.gitignore

@@ -1,5 +1,3 @@
-.idea
-
 ### JetBrains template
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

Makefile

@@ -1,9 +0,0 @@
-GOK := gok -i display
-run:
-	${GOK} run
-update:
-	${GOK} update
-logs:
-	${GOK} logs -s display-epaper
-get:
-	${GOK} get --update_all

epd/epd.go

@@ -50,11 +50,11 @@ func New() (*EPD, error) {
 
 func (e *EPD) reset() {
 	e.resetPin.Out(gpio.High)
-	time.Sleep(20 * time.Millisecond)
+	time.Sleep(200 * time.Millisecond)
 	e.resetPin.Out(gpio.Low)
-	time.Sleep(2 * time.Millisecond)
+	time.Sleep(4 * time.Millisecond)
 	e.resetPin.Out(gpio.High)
-	time.Sleep(20 * time.Millisecond)
+	time.Sleep(200 * time.Millisecond)
 }
 
 func (e *EPD) sendCommand(cmd byte) {
@@ -96,8 +96,10 @@ func (e *EPD) sendDataSlice(data []byte) {
 			log.Fatalf("writing to spi: %v", err)
 		}
 		e.csPin.Out(gpio.High)
+		log.Printf("sent chunk %v\n", cursor)
 		cursor = min(cursor+maxSize, toSend)
 	}
+	log.Printf("sent chunk %v\n", cursor)
 }
 
 func (e *EPD) spiWrite(write []byte) ([]byte, error) {
@@ -112,11 +114,13 @@ func (e *EPD) spiWrite(write []byte) ([]byte, error) {
 
 func (e *EPD) readBusy() {
 	e.sendCommand(0x71)
-	for e.busyPin.Read() == gpio.Low {
-		time.Sleep(20 * time.Millisecond)
+	busy := e.busyPin.Read()
+	for busy == gpio.Low {
 		e.sendCommand(0x71)
+		busy = e.busyPin.Read()
+		time.Sleep(200 * time.Millisecond)
 	}
-	time.Sleep(20 * time.Millisecond)
+	time.Sleep(200 * time.Millisecond)
 }
 
 func (e *EPD) turnOn() error {
@@ -159,18 +163,18 @@ func (e *EPD) Init() error {
 
 	e.reset()
 
+	e.sendCommand(0x01)
+	e.sendDataSlice([]byte{0x07, 0x07, 0x3f, 0x3f})
+
 	e.sendCommand(0x06)
 	e.sendDataSlice([]byte{0x17, 0x17, 0x28, 0x17})
 
-	e.sendCommand(0x01)
-	e.sendDataSlice([]byte{0x07, 0x07, 0x28, 0x17})
-
 	e.sendCommand(0x04)
 	time.Sleep(100 * time.Millisecond)
 	e.readBusy()
 
 	e.sendCommand(0x00)
-	e.sendData(0x1f)
+	e.sendData(0x0f)
 
 	e.sendCommand(0x61)
 	e.sendDataSlice([]byte{0x03, 0x20, 0x01, 0xe0})
@@ -179,7 +183,7 @@ func (e *EPD) Init() error {
 	e.sendData(0x00)
 
 	e.sendCommand(0x50)
-	e.sendDataSlice([]byte{0x10, 0x07})
+	e.sendDataSlice([]byte{0x11, 0x07})
 
 	e.sendCommand(0x60)
 	e.sendData(0x22)
@@ -197,10 +201,7 @@ func (e *EPD) InitFast() error {
 	e.reset()
 
 	e.sendCommand(0x00)
-	e.sendData(0x1f)
-
-	e.sendCommand(0x50)
-	e.sendDataSlice([]byte{0x10, 0x07})
+	e.sendData(0x0f)
 
 	e.sendCommand(0x04)
 	time.Sleep(100 * time.Millisecond)
@@ -215,12 +216,15 @@ func (e *EPD) InitFast() error {
 	e.sendCommand(0xe5)
 	e.sendData(0x5a)
 
+	e.sendCommand(0x50)
+	e.sendDataSlice([]byte{0x11, 0x07})
+
 	return nil
 }
 
 func (e *EPD) Clear() {
 	log.Println("clearing epd")
-	e.Send(image.White)
+	e.Fill(White)
 }
 
 func (e *EPD) Refresh() {
@@ -259,15 +263,43 @@ func (e *EPD) turnOff() error {
 	return nil
 }
 
