I am working on a project that uses BLE. I am using the BLE library from arduino, and when I turn off the BLE by calling BLEDevice::deinit(true) the code gets stuck.
I made a deeper search and found that the code got stuck on one of the four functions inside the deinit function. The deinit function os composed of these four functions:
/* STATIC */ void BLEDevice::deinit(bool release_memory) {
if (!initialized) return;
esp_bluedroid_disable();
esp_bluedroid_deinit();
esp_bt_controller_disable();
esp_bt_controller_deinit();
#ifdef ARDUINO_ARCH_ESP32
if (release_memory) {
esp_bt_controller_mem_release(ESP_BT_MODE_BTDM); // <-- require tests because we released classic BT memory and this can cause crash (most likely not, esp-idf takes care of it)
} else {
initialized = false;
}
#endif
}
I found that the code stops on the function esp_bluedroid_disable();.
I don't have Wi-Fi on the project, so I would ask for help to understand what is going on here.
As discussed in the comments, there was a problem on that BLE library of a memory leak.
The solution I found is to use another library. I used the Arduino BLE from Arduino: Arduino BLE
It also can be used on platformio projects: Arduino BLE PlatformIO Registry
A useful tutorial can be found on this link: Example