sim-modem/api/modem/gpio.go

package modem

import (
	"log"
	"time"

	gpio "github.com/stianeikeland/go-rpio/v4"
)

type gpioPin struct {
	logger *log.Logger
	Pin    gpio.Pin
}

func (p gpioPin) Init() error {
	return gpio.Open()
}

func (p gpioPin) sendOnOffSignal() {
	p.Pin.Output()
	p.logger.Println("Power on 0/3 + 100ms")
	p.Pin.Low()
	p.Pin.Toggle()
	time.Sleep(100 * time.Millisecond)

	p.logger.Println("Power on 1/3 + 3s")
	p.Pin.High()
	p.Pin.Toggle()
	time.Sleep(3 * time.Second)

	p.logger.Println("Power on 2/3 + 30s")
	p.Pin.Low()
	p.Pin.Toggle()
	time.Sleep(30 * time.Second)

	p.logger.Println("Power on 3/3")
}

func (p gpioPin) PowerOn() {
	p.sendOnOffSignal()
}

func (p *gpioPin) PowerOff() {
	p.sendOnOffSignal()
}

func (p *gpioPin) Close() error {
	return gpio.Close()
}