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ESP32-P4-Function-EV-Board / ESP32-P4X-Function-EV-Board

main/boards/espressif/esp32-p4-function-ev-board/README.md

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ESP32-P4-Function-EV-Board / ESP32-P4X-Function-EV-Board

Shared board support for Espressif's ESP32-P4-Function-EV-Board and ESP32-P4X-Function-EV-Board. Wi‑Fi uses ESP‑Hosted via the on‑board ESP32‑C6. LCD is supported via the official MIPI‑DSI LCD adapter.

Features

  • Wi‑Fi: esp_wifi_remote + esp_hosted (SDIO) with ESP32‑C6 co‑processor
  • Display: 7" MIPI‑DSI LCD (1024×600) via adapter; can also run headless
  • Audio: ES8311 codec with speaker and microphone support
  • Touch: GT911 capacitive touch controller
  • SD Card: MicroSD card support (MMC mode)
  • Camera: MIPI-CSI camera interface (OV5647 and SC2336 sensors supported)
  • USB: USB host/device support
  • SPIFFS: Built-in flash filesystem support
  • Fonts: Custom font support with Unicode characters (Vietnamese, Chinese, etc.)

Configure

In menuconfig: Xiaozhi Assistant -> Board Type -> ESP32-P4/P4X-Function-EV-Board

Ensure these are set (auto-set when building via config.json):

  • CONFIG_SLAVE_IDF_TARGET_ESP32C6=y
  • CONFIG_ESP_HOSTED_P4_DEV_BOARD_FUNC_BOARD=y
  • CONFIG_ESP_HOSTED_SDIO_HOST_INTERFACE=y
  • CONFIG_ESP_HOSTED_SDIO_4_BIT_BUS=y

The board initializes I2C, LCD, touch, audio, SDMMC, and camera hardware directly from the board implementation. It does not depend on the espressif/esp32_p4_function_ev_board BSP, allowing the project-wide esp_video dependency to resolve independently.

LCD Connection (from Espressif user guide)

  • Connect the LCD adapter board J3 to the board’s MIPI DSI connector (reverse ribbon).
  • Wire RST_LCD (adapter J6) to GPIO27 (board J1).
  • Wire PWM (adapter J6) to GPIO26 (board J1).
  • Optionally power the LCD adapter via its USB or provide 5V and GND from the board.

These pins are configured in config.h as DISPLAY_RESET_PIN=GPIO27 and DISPLAY_BACKLIGHT_PIN=GPIO26. Resolution is set to 1024×600.

Build (example)

powershell
idf.py set-target esp32p4
idf.py menuconfig
idf.py build

Tip: In menuconfig, choose Xiaozhi Assistant -> Board Type -> ESP32-P4/P4X-Function-EV-Board. If building a release via scripts, the config.json in this folder appends the required Hosted options.