Issue with ESP32/BLE activated and Sprites

[Rockman18]

On Arduino IDE and PlatformIO. I'm using a TTGO T-Display 16MB (ESP32). I want to push a sprite corresponding to a png image with transparency (normally loaded on LitlleFS but in my sample i use a fake sprite). This Sprite is pushed on a background sprite. I have another sprite corresponding to a button. I push it twice on the background sprite too. Then I push the background sprite to TFT. If I add BLEDevice::init() my png sprite never appear on scren but my buttons sprites are well displayed. Without BLEDevice::init(), all the sprites are well displayed. There is enough heap available, so I can't understand this behaviour.

• arduino-esp32 v3.0.1 (I can't use 2.x because all my BLE architecture is based on the latest API, I need the new APIs)
• TFT_eSPI v2.5.43 (to compile with arduino-esp32 v3.0.1 I use the workaround described in compile error in arduino ide #3346)

PlatformIO.ini

[env:lilygo-t-display]
platform = https://github.com/platformio/platform-espressif32.git
board = lilygo-t-display
board_build.partitions = huge_app.csv
board_build.filesystem = littlefs
framework = arduino
platform_packages =
	framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#3.0.1
	framework-arduinoespressif32-libs @ https://github.com/espressif/arduino-esp32/releases/download/3.0.1/esp32-arduino-libs-3.0.1.zip
monitor_speed = 115200
lib_deps =
	bodmer/TFT_eSPI@^2.5.43
	bitbank2/PNGdec@^1.0.2

main.cpp

#include <Arduino.h>
#include <TFT_eSPI.h>
#include <BLEDevice.h>

static TFT_eSPI tft = TFT_eSPI();

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

  // TFT init
  tft.begin();
  tft.fillScreen(TFT_BLACK);

  BLEDevice::init("MyBLEDevice"); // Comment this line to display png_transparent sprite.
}

void loop()
{
  Serial.print("Heap : ");
  Serial.print(ESP.getFreeHeap());
  Serial.print("/");
  Serial.println(ESP.getHeapSize());

  TFT_eSprite backgroundSprite = TFT_eSprite(&tft);
  backgroundSprite.createSprite(135, 240);
  backgroundSprite.fillSprite(TFT_CYAN);

  // Header
  backgroundSprite.fillRect(0, 0, 135, 20, TFT_BLACK);
  
  // Header content
  backgroundSprite.setTextFont(2);
  backgroundSprite.setTextSize(1);
  backgroundSprite.setTextDatum(MC_DATUM);
  backgroundSprite.setTextColor(TFT_LIGHTGREY);
  backgroundSprite.drawString("HEADER", 67, 10);

  // Mid-Zone
  TFT_eSprite png_transparent = TFT_eSprite(&tft);
  png_transparent.createSprite(135, 200);
  png_transparent.fillSprite(TFT_TRANSPARENT);
  png_transparent.fillRect(10, 10, 50, 50, TFT_GREEN);
  png_transparent.pushToSprite(&backgroundSprite, 0, 20, TFT_TRANSPARENT); // Never pushed on background if BLEDevice is init
  png_transparent.deleteSprite();

  // Footer
  backgroundSprite.fillRect(0, 220, 135, 20, TFT_BLACK);

  // Footer content
  backgroundSprite.drawNumber(esp_timer_get_time() / 1000000, 67, 230);

  TFT_eSprite button = TFT_eSprite(&tft);
  button.createSprite(40, 10);
  button.fillSprite(TFT_RED);
  button.pushToSprite(&backgroundSprite, 5, 225, TFT_TRANSPARENT); // Well pushed on background
  button.pushToSprite(&backgroundSprite, 90, 225, TFT_TRANSPARENT); // Well pushed on background
  button.deleteSprite();

  backgroundSprite.pushSprite(0, 0, TFT_TRANSPARENT);
}

With BLEDevice::init() :

Without BLEDevice::init() :