I am trying to find a predictable-latency indicator for the RX time of a WiFi packet on the ESP32-S3 as part of my bachelor thesis.
I have stumbled upon the `BB_DIAG0_IDX` through `BB_DIAG18_IDX` signals in `components/soc/esp32s3/include/soc/gpio_sig_map.h` and some experiments did confirm that they seem to relate to WiFi PHY activity.
Could you provide some additional documentation on the meaning of these GPIO-routable signals?
Even a name more descriptive than `BB_DIAG0` would help. My guess is they have these generic names because they serve as debugging signals for both WiFi and Bluetooth PHY and thus have a different meaning depending on a configuration register or something like that?
I am a big fan of the huge versatility of ESP32-style chips. Always discovering new peripherals I can combine in creative ways
I hope you can help me out!Best regards,
Schuwi