pins)
self.assertEqual(num_pins, 0, "Len should be 1")
def test_set_pin_edge(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
interface.init_input("echo", "down")
# Test exception
with self.assertRaises(TypeError):
interface.set_pin_edge("echo", "aaa")
pin_num = interface.PIN_NUMBER_MAP[interface.pins["echo"].pin_num]
# Check rising
interface.set_pin_edge("echo", "rising")
intcon = interface._device.get_pin_intcon(pin_num)
def_val = interface._device.get_pin_def_val(pin_num)
self.assertEqual(intcon, 1, "Should be 1")
self.assertEqual(def_val, 0, "Should be 0")
# Check falling
interface.set_pin_edge("echo", "falling")
intcon = interface._device.get_pin_intcon(pin_num)
def_val = interface._device.get_pin_def_val(pin_num)
self.assertEqual(intcon, 1, "Should be 1")
self.assertEqual(def_val, 1, "Should be 1")
# Check both
interface.set_pin_edge("echo", "both")
intcon = interface._device.get_pin_intcon(pin_num)
def_val = interface._device.get_pin_def_val(pin_num)
self.assertEqual(intcon, 0, "Should be 0")
self.assertEqual(def_val, 0, "Should be 0")
def test_set_pin_event(self):
interface = Mcp23017GPIO(echo='A_0', trigger='A_1')
interface.init_input("echo", "down")
interface.init_input("trigger", "down")
def f(pin):
print("{} Rising edge signal on pin {}.".format(f.c, pin))
f.c += 1
f.c = 0
def f_1(pin):
print("{} Falling edge signal on pin {}.".format(f_1.c, pin))
f_1.c += 1
f_1.c = 0
echo_pin_num = interface.PIN_NUMBER_MAP[interface.pins["echo"].pin_num]
trigger_pin_num = \
interface.PIN_NUMBER_MAP[interface.pins["trigger"].pin_num]
interface.set_pin_edge("echo", "rising")
interface.set_pin_edge("trigger", "falling")
interface.set_pin_bounce("echo", 200)
interface.set_pin_bounce("trigger", 1000)
interface.set_pin_event("echo", f, echo_pin_num)
interface.set_pin_event("trigger", f_1, trigger_pin_num)
interface.start_polling(["echo", "trigger"])
time.sleep(5)
interface.stop_polling()
interface.close()
def test_wait_pin_for_edge(self):
interface = Mcp23017GPIO(echo='A_0', trigger='A_1')
interface.init_input("echo", "down")
interface.set_pin_edge("echo", "rising")
val = interface.wait_pin_for_edge("echo")
self.assertEqual(val, 1, "Should be 1")
val = interface.wait_pin_for_edge("echo", timeout=2000)
self.assertEqual(val, 0, "Should be 0")
def test_set_pin_bounce(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
interface.init_input("echo", "down")
# Test exception
with self.assertRaises(TypeError):
interface.set_pin_bounce("echo", 12.2)
pin_num = interface.PIN_NUMBER_MAP[interface.pins["echo"].pin_num]
val = 100
interface.set_pin_bounce("echo", 100)
bounce = interface._device._debounce[pin_num]
self.assertEqual(bounce, val/1000, "Should be 100")
def test_set_pin_pull(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
pull = "up"
pin = "echo"
interface.init_input(pin, pull)
self.assertEqual(interface.pins[pin].pull, pull,
"Pull should be {}".format(pull))
with self.assertRaises(TypeError):
interface.set_pin_pull("echo", "aa")
with self.assertRaises(NotInputPin):
interface.set_pin_pull("trigger", "up")
def test_set_pin_function(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
function = "input"
interface.set_pin_function("echo", function)
self.assertEqual(interface.pins["echo"].function, function,
"Should be {}".format(function))
function = "output"
interface.set_pin_function("trigger", function)
self.assertEqual(interface.pins["trigger"].function, function,
"Should be {}".format(function))
with self.assertRaises(TypeError):
interface.set_pin_function("trigger", "aa")
def test_add_pins(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
self.assertEqual(interface.pins['echo'].pin_num, 1, "Should be 1")
self.assertEqual(interface.pins['trigger'].pin_num, 10, "Should be 10")
def test_read(self):
interface = Mcp23017GPIO(echo='A_1', trigger='B_2')
interface.set_pin_function("echo", "input")
value = interface.read("echo")