feat(NimBLE): Add support for NimBLE

Co-authored-by: h2zero <ryan@nable-embedded.io>

Author: lucasssvaz

cores/esp32/esp32-hal-bt.c

@@ -15,7 +15,7 @@
 #include "esp32-hal-bt.h"
 
 #if SOC_BT_SUPPORTED
-#ifdef CONFIG_BT_BLUEDROID_ENABLED
+#if defined(CONFIG_BLUEDROID_ENABLED) || defined(CONFIG_NIMBLE_ENABLED)
 
 #if CONFIG_IDF_TARGET_ESP32
 bool btInUse() {
@@ -116,7 +116,7 @@ bool btStop() {
   return false;
 }
 
-#else  // CONFIG_BT_ENABLED
+#else  // !defined(CONFIG_BLUEDROID_ENABLED) && !defined(CONFIG_NIMBLE_ENABLED)
 bool btStarted() {
   return false;
 }
@@ -129,6 +129,6 @@ bool btStop() {
   return false;
 }
 
-#endif /* CONFIG_BT_ENABLED */
+#endif /* !defined(CONFIG_BLUEDROID_ENABLED) && !defined(CONFIG_NIMBLE_ENABLED) */
 
 #endif /* SOC_BT_SUPPORTED */

libraries/BLE/README.md

@@ -1,8 +1,12 @@
 # ESP32 BLE for Arduino
 The Arduino IDE provides an excellent library package manager where versions of libraries can be downloaded and installed. This Github project provides the repository for the ESP32 BLE support for Arduino.
 
-The original source of the project, **which is not maintained anymore**, can be found here: https://github.com/nkolban/esp32-snippets
+The original source of the Bluedroid project, **which is not maintained anymore**, can be found here: https://github.com/nkolban/esp32-snippets
 
-Issues and questions should be raised here: https://github.com/espressif/arduino-esp32/issues <br> (please don't use https://github.com/nkolban/esp32-snippets/issues!)
+Some parts of the NimBLE implementation are based on the work of h2zero, which can be found here: https://github.com/h2zero/NimBLE-Arduino
+
+Issues and questions should be raised here: https://github.com/espressif/arduino-esp32/issues <br> (please don't use https://github.com/nkolban/esp32-snippets/issues or https://github.com/h2zero/NimBLE-Arduino/issues!)
 
 Documentation for using the library can be found here: https://github.com/nkolban/esp32-snippets/tree/master/Documentation
+
+For a more customizable and feature-rich implementation of the NimBLE stack, you can use the [NimBLE-Arduino](https://github.com/h2zero/NimBLE-Arduino) library.