From 2ed6ba8947d38fb743e53695314730dac8ec0683 Mon Sep 17 00:00:00 2001
From: NC Thompson <github@hoekwil.com>
Date: Wed, 13 Sep 2017 21:10:55 +0200
Subject: [PATCH] CLI as example for mk2 lib

---
 cmd/invertercli/invertercli.go | 85 ++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 cmd/invertercli/invertercli.go

diff --git a/cmd/invertercli/invertercli.go b/cmd/invertercli/invertercli.go
new file mode 100644
index 0000000..e5fc11b
--- /dev/null
+++ b/cmd/invertercli/invertercli.go
@@ -0,0 +1,85 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/hpdvanwyk/invertergui/mk2if"
+	"github.com/mikepb/go-serial"
+	"io"
+	"log"
+	"net"
+	"sync"
+	"time"
+)
+
+// Basic CLI to serve as example lib usage
+func main() {
+	//Info = log.New()
+	wg := sync.WaitGroup{}
+
+	tcp := flag.Bool("tcp", false, "Use TCP instead of TTY")
+	ip := flag.String("ip", "localhost:8139", "IP to connect when using tcp connection.")
+	dev := flag.String("dev", "/dev/ttyUSB0", "TTY device to use.")
+	flag.Parse()
+
+	var p io.ReadWriter
+	var err error
+	var tcpAddr *net.TCPAddr
+
+	if *tcp {
+		tcpAddr, err = net.ResolveTCPAddr("tcp", *ip)
+		if err != nil {
+			panic(err)
+		}
+		p, err = net.DialTCP("tcp", nil, tcpAddr)
+		bf := make([]byte, 256)
+		p.Read(bf)
+
+	} else {
+		options := serial.RawOptions
+		options.BitRate = 2400
+		options.Mode = serial.MODE_READ_WRITE
+		p, err = options.Open(*dev)
+		if err != nil {
+			panic(err)
+		}
+	}
+	mk2, err := mk2if.NewMk2Connection(p)
+	defer mk2.Close()
+	if err != nil {
+		panic(err)
+	}
+	wg.Add(1)
+	for {
+		tmp := mk2.GetMk2Info()
+		if tmp.Valid {
+			PrintInfo(tmp)
+		}
+		time.Sleep(2 * time.Second)
+	}
+	log.Printf("Closing connection")
+	wg.Wait()
+}
+
+func PrintInfo(info *mk2if.Mk2Info) {
+	out := fmt.Sprintf("Version: %v\n", info.Version)
+	out += fmt.Sprintf("Bat Volt: %.2fV Bat Cur: %.2fA \n", info.BatVoltage, info.BatCurrent)
+	out += fmt.Sprintf("In Volt: %.2fV In Cur: %.2fA In Freq %.1fHz\n", info.InVoltage, info.InCurrent, info.InFrequency)
+	out += fmt.Sprintf("Out Volt: %.2fV Out Cur: %.2fA Out Freq %.1fHz\n", info.OutVoltage, info.OutCurrent, info.OutFrequency)
+	out += fmt.Sprintf("In Power %.2fW Out Power %.2fW\n", info.InVoltage*info.InCurrent, info.OutVoltage*info.OutCurrent)
+	out += fmt.Sprintf("Charge State: %.2f%%\n", info.ChargeState*100)
+	out += "LEDs on:"
+	for _, v := range info.LedListOn {
+		out += " " + mk2if.LedNames[v]
+	}
+	out += "\nLEDs blink:"
+	for _, v := range info.LedListBlink {
+		out += " " + mk2if.LedNames[v]
+	}
+	out += "\nErrors:"
+	for _, v := range info.Errors {
+		out += " " + v.Error()
+	}
+	out += "\n"
+	log.Printf("System Info: \n%v", out)
+}