The relationship between CAN RXSEL function and PORT IOCR register

[Charlie9527]

When using CAN register RXSEL to control the ports of P10.2 and P10.3 as CAN02 function:

(1) Does the configuration of RXSEL affect the value of PORTS register, such as the IOCR register of PORTS ?

(2) What happens if there is another program to modify the port configuration of P10.2 and P10.3?

[Di_W · Accepted solution]

Hi Charlie,

For (1) , there is a sequence to call setPinMode function and set IOCR register finnally. Please refer to below:

For(2), the programmer should take care of the pin define in the whole project. If another function or task do some pin operations for P10.2/P10.3, the CAN node pins function could be override and leads unknown behavior.

dw