BLECharacteristic still a String even after changing platform

ocorbonneau · December 28, 2024, 9:52pm

i recently changed the platform of my project as suggested in my first post:
here : https://community.platformio.org/t/how-to-make-sure-i-have-the-latest-arduino-esp32-core/44760

and i find it strange that when i look at the latest arduino-esp32/librairies/BLE/src/BLECharacteristic.cpp the getValue() method returns a std::string and in my actual code it seems to still be a arduinoString ?

why ?

sivar2311 · December 29, 2024, 8:17am

If you use the link to the exact version like so:

platform = https://github.com/pioarduino/platform-espressif32/releases/download/53.03.10/platform-espressif32.zip

getValue() is of type String

You can check the version used during the build process in the terminal window. Watch the output:

PACKAGES: 
 - framework-arduinoespressif32 @ 3.1.0

ocorbonneau · December 29, 2024, 10:22am

could you point me the exact source of the method because if i take a look here :

arduino-esp32/libraries/BLE/src/BLECharacteristic.cpp at 16f4b0f5baf4d8fe4c679f478dc259aadbb3b68a · espressif/arduino-esp32 · GitHub

its typed as an std::string

thank you

sivar2311 · December 29, 2024, 10:25am

Sure:

github.com

espressif/arduino-esp32/blob/5afbb3804be1b4aac73d47448fb1010c95bbb164/libraries/BLE/src/BLECharacteristic.cpp#L167


      
          * @return The UUID of the characteristic.
          */
          BLEUUID BLECharacteristic::getUUID() {
           return m_bleUUID;
          }  // getUUID
          
          /**
          * @brief Retrieve the current value of the characteristic.
          * @return A pointer to storage containing the current characteristic value.
          */
          String BLECharacteristic::getValue() {
           return m_value.getValue();
          }  // getValue
          
          /**
          * @brief Retrieve the current raw data of the characteristic.
          * @return A pointer to storage containing the current characteristic data.
          */
          uint8_t *BLECharacteristic::getData() {
           return m_value.getData();
          }  // getData

You have to look at the correct branch / Version:

or

The link you used was a commit from 3 years ago:

ocorbonneau · December 30, 2024, 2:57pm

big oopsie of my part. thank you for your quick answer !