Compiler/TMS320F28377S: TSET instruction does not seem to work.

Dhammika Wijesundera

Part Number: TMS320F28377S

Tool/software: TI C/C++ Compiler

I tried to test the TSET instruction using the following code. I do not see VarA being changed at all. Can someone please help?

Thanks,

Dhammika

-----------------

Uint16 VarA, VarB;

int main(void)
{
    asm("    NOP               ");
    asm("    TSET   @_VarA,#4 ");
    asm("    SB     $10,NTC    ");
    asm("    TSET   @_VarB,#6 ");
    asm("    SB     $20,UNC    ");
    asm("$10:                  ");
    asm("    TCLR   @_VarB,#6 ");
    asm("    NOP               ");
    asm("$20:                  ");

return 0;
}

over 6 years ago

0 Vivek Singh over 6 years ago

TI__Guru** 115411 points

Hi Dhammika,

Can you check the value of VarA before execution of TSET instruction and after execution of TSET instruction in CCS watch window?

Regards,

Vivek Singh

0 Dhammika Wijesundera over 6 years ago in reply to Vivek Singh

Intellectual 645 points

Hi Vivek,

It was 0 before and after execution.

Thanks,

Dhammika

0 Richard Poley over 6 years ago in reply to Dhammika Wijesundera

TI__Mastermind 27200 points

Dhammika,

You have not set the data page pointer. You are using direct addressing to access variables so you will need to add this before the TSET instruction for VarA:

asm(" MOVW DP, #_VarA");

If VarB is on a different data page, you will need to precede those TSET & TCLR operations with a similar instruction.

Regards,

Richard

0 Dhammika Wijesundera over 6 years ago in reply to Richard Poley

Intellectual 645 points

Hi Richard,

That worked. Thanks very much.

Dhammika

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Compiler/TMS320F28377S: TSET instruction does not seem to work.