Hardware schematic / ST7789 SPI Pinout (MOSI, SCLK, DC, CS) for zhengchen_minicam

[LangCheng945]

Answers checklist.

• I have read the documentation XiaoZhi AI Programming Guide and the issue is not addressed there.
• I have updated my branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

XiaoZhi AI version.

latest

Operating System used.

Windows

How did you build your project?

Command line with CMake

If you are using Windows, please specify command line type.

None

What is the expected behavior?

I am doing some custom development on the zhengchen_minicam board. The expected behavior is to successfully initialize the ST7789 display using the correct SPI GPIO pinout provided in the documentation or source code.

What is the actual behavior?

The display remains blank (only the backlight turns on) when trying to write custom code, because the exact GPIO pin mappings (MOSI, SCLK, DC, RST, CS) for this specific board are not documented in the open-source repository or Wiki.

Steps to reproduce.

Analyzed the provided firmware and serial logs.

Discovered the display initializes on SPI3_HOST.

Attempted to initialize the ST7789 screen using common ESP32-S3 pins, but failed.

Could you please share the specific GPIO pin numbers for the screen (or the hardware schematic) for the zhengchen_minicam? It would greatly help developers who want to build custom features. Thank you!

Build or installation Logs.

More Information.

No response