Pin Multiplexing for both versions | Seeed Studio Wiki

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Pin Multiplexing for both versions | Seeed Studio Wiki

Pin Multiplexing on Seeed Studio XIAO nRF52840 (Sense)

https://wiki.seeedstudio.com/XIAO-BLE-Sense-Pin-Multiplexing/

[kjkent]

The I2C guide here shows no external pullups connected on SDA or SCL -- does the XIAO nRF52840 Sense have internal pullups?

I'm trying to use I2C on CircuitPython, but I'm receiving the error:

Adafruit CircuitPython 8.2.4 on 2023-08-22; Seeed XIAO nRF52840 Sense with nRF52840
>>> import time
>>> import board
>>> i2c = board.I2C()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
RuntimeError: No pull up found on SDA or SCL; check your wiring

[xzxcessarr]

Hello, you can use this way to set your I2C pins at software level by the bitbangio library :
import board import bitbangio I2C=bitbangio.I2C(board.A1, board.A2)

[rkvaw]

Could we redefine SPI to other Pins of the Xiao nRF52840 pins
for example : SDI -> pin 3, SDO -> pin4, SCK -> pin5, CS -> pin9