WiringPi-Python

This documentation will introduce how to use WiringPi Python API.

What is WiringPi-Python

WiringPi Python is a PIN based GPIO access library written in Python for the Raspberry Pi. Now we also migrate it to VIMs.

WiringPi-Python Function List

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//GPIO
class GPIO(object):
  def __init__(self,pinmode=0):
    self.MODE=pinmode
    if pinmode==self.WPI_MODE_PINS:
      wiringPiSetup()
    if pinmode==self.WPI_MODE_GPIO:
      wiringPiSetupGpio()
    if pinmode==self.WPI_MODE_GPIO_SYS:
      wiringPiSetupSys()
    if pinmode==self.WPI_MODE_PHYS:
      wiringPiSetupPhys()
	if pinmode==self.WPI_MODE_PIFACE:
      wiringPiSetupPiFace()

  def delay(self,*args):
    delay(*args)
  def delayMicroseconds(self,*args):
    delayMicroseconds(*args)

  def piBoardRev(self):
    return piBoardRev()
  def wpiPinToGpio(self,*args):
    return wpiPinToGpio(*args)
  def setPadDrive(self,*args):
    return setPadDrive(*args)
  def getAlt(self,*args):
    return getAlt(*args)
  def digitalWriteByte(self,*args):
    return digitalWriteByte(*args)

  def pinMode(self,*args):
    pinMode(*args)

  def digitalWrite(self,*args):
    digitalWrite(*args)
  def digitalRead(self,*args):
    return digitalRead(*args)

  def analogWrite(self,*args):
    analogWrite(*args)
  def analogRead(self,*args):
    return analogRead(*args)

  def pullUpDnControl(self,*args):
    return pullUpDnControl(*args)

  def softPwmCreate(self,*args):
    return softPwmCreate(*args)
  def softPwmWrite(self,*args):
    return softPwmWrite(*args)

//I2C:
class I2C(object):
  def setupInterface(self,*args):
  	return wiringPiI2CSetupInterface(*args)
  def setup(self,*args):
    return wiringPiI2CSetup(*args)
  def read(self,*args):
    return wiringPiI2CRead(*args)
  def readReg8(self,*args):
    return wiringPiI2CReadReg8(*args)
  def readReg16(self,*args):
    return wiringPiI2CReadReg16(*args)
  def write(self,*args):
    return wiringPiI2CWrite(*args)
  def writeReg8(self,*args):
    return wiringPiI2CWriteReg8(*args)
  def writeReg16(self,*args):
    return wiringPiI2CWriteReg16(*args)

//Serial:
class Serial(object):
  device = '/dev/ttyAMA0'
  baud = 9600
  serial_id = 0
  def printf(self,*args):
    return serialPrintf(self.serial_id,*args)
  def dataAvail(self,*args):
    return serialDataAvail(self.serial_id,*args)
  def getchar(self,*args):
    return serialGetchar(self.serial_id,*args)
  def putchar(self,*args):
    return serialPutchar(self.serial_id,*args)
  def puts(self,*args):
    return serialPuts(self.serial_id,*args)
  def __init__(self,device,baud):
    self.device = device
    self.baud = baud
    self.serial_id = serialOpen(self.device,self.baud)
  def __del__(self):
    serialClose(self.serial_id)

WiringPi-Python Demo

This is a simple program that demonstrates reading and writing to GPIO pins.

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$ wget https://dl.khadas.com/development/code/docs_source/wiringpi-python.py

Notes

  • If you need to use the special pin functions of WiringPi-Python, you’ll need to confirm that the corresponding configuration is enabled in the dts file.
  • WiringPi-Python itself includes many functions, not limited to controlling the output of GPIO pins and reading pin levels. This is only a simple introduction, and you can explore more by yourself.