ESP32-PICO-V3-02 Pinout

[mightybenster]

Hi All,
I've been looking at this for hours and my head is going in circles.

I'm trying to design a board using the ESP32-PICO-V3-02 and have been making good progress.
However, I can't figure out the SPI pins.

By my understanding, I2C interface can use any two GPIO available for SDA and SCL.
But which can I use for 4-wire SPI?

None of the pins are annotated MOSI, MISO, SCLK, SS as expected.
I guess it may be VSPICS0, VSPIQ, VSPIWP, VSPIHD.

Please point me in the right direction?
https://www.espressif.com/sites/default ... eet_en.pdf

Thanks

[ESP_LJH]

Hello, when you want to know which GPIO could be used for peripherals, I suggest you to read ESP32 datasheet, module or Sip datasheet may be a simplified version.
As for your question, SPI could also be mapped to any free GPIO pin. But please be noted this freely-map function ( IO-matrix function ) will decrease max clock frequency. If you want to achieve higher frequency, you should look at pin definitions table, then pick up GPIOs with VSPI or HSPI prefix, the ones you post here are OK to be SPI pins.