/**
* @brief HRTIM minimal configuration to have snippets running
* HRTIM is clocked and DLL is started
* @param None
* @retval None
*/
static void HRTIM_Minimal_Config(void)
{
/* Use the PLLx2 clock for HRTIM */
__HAL_RCC_HRTIM1_CONFIG(RCC_HRTIM1CLK_PLLCLK);
/* Enable HRTIM clock*/
__HAL_RCC_HRTIM1_CLK_ENABLE();
/* DLL calibration: periodic calibration enabled, period set to 14µs */
HRTIM1->sCommonRegs.DLLCR = HRTIM_CALIBRATIONRATE_14| HRTIM_DLLCR_CALEN;
/* Check DLL end of calibration flag */
while((HRTIM1->sCommonRegs.ISR & HRTIM_IT_DLLRDY) == RESET);
}
/**
* @brief HRTIM configuration at register level (no HAL call)
* @param None
* @retval None
*/
static void HRTIM_Config_NoHAL(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* --------------------------*/
/* HRTIM Input and NVIC init */
/* --------------------------*/
__GPIOA_CLK_ENABLE();
/* Configure HRTIM input: FAULT1 (PA12) */
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;;
GPIO_InitStruct.Alternate = GPIO_AF13_HRTIM1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* Configure and enable HRTIM TIMERA interrupt channel in NVIC */
HAL_NVIC_SetPriority(HRTIM1_TIMA_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(HRTIM1_TIMA_IRQn);
/* --------------------------*/
/* HRTIM Clock and DLL init */
/* --------------------------*/
/* Use the PLLx2 clock for HRTIM */
__HAL_RCC_HRTIM1_CONFIG(RCC_HRTIM1CLK_PLLCLK);
/* Enable HRTIM clock*/
__HRTIM1_CLK_ENABLE();
/* DLL calibration: periodic calibration enabled, period set to 14µs */
HRTIM1->sCommonRegs.DLLCR = HRTIM_CALIBRATIONRATE_14| HRTIM_DLLCR_CALEN;
/* Check DLL end of calibration flag */
while(HRTIM1->sCommonRegs.ISR & HRTIM_IT_DLLRDY == RESET);
/* -------------------------------------------------------- */
/* TIMERA initialization: PWM frequency and Repetition rate */
/* Continuous mode, preload enabled on REP event */
/* -------------------------------------------------------- */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].PERxR = BUCK_PWM_PERIOD; /* 400kHz switching frequency */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].REPxR = 127; /* 1 ISR every 128 PWM periods */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].TIMxCR = HRTIM_TIMCR_CONT
+ HRTIM_TIMCR_PREEN
+ HRTIM_TIMCR_TREPU;
/* Enable REP interrupts */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].TIMxDIER = HRTIM_TIMDIER_REPIE;
/* --------------------------------------------------------------- */
/* TA1 and TA2 waveforms description: Set on period, reset on CMP1 */
/* deadtime enabled, fault1 selected, disabling both outputs */
/* --------------------------------------------------------------- */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].SETx1R = HRTIM_SET1R_PER;
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].RSTx1R = HRTIM_RST1R_CMP1;
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].OUTxR = HRTIM_OUTR_DTEN + HRTIM_OUTR_FAULT1_1 + HRTIM_OUTR_FAULT2_1;
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].FLTxR = HRTIM_FLTR_FLT1EN;
/* Set compare registers for duty cycle on TA1 */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].CMP1xR = BUCK_PWM_PERIOD/20; /* 5% duty cycle */
/* Set deadtime values and lock deadtime signs */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].DTxR = HRTIM_DTR_DTFSLK + (DT_FALLING<<16) + HRTIM_DTR_DTRSLK + DT_RISING;
/* ------------------------------------------- */
/* ADC trigger intialization (with CMP2 event) */
/* ------------------------------------------- */
HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].CMP2xR = BUCK_PWM_PERIOD/10; /* Samples in middle of ON time */
HRTIM1->sCommonRegs.CR1 = HRTIM_CR1_ADC2USRC_0; /* ADC trigger update: TimerA */
HRTIM1->sCommonRegs.ADC2R = HRTIM_ADC2R_AD2TAC2; /* ADC trigger event: Timer A compare 2*/
/* ---------------------------------------------------------- */
/* FAULT1 global init: no filter, low polarity, Fault1 enable */
/* ---------------------------------------------------------- */
HRTIM1->sCommonRegs.FLTINR1 = HRTIM_FLTINR1_FLT1E;
/* ---------------*/
/* HRTIM start-up */
/* ---------------*/
/* Force register update before starting (optional) */
HRTIM1->sCommonRegs.CR2 |= HRTIM_CR2_TASWU;
/* Enable HRTIM's outputs TA1 and TA2 */
/* Note: it is necessary to enable also GPIOs to have outputs functional */
/* This must be done after HRTIM initialization */
HRTIM1->sCommonRegs.OENR = HRTIM_OENR_TA1OEN + HRTIM_OENR_TA2OEN;
/* Start HRTIM's TIMER A */
HRTIM1->sMasterRegs.MCR = HRTIM_MCR_TACEN;
}
