Control H801 Wifi RGB LED Controller from Go

rgbled-go.go

package main

import (
	"fmt"
	. "github.com/hugozhu/rpi"
	"net"
	"time"
)

func CheckError(err error) {
	if err != nil {
		fmt.Println("Error: ", err)
	}
}

func main() {
	var state = "low"
	buf := []byte{0xfb, 0xeb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x9f, 0x97, 0x9d, 0x00}

	WiringPiSetup()
	PinMode(PIN_GPIO_7, INPUT)

	ServerAddr, err := net.ResolveUDPAddr("udp", "192.168.0.128:30977")
	CheckError(err)

	Conn, err := net.DialUDP("udp", nil, ServerAddr)
	CheckError(err)

	defer Conn.Close()

	_, err = Conn.Write(buf)
	if err != nil {
		fmt.Println(err)
	}

	i := 0
	for {
		pin := DigitalRead(PIN_GPIO_7)
		fmt.Println("GPIO7: ", pin)
		i++
		if pin == 1 {
			if state == "low" {
				buf = []byte{0xfb, 0xeb, 0xff, 0x00, 0x00, 0x00, 0x00, 0x9f, 0x97, 0x9d, 0x00}
				state = "high"
				_, err := Conn.Write(buf)
				if err != nil {
					fmt.Println(err)
				}
				fmt.Println("msg sent high", i)
			}
		} else {
			if state == "high" {
				buf = []byte{0xfb, 0xeb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x9f, 0x97, 0x9d, 0x00}
				state = "low"
				_, err := Conn.Write(buf)
				if err != nil {
					fmt.Println(err)
				}
				fmt.Println("msg sent low", i)
			}
		}
		time.Sleep(time.Second * 1)
	}
}