Using latest ESP32 Arduino, but with own IDF configuration

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1

I try to use the latest ESP32-Arduino framework, but need to change some configuration of the underlying IDF.

How to do this?

My current platformio.ini:

[env:esp32-v2-upstream]
platform = https://github.com/platformio/platform-espressif32.git#feature/arduino-upstream
board = esp32doit-devkit-v1
framework = arduino
platform_packages = framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git
build_flags = -DESP32 -DCORE_DEBUG_LEVEL=5

What I want now is the ability to change IDF sdkconfig.esp32dev - like it is possible when I directly use the IDF.

It seems that the IDF for Arduino-ESP32 comes as pre-compiled library (in ~/.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32), so I need to be able to compile such an own SDK variant on my own? Is there some “Howto” do this?

2

PlatformIO is currently very much lagging behind the current versions. There is no official support for even the latest Arduino-ESP32 2.0 version (Support for the latest Arduino v2.0 · Issue #619 · platformio/platform-espressif32 · GitHub), and the latest support ESP-IDF version per releases is v4.3.2, whereas Arduino-ESP32 uses a v4.4 version.

The clostest someone seems to have gotten with native PlatformIO (framework = espidf, arduino as in espidf-arduino-blink) is using a custom-updated platform that has Arduino-ESP32 2.0 support, ~~but is apparently lacking the ESP-IDF v4.4 support, leading to errors shown in examples/espidf-arduino-blink build fails: unknown type name '_lock_t' · Issue #685 · platformio/platform-espressif32 · GitHub These errors were already resolved by the poster, and there seems to be an official ESP-IDF+Arduino example in the tasmato platform-espressif32 repo.

A way in the middle would be to use that custom-updated platform to get Arduino-ESP32 2.0.2, and then use the regular esp32-arduino-lib-builder tool to generate the precompiled .a libraries under a new sdkconfig and put those in the framework-arduinoespressif32 folder.

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3

Thanks again for your quick response.

So, I was able to use the espidf-arduino-blink example configuration to build an own IDF.

This platformio.ini works for me and build fine!

[env:esp32-v2-upstream]
platform = https://github.com/Jason2866/platform-espressif32/releases/download/v2.0.2/platform-espressif32-2.0.2.zip
board = esp32doit-devkit-v1
framework = arduino, espidf
platform_packages = framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git
build_flags = -DESP32 -DCORE_DEBUG_LEVEL=6

I changed the IDF sdkconfig to what I need (especially enabling arduino CONFIG_AUTOSTART_ARDUINO=y and disabling Bluetooth SSP (unset CONFIG_BT_SSP_ENABLED), patched the Arduino-ESP32 framework to get rid of SSP symbols (in BluetoothSerial.cpp) and thus am able to work around No Bluetooth SPP connection possible with IDF 4.3.2 (IDFGH-6766) · Issue #8394 · espressif/esp-idf · GitHub / https://github.com/espressif/arduino-esp32/issues/6061) :slight_smile:

Next step: Add a connection to BLE device in parallel…

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