fix:读取串口数据

entry/src/main/ets/common/service/indexService.ts

@@ -3,9 +3,7 @@ import promptAction from '@ohos.promptAction'
 import router from '@ohos.router'
 import { dateFormat } from '../utils/tools'
 import FileUtil from '../../common/utils/File'
-import AccountTable from '../../common/database/tables/AccountTable'
-import MA_SYSSET from '../../common/constants/MA_SYSSET'
-import { takePhoto,deleteAllFileByPiC } from '../../common/service/videoService'
+import { deleteAllFileByPiC, takePhoto } from '../../common/service/videoService'
 
 import {
   delSyncTable,
@@ -16,7 +14,8 @@ import {
 } from '../../common/service/initable'
 import { GlobalConfig } from '../../config/index'
 import testNapi from '@ohos.hiserialsdk'
-import fs from '@ohos.file.fs';
+import fs from '@ohos.file.fs'
+
 let num = 0
 
 export async function getliushuiNum(context) {
@@ -41,6 +40,7 @@ export async function getliushuiNum(context) {
     // return str
   }
 }
+
 export async function deleteAllFIleLog(path) {
   let options = {
     "recursion": false,
@@ -65,6 +65,7 @@ export async function deleteAllFIleLog(path){
   }
 
 }
+
 export async function delHilog() {
   console.log('kkkkmmm1')
 
@@ -87,6 +88,7 @@ export async function delHilog(){
     }
   }
 }
+
 function isSevenDaysAgo(date) {
   const today = new Date(); // 当前日期
   const target = new Date(date); // 需要判断的日期
@@ -97,6 +99,7 @@ function isSevenDaysAgo(date) {
   // 如果差异天数正好是7，则原日期是当前日期的前七天
   return diffDays > 7;
 }
+
 //配置流水号
 export async function setliushuiNum(context) {
   const fileUtil = new FileUtil(context)
@@ -323,7 +326,8 @@ export async function takePhotoFn(context) {
 }
 
 let fd
-const devPath = "/dev/ttyS3"
+// 5 7
+const devPath = "/dev/ttyS5"
 
 function openChuankouFn(callback) {
   console.log('SerialOpen in indexservice, path=' + devPath)
@@ -338,6 +342,15 @@ function openChuankouFn(callback) {
   });
 }
 
+function arrayToBuffer(arr: number[]): ArrayBuffer {
+  const buffer = new ArrayBuffer(arr.length);
+  const view = new DataView(buffer);
+  arr.forEach((value, index) => {
+    view.setUint8(index, value);
+  });
+  return buffer;
+}
+
 function getChuankouFnMsg() {
   let timeout = 50000; // 2秒超时
   let databuff = [0x61, 0xAA, 0x0A, 0X15, 0X00]; // send ABCDE
@@ -349,6 +362,20 @@ function getChuankouFnMsg() {
     testNapi.SerialRecvAsync(globalThis.fd, timeout, (revTestInfo) => {
       console.log('zzc 4 received msg')
       console.log('revTestInfo', revTestInfo.recevedBuf.length)
+      // TODO: 读取串口数据
+      // if (revTestInfo.recevedLen > 0) {
+      //   const buffer = this.arrayToBuffer(revTestInfo.recevedBuf);
+      //   console.log(buffer.toString(), 'wzj4')
+      //   let dataView = new DataView(buffer)
+      //   let str = ""
+      //   for (let i = 0; i < dataView?.byteLength; ++i) {
+      //     let c = String.fromCharCode(dataView?.getUint8(i))
+      //     if (c !== "\n") {
+      //       str += c
+      //     }
+      //   }
+      //   console.log(str, 'wzj4')
+      // }
 
       const message = revTestInfo?.recevedBuf?.toString()
       console.log('chuankou', message)