How to use ESP-AT with ESP32P4 as host and ESP32C6 as controller?

[ujurmsde]

I have a development board that has ESP32P4 chip that is connected to ESP32C6 module over SDIO pins.
I have prepared the development environment with installing required software such as IDF and AT

But, how can I flash the C6 with AT firmware? I know that there is

at_sdio_host

example that can be used to communicate over SDIO to flash another chip.

If I flash at_sdio_host to ESP32P4, can I flash the AT firmware to C6 module? or I need some SDIO firmware preinstalled on C6?

I am bit confused.!

https://docs.espressif.com/projects/esp ... IO_AT.html

[esp-at]

yes, you should according to https://docs.espressif.com/projects/esp ... IO_AT.html document, generates a esp32c6-sdio AT firmware.