IRAM usage error while building custom firmware

[d-solis-tovar]

Hi,

I'm starting a project to build my own custom micropython firmware for esp32.

I first tried to build the ESP32_GENERIC board firmware using ESP-IDF and make commands. However, I always find the same error:

micropython.elf section .iram0.text' will not fit in region iram0_0_seg'

The applications static IRAM usage is larger than the available IRAM size.

I read other posts where it is suggested to modify partition table and configuration settings on sdkconfig file to optimize memory usage. However, none of these solutions worked for me.

I can't figure out what is going wrong. Any suggestions for me to try?

I'm using ESP-IDF v5.0.4

Thank you!

[LeosDing]

Hi,

I'm starting a project to build my own custom micropython firmware for esp32.

I first tried to build the ESP32_GENERIC board firmware using ESP-IDF and make commands. However, I always find the same error:

micropython.elf section .iram0.text' will not fit in region iram0_0_seg'

The applications static IRAM usage is larger than the available IRAM size.

I read other posts where it is suggested to modify partition table and configuration settings on sdkconfig file to optimize memory usage. However, none of these solutions worked for me.

I can't figure out what is going wrong. Any suggestions for me to try?

I'm using ESP-IDF v5.0.4

Thank you!

I have found same question ...

[jimmo]

Do you have any changes and are you using the latest MicroPython code? We build the ESP32_GENERIC firmware as part of the continuous integration on GitHub, so it should work.

[shariltumin]

This is my build script "mpb.sh":

#!/bin/bash

export PATH="$HOME/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

echo "=========================================================="
echo "Setting up for esp32 build"
echo "Using esp-idf-504"
export IDF_PATH="$HOME/disk/esp/esp-idf-504"
export IDF_TARGET="esp32"
source $IDF_PATH/export.sh

make V=1 BOARD=ESP32_GENERIC

You may need to change the paths to suit your local installations.

Put this script in the micropython/ports/esp32 and chmod u+x mpb.sh. Then just run it,
./mpb.sh

Remember to do make -C mpy-cross in the micropython directory first.

Hope this helps.

[GCTechnology]

The same problem on ESP-IDF v5.2, a 'build' command under ./ports/esp32

[jonnor]

esp-idf 5.2 is known to be bigger, see https://github.com/orgs/micropython/discussions/14263
Using 5.0.4 though should work, at least with a default MicroPython board configuration. All the builds currently on the MicroPython download page are made that way.

[GCTechnology]

ESP-IDF v5.0.4 works.