def testInvalidBouncetime(self):
with self.assertRaises(ValueError):
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, bouncetime=-1)
with self.assertRaises(ValueError):
GPIO.wait_for_edge(LOOP_IN, GPIO.RISING, bouncetime=-1)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, bouncetime=123)
with self.assertRaises(RuntimeError):
GPIO.wait_for_edge(LOOP_IN, GPIO.RISING, bouncetime=321)
GPIO.remove_event_detect(LOOP_IN)
def test_event_detected(self):
self.switchcount = 0
print(
"\nGPIO.event_detected() switch bounce test. Press switch at least 10 times and count..."
)
GPIO.add_event_detect(SWITCH_PIN, GPIO.FALLING, bouncetime=200)
while self.switchcount < 10:
if GPIO.event_detected(SWITCH_PIN):
self.switchcount += 1
print('Button press', self.switchcount)
GPIO.remove_event_detect(SWITCH_PIN)
def testRisingEventDetected(self):
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING)
time.sleep(0.01)
self.assertEqual(GPIO.event_detected(LOOP_IN), False)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.01)
self.assertEqual(GPIO.event_detected(LOOP_IN), True)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.01)
self.assertEqual(GPIO.event_detected(LOOP_IN), False)
GPIO.remove_event_detect(LOOP_IN)
def test_switchbounce(self):
self.switchcount = 0
print(
"\nSwitch bounce test. Press switch at least 10 times and count..."
)
GPIO.add_event_detect(SWITCH_PIN,
GPIO.FALLING,
callback=self.cb,
bouncetime=200)
while self.switchcount < 10:
time.sleep(1)
GPIO.remove_event_detect(SWITCH_PIN)
def testExceptionInCallback(self):
self.run_cb = False
def cb(channel):
with self.assertRaises(ZeroDivisionError):
self.run_cb = True
a = 1 / 0
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, callback=cb)
time.sleep(0.01)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.01)
self.assertEqual(self.run_cb, True)
GPIO.remove_event_detect(LOOP_IN)
def testShellCmdWithEventCallback(self):
self.run_cb = False
def cb(channel):
self.run_cb = True
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, callback=cb)
time.sleep(0.01)
for i in range(50):
os.system('sleep 0')
subprocess.call('sleep 0', shell=True)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.01)
GPIO.remove_event_detect(LOOP_IN)
self.assertEqual(self.run_cb, True)
def testWaitForEdgeWithCallback(self):
def cb():
raise Exception("Callback should not be called")
def makehigh():
GPIO.output(LOOP_OUT, GPIO.HIGH)
GPIO.output(LOOP_OUT, GPIO.LOW)
t = Timer(0.1, makehigh)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING)
t.start()
GPIO.wait_for_edge(LOOP_IN, GPIO.RISING)
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_callback(LOOP_IN, callback=cb)
with self.assertRaises(RuntimeError): # conflicting edge exception
GPIO.wait_for_edge(LOOP_IN, GPIO.RISING)
GPIO.remove_event_detect(LOOP_IN)
def testAddEventCallback(self):
def cb(channel):
self.callback_count += 1
# falling test
self.callback_count = 0
GPIO.output(LOOP_OUT, GPIO.HIGH)
GPIO.add_event_detect(LOOP_IN, GPIO.FALLING)
GPIO.add_event_callback(LOOP_IN, cb)
time.sleep(0.01)
for i in range(2048):
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
GPIO.remove_event_detect(LOOP_IN)
self.assertEqual(self.callback_count, 2048)
# rising test
self.callback_count = 0
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, callback=cb)
time.sleep(0.01)
for i in range(2048):
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
GPIO.remove_event_detect(LOOP_IN)
self.assertEqual(self.callback_count, 2048)
# both test
self.callback_count = 0
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.BOTH, callback=cb)
time.sleep(0.01)
for i in range(2048):
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
GPIO.remove_event_detect(LOOP_IN)
self.assertEqual(self.callback_count, 4096)
def testAlreadyAdded(self):
GPIO.add_event_detect(LOOP_IN, GPIO.RISING)
with self.assertRaises(RuntimeError):
GPIO.add_event_detect(LOOP_IN, GPIO.RISING)
GPIO.remove_event_detect(LOOP_IN)
