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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 determine my ESP32-P4 chip revision?

A: Check the silkscreen marking on the chip and the boot log from the serial port. 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, make sure the firmware configuration matches the actual chip revision.

Q: I get a chip revision mismatch error when flashing. How do I fix it?

A: This message means the firmware's ESP32-P4 chip revision configuration doesn't match the chip on your board. Do not use --force to skip the check — rebuild with the correct chip revision instead.

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 sample: config/esp32p4_rev_pre_v3.defaults

Specify the matching config in the example directory via SDKCONFIG_DEFAULTS. See the detailed instructions under ESP-IDF examples.

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

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

The ESP32-C6 ships with factory firmware. Please verify the firmware source, version, and recovery method first.

A: When powering on, pull C6_IO9 pin low (to put the C6 into download mode) , and also put the P4 into download mode. Then you can flash firmware to the C6 via the C6_U0RXD and C6_U0TXD pins.

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.