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 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(0.001)
self.assertEqual(GPIO.event_detected(LOOP_IN), False)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
self.assertEqual(GPIO.event_detected(LOOP_IN), True)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
self.assertEqual(GPIO.event_detected(LOOP_IN), False)
GPIO.remove_event_detect(LOOP_IN)
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(0.001)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
self.assertEqual(self.run_cb, True)
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(0.001)
for i in range(5):
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
self.assertEqual(self.callback_count, 5)
GPIO.remove_event_detect(LOOP_IN)
# rising test
self.callback_count = 0
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.RISING, callback=cb)
time.sleep(0.001)
for i in range(5):
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
self.assertEqual(self.callback_count, 5)
GPIO.remove_event_detect(LOOP_IN)
# both test
self.callback_count = 0
GPIO.output(LOOP_OUT, GPIO.LOW)
GPIO.add_event_detect(LOOP_IN, GPIO.BOTH, callback=cb)
time.sleep(0.001)
for i in range(5):
GPIO.output(LOOP_OUT, GPIO.HIGH)
time.sleep(0.001)
GPIO.output(LOOP_OUT, GPIO.LOW)
time.sleep(0.001)
self.assertEqual(self.callback_count, 10)
GPIO.remove_event_detect(LOOP_IN)
#!/usr/bin/env python import RaPi.GPIO as GPIO import time from threading import Timer SWITCH_PIN = 18 GPIO.setmode(GPIO.BOARD) GPIO.setup(SWITCH_PIN,GPIO.IN,GPIO.PUD_UP) print "\n value_%d = %d\n" %(SWITCH_PIN,GPIO.input(SWITCH_PIN)) GPIO.add_event_detect(SWITCH_PIN, GPIO.RISING,bouncetime=200) # add rising edge detection on a channel switchcount = 0 while switchcount < 2: if GPIO.event_detected(SWITCH_PIN): switchcount += 1 print 'Button pressed',switchcount print "\n value_%d = %d\n" %(SWITCH_PIN,GPIO.input(SWITCH_PIN)) GPIO.remove_event_detect(SWITCH_PIN)
