How can i add a PIT or a LPTMR to this code

Dom051 — Sat, 30 Apr 2022 01:41:48 GMT

Hi, I'm trying to add a PIT or LPTMR to make my sawtooth signal 1khz (currently is less than 1hz) im working with a KL25z and dont have much experince

/* p7_4.c: Use DAC to generate sawtooth waveform * The DAC is initialized with no buffer and use software trigger, * so every write to the DAC data registers will change the analog output. * The loop count i is incremented by 0x0010 every loop. The 12-bit DAC * has the range of 0-0x0FFF. Divide 0x1000 by 0x0010 yields 0x0100 or 256. * The sawtooth has 256 steps and each step takes 1 ms. The period of the * waveform is 256 ms and the frequency is about 3.9 Hz. */ void DAC0_init(void); void delayMs(int n); int main (void ){ int i; DAC0_init(); /*configure DAC0*/ while(1){ for(i=0;i<0x1000;i+=0x0010){ DAC0->DAT[0].DATL=i&0xff; /*write low bye*/ DAC0->DAT[0].DATH=(i>>8)&0x0f; /*write high bye*/ delayMs (1); /*delay 1ms*/ } } } void DAC0_init(void){ SIM->SCGC6 |=0x80000000; /*clock to DAC module*/ DAC0->C1=0; /*disble the user of buffer*/ DAC0->C0=0X80|0X20; /*enable DAC and use software trigger*/ } /*Delay n miliseconds *The CPU core clock is set to MCGFLILCLH at 41.94 MHZ in SystemInit(). */ void delayMs (int n){ int i; int j; for(i=0; i<n;i++) for(j=0;j<7000;j++){} }

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How can i add a PIT or a LPTMR to this code

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