SPI problem

2025-02-23 20:36:27 Ask

I'm trying to run an esp32 zero with a ST7735 spi display with the Ucglib libs. But if I set the software SPI it works (very slow), with the hardware SPI it doesn't work, I connected the MOSI SPI pins to GP7 and SCK to GP6. I tried other combinations but they don't work. Is it possible that there is no technical documentation that says which SPI pins to use? Thanks Andrea

SPI ST7735 esp32 zero Ucglib MOSI SCK

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SpotPearGuest0398d

Answer time:2025-02-24 11:21:16

https://spotpear.com/wiki/ESP32-C3-Zero.html#Resource

View the link, which contains the document we provided

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SpotPearGuest22739

Answer time:2025-02-26 18:13:33

Testing the pins using a test program and an oscilloscope, I found the following PINs, and now the display works properly:

SCK -> GP4

MISO ->GP5

MOSI -> GP6

Thanks to me !

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