wiringpifuncs.go

package gopio

/*
#cgo LDFLAGS: -lwiringPi
#include <wiringPi.h>
#include "local_lib.h"
*/
import "C"

// initial function for wiringpi(call this function if you're going to use wiringpi)
func GopioSetUp() {
	C.wiringPiSetupPhys()
}

// define a wiringpi pin using this function
// pnum : physical pin number, d direction
func PinMode(pnum int, d DIR) WiringPiPin {
	if d == OUT {
		C.pinMode(C.int(pnum), C.OUTPUT)
	} else {
		C.pinMode(C.int(pnum), C.INPUT)
	}
	return WiringPiPin{Num: pnum, Dir: d}
}

// digital write accept two values HIGH and LOW
func (p *WiringPiPin) DigitalWrite(v VALUE) {
	if v == HIGH {
		C.digitalWrite(C.int(p.Num), C.HIGH)
	} else {
		C.digitalWrite(C.int(p.Num), C.LOW)
	}
}

// digitalread function returns the current value for a specific pin
func (p *WiringPiPin) DigitalRead() VALUE {
	v := int(C.digitalRead(C.int(p.Num)))
	if v == 1 {
		return HIGH
	} else {
		return LOW
	}
}

// this function takes a value(HIGH, LOW) and writes it to the pin on program interruption
func (p *WiringPiPin) WriteOnInterrupt(v VALUE) {
	var val int
	if v == HIGH {
		val = 1
	} else {
		val = 0
	}
	C.close_pin(C.int(p.Num), C.int(val))
}

// returns the analog value for pin(not tested)
func (p *WiringPiPin) AnalogRead() int {
	return int(C.analogRead(C.int(p.Num)))
}

// writes analog value to pin(not tested)
func (p *WiringPiPin) AnalogWrite(val int) {
	C.analogWrite(C.int(p.Num), C.int(val))
}