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CCS/IWR6843: Tic Toc Timer process

Part Number: IWR6843

Tool/software: Code Composer Studio

Sample Src

(ti\mmwave_industrial_toolbox_4_3_1\labs\people_counting\68xx_Sense_and_Direct_HVAC_Control\src\mss\gtrack\test\common\gtrackApp.c)

as below
---------------------------------------------------------------------------------------------------------------------------------
Cycleprofiler_init();
gtrackStartTime = gtrack_getCycleCount();  /*Set Start Time*/

for(n=0; n<1000; n++) {
/* one milisecond */
SOC_microDelay(1000);
}

cyclesPerSecond = gtrack_getCycleCount() - gtrackStartTime;

/*END Time - START Time = process Time*/
System_printf("Calibration: 1 seconds is %u Cycless\n", cyclesPerSecond);

/*display process time*/

Question !

Timer doesnot work precess time value = 0
Please tell me what to do