CCS/MSP430F5529: How to write OnHalt() with a GEL file

rafael rodrigues

Part Number: MSP430F5529

Tool/software: Code Composer Studio

I'm on CCS7 using the MSP430F5529LP. My code generates 6-PWM (Timer A compare outputs) to a DRV boosterpack. Suspending the program to debug causes the out pin go on low or high level depending on the moment of halt. How could I pull down an output pin after halt MSP430? I know there are solutions to perform this on C2000 family like a real time debug, EMUSTOP, etc, but none of this apply to MSP430. I'm trying to solve this issue with GEL files after reading spraa74a.pdf and wiki. The myGel.gel was selected on the advanced tab of .cxml, so I've followed the steps: build project, debug, resume... error message:

The content of myGel.gel:

OnHalt()
{
P1OUT &= ~(BIT2 + BIT3 + BIT4 + BIT5);
P2OUT &= ~(BIT4 + BIT5);
}

The error message shown after suspend:

MSP430: GEL: Error while executing OnHalt(): identifier not found: P1OUT at (P1OUT&=~((((BIT2+BIT3)+BIT4)+BIT5))) [myGel.gel:3] at OnHalt()

over 7 years ago

0 Ki over 7 years ago

TI__Guru**** 463481 points

Hello,
The GEL expression evaluator is not able to resolve P1OUT when the GEL file is parsed. I believe you need to have the symbols loaded that have P1OUT defined before loading the GEL file. Having the gel file defined in the ccxml file will autoload the GEL file when the debugger is launched.

Thanks
ki

0 rafael rodrigues over 7 years ago in reply to Ki

Prodigy 60 points

You're right, Ki-Soo Lee. I've found a tread that help me with the question you arised:

e2e.ti.com/.../1201502

So, I changed my code in myGel.gel:

#define PAOUT_L *(unsigned char *) 0x0202 // copied from msp430f5529.cmd and msp430f5529.h
#define PAOUT_H *(unsigned char *) 0x0203
#define P1OUT (PAOUT_L) /* Port 1 Output */
#define P2OUT (PAOUT_H) /* Port 2 Output */
#define BIT2 (0x0004)
#define BIT3 (0x0008)
#define BIT4 (0x0010)
#define BIT5 (0x0020)

OnHalt()
{
P1OUT &= ~(BIT2 + BIT3 + BIT4 + BIT5);
P2OUT &= ~(BIT4 + BIT5);
}

But it still doesn't work.

0 Ki over 7 years ago in reply to rafael rodrigues

TI__Guru**** 463481 points

What is the error/issue you see now?

0 rafael rodrigues over 7 years ago in reply to Ki

Prodigy 60 points

This time there's no error on the Console tab but the PWM outputs doesn't go down on halt.

0 Ki over 7 years ago in reply to rafael rodrigues

TI__Guru**** 463481 points

I can't provide much suggestions on that part as I don't have enough expertise of the device to comment. I suggest checking with the experts in the MSP forum for more input.

Thanks
ki

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CCS/MSP430F5529: How to write OnHalt() with a GEL file