worked

mine is is stuck at 400, and I can not set to 360

I tried
CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ=360
CONFIG_ESP32_P4_FORCE_400MHZ=n

in y defaults but its forced to 400

if I use menue config its not an option (red)

I need 630 as I get kernel panics at 400

ESP-ROM:esp32p4-eco2-20240710
Build:Jul 10 ...

dup post

This does work, but the time form high to low is a minimum of 696 ns. that won't work unfortunately.

I can change the mode easy enough with I can change the mode easy enough with GPIO_MODE_INPUT_OUTPUT_OD

but I'm still not able to find the way to change directions when using bundles. Seems if I write low, the device can not talk ( good ) if I pull high the device cant talk ( good) but I can not ...

yes I saw that, as I said, but I found my underlying issue.

If I do as suggested it works, but its very sloppy and slow. The solution learned a ways back as to use GPIO bundle code. This makes the timing very fast and very smooth. But in in working with the info given in this thread, I now see ...

I see what was wrong, its my GPIO bundle code. I guess to get precise timing, you need to use the GPIO bundles. but need to disbale it to use inputs.

yeah looks better, I do not see how to interface with it ( i.e. how to use the hw pointer and what not) but its a lot easier to follow. I may be able to use the functions anyways.

any idea what is meant by The LL layer? I do have the s3.

EDIT__________

So yes this is very good info, thx for this ...

This looks great, I think its what I want but its written in C++ and I can not use the header. So I'd have to take this all a part and rewrite it. Sadly way complicated and worse, not documented. I feel like its just putting my at another drawing board.

I'm trying to follow the TRM and set my registers but I'm struggling.

I think I want maybe
REG_WRITE(GPIO_FUNC0_OUT_SEL_CFG_REG, SIG_GPIO_OUT_IDX);
or
GPIO_FUNC0_OUT_SEL_CFG_REG ( 256 )
Or maybe that is the same thing?

and then maybe
WRITE_PERI_REG( GPIO_OUT_REG[0], REG_READ(GPIO_OUT_REG[0 ...