Hi, I also want to use the RMII interface in a product with a longer expected availability than ESP32 but none of the coming ESP32-S or ESP32-C have the interface.

If ESP32-S3 have had RMII that would have been an perfect fit. Are there any plans for coming chips with RMII?

One way is to let the wifi driver setup the interrupt handler. Then you could replace it with your own and call the "original" wmac handler. Assuming it to clear/acknowledge the interrupt properly. Example: #include <freertos/FreeRTOS.h> #include <esp_intr_alloc.h> static xt_handler wmac_xt_handler;...

Thanks esp_timer_get_time() is way faster, around 10us (instead of 48us). I will test if that is fast enough for my application. I have tested to read it once every second in an GPIO ISR. One interesting thing is if I read it twice the second read is fast <2us Example code: static void IRAM_ATTR gpi...

Have a lock at the MAC_INTR
https://www.espressif.com/sites/default ... ual_en.pdf

And ETS_WMAC_INUM in the git repo:
https://github.com/espressif/esp-idf/se ... _WMAC_INUM

I try to use esp_wifi_get_tsf_time on esp32s2 to timestamp an periodic event on the connected stations. My problem is that esp_wifi_get_tsf_time takes around 48 micro-seconds to evaluate and the periodic event is faster than that (< 30us) Is there a way to speed up the reading of the TSF time? I hav...