Using IAR in assembly language How to do Set or EQU

bigM

Intellectual 680 points

I am using IAR to do assembly programming on aN MSP430G device.

How do I setup an instruction for SET or EQU?

I want to set R15 to be named PERIOD. MY CODE IS: PERIOD EQU R15 With no spaces preceding the word PERIOD.

IS THIS CODE OK OR DOES IT NEED TO BE PRECEDED BY SOMETHING??

over 12 years ago

0 bigM over 12 years ago

Intellectual 680 points

cannot rename the registers

0 Brian Boorman over 12 years ago

Guru 25210 points

Take a look at the macro processing capability of the IAR assembler. It is described in the documentation that comes with IAR, specifically: EW430_AssemblerReference.pdf

0 old_cow_yellow over 12 years ago in reply to bigM

Guru 58965 points

BigM,

Both SET and EQU are used to assign values. I think (guess) you are actuarially trying to assign symbols. In that case, the IAR Assembler can use c-style pre-processor to do what you want. For example:

#define PERIOD R15
#define PERIOD &howlong
#define PERIOD &TACCR0

You could use one of the above, where the alternatives are: R15 is a CPU register, howlong is a static variable, and TACCR0 is a peripheral hardware register..

-- OCY

0 Jens-Michael Gross over 12 years ago in reply to bigM

Guru 227245 points

Also see your other thread
http://e2e.ti.com/support/microcontrollers/msp430/f/166/p/331027/1153844.aspx

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Using IAR in assembly language How to do Set or EQU