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Fix serial read loop and frontend event payload handling #1

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Fix serial read loop and frontend event payload handling #1

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21 changes: 15 additions & 6 deletions app.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,11 @@ func (a *App) Greet(name string) string {
}

func (a *App) GetSerialNames() []string {
ports, _ := serial.GetPortsList()
ports, err := serial.GetPortsList()
if err != nil {
a.sendTowebStr("ERROR listing ports: " + err.Error() + "\n")
return []string{}
}

return ports
}
Expand All @@ -40,25 +44,28 @@ func (a *App) PortOpen(serialName string, baudRate int, length int) {
a.PortClose()
mode := &serial.Mode{
BaudRate: baudRate,
DataBits: 8,
Parity: serial.NoParity,
StopBits: serial.OneStopBit,
}
port, err := serial.Open(serialName, mode)
if err != nil {
runtime.EventsEmit(a.ctx, "printToweb", "ERROR : "+err.Error())
a.sendTowebStr("ERROR opening " + serialName + ": " + err.Error() + "\n")
return
}

a.port = port
a.sendTowebStr(fmt.Sprintf("Connected to %s @ %d baud\n", serialName, baudRate))
buff := make([]byte, length)
go func() { // Goroutine untuk membaca port
for {
n, err := port.Read(buff)
if err != nil {
a.sendTowebStr((err.Error()))
a.sendTowebStr("ERROR reading " + serialName + ": " + err.Error() + "\n")
break
}
if n == 0 {
fmt.Println("\nEOF")
break
continue
}

a.sendToweb(buff[:n])
Expand All @@ -79,7 +86,9 @@ func (a *App) PortClose() {
return
}

a.port.Close()
if err := a.port.Close(); err != nil {
a.sendTowebStr("ERROR closing port: " + err.Error() + "\n")
}
a.port = nil
}
func (a *App) sendToweb(buff []byte) {
Expand Down
36 changes: 25 additions & 11 deletions frontend/src/AppMain.vue
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Original file line number Diff line number Diff line change
@@ -1,19 +1,19 @@
<script lang="ts" setup>
import { defineComponent, onMounted, onUnmounted, ref, watch } from 'vue';
import { onMounted, onUnmounted, ref } from 'vue';
import { GetSerialNames, IsConnected, PortClose, PortOpen } from '../wailsjs/go/main/App';
import HelloWorld from './components/HelloWorld.vue'

export type PropType = {
openAbout :()=>void
}
const prop = defineProps<PropType>();

const listName = ref<string[]>();
const baudRate = ref<string>();
const listName = ref<string[]>([]);
const baudRate = ref<string>("9600");
const selectedName = ref<string>();
const isPortsConnected = ref<boolean>(false);

const textTerminal = ref<string>("");
let stopPrintTowebListener: (() => void) | null = null;

function sleep(n:number){
return new Promise((r,x)=>{
Expand All @@ -35,10 +35,20 @@ onMounted(() => {
PortClose();
getSerialList();

(window as any).runtime.EventsOn("printToweb", (data:number[])=>{
var textDecoder = new TextDecoder("utf-8");
var str = textDecoder.decode(new Uint8Array(data));
textTerminal.value += str;
stopPrintTowebListener = (window as any).runtime.EventsOn("printToweb", (data:number[] | string)=>{
if (Array.isArray(data)) {
var textDecoder = new TextDecoder("utf-8");
var str = textDecoder.decode(new Uint8Array(data));
textTerminal.value += str;
return;
}

if (typeof data === "string") {
textTerminal.value += data;
return;
}

textTerminal.value += String(data);
});


Expand Down Expand Up @@ -71,6 +81,10 @@ function startConnect(){

onUnmounted(()=>{
PortClose();
if (stopPrintTowebListener) {
stopPrintTowebListener();
stopPrintTowebListener = null;
}
isStillOpen = false;
})

Expand All @@ -92,7 +106,7 @@ onUnmounted(()=>{
<td>

<select v-model="selectedName">
<option v-for="item in listName">{{ item }}</option>
<option v-for="item in listName" :key="item" :value="item">{{ item }}</option>
</select>
</td>
</tr>
Expand All @@ -110,8 +124,8 @@ onUnmounted(()=>{
<td></td>
<td></td>
<td>
<button v-if="!isPortsConnected" :onclick="startConnect">Start Connect</button>
<button class="btnred" v-if="isPortsConnected" :onclick="()=>{ PortClose(); }">Disconnect</button>
<button v-if="!isPortsConnected" @click="startConnect">Start Connect</button>
<button class="btnred" v-if="isPortsConnected" @click="()=>{ PortClose(); }">Disconnect</button>
</td>
</tr>

Expand Down