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ESP32-S3-WROOM-1 preferred PINs for I2C and CAN
Posted: Fri Sep 03, 2021 8:23 am
by MartinHaiden
Hello ESP32 Community!
I'd like to use the ESP32-S3 with
I2C and
CAN Bus communications.
Are there
preferred PINs on the ESP32-S3 for this purpose?
Like for SPI (IO9 to IO14).
kind regards,
Martin
Re: ESP32-S3-WROOM-1 preferred PINs for I2C and CAN
Posted: Sat Sep 04, 2021 1:56 am
by ESP_Sprite
No, there are not. You can pick any pin for this (that is not input-only or used for other things like flash).
Re: ESP32-S3-WROOM-1 preferred PINs for I2C and CAN
Posted: Mon Sep 13, 2021 3:36 pm
by dmaxben
ESP_Sprite wrote: ↑Sat Sep 04, 2021 1:56 am
No, there are not. You can pick any pin for this (that is not input-only or used for other things like flash).
Can you use an input-only pin for TWAI-Rx?
Re: ESP32-S3-WROOM-1 preferred PINs for I2C and CAN
Posted: Tue Sep 14, 2021 1:08 am
by ESP_Sprite
You can; it's OK to use input-only pins for input-only functionality. (Thanks for pointing that out, it slipped my mind that CAN has a RX pin before the transceiver.)