ArduinoIDE使用 ESP32 BLE 鼠标库出现错误

Question

使用ESP32_BLE_MOUSE的库却出现了一堆错误，代码没有问题，错误提示却说ESP32_BLE_MOUSE的库：
c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp: In static member function 'static void BleMouse::taskServer(void*)':
c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp:143:37: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
143 | BLEDevice::init(bleMouseInstance->deviceName);
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}

---

这里是ArduinoIDE跳出来的错误

c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp: In static member function 'static void BleMouse::taskServer(void*)':
c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp:143:37: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'String'
  143 |   BLEDevice::init(bleMouseInstance->deviceName);
      |                   ~~~~~~~~~~~~~~~~~~^~~~~~~~~~
      |                                     |
      |                                     std::string {aka std::__cxx11::basic_string<char>}
In file included from c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp:1:
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLEDevice.h:41:27: note:   initializing argument 1 of 'static void BLEDevice::init(String)'
   41 |   static void init(String deviceName);                                                            // Initialize the local BLE environment.
      |                    ~~~~~~~^~~~~~~~~~
c:\Users\HP\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp:151:50: error: no matching function for call to 'BLECharacteristic::setValue(std::string&)'
  151 |   bleMouseInstance->hid->manufacturer()->setValue(bleMouseInstance->deviceManufacturer);
      |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLEServer.h:23,
                 from C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLEDevice.h:21:
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:77:8: note: candidate: 'void BLECharacteristic::setValue(uint8_t*, size_t)'
   77 |   void setValue(uint8_t *data, size_t size);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:77:8: note:   candidate expects 2 arguments, 1 provided
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:78:8: note: candidate: 'void BLECharacteristic::setValue(String)'
   78 |   void setValue(String value);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:78:24: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'String'
   78 |   void setValue(String value);
      |                 ~~~~~~~^~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:79:8: note: candidate: 'void BLECharacteristic::setValue(uint16_t&)'
   79 |   void setValue(uint16_t &data16);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:79:27: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'uint16_t&' {aka 'short unsigned int&'}
   79 |   void setValue(uint16_t &data16);
      |                 ~~~~~~~~~~^~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:80:8: note: candidate: 'void BLECharacteristic::setValue(uint32_t&)'
   80 |   void setValue(uint32_t &data32);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:80:27: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'uint32_t&' {aka 'long unsigned int&'}
   80 |   void setValue(uint32_t &data32);
      |                 ~~~~~~~~~~^~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:81:8: note: candidate: 'void BLECharacteristic::setValue(int&)'
   81 |   void setValue(int &data32);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:81:22: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'int&'
   81 |   void setValue(int &data32);
      |                 ~~~~~^~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:82:8: note: candidate: 'void BLECharacteristic::setValue(float&)'
   82 |   void setValue(float &data32);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:82:24: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'float&'
   82 |   void setValue(float &data32);
      |                 ~~~~~~~^~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:83:8: note: candidate: 'void BLECharacteristic::setValue(double&)'
   83 |   void setValue(double &data64);
      |        ^~~~~~~~
C:\Users\HP\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.0.7\libraries\BLE\src/BLECharacteristic.h:83:25: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'double&'
   83 |   void setValue(double &data64);
      |                 ~~~~~~~~^~~~~~

exit status 1

Compilation error: exit status 1

这里是我用到鼠标库的链接： https://github.com/T-vK/ESP32-BLE-Mouse

Answer 1

让【道友老李】来帮你解答，本回答参考通义千问大模型编写，并整理提供，如果还有疑问可以点击头像关注私信或评论。

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### 问题分析

根据你提供的错误信息，问题出在 ESP32_BLE_Mouse 库中的一些类型转换错误。具体来说，std::string 类型不能直接转换为 String 类型。这通常是因为 Arduino IDE 中的 String 类型和 C++ 标准库中的 std::string 类型不兼容。

解决方案

1. 修改库文件

你需要修改 ESP32_BLE_Mouse 库中的 BleMouse.cpp 文件，将 std::string 转换为 String 类型。

修改前的代码

BLEDevice::init(bleMouseInstance->deviceName);

修改后的代码

BLEDevice::init(String(bleMouseInstance->deviceName));

同样地，对于 setValue 方法也需要进行类似的修改：

修改前的代码

bleMouseInstance->hid->manufacturer()->setValue(bleMouseInstance->deviceManufacturer);

修改后的代码

bleMouseInstance->hid->manufacturer()->setValue(String(bleMouseInstance->deviceManufacturer));

2. 重新编译

完成上述修改后，保存文件并重新编译你的项目。

示例代码

假设你有一个简单的示例代码来测试 ESP32_BLE_MOUSE 库，如下所示：

#include <BleMouse.h>

BleMouse bleMouse("My BLE Mouse");

void setup() {
  Serial.begin(115200);
  bleMouse.begin();
}

void loop() {
  if (Serial.available()) {
    char command = Serial.read();
    switch (command) {
      case 'l':
        bleMouse.click(BLE_MOUSE_LEFT);
        break;
      case 'r':
        bleMouse.click(BLE_MOUSE_RIGHT);
        break;
      case 'm':
        bleMouse.click(BLE_MOUSE_MIDDLE);
        break;
      case 'u':
        bleMouse.move(0, -10, 0);
        break;
      case 'd':
        bleMouse.move(0, 10, 0);
        break;
      case 'l':
        bleMouse.move(-10, 0, 0);
        break;
      case 'r':
        bleMouse.move(10, 0, 0);
        break;
    }
  }
}

总结

通过将 std::string 转换为 String 类型，可以解决类型不匹配的问题。确保在修改库文件后重新编译项目，以验证问题是否已解决。如果还有其他问题，请检查库的版本和依赖项是否正确安装。