Can I save MSP430 CRC registers during FreeRTOS context switch?

Question

I am using MSP430F5418 with FreeRTOS 7 in medium data model.

I want to save the MSP CRC registers on FreeRTOS context switch. I edited the portext.s43 like this.

In save context macro, after pushing 15 registers to stack, I push the CRC registers. (CRCDI is the MSP register to save)

mov.w CRCD1, r15 
pushx.a r15

In restore context macro, I poped the CRC just before poping the 15 registers.

popx.a r15
mov.w r15, CRCDI

It is supposed to be working , but it is not. The program control is going to unknow location.

Anybody have any Idea?

Answer 1

I don't know why people ask FreeRTOS support questions on forums other than the free and active FreeRTOS support request forum. It makes my life difficult though.

I have answered your question here: https://sourceforge.net/projects/freertos/forums/forum/382005/topic/5367023