ESP-32-C3-MINI-1 default pins

vednus
Posts: 1
Joined: Fri Jan 21, 2022 1:33 am

ESP-32-C3-MINI-1 default pins

Postby vednus » Tue May 24, 2022 10:45 pm

Does anyone know if the new C3-MINI has default pins for SPI and I2C? I can't seem to find it in the datasheet. From what I can gather, spiq and spid correspond to miso and mosi, so from the datasheet, I see that the following corresponds:

MISO = fspiq = io2
MOSI = fspid = io7
SCLK = fspiclk = io6

and a friend told me i2c are io4 and io5. Could someone confirm that? I can't find anything definitive.

Thanks!

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP-32-C3-MINI-1 default pins

Postby ESP_Sprite » Wed May 25, 2022 2:00 am

Those pins sound right for the IOMUX pins of SPI. ESP chips never had IOMUX or default pins for I2C. Do you mean the pins that Arduino uses as default?

MrFreddy
Posts: 3
Joined: Fri Sep 14, 2018 2:56 pm

Re: ESP-32-C3-MINI-1 default pins

Postby MrFreddy » Wed May 25, 2022 8:25 am

I can confirm, that these pins are working on my C3-MINI-1, as you wrote: I2C(4, 5) and SPI(2,7,6)

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