esp32 arduino ide client)How can you print it out in HEX?

Question

static void notifyCallback( 
  BLERemoteCharacteristic* pBLERemoteCharacteristic, 
  uint8_t* pData,
  size_t length,
  bool isNotify) 
{
  Serial.print("data length: ");
  Serial.println(length);
  Serial.print("data: ");
  Serial.println(*pData,HEX);
}

pData is received in the uint8_t* type. but I want to print it out in hex form. So I wrote Serial.println(*pData,HEX); How should I fix this?

Answer 1

You could access the array elements of pData. The amount of values is given in length.

static void notifyCallback( 
  BLERemoteCharacteristic* pBLERemoteCharacteristic, 
  uint8_t* pData,
  size_t length,
  bool isNotify ) 
{
  Serial.print( "data length: " );
  Serial.println( length );
  for ( int i = 0; i < length; i++ )
  {
    Serial.print( "data: " );
    Serial.println( pData[i], HEX );
  }
}