Python GPIO.setmode Examples

Example #1

File: test.py Project: xapp-le/RaPi.GPIO

    def runTest(self):
        GPIO.setmode(GPIO.BCM)
        GPIO.setup(LED_PIN_BCM, GPIO.IN)
        self.assertEqual(GPIO.gpio_function(LED_PIN_BCM), GPIO.IN)
        GPIO.setup(LED_PIN_BCM, GPIO.OUT)
        self.assertEqual(GPIO.gpio_function(LED_PIN_BCM), GPIO.OUT)

        GPIO.setmode(GPIO.BOARD)
        GPIO.setup(LED_PIN, GPIO.IN)
        self.assertEqual(GPIO.gpio_function(LED_PIN), GPIO.IN)
        GPIO.setup(LED_PIN, GPIO.OUT)
        self.assertEqual(GPIO.gpio_function(LED_PIN), GPIO.OUT)

Example #2

File: test.py Project: xapp-le/RaPi.GPIO

    def runTest(self):
        # Test mode not set (BOARD or BCM) exception
        with self.assertRaises(RuntimeError) as e:
            GPIO.setup(LED_PIN, GPIO.OUT)
        self.assertEqual(str(e.exception), 'Please set pin numbering mode using GPIO.setmode(GPIO.BOARD) or GPIO.setmode(GPIO.BCM)')

        GPIO.setmode(GPIO.BOARD)

        # Test not set as OUTPUT message
        with self.assertRaises(RuntimeError) as e:
            GPIO.output(LED_PIN, GPIO.HIGH)
        self.assertEqual(str(e.exception), 'The GPIO channel has not been set up as an OUTPUT')

        GPIO.setup(LED_PIN, GPIO.IN)

        # Test setup(..., pull_up_down=GPIO.HIGH) raises exception
        with self.assertRaises(ValueError):
            GPIO.setup(LED_PIN, GPIO.IN, pull_up_down=GPIO.HIGH)

        # Test 'already in use' warning
        GPIO.cleanup()
        with open('/sys/class/gpio/export','wb') as f:
            f.write(str(LED_PIN_BCM).encode())
        with open('/sys/class/gpio/gpio%s/direction'%LED_PIN_BCM,'wb') as f:
            f.write(b'out')
        with open('/sys/class/gpio/gpio%s/value'%LED_PIN_BCM,'wb') as f:
            f.write(b'1')
        with warnings.catch_warnings(record=True) as w:
            GPIO.setup(LED_PIN, GPIO.OUT)    # generate 'already in use' warning
            self.assertEqual(w[0].category, RuntimeWarning)
        with open('/sys/class/gpio/unexport','wb') as f:
            f.write(str(LED_PIN_BCM).encode())
        GPIO.cleanup()

        # test initial value of high reads back as high
        GPIO.setup(LED_PIN, GPIO.OUT, initial=GPIO.HIGH)
        self.assertEqual(GPIO.input(LED_PIN), GPIO.HIGH)
        GPIO.cleanup()

        # test initial value of low reads back as low
        GPIO.setup(LED_PIN, GPIO.OUT, initial=GPIO.LOW)
        self.assertEqual(GPIO.input(LED_PIN), GPIO.LOW)
        GPIO.cleanup()

Example #3

File: gpio_pull.py Project: xapp-le/RaPi.GPIO

#!/usr/bin/env python
import RaPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.IN, pull_up_down=GPIO.PUD_UP)
print "\n value_7 = %d\n" %(GPIO.input(7))	

GPIO.setup(8, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
print "\n value_8 = %d\n" %(GPIO.input(8))	

GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_UP)
print "\n value_12 = %d\n" %(GPIO.input(12))	
GPIO.setup(12, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
print "\n value_12 = %d\n" %(GPIO.input(12))	

#GPIO.cleanup()

Example #4

File: polling_RAW.py Project: xapp-le/RaPi.GPIO

import RaPi.GPIO as GPIO
import time

#channel = 15

GPIO.setmode(GPIO.RAW)
GPIO.setup(GPIO.PI+17,GPIO.IN,GPIO.PUD_DOWN)
print " Now input is Low\n Our task is performed when it becomes High"

while True:
    if GPIO.input(GPIO.PI+17):
        print "Input was High,begin to perform"
	print "Count Down"
        for i in range(7,0,-1):
            print "%d" %i
            time.sleep(1)
        print "Performed!"
	exit()

GPIO.cleanup(GPIO.PI+17)