def test_loopback(self):
"""Test output loops back to another input"""
GPIO.setup(LOOP_IN, GPIO.IN, pull_up_down=GPIO.PUD_OFF)
GPIO.setup(LOOP_OUT, GPIO.OUT, initial=GPIO.LOW)
self.assertEqual(GPIO.input(LOOP_IN), GPIO.LOW)
GPIO.output(LOOP_OUT, GPIO.HIGH)
self.assertEqual(GPIO.input(LOOP_IN), GPIO.HIGH)
GPIO.cleanup()
def test_outputread(self):
"""Test that an output() can be input()"""
GPIO.setup(LED_PIN, GPIO.OUT)
GPIO.output(LED_PIN, GPIO.HIGH)
self.assertEqual(GPIO.input(LED_PIN), GPIO.HIGH)
GPIO.output(LED_PIN, GPIO.LOW)
self.assertEqual(GPIO.input(LED_PIN), GPIO.LOW)
GPIO.cleanup()
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()
#!/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()
import RaPi.GPIO as GPIO
import time
channel = 7
GPIO.setmode(GPIO.BOARD)
GPIO.setup(channel, GPIO.IN, GPIO.PUD_DOWN)
print " Now input is Low\n Our task is performed when it becomes High"
while True:
if GPIO.input(channel):
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()
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)
def makehigh(): print "\n value_%d = %d\n" %(channel,GPIO.input(channel)) GPIO.output(PIN_NUM,False) print "\n value_%d = %d\n" %(PIN_NUM,GPIO.input(PIN_NUM))
#!/usr/bin/env python import RaPi.GPIO as GPIO import time from threading import Timer PIN_NUM = 12 channel = 7 GPIO.setmode(GPIO.BOARD) GPIO.setup(PIN_NUM,GPIO.OUT) GPIO.output(PIN_NUM,True) print "\n value_%d = %d\n" %(PIN_NUM,GPIO.input(PIN_NUM)) GPIO.setup(channel,GPIO.IN,GPIO.PUD_DOWN) print "\n value_%d = %d\n" %(channel,GPIO.input(channel)) def makehigh(): print "\n value_%d = %d\n" %(channel,GPIO.input(channel)) GPIO.output(PIN_NUM,False) print "\n value_%d = %d\n" %(PIN_NUM,GPIO.input(PIN_NUM)) GPIO.wait_for_edge(channel, GPIO.RISING) t = Timer(1,makehigh) t.start()
#!/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)
def my_callback(channel): print "Callback trigger %d" %channel print "Now value of the Pin is %d" %(GPIO.input(GPIO.PI+10)) print "Click Ctr + C to exit"
import RaPi.GPIO as GPIO
import time
#PIN_NUM = 24
#GPIO.setmode(GPIO.BOARD)
#GPIO.setup(PIN_NUM,GPIO.IN,GPIO.PUD_DOWN)
GPIO.setmode(GPIO.RAW)
GPIO.setup(GPIO.PI+10,GPIO.IN,GPIO.PUD_DOWN)
print "The value of Pin %d is %d" %(GPIO.PI+10,GPIO.input(GPIO.PI+10))
def my_callback(channel):
print "Callback trigger %d" %channel
print "Now value of the Pin is %d" %(GPIO.input(GPIO.PI+10))
print "Click Ctr + C to exit"
GPIO.add_event_detect(GPIO.PI+10,GPIO.RISING,callback = my_callback,bouncetime = 300)
try:
while True:
time.sleep(0.1)
except KeyboardInterrupt:
pass
GPIO.cleanup()
#!/usr/bin/env python import RaPi.GPIO as GPIO import time PIN_0 = 3 PIN_1 = 5 #GPIO.setmode(GPIO.BCM) GPIO.setmode(GPIO.BOARD) GPIO.setup(PIN_0,GPIO.OUT) GPIO.setup(PIN_1,GPIO.IN) while True: GPIO.output(PIN_0,True) print "\n value = %d\n" %(GPIO.input(PIN_1)) time.sleep(1) GPIO.output(PIN_0,False) print "\n value = %d\n" %(GPIO.input(PIN_1)) time.sleep(1) GPIO.cleanup()
