Simple mouse example fails to compile

[aramyan]

Hi, I'm trying to compile this simple mouse example in Arduino IDE

#include <BleMouse.h>

BleMouse bleMouse;

void setup() {
  Serial.begin(115200);
  Serial.println("Starting BLE work!");
  bleMouse.begin();
}

void loop() {
  if(bleMouse.isConnected()) {
    delay(500);
    Serial.println("Connected!");
  }
}

And it fails to compile with a lot of errors:

c:\Users\aramy\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp: In static member function 'static void BleMouse::taskServer(void*)':
c:\Users\aramy\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\aramy\Documents\Arduino\libraries\ESP32_BLE_Mouse\BleMouse.cpp:1:
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLEServer.h:23,
                 from C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLEDevice.h:21:
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:79:8: note: candidate: 'void BLECharacteristic::setValue(uint16_t&)'
   79 |   void setValue(uint16_t &data16);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:80:8: note: candidate: 'void BLECharacteristic::setValue(uint32_t&)'
   80 |   void setValue(uint32_t &data32);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:81:8: note: candidate: 'void BLECharacteristic::setValue(int&)'
   81 |   void setValue(int &data32);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:82:8: note: candidate: 'void BLECharacteristic::setValue(float&)'
   82 |   void setValue(float &data32);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:83:8: note: candidate: 'void BLECharacteristic::setValue(double&)'
   83 |   void setValue(double &data64);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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);
      |                 ~~~~~~~~^~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:77:8: note:   candidate expects 2 arguments, 1 provided
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\libraries\BLE\src/BLECharacteristic.h:78:8: note: candidate: 'void BLECharacteristic::setValue(String)'
   78 |   void setValue(String value);
      |        ^~~~~~~~
C:\Users\aramy\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.1\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);
      |                 ~~~~~~~^~~~~
exit status 1

Compilation error: exit status 1

What am I missing?

[1811htsang]

i have used github copilot to check and it guided me to change the taskServer function as below:

void BleMouse::taskServer(void* pvParameter) {
  BleMouse* bleMouseInstance = (BleMouse *) pvParameter; //static_cast<BleMouse *>(pvParameter);
  BLEDevice::init(bleMouseInstance->deviceName.c_str());
  BLEServer *pServer = BLEDevice::createServer();
  pServer->setCallbacks(bleMouseInstance->connectionStatus);

  bleMouseInstance->hid = new BLEHIDDevice(pServer);
  bleMouseInstance->inputMouse = bleMouseInstance->hid->inputReport(0); // <-- input REPORTID from report map
  bleMouseInstance->connectionStatus->inputMouse = bleMouseInstance->inputMouse;

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

  bleMouseInstance->hid->pnp(0x02, 0xe502, 0xa111, 0x0210);
  bleMouseInstance->hid->hidInfo(0x00,0x02);

  BLESecurity *pSecurity = new BLESecurity();

  pSecurity->setAuthenticationMode(ESP_LE_AUTH_BOND);

  bleMouseInstance->hid->reportMap((uint8_t*)_hidReportDescriptor, sizeof(_hidReportDescriptor));
  bleMouseInstance->hid->startServices();

  bleMouseInstance->onStarted(pServer);

  BLEAdvertising *pAdvertising = pServer->getAdvertising();
  pAdvertising->setAppearance(HID_MOUSE);
  pAdvertising->addServiceUUID(bleMouseInstance->hid->hidService()->getUUID());
  pAdvertising->start();
  bleMouseInstance->hid->setBatteryLevel(bleMouseInstance->batteryLevel);

  ESP_LOGD(LOG_TAG, "Advertising started!");
  vTaskDelay(portMAX_DELAY); //delay(portMAX_DELAY);
}

i have compiled success.

[AndreyLapshov]

did the same as in previous issue

[felipereyel]

Same here

[MeisterQ]

i have used github copilot to check and it guided me to change the taskServer function as below:

void BleMouse::taskServer(void* pvParameter) {
  BleMouse* bleMouseInstance = (BleMouse *) pvParameter; //static_cast<BleMouse *>(pvParameter);
  BLEDevice::init(bleMouseInstance->deviceName.c_str());
  BLEServer *pServer = BLEDevice::createServer();
  pServer->setCallbacks(bleMouseInstance->connectionStatus);

  bleMouseInstance->hid = new BLEHIDDevice(pServer);
  bleMouseInstance->inputMouse = bleMouseInstance->hid->inputReport(0); // <-- input REPORTID from report map
  bleMouseInstance->connectionStatus->inputMouse = bleMouseInstance->inputMouse;

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

  bleMouseInstance->hid->pnp(0x02, 0xe502, 0xa111, 0x0210);
  bleMouseInstance->hid->hidInfo(0x00,0x02);

  BLESecurity *pSecurity = new BLESecurity();

  pSecurity->setAuthenticationMode(ESP_LE_AUTH_BOND);

  bleMouseInstance->hid->reportMap((uint8_t*)_hidReportDescriptor, sizeof(_hidReportDescriptor));
  bleMouseInstance->hid->startServices();

  bleMouseInstance->onStarted(pServer);

  BLEAdvertising *pAdvertising = pServer->getAdvertising();
  pAdvertising->setAppearance(HID_MOUSE);
  pAdvertising->addServiceUUID(bleMouseInstance->hid->hidService()->getUUID());
  pAdvertising->start();
  bleMouseInstance->hid->setBatteryLevel(bleMouseInstance->batteryLevel);

  ESP_LOGD(LOG_TAG, "Advertising started!");
  vTaskDelay(portMAX_DELAY); //delay(portMAX_DELAY);
}

i have compiled success.

This did not work for me.

[RedosSan]

In the Arduino IDE in 'BOARD MANAGER' search for esp32, for me 'esp32 by Espressif Systems' was in version 3.3.0, but searching for my board the manufacturer said it had to be a version 2.0.14 or below or some issues could apear, I did this downgrade and it worked here

[felipereyel]

In the Arduino IDE in 'BOARD MANAGER' search for esp32, for me 'esp32 by Espressif Systems' was in version 3.3.0, but searching for my board the manufacturer said it had to be a version 2.0.14 or below or some issues could apear, I did this downgrade and it worked here

I did this and it worked

[jconnel3]

@1811htsang I have tried your solution and was able to get the code to compile, however anytime I try to connect to the esp32 c6 that I am using over bluetooth I get a load access fault: "Guru Meditation Error: Core 0 panic'ed (Load access fault). Exception was unhandled."

[Talismancer]

The problem is that the library was written for ESP32 board version 2.x and Espressif have updated the board library to 3.x. Go into board manager and downgrade "esp32" from 3.x to version 2.0.17. It should then compile and connect.
I tried the above fixes and also the strings problem as per pull request #77 but it wouldn't connect. This fixed it.