void LETIMER_setup(void)
{
/* Enabling the required clocks */
CMU_ClockSelectSet(cmuClock_LFA, cmuSelect_ULFRCO); //Selecting the ULFRCO as the source clock
CMU_ClockEnable(cmuClock_LETIMER0, true); //Enable the clock input to LETIMER
/* Set the compare values for COMP0 */
LETIMER_CompareSet(LETIMER0, 0,PERIOD/ULFRCO_COUNT);
/* Configure the LETIMER0 */
LETIMER_Init_TypeDef letimerInit = LETIMER_INIT_DEFAULT;
// {
// .enable = true, /* Default: Start counting when init completed. */
// .debugRun = false, /* Default: Counter shall not keep running during debug halt. */
// .rtcComp0Enable = false, /* Default: Don't start counting on RTC COMP0 match. */
// .rtcComp1Enable = false, /* Default: Don't start counting on RTC COMP1 match. */
// .comp0Top = true, /* Load COMP0 register into CNT when counter underflows. COMP0 is used as TOP */
// .bufTop = false, /* Default: Don't load COMP1 into COMP0 when REP0 reaches 0. */
// .out0Pol = 0, /* Default: Idle value for output 0. */
// .out1Pol = 0, /* Default: Idle value for output 1. */
// .ufoa0 = letimerUFOANone, /* Default : No action on underfow on Output 0*/
// .ufoa1 = letimerUFOANone, /* Default : No action on underfow on Output 1*/
// .repMode = letimerRepeatFree /* Default: Count until stopped */
// };
letimerInit.comp0Top= true, /* Default: Start counting when init completed. */
/* Initialize LETIMER with the values above */
LETIMER_Init(LETIMER0, &letimerInit);
}
/***************************************************************************//**
* @brief
* Set the LETIMER top value.
*
* @note
* The LETIMER is a down-counter, so when the counter reaches 0 then the top
* value will be loaded into the counter. This function can be used to set
* the top value.
*
* If the LETIMER is not already configured to use a top value then this
* function will enable that functionality for the user.
*
* @param[in] letimer
* A pointer to the LETIMER peripheral register block.
*
* @param[in] value
* The top value. This can be a 16 bit value on series-0 and series-1 devices
* and a 24 bit value on series-2 devices.
******************************************************************************/
void LETIMER_TopSet(LETIMER_TypeDef *letimer, uint32_t value)
{
LETIMER_SyncWait(letimer);
#if defined(_LETIMER_TOP_MASK)
/* Make sure TOP value is enabled. */
if ((letimer->CTRL & LETIMER_CTRL_CNTTOPEN) == 0U) {
letimer->CTRL_SET = LETIMER_CTRL_CNTTOPEN;
}
letimer->TOP = value;
#else
/* Make sure TOP value is enabled. */
if ((letimer->CTRL & LETIMER_CTRL_COMP0TOP) == 0U) {
letimer->CTRL |= LETIMER_CTRL_COMP0TOP;
}
LETIMER_CompareSet(letimer, 0, value);
#endif
}