-func (e *EPD) Send(img image.Image) {
-	if img == nil {
-		log.Println("empty img")
-		return
-	}
+type Color int
 
+const (
+	White Color = iota
+	Red
+	Black
+)
+
+func (e *EPD) Fill(c Color) {
+	log.Println("filling...")
+
+	switch c {
+	case White:
+		e.Send(image.White, image.Black)
+	case Black:
+		e.Send(image.Black, image.Black)
+	case Red:
+		e.Send(image.White, image.White)
+	}
+}
+
+func (e *EPD) Send(black image.Image, red image.Image) {
+	if black != nil {
+		log.Println("sending black")
+		e.sendCommand(0x10) // write bw data
+		e.sendImg(black)
+	}
+	if red != nil {
+		log.Println("sending red")
+		e.sendCommand(0x13) // write red data
+		e.sendImg(red)
+	}
+}
+
+func (e *EPD) sendImg(img image.Image) {
 	log.Println("sending img...")
-	toSend := make([]byte, 0, e.height*e.width/8)
-	toSend2 := make([]byte, 0, e.height*e.width/8)
+	// TODO check img size
 	for row := 0; row < e.height; row++ {
 		for col := 0; col < e.width; col += 8 {
 			// this loop converts individual pixels into a single byte
@@ -279,16 +311,9 @@ func (e *EPD) Send(img image.Image) {
 					b &= ^(0x80 >> (px % 8))
 				}
 			}
-			toSend = append(toSend, ^b)
-			toSend2 = append(toSend2, b)
+			e.sendData(b)
 		}
 	}
-
-	e.sendCommand(0x10)
-	e.sendDataSlice(toSend2)
-
-	e.sendCommand(0x13)
-	e.sendDataSlice(toSend)
 }
 
 func isdark(r, g, b, _ uint32) bool {

img.go

@@ -17,7 +17,6 @@ import (
 	"math"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 )
 
@@ -36,83 +35,26 @@ func getBlack(
 	feteClient *fete.Client,
 	weatherClient *weather.Client,
 ) (*image.RGBA, error) {
-	var (
-		bus      *transports.Passages
-		tram     *transports.Passages
-		velovRoc *transports.Station
-		fetes    *fete.Fete
-		wthr     *weather.Prevision
-	)
-
-	wg := &sync.WaitGroup{}
-	wg.Add(5)
-
-	go func() {
-		defer wg.Done()
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-
-		var err error
-
-		bus, err = transportsClient.GetTCLPassages(ctx, 290)
+	bus, err := transportsClient.GetTCLPassages(ctx, 290)
 	if err != nil {
 		log.Println("error getting bus:", err)
 	}
-	}()
-	go func() {
-		defer wg.Done()
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-
-		var err error
-
-		tram, err = transportsClient.GetTCLPassages(ctx, 34068)
+	tram, err := transportsClient.GetTCLPassages(ctx, 34068)
 	if err != nil {
 		log.Println("error getting tram:", err)
 	}
-	}()
-	go func() {
-		defer wg.Done()
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-
-		var err error
-
-		velovRoc, err = transportsClient.GetVelovStation(ctx, 10044)
+	velovRoc, err := transportsClient.GetVelovStation(ctx, 10044)
 	if err != nil {
 		log.Println("error getting velov:", err)
 	}
-	}()
-	go func() {
-		defer wg.Done()
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-
-		var err error
-
-		fetes, err = feteClient.GetFete(ctx, nowFunc())
+	fetes, err := feteClient.GetFete(ctx, nowFunc())
 	if err != nil {
 		log.Println("error getting fetes:", err)
 	}
-	}()
-	go func() {
-		defer wg.Done()
-
-		ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
-		defer cancel()
-
-		var err error
-
-		wthr, err = weatherClient.GetWeather(ctx)
+	wthr, err := weatherClient.GetWeather(ctx)
 	if err != nil {
 		log.Println("error getting weather:", err)
 	}
-	}()
-
 	quote := quotes.GetQuote(nowFunc())
 
 	img := newWhite()
@@ -123,8 +65,6 @@ func getBlack(
 	gc.SetFillColor(color.RGBA{255, 255, 255, 255})
 	gc.SetStrokeColor(color.RGBA{0, 0, 0, 255})
 
