Clarification on ESP-Hosted-NG Linux Driver

[san-av]

Checklist

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Issue or Suggestion Description

I am working on porting the ESP-Hosted NG stack to an OpenWrt-based Linux target. So far, I've successfully ported all source files from the esp_hosted_ng/host/ directory and built a kernel module (esp32_sdio.ko) for SDIO-based communication with the ESP32-C6.

Based on my reading of the documentation (especially Section 4 of esp_hosted_ng/README.md) and the System Architecture diagram, it appears that there are two kernel-space layers on the Linux host:

1. SDIO/SPI/UART Bus Driver
2. ESP-Hosted NG Driver

I’d like to confirm my understanding:

Does the code under esp_hosted_ng/host/ implement both of these layers? Or is there any component from esp_hosted_ng/esp/esp_driver/network_adapter/ that also needs to be ported to the Linux host?

I appreciate any clarification you can provide.
Thanks!

[mantriyogesh]

esp_hosted_ng/esp/

This directory contains the firmware for the Espressif chip. It needs to be flashed onto the Espressif device that's connected via a communication bus such as SPI, SDIO, or UART.

esp_hosted_ng/host/

This contains the Linux-side code, which should be built as a kernel module and inserted with the appropriate module parameters.

I recommend reviewing the documentation at https://github.com/espressif/esp-hosted/tree/master/esp_hosted_ng to get a clearer understanding of the setup and requirements.

[YanKE01]

According to the README, set up the ESP-IDF environment, then enter the network_adapter directory and import the IDF environment. After selecting the chip, you can compile directly. The C6 uses SDIO as the default transport. You can change the transport method by running idf.py menuconfig and navigating to: (Top) → Example Configuration → Transport layer to select a different option.

Once the ESP32-C6 has been compiled and flashed successfully, simply connect it to the host according to the wiring instructions.