삼성 아틱 710S와 조도센서 파이썬 예제 2개

 from time import sleep

OUTPUT = 'out'

INPUT = 'in'

HIGH = 1

LOW = 0

def export(pin):

    try:

        exp = open('/sys/class/gpio/export','wb',0)

        exp.write(str(pin))

        print('Registion Successful: pin%d' %pin)

    except IOError as e:

        print('Error: %d - %s' %(e.errno,e.strerror))

def unexport(pin):

    try:

        uexp = open('/sys/class/gpio/unexport','wb',0)

        uexp.write(str(pin))

        print('Unregistion Successful: pin%d' %pin)

        uexp.close()

    except IOError as e:

        print('Error: %d - %s' %(e.errno,e.strerror))

def pinMode(pin, mode):

    try:

        direction = open('/sys/class/gpio/gpio%d/direction' %pin,'wb',0)

        direction.write('out' if mode == OUTPUT else 'in')

        direction.close()

    except IOError as e:

        print('Error: %d - %s' %(e.errno,e.strerror))

def digitalWrite(pin,value):

    try:

        val = open('/sys/class/gpio/gpio%d/value' %pin,'wb',0)

        val.write(str(value))

        val.close()

    except IOError as e:

        print('Error: %d - %s' %(e.errno,e.strerror))

def analogRead(pin):

    filePath = '/sys/devices/platform/c0000000.soc/c0053000.adc/iio:device0/in_voltage%d_raw' %pin

    try:

        file = open(filePath,"rb",0)

        value = file.read()

        file.close()

        return int(value)

    except IOError as e:

        print('Error: %d - %s' %(e.errno, e.strerror))

        return 0

LEDpin = 128

LightSensor = 0

export(LEDpin)

pinMode(LEDpin,OUTPUT)

try:

while True:

raw = analogRead(LightSensor)

volt = raw * 1.8/4095

print("Raw value: %d" %raw)

print("Voltage: %0.2f" %volt)

if raw <= 1024:

digitalWrite(LEDpin, HIGH)

else:

digitalWrite(LEDpin, LOW)

sleep(0.5)

except KeyboardInterrupt:

unexport(LEDpin)

print("Stop!!!")