from __future__ import print_function
import NPi.GPIO as GPIO
import time
PIN_NUM = 12
GPIO.setmode(GPIO.BOARD)
GPIO.setup(PIN_NUM, GPIO.IN, GPIO.PUD_DOWN)
print("The value of Pin %d is %d" % (PIN_NUM, GPIO.input(PIN_NUM)))
def my_callback(channel):
print("Callback trigger %d" % channel)
print("Now value of the Pin is %d" % (GPIO.input(PIN_NUM)))
print("Click Ctr + C to exit")
GPIO.add_event_detect(PIN_NUM,
GPIO.RISING,
callback=my_callback,
bouncetime=300)
try:
while True:
time.sleep(0.1)
except KeyboardInterrupt:
pass
GPIO.cleanup()
#!/usr/bin/env python
from __future__ import print_function
import NPi.GPIO as GPIO
import time
from threading import Timer
SWITCH_PIN = 10
GPIO.setmode(GPIO.BOARD)
GPIO.setup(SWITCH_PIN, GPIO.IN, GPIO.PUD_DOWN)
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)
