Set default CPU for SPI ISR

[artemsen]

Fixes the error during SPI initialization:

E (417) spi_master: spi_master_init_driver(236): invalid core id
W (417) LGFX: Failed to spi_bus_add_device.

[artemsen]

Looks like the CI process uses an old version of ESP-IDF.
I work with the the latest master which has this commit.

[tobozo]

hi, thanks for your contribution 👍

the build failed for every esp32 job, can you describe the successful environment you used so it can be added to the workflows?

isolating this change in a LFGX config block may avoid the pitfall of hitting incompatibility with older tested versions, it looks like isr_cpu_id hasn't always been a member of spi_bus_config_t:

error: 'struct spi_bus_config_t' has no member named 'isr_cpu_id'
         buscfg.isr_cpu_id = INTR_CPU_ID_AUTO;

in other situations (e.g. platformio), an extra include may be necessary to bring the missing define up to scope:

error: 'INTR_CPU_ID_AUTO' was not declared in this scope
         buscfg.isr_cpu_id = INTR_CPU_ID_AUTO;
                             ^~~~~~~~~~~~~~~~

please enable the workflows on your fork so you can verify that every test succeds before submitting, also target the 'develop' branch instead of the master branch.

[tobozo]

LovyanGFX doesn't support the master branch of esp-idf, only some of their releases when the version number makes sense and has been thoroughly tested, this excludes the beta version you linked.

Unfortunately v5.1 and 5.0.3 won't be added to the workflows until the release descriptions are disambiguated and evocate logic instead of version incest:

ESP-IDF v5.1 is a minor update for ESP-IDF v5.0. Release v5.1 is mostly compatible with apps written for ESP-IDF v5.0.

ESP-IDF v5.0.3 is a bugfix update for ESP-IDF v5.0.

[artemsen]

LovyanGFX doesn't support the master branch of esp-idf

Ok. Just FYI, it works perfect with today's esp master, at least with WT32-SC01 =)

Unfortunately v5.1 and 5.0.3 won't be added to the workflows

Sorry, then I close this PR.

Thank you!

[tobozo]

FYI esp-idf 5.1 was added anyway to the CI tests on the develop branch

https://github.com/lovyan03/LovyanGFX/blob/develop/.github/workflows/IDFBuild.yml

[artemsen]

I have enabled CI workflow for my fork, so all idf builds have passed, but all other (arduino, opencv, ...) has failed. I'm not sure if it's my fault =)
I can create PR to the develop branch to run check inside the origin CI.

[tobozo]

The opencv error is probably due to a cache miss, it just means the opencv install script is outdated and needs to be rewritten but may be ignored for this PR.

The ArduinoCIBuild has been disabled for long and isn't used any more so that error can be ignored too.

Creating a new PR from/to develop branches will sure be the best way to verify this 👍