remove modules i2s and rmt from firmware and some other.

[MadeInFondDuGarage]

Hello,
i need to remove some hardware module from esp32s3 compilation in micropython to make my own drivers. because my drivers is time sensitive i cant use micropython layer. also i need to remove all stuff for bluetooch, ble, and network at all via wifi.
but i can see how to add user module, but nothing clear to remove then and especially all esp-idf stuff.

thanck you for your help.

[Josverl]

If you truly remove all parts of esp-idf, which is essentially the SDK for running on any esp, then the code just wont even compile - let alone run.
What you probably want is to selectively disable, or enable features. That is handles though compiler flags that can be passed one by one on the when building , or combined in the mpconfigboard.h for your board or variant.

I think you should consider:

• creating a variant of the ESP32-S3 board,
• with its own mpconfigboard.h
• and use that to disable the features

A few relevant articles on the wiki :

• https://github.com/micropython/micropython/wiki/Adding-Board-Profiles#board-variants
• https://github.com/micropython/micropython/wiki/macros_mp

[peterhinch]

i need to remove some hardware module from esp32s3 compilation ... because my drivers is time sensitive

If you don't specifically enable BT, WiFi etc. in your Python code they don't use CPU time - I don't think any performance is gained by removing the code from the build.

[MadeInFondDuGarage]

Hello thank you for the answer.
I want to remove some module not for gaining cpu time.
I need to remove them because i need a direct acces to low level hardware directly without preamptive operation made by micropython on the boot.
I need to act on ns or µs on pin pulse. And i want to remove them for size of firmware.

i have succeful remove i2s ans some other stuff, i need to find something else for esp32_rmt, because is it not in mpconfig.h.

i will post my resolve after i found it.

[shariltumin]

To include esp32_rmt you need to build a custom MicroPython firmware for your esp32s3 board. You need to provide a C user‑module that wraps the ESP‑IDF 5.5.1 esp32_rmt driver for use from MicroPython.

You can try asking different AI apps with the following prompt:

I want to make a C user module of esp32_rmt build with ESP-IDF 551 for MicroPython running on ESP32-S3

You might get some useful suggestions. Note that you may need to make some adjustments, as the answers will probably are based on an older MicroPython build framework.

There are many ways on how to build a custom firmware. If you are interested in knowing how I didi it, go to https://github.com/shariltumin/wt32-eth01-nat-micropython for an example. My build system is on a Linux PC. Unfortunately, I can't help if you're using Windows or macOS.