new provision program

.gitignore

@@ -0,0 +1 @@
+mini-beieli-provision-cubecell

mini-beieli-provision-cubecell.go

@@ -0,0 +1,87 @@
+package main
+
+import (
+	"fmt"
+	"github.com/tarm/serial"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// returns last line of output
+func sendCommand(p *serial.Port, command string) string {
+	fmt.Printf("%s\n", command)
+	var last_line string = ""
+	p.Flush()
+	_, err := p.Write([]byte(command))
+	if err != nil {
+		log.Fatal(err)
+	}
+	buf := make([]byte, 1024)
+
+	time.Sleep(500 * time.Millisecond)
+
+	n, _ := p.Read(buf)
+	if n > 0 {
+		last_line_arr := strings.Split(string(buf[:n]), "\n")
+		//fmt.Printf("AAA: %+q\n", last_line_arr)
+		last_line = last_line_arr[len(last_line_arr)-2]
+
+		fmt.Print(string(buf[:n]))
+	}
+	return last_line
+}
+
+func getDevEui(p *serial.Port) string {
+	var reply = sendCommand(p, "AT+ChipID=?")
+	//fmt.Printf("XXX%sYYY\n",reply)
+	if len(reply) >= 20 {
+		return "0000" + reply[8:20]
+	} else {
+		return ""
+	}
+}
+
+func readSerial(p *serial.Port) {
+	p.Flush()
+	buf := make([]byte, 32)
+
+	time.Sleep(200 * time.Millisecond)
+	n, _ := p.Read(buf)
+	for n > 0 {
+		// ignoring error as EOF raises error on Linux
+		reply := string(buf[:n])
+		fmt.Print(reply)
+		n, _ = p.Read(buf)
+	}
+}
+
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Println("usage: " + filepath.Base(os.Args[0]) + " <SerialDevice> <appEui>")
+		os.Exit(1)
+	}
+
+	serialdev := os.Args[1]
+	appEui := os.Args[2]
+
+	c := &serial.Config{Name: serialdev, Baud: 115200, ReadTimeout: time.Second * 1}
+	s, err := serial.OpenPort(c)
+	if err != nil {
+		log.Fatal("Problem mit Serial Interface")
+	}
+
+	sendCommand(s, "AT+XXX")
+	devEui := getDevEui(s)
+	if devEui != "" {
+		sendCommand(s, "AT+DevEui="+devEui)
+		sendCommand(s, "AT+AppEui="+appEui)
+		sendCommand(s, "AT+AppKey="+devEui+devEui)
+		sendCommand(s, "AT+RESET=1")
+		readSerial(s)
+	} else {
+		log.Fatal("Could not get devEui (that is: ChipID)")
+	}
+}