OneWire bus impl

samples/onewire.go

@@ -0,0 +1,72 @@
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/zlowred/embd"
+	_ "github.com/zlowred/embd/host/all"
+)
+
+func main() {
+	if err := embd.InitW1(); err != nil {
+		panic(err)
+	}
+	defer embd.CloseW1()
+
+	w1 := embd.NewW1Bus(0)
+
+	devs, err := w1.ListDevices()
+
+	if err != nil {
+		panic(err)
+	}
+
+	for _, dev := range devs {
+		fmt.Println("OneWire device: %s", dev)
+	}
+
+	w1d, err := w1.Open("28-011572120bff")
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%v\n", w1d)
+
+	err = w1d.WriteByte(0x44)
+
+	if err != nil {
+		panic(err)
+	}
+
+	for ret, err := w1d.ReadByte(); ret == 0 && err != nil; {}
+
+	if err != nil {
+		panic(err)
+	}
+
+	err = w1d.WriteByte(0xBE)
+
+	if err != nil {
+		panic(err)
+	}
+
+	res, err := w1d.ReadBytes(9)
+
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Print("res: ")
+	for _, val := range res {
+		fmt.Printf("0x%02X ", val)
+	}
+	fmt.Println()
+
+	var temp float64 = float64(float64(res[1]) * 256. + float64(res[0])) / 16.
+	fmt.Printf("%f\n", temp)
+
+	fmt.Println("Done")
+}