From 863f81e4343452c1b11e33d778585eed94079895 Mon Sep 17 00:00:00 2001
From: Joerg Lehmann <joerg.lehmann@nbit.ch>
Date: Sat, 9 Nov 2019 20:59:44 +0100
Subject: [PATCH] add mini-beieli-provison.go

---
 .gitignore               |  1 +
 mini-beieli-provision.go | 76 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 mini-beieli-provision.go

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ce81a98
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+mini-beieli-provision
diff --git a/mini-beieli-provision.go b/mini-beieli-provision.go
new file mode 100644
index 0000000..1bb990f
--- /dev/null
+++ b/mini-beieli-provision.go
@@ -0,0 +1,76 @@
+package main
+
+import (
+	"fmt"
+	"github.com/tarm/serial"
+	"log"
+	"math/rand"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func RandomEUI64() string {
+	var letter = []rune("ABCDEF0123456789")
+
+	b := make([]rune, 16+7)
+	for i := range b {
+		if (i+1)%3 == 0 {
+			b[i] = '-'
+		} else {
+			b[i] = letter[rand.Intn(len(letter))]
+		}
+	}
+	return string(b)
+}
+
+func sendCommand(p *serial.Port, command string, waitForOk bool) string {
+	fmt.Print(command)
+	var status string = ""
+	p.Flush()
+	_, err := p.Write([]byte(command))
+	if err != nil {
+		log.Fatal(err)
+	}
+	buf := make([]byte, 32)
+	var loop int = 1
+	if waitForOk {
+		loop = 10
+	}
+	for i := 0; i < loop; i++ {
+		// ignoring error as EOF raises error on Linux
+		n, _ := p.Read(buf)
+		if n > 0 {
+			status = string(buf[:n])
+			fmt.Print(status)
+			if strings.Contains(status, "OK") || strings.Contains(status, "?") {
+				break
+			}
+		}
+	}
+	return status
+}
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Println("usage: " + filepath.Base(os.Args[0]) + " <DevEUI>")
+		os.Exit(1)
+	}
+
+	deveui := os.Args[1]
+
+	c := &serial.Config{Name: "/dev/ttyUSB1", Baud: 115200, ReadTimeout: time.Second * 1}
+	s, err := serial.OpenPort(c)
+	if err != nil {
+		log.Fatal("Problem mit Serial Interface")
+	}
+
+	sendCommand(s, "system configure syseui "+RandomEUI64()+"\n", true)
+	sendCommand(s, "system configure platformguid 53ca094b-b888-465e-aa0e-e3064ec56d21\n", true)
+	sendCommand(s, "system configure operatingflags 0\n", true)
+	sendCommand(s, "lorawan configure deveui "+deveui+"\n", true)
+	sendCommand(s, "lorawan configure appeui "+deveui+"\n", true)
+	sendCommand(s, "lorawan configure appkey "+deveui+"-"+deveui+"\n", true)
+	sendCommand(s, "lorawan configure join 1\n", true)
+}