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FAQ

Q: Which screens are supported by the development board?

A: Please first check the component documentation to confirm compatible screen types: esp32_p4_platform

If you have requirements for adapting other screens or wish to inquire about support for specific screens, you can submit an issue via Waveshare's official after-sales support or the following address:

Request Support

We will follow up and respond to your requests promptly.

Q: How do I confirm the ESP32-P4 chip revision?

A: Refer to the onboard chip silkscreen and the serial boot log. The ESP32-P4 Platform examples provide build configurations for rev v3.0 and later chips, rev v3.1 and later chips, and rev v0.x / v1.x engineering samples. Before flashing, please ensure that the firmware configuration matches the actual chip revision.

Q: Which ESP-IDF version is recommended for ESP32-P4?

A: ESP-IDF v5.5.1 - v5.5.4 is recommended. The ESP32-P4 Platform examples are primarily maintained for ESP-IDF release/v5.4 and later versions. Some advanced UI examples may retain compatibility notes for release/v5.3; please refer to the README in the example directory for details.

Q: How to handle the chip revision mismatch error when flashing?

A: This message indicates that the ESP32-P4 chip revision configuration in the current firmware does not match the onboard chip. Do not use --force to skip the check; instead, rebuild according to the actual chip revision.

The ESP32-P4 Platform repository provides shared configuration files:

  • rev v3.1 or later: config/esp32p4_rev_v3_1.defaults
  • rev v3.0 or later: config/esp32p4_rev_v3_0.defaults
  • rev v0.x / v1.x engineering samples: config/esp32p4_rev_pre_v3.defaults

Specify the corresponding configuration via SDKCONFIG_DEFAULTS in the example directory. For detailed commands, see ESP-IDF Example Instructions.

Q: How to use the Type-A ports on the development board?

A: Among the four Type-A ports, one is directly connected to the ESP32-P4, and the other three are connected to the CH334 HUB chip. You can use the jumper caps on the board to switch the ESP32-P4 between direct connection and connection to the CH334.

  1. For board silkscreen Rev1.1 (ESP32-P4 chip revision v1.3):

    • When the jumper is on the DEVICE side, USB port 1 is enabled.
    • When the jumper is on the HOST side, USB ports 2-4 are enabled.

  2. For board silkscreen Rev1.2 (ESP32-P4 chip revision v3.1):

    • When the jumper is on the HOST side, USB port 1 is enabled.
    • When the jumper is on the DEVICE side, USB ports 2-4 are enabled.
Q: How to flash firmware onto the ESP32-C6?
warning

The ESP32-C6 comes with factory firmware by default. It is usually not necessary to flash it separately; if an upgrade is required, please confirm the firmware source, version, and recovery method first.

A: 1. Before power-on, short the C6 programming port IO9 to GND. 2. Connect a TTL to the C6 programming port: TX -> RXD (TTL), RX -> TXD (TTL). 3. Before powering on the whole system, press and hold the BOOT button to prevent the ESP32-P4 from controlling the C6 reset. 4. After performing the above steps, you can flash the C6 firmware normally.

Q: Are there example codes for other application scenarios?

A:

  1. During functionality testing, we have validated several features. Some applications, like using a Cat-4 module for network access or using P4's MIPI-DSI to expand the host screen, are progressing but not yet stable enough to release. Once these functionalities are refined, we will add examples to the wiki.
  2. If you have ideas or partially validated application scenarios, feel free to share them with us for feasibility assessment.
Q: Can I develop using PlatformIO or MicroPython?

A:

  1. Due to stability requirements, in order for PlatformIO to support ESP32-P4, it is also necessary for the PlatformIO community to support the Arduino-esp32 SDK V3.1x version
  2. During development, we tested MPY firmware for ESP32-P4, which can run some basic commands. However, this is just a preliminary verification; actual interface and peripheral applications are not yet adapted. Once fully adapted and stable, we will release ESP32-P4 usage examples in MicroPython.