RE: GPIO shared ID and Custom Board Defines

Simon — Fri, 10 Dec 2021 13:25:57 GMT

If you read the text under Peripherals with shared ID it says the following:

"In general (with the exception of ID 0), peripherals sharing an ID and base address may not be used simultaneously. Only one peripheral can be enabled at a given ID."

If you look at the base addresses of P0 and P1

you can see that the base addresses are different, and it shouldn't be an issue using them simultaneously.

However, for the UARTE, SPI and TWI, it's different:

You can see the that the same instances (id) of the peripherals are sharing the same base address.

Therefore you can't use UARTE0 at the same time as SPIM0, or TWIM2 at the same time as UARTE2, and so on..

Best regards,

Simon