Make code look more like go

wiegand.go

@@ -0,0 +1,105 @@
+package main
+
+import (
+	"fmt"
+	"github.com/warthog618/gpiod"
+	"time"
+)
+
+type Wiegand struct {
+	aLine           *gpiod.Line
+	bLine           *gpiod.Line
+	bits            [64]bool
+	bitNr           int
+	bitTimeout      time.Duration
+	bitTimeoutTimer *time.Timer
+
+	solenoidLine *gpiod.Line
+}
+
+func openDoor(l *gpiod.Line) {
+	fmt.Println("Open")
+	l.SetValue(1)
+	d, _ := time.ParseDuration("500ms")
+	time.Sleep(d)
+	l.SetValue(0)
+	fmt.Println("Close")
+}
+
+func printCardId(card uint64) {
+	for i := 0; i < 7; i++ {
+		fmt.Printf("%02x", (card>>(8*i))&0xff)
+	}
+	fmt.Printf("\n")
+}
+
+func (w *Wiegand) cardRunner() {
+	for {
+		// Wait for bit timeout
+		fmt.Printf("Waiting for bit timeout\n")
+		<-w.bitTimeoutTimer.C
+		fmt.Printf("\n")
+
+		if w.bitNr != 64 {
+			fmt.Printf("We got less than 64 bits: %d\n", w.bitNr)
+		}
+
+		var card uint64 = 0
+		for i := 63; i != 0; i-- {
+			if w.bits[i] == true {
+				card |= 1 << (63 - i)
+			}
+		}
+
+		printCardId(card)
+
+		w.bitNr = 0
+	}
+}
+
+func (w *Wiegand) wiegandAEvent(evt gpiod.LineEvent) {
+	w.bitTimeoutTimer.Reset(w.bitTimeout)
+	w.bits[w.bitNr] = false
+	fmt.Printf("0")
+	w.bitNr += 1
+}
+
+func (w *Wiegand) wiegandBEvent(evt gpiod.LineEvent) {
+	w.bitTimeoutTimer.Reset(w.bitTimeout)
+	w.bits[w.bitNr] = true
+	fmt.Printf("1")
+	w.bitNr += 1
+}
+
+func WiegandSetup(a int, b int, bitTimeout time.Duration, solenoid int) *Wiegand {
+
+	var wiegand Wiegand
+	wiegand.bitTimeout = bitTimeout
+
+	wiegand.bitTimeoutTimer = time.NewTimer(wiegand.bitTimeout)
+	if !wiegand.bitTimeoutTimer.Stop() {
+		<-wiegand.bitTimeoutTimer.C
+	}
+
+	wa, err := gpiod.RequestLine("gpiochip0", a, gpiod.AsInput,
+		gpiod.WithFallingEdge, gpiod.WithEventHandler(wiegand.wiegandAEvent))
+	if err != nil {
+		panic(err)
+	}
+	wiegand.aLine = wa
+
+	wb, err := gpiod.RequestLine("gpiochip0", b, gpiod.AsInput,
+		gpiod.WithFallingEdge, gpiod.WithEventHandler(wiegand.wiegandBEvent))
+	if err != nil {
+		panic(err)
+	}
+	wiegand.bLine = wb
+
+	solenoid_line, err := gpiod.RequestLine("gpiochip0", solenoid, gpiod.AsOutput(0))
+	if err != nil {
+		panic(err)
+	}
+	wiegand.solenoidLine = solenoid_line
+
+	return &wiegand
+}