Code Composer execution error

Yong Liang

Prodigy 200 points

Other Parts Discussed in Thread: MSP430F5438, MSP430F5438A

when I execute the code in debug mode, a line of code in the Disassembly is not executed.

the register R5(local variable k) should be cleared but it is not.

so the variable k in for loop in not set to 0, the consequense is the for loop is skiped.

Please see the attached screen shots(before the line of code and after the line of code) for details.

The code composer version is 4.2.1.00004. the processor is msp430f5438. Flash code size is >100k

If it helps, We can send our board to TI for investigation.

Thanks for your help!

Regards,

Yong6740.ti_compiler.zip

over 14 years ago

AartiG over 14 years ago

TI__Guru**** 173310 points

Yong,

You may be running into a MSP430F54xx device errata that causes a retrun from a breakpoint to happen with the wrong PC value. Please take a look at EEM6 in the MSP430F543x, MSP430F541x Device Erratasheet

To see if this is really the issue affecting you, try the workaround suggested there. When halted at the breakpoint, manually change the PC value to [(displayed_value) – 2] (via the debugger's CPU register window) then single step and see if it executes the CLR instruction correctly.

PeterO over 14 years ago in reply to AartiG

Intellectual 885 points

Cheers Aarti, from our symptoms I'd say it's likely this is our problem. I've seen in the erratas that this item has been fixed in the MSP430F5438A version of the chip so we are going to order some of these chips for development. We will look into this and let you know the outcome.

PeterO over 14 years ago in reply to PeterO

Intellectual 885 points

We changed to the MSP430F5438A and we are not having this problem anymore. Cheers Aarti. Case closed.

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Code Composer execution error