Texas Instruments MSP50C6xx manual Main.Cmm

C– – Efficiency

;MAIN.CMM

;Revision 1.00

****************************************************************/

#include ”ram\ram.h”

cmm_func goasm(); // an pseudo main asm routine

cmm_func getSecondsPassed(); // Retrieves the counter maintained

//by the Timer2 ISR and resets the

//counter.

int days=0; int hours=12; int minutes=0; int seconds=0; int ampm=0; /************************************************

/Updates time variables for clock ticks that

/have occured.

************************************************/

cmm_func updateTime(){ seconds=seconds+getSecondsPassed(); while(seconds>59){

seconds=seconds–60;

minutes++;

if(minutes>59){

minutes=0;

hours++;

if (hours == 12){ if(ampm==0){

ampm=1;

}

else{

ampm=0;

days++;

if(days>6){

days=0; }//end days

}

}

if (hours>12){ hours=1; }//end hours

}//end minutes }//end seconds

}

cmm_func main()

{

goasm(); // run any assembly stuff that needs to be run while(1){ // infinite loop

updateTime();

}

}

The include statement at the top of the program is for memory allocation purposes. The C–– compiler is not aware that RAM has been allocated for assembly and must be kept from overwriting it. This is done with an integer array called bogus. The array is set to the size of the RAM allocated for

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