Cannot set timer period

Hi Zheng,

The timer period registers can not be changed after the timer is enabled (running).

Please see below for an example to configure the timer.

Hope this helps.

Thanks,

Tai

#include <tmr_util.h>

extern volatile Uint32 Tmr_12_Count[],Tmr_34_Count[];
extern volatile Uint32 TmrErrorCount;

#define TMR_NUM 1

Uint32 tmr_doTest()
{
    Uint32 test_result = 0;
    Uint32 intPeriod    = 0x00000400;
    Uint32 testDuration = 0x0000F000;
    Uint32 intExpected = testDuration / intPeriod;

    tmrReset(TMR_NUM);
    TMR_intcInit(TMR_INT_BOTH);

    // Set PERIOD registers
    TMR_REGS[TMR_NUM]->PRD12 = intPeriod;
    TMR_REGS[TMR_NUM]->PRD34 = testDuration;

    // Set up DUAL 32-bit
    CSL_FINST(TMR_REGS[TMR_NUM]->TGCR, TIMER64P_TGCR_TIMMODE, DUAL);
    CSL_FINST(TMR_REGS[TMR_NUM]->TGCR, TIMER64P_TGCR_TIM34RS, NOTINRESET);
    CSL_FINST(TMR_REGS[TMR_NUM]->TGCR, TIMER64P_TGCR_TIM12RS, NOTINRESET);

    if( Tmr_12_Count[TMR_NUM] != 0 ) {
      test_result++;
    }
    if( Tmr_34_Count[TMR_NUM] != 0 ) {
      test_result++;
    }

    // Enable Timer for single-shot
    TMR_REGS[TMR_NUM]->TCR  = CSL_FMKT(TIMER64P_TCR_ENAMODE34, ONCE) |
                              CSL_FMKT(TIMER64P_TCR_ENAMODE12, CONTRESET);

    // Wait for interrupt
    while( Tmr_34_Count[TMR_NUM] == 0 );

    TMR_REGS[TMR_NUM]->TCR  = CSL_FMKT(TIMER64P_TCR_ENAMODE34, DISABLED) |
                              CSL_FMKT(TIMER64P_TCR_ENAMODE12, DISABLED);

    if( Tmr_12_Count[TMR_NUM] < intExpected ) {
      test_result++;
    }

    test_result += TmrErrorCount;

    return test_result;
} // Uint32 tmr_doTest()