rgb-led-board/main.go

package main

import (
	"flag"
	"fmt"
	_ "image/jpeg"
	"log"
	"os"
	"os/signal"
	"syscall"

	rgbmatrix "gitea.wagshome.duckdns.org/publicWagsHome/go-rpi-rgb-led-matrix"
	mqtt "github.com/eclipse/paho.mqtt.golang"
)

// flags from cmd line
var (
	rows                     = flag.Int("led-rows", 64, "number of rows supported")
	cols                     = flag.Int("led-cols", 64, "number of columns supported")
	parallel                 = flag.Int("led-parallel", 1, "number of daisy-chained panels")
	chain                    = flag.Int("led-chain", 2, "number of displays daisy-chained")
	brightness               = flag.Int("brightness", 100, "brightness (0-100)")
	hardware_mapping         = flag.String("led-gpio-mapping", "regular", "Name of GPIO mapping used.")
	show_refresh             = flag.Bool("led-show-refresh", false, "Show refresh rate.")
	inverse_colors           = flag.Bool("led-inverse", false, "Switch if your matrix has inverse colors on.")
	disable_hardware_pulsing = flag.Bool("led-no-hardware-pulse", false, "Don't use hardware pin-pulse generation.")
	led_slowdown_gpio        = flag.Int("led-slowdown-gpio", 1, "GPIO pin slowdown")
)

// runs before main, parses flags
func init() {
	flag.Parse()
}

// small function for handling fatal errors
func fatal(err error) {
	if err != nil {
		panic(err)
	}
}

func main() {
	config := &rgbmatrix.DefaultConfig
	config.Rows = *rows
	config.Cols = *cols
	config.Parallel = *parallel
	config.ChainLength = *chain
	config.Brightness = *brightness
	config.HardwareMapping = *hardware_mapping
	config.ShowRefreshRate = *show_refresh
	config.InverseColors = *inverse_colors
	config.DisableHardwarePulsing = *disable_hardware_pulsing
	var rt rgbmatrix.RunTimeConfig
	rt.Gpio_slowdown = *led_slowdown_gpio
	setupMQTT()

	m, err := rgbmatrix.NewRGBLedMatrix(config, &rt)
	fatal(err)
	mqMessages := make(chan mqtt.Message)
	log.Println("making listener")
	go listener(mqMessages)
	tk := rgbmatrix.NewToolKit(m)
	defer tk.Close()
	log.Println("making animator")
	go animator(tk, mqMessages)
	log.Println("I guess I'm at the end")
	sigs := make(chan os.Signal, 1)
	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
	done := make(chan bool, 1)
	go func() {
		sig := <-sigs
		fmt.Println()
		fmt.Println(sig)
		done <- true
	}()
	fmt.Println("awaiting signal")
	<-done
	fmt.Println("exiting")
}