-	wg.Wait()
-
 	drawTCL(gc, bus, 55)
 	drawTCL(gc, tram, 190)
 	drawVelov(gc, velovRoc, 350)

main.go

@@ -11,7 +11,6 @@ import (
 	"golang.org/x/image/font/gofont/goregular"
 	"log"
 	"os"
-	"time"
 )
 
 const fontName = "default"
@@ -41,16 +40,7 @@ func main() {
 		CacheLocation: os.Getenv("WEATHER_CACHE_LOCATION"),
 	})
 
-	const minSleep = 30 * time.Second
-
-	sleep, err := time.ParseDuration(os.Getenv("SLEEP_DURATION"))
-	if err != nil || sleep < minSleep {
-		sleep = minSleep
-	}
-
-	log.Printf("sleep duration: %v\n", sleep)
-
-	if err := run(ctx, sleep, transportsClient, feteClient, weatherClient); err != nil {
+	if err := run(ctx, transportsClient, feteClient, weatherClient); err != nil {
 		log.Fatal("error: ", err)
 	}
 

run_darwin_arm64.go

@@ -12,7 +12,6 @@ import (
 
 func run(
 	ctx context.Context,
-	_ time.Duration,
 	transportsClient *transports.Client,
 	feteClient *fete.Client,
 	weatherClient *weather.Client,

run_linux_arm64.go

@@ -8,18 +8,11 @@ import (
 	"github.com/Crocmagnon/display-epaper/transports"
 	"github.com/Crocmagnon/display-epaper/weather"
 	"log"
-	"os"
 	"periph.io/x/host/v3"
 	"time"
 )
 
-func run(
-	ctx context.Context,
-	sleep time.Duration,
-	transportsClient *transports.Client,
-	feteClient *fete.Client,
-	weatherClient *weather.Client,
-) error {
+func run(ctx context.Context, transportsClient *transports.Client, feteClient *fete.Client, weatherClient *weather.Client) error {
 	_, err := host.Init()
 	if err != nil {
 		return fmt.Errorf("initializing host: %w", err)
@@ -38,8 +31,6 @@ func run(
 		default:
 		}
 
-		log.Println("running loop")
-
 		err = loop(
 			ctx,
 			display,
@@ -51,8 +42,8 @@ func run(
 			log.Printf("error looping: %v\n", err)
 		}
 
-		log.Printf("time.Sleep(%v)\n", sleep)
-		time.Sleep(sleep)
+		log.Println("time.Sleep(10m)")
+		time.Sleep(10 * time.Minute)
 	}
 }
 
@@ -63,6 +54,19 @@ func loop(
 	feteClient *fete.Client,
 	weatherClient *weather.Client,
 ) error {
+	defer func() {
+		if err := display.Sleep(); err != nil {
+			log.Printf("error sleeping: %v\n", err)
+		}
+	}()
+
+	err := display.Init()
+	if err != nil {
+		return fmt.Errorf("initializing display: %w", err)
+	}
+
+	display.Clear()
+
 	black, err := getBlack(
 		ctx,
 		time.Now,
@@ -74,60 +78,8 @@ func loop(
 		return fmt.Errorf("getting black: %w", err)
 	}
 
-	defer func() {
-		if err := display.Sleep(); err != nil {
-			log.Printf("error sleeping: %v\n", err)
-		}
-	}()
-
-	err = initDisplay(display)
-	if err != nil {
-		return fmt.Errorf("initializing display: %w", err)
-	}
-
-	display.Clear()
-
-	display.Send(black)
+	display.Send(black, nil)
 	display.Refresh()
 
 	return nil
 }
-
-const filename = "/perm/display-epaper-lastFullRefresh"
-
-func initDisplay(display *epd.EPD) error {
-	if canInitFast() {
-		err := display.InitFast()
-		if err != nil {
-			return fmt.Errorf("running fast init: %w", err)
-		}
-		return nil
-	}
-
-	err := display.Init()
-	if err != nil {
-		return fmt.Errorf("running full init: %w", err)
-	}
-
-	markInitFull()
-
-	return nil
-}
-
-func canInitFast() bool {
-	stat, err := os.Stat(filename)
-	if err != nil {
-		return false
-	}
-
-	return stat.ModTime().Add(12 * time.Hour).After(time.Now())
-}
-
-func markInitFull() {
-	f, err := os.Create(filename)
-	if err != nil {
-		log.Printf("error marking full refresh: %v\n", err)
-	}
-
-	f.Close()
-}