expo-ble模块测试demo 联调BLE模块 take 4 添加MTU设置和log

README.md

@@ -2,10 +2,26 @@
 
 安装 bun https://bun.com/docs/installation#windows
 
-```bash
+```powershell
 powershell -c "irm bun.sh/install.ps1|iex"
 ```
 
+检查bun是否正确安装
+
+```powershell
+& "$env:USERPROFILE\.bun\bin\bun" --version
+```
+
+添加bun到系统路径
+
+```powershell
+[System.Environment]::SetEnvironmentVariable(
+  "Path",
+  [System.Environment]::GetEnvironmentVariable("Path", "User") + ";$env:USERPROFILE\.bun\bin",
+  [System.EnvironmentVariableTarget]::User
+)
+```
+
 安装项目依赖
 
 ```bash

ble/core/BleClient.ts

@@ -1,6 +1,7 @@
 import {BleManager, Device, Characteristic, BleError as PlxError, ScanOptions} from 'react-native-ble-plx';
 import {Platform, PermissionsAndroid} from 'react-native';
 import {BleDevice, ConnectionState, BleError, ScanResult} from './types';
+import {BLE_UUIDS} from "@/ble";
 
 export class BleClient {
     private static instance: BleClient;
@@ -90,7 +91,8 @@ export class BleClient {
         if (!this.manager) throw new Error('BLE not supported on web');
         try {
             this.emit('connectionStateChange', {deviceId, state: ConnectionState.CONNECTING});
-            const device = await this.manager.connectToDevice(deviceId);
+            const device = await this.manager.connectToDevice(deviceId, {requestMTU: BLE_UUIDS.REQUEST_MTU});
+            console.log("Connected to device with MTU = ", device.mtu);
             this.connectedDevice = await device.discoverAllServicesAndCharacteristics();
             this.emit('connectionStateChange', {deviceId, state: ConnectionState.CONNECTED});
 

ble/protocol/Constants.ts

@@ -6,6 +6,7 @@ export const BLE_UUIDS = {
     BROADCAST_CHARACTERISTIC: "000002c1-0000-1000-8000-00805f9b34fb",
     WRITE_CHARACTERISTIC: '000002c5-0000-1000-8000-00805f9b34fb',
     READ_CHARACTERISTIC: '000002c6-0000-1000-8000-00805f9b34fb',
+    REQUEST_MTU: 517,
 } as const;
 
 export const FRAME_CONSTANTS = {