ESP32-P4 Compilation Fails Due to Unconditional esp_bt.h Includes

[landfishllc]

Hi NimBLE-Arduino maintainers!!!!🐟 👋 🤗 Thanks for your hard wizarding work ❤

I'm working with an ESP32P4 dev board, which includes a peripheral ESP32C6, pre-configured for ESP-Hosted

When I compile a minimal source file containing a #include <BleGamepad.h> statement, the build fails at libraries/NimBLE-Arduino/src/nimble/esp_port/esp-hci/esp_nimble_hci.c:18 due to an unconditional #include <esp_bt.h> (P4 has no onboard radio) even though commit 081bb7f added ESP32P4 include guards elsewhere/attempted to implement Hosted compatibility.

(My sdkconfig is correctly set up, I have been editing the template sdkconfig used by arduino-cli)

Steps to Reproduce:

Board: ESP32-P4 DevKit (Arduino IDE 2.3.2)
ESP32 Core: 3.2.0-RC1
Library: NimBLE-Arduino 2.2.2
Error:

1. Create an Arduino project
2. Install and include NimBLE-dependent library (such as ESP32-BLE-Gamepad)
3. Compile

Expected Behavior:

Successful compilation when CONFIG_IDF_TARGET_ESP32P4 is defined.

Actual Behavior:

Used platform Version   Path
esp32:esp32   3.2.0-RC1 /home/ramblecube/.arduino15/packages/esp32/hardware/esp32/3.2.0-RC1
/home/ramblecube/Arduino/libraries/NimBLE-Arduino/src/nimble/esp_port/esp-hci/src/esp_nimble_hci.c:18:10: fatal error: esp_bt.h: No such file or directory
   18 | #include <esp_bt.h>
      |          ^~~~~~~~~~
compilation terminated.
Error during build: exit status 1

Workaround Attempt:

Wrapping the include with #if !defined(CONFIG_IDF_TARGET_ESP32P4) in affected files resolves the immediate error, but causes subsequent errors (undefined reference, etc.) that get worse as I include more wraps

Question:

Is ESP32P4 supported yet?

Environment:

-:: Linux x64

ESP-IDF: v5.2.1
Arduino Core: esp32:[email protected]

Thank you for your time! Let me know if more details would help.

[h2zero]

Hello @landfishllc, the CPP code in this repo mirrors esp-nimble-cpp which does support the P4. This repo cannot support it due to dependencies and conflicts in the Arduino core. You will need to use esp-nimble-cpp and esp-idf to support this board.

[landfishllc]

h2zero, you are my h2hero, thanks for getting back to me so fast.

Unfortunately, my product parameters require the use of Arduino IDE (target developers will be children and teens).

I will attempt to incorporate the esp-nimble-cpp IDF component into the local esp-idf managed by Arduino, and work with that API.

If this does not work out, I will write custom C6 firmware and comm with AT commands.

I am doing my best Googling, but as of now, do you know of any BLE library for Arduino IDE supporting the Hosted architecture for P4?

[h2zero]

That's unfortunate but understandable. In that can you can make a custom arduino core and enable Nimble and add esp-nimble-cpp, Tasmota has a similar configuration. You'll need to add the hosted library as well of course.

I haven't seen anyone attempt this with Arduino so you're probably the first, good luck!

[lyusupov]

is there any progress on that ? Recent Release 2.3.1 still gives build failure with ESP32-P4 and Arduino Core 3.x...