issue connecting callback with SetEventhandler for eventType BLERead

[jejmule]

Hello,

I am working on a data logger. Data are saved on a SD card then at the end of the session data are uploaded to the phone. I have an issue with the connection of a callback on a read characteristic. I have already attached BLESubscribed, BLEUnsubscribed, BLEWritten but I do not managed to have a working callback on BLERead enventType.

My callback print a message on the Serial that I do not received and the PunchThrough android application returns ERROR 7 when I ask to read this characteristic.

Piece of my code, I have copied only parts related to this characteristic.

I believe it's an issue but i may have a wrong use of the callback event.... I do not know.

Thanks in advance

#define DATA_SIZE 68

//Custom GATT Characteristic to upload data file to phone
BLECharacteristic uploadChar("fd0e2894-e3f2-11eb-ba80-0242ac130004",BLERead, DATA_SIZE);
//callback
void uploadCharRead(BLEDevice central, BLECharacteristic characteristic);

// buffer to uplod
byte upload_buffer[DATA_SIZE];

void setup() {
    //INIT BLE
    initBLE();
}

void initBLE(){
  pinMode(LED_BUILTIN, OUTPUT); // initialize the built-in LED pin to indicate when a central is connected
  // begin initialization
  if (!BLE.begin()) {
    Serial.println("starting BLE failed!");
    while (1);
  }

  //BLE.debug(Serial);

 // BLE.setAdvertisingInterval(40); // 25ms = 40 * 0.625 ms

  // assign event handlers for connected, disconnected to peripheral
  BLE.setEventHandler(BLEConnected, blePeripheralConnectHandler);
  BLE.setEventHandler(BLEDisconnected, blePeripheralDisconnectHandler);

  //Add service and characteritics
  BLE.setLocalName("KiteBoardSensing");
  BLE.setAdvertisedService(kiteService); // add the service UUID
  kiteService.addCharacteristic(dataChar);
  kiteService.addCharacteristic(battChar);
  kiteService.addCharacteristic(tareChar);
  kiteService.addCharacteristic(recordChar);
  kiteService.addCharacteristic(uploadChar);
  BLE.addService(kiteService);

  // assign callback
  uploadChar.setEventHandler(BLERead, uploadCharRead);

  //Start advertising
  BLE.advertise();
  Serial.println("Bluetooth device active, waiting for connections...");
}

void uploadCharRead(BLEDevice central, BLECharacteristic characteristic){
  Serial.print("Upload characteristic event, read: ");
  //open file for uploading
  uploadChar.writeValue(upload_buffer,DATA_SIZE);
}

[strukiii]

Hey! Were you able to resolve this? I'm attempting a similar callback setup instead using BLERead | BLEIndicate. I need the callback to fire off upon the central reading my data but it's not working either.