/**
* @brief HRTIM configuration for checking that HRTIM is up and running
* @param None
* @retval None
*/
static void HRTIM_Config_HRTIMCheck(void)
{
/* ------------------------------------------------- */
/* HRTIM Global initialization: Clock and DLL init */
/* ------------------------------------------------- */
/* Initialize the HRTIM structure (minimal configuration) */
hhrtim.Instance = HRTIM1;
hhrtim.Init.HRTIMInterruptResquests = HRTIM_IT_NONE;
hhrtim.Init.SyncOptions = HRTIM_SYNCOPTION_NONE;
/* Initialize HRTIM */
HAL_HRTIM_Init(&hhrtim);
/* HRTIM DLL calibration: periodic calibration, set period to 14µs */
HAL_HRTIM_DLLCalibrationStart(&hhrtim, HRTIM_CALIBRATIONRATE_14);
/* Wait calibration completion*/
if (HAL_HRTIM_PollForDLLCalibration(&hhrtim, 100) != HAL_OK)
{
Error_Handler(); /* if DLL or clock is not correctly set */
}
/* ---------------*/
/* HRTIM start-up */
/* ---------------*/
/* Enable HRTIM's outputs TD1 */
/* Note: it is necessary to enable also GPIOs to have outputs functional */
/* This must be done after HRTIM initialization */
HAL_HRTIM_WaveformOutputStart(&hhrtim, HRTIM_OUTPUT_TD1);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* STM32F3xx HAL library initialization:
- Configure the Flash prefetch
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to have a system clock = 72 MHz */
SystemClock_Config();
/* Initialize STM32F3348-DISCO LEDs */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
BSP_LED_Init(LED6);
/* Initialize User_Button on STM32F3348-DISCO */
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);
/* Initialize ADC to be triggered by the HRTIMER */
ADC_Config();
/* Initialize HRTIM and related inputs */
HRTIM_Config();
/* Initialize HRTIM outputs (it has to be done after HRTIM init) */
GPIO_HRTIM_outputs_Config();
/* Infinite loop */
while (1)
{
/* ---------------- */
/* Fault management */
/* ---------------- */
while(__HAL_HRTIM_GET_FLAG(&hhrtim, HRTIM_FLAG_FLT1) == SET)
{
/* LED3 is flashing in case of fault */
BSP_LED_On(LED3);
HAL_Delay(20);
BSP_LED_Off(LED3);
HAL_Delay(80);
/* Re-arm HRTIM TD1 output if "User" push button is pressed*/
if((BSP_PB_GetState(BUTTON_USER) == SET))
{
__HAL_HRTIM_CLEAR_IT(&hhrtim, HRTIM_IT_FLT1);
HAL_HRTIM_WaveformOutputStart(&hhrtim, HRTIM_OUTPUT_TD1);
}
}
/* ---------------- */
/* Normal operation */
/* ---------------- */
/* LED6 toggling to show MCU activity */
BSP_LED_On(LED6);
HAL_Delay(100);
BSP_LED_Off(LED6);
HAL_Delay(400);
/* -------------------------------------------------------------------- */
/* ADC monitoring (to be viewed with watch) */
/* PA4 can be connected to the RC filter or any voltage to be monitored */
/* -------------------------------------------------------------------- */
ADCReadout = HAL_ADCEx_InjectedGetValue(&AdcHandle, ADC_INJECTED_RANK_1);
}
}
/**
* @brief HRTIM configuration
* @param None
* @retval None
*/
static void HRTIM_Config(void)
{
HRTIM_TimeBaseCfgTypeDef timebase_config;
HRTIM_TimerCfgTypeDef timer_config;
HRTIM_OutputCfgTypeDef output_config_TD1;
HRTIM_OutputCfgTypeDef output_config_TD2;
HRTIM_CompareCfgTypeDef compare_config;
HRTIM_ADCTriggerCfgTypeDef adc_trigger_config;
HRTIM_FaultCfgTypeDef fault_config;
/* ----------------------------*/
/* HRTIM Global initialization */
/* ----------------------------*/
/* Initialize the HRTIM structure (minimal configuration) */
hhrtim.Instance = HRTIM1;
hhrtim.Init.HRTIMInterruptResquests = HRTIM_IT_NONE;
hhrtim.Init.SyncOptions = HRTIM_SYNCOPTION_NONE;
/* Initialize HRTIM */
HAL_HRTIM_Init(&hhrtim);
/* HRTIM DLL calibration: periodic calibration, set period to 14µs */
HAL_HRTIM_DLLCalibrationStart(&hhrtim, HRTIM_CALIBRATIONRATE_14);
/* Wait calibration completion*/
if (HAL_HRTIM_PollForDLLCalibration(&hhrtim, 100) != HAL_OK)
{
Error_Handler(); // if DLL or clock is not correctly set
}
/* --------------------------------------------------- */
/* TIMERD initialization: timer mode and PWM frequency */
/* --------------------------------------------------- */
timebase_config.Period = BUCK_PWM_PERIOD;// 100kHz switching frequency
timebase_config.RepetitionCounter = 3;
timebase_config.PrescalerRatio = HRTIM_PRESCALERRATIO_MUL32;
timebase_config.Mode = HRTIM_MODE_CONTINUOUS;
HAL_HRTIM_TimeBaseConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_D, &timebase_config);
/* --------------------------------------------------------------------- */
/* TIMERD global configuration: cnt reset, sync, update, fault, burst... */
/* --------------------------------------------------------------------- */
timer_config.DMARequests = HRTIM_TIM_DMA_NONE;
timer_config.DMASrcAddress = 0x0;
timer_config.DMADstAddress = 0x0;
timer_config.DMASize = 0x0;
timer_config.HalfModeEnable = HRTIM_HALFMODE_DISABLED;
timer_config.StartOnSync = HRTIM_SYNCSTART_DISABLED;
timer_config.ResetOnSync = HRTIM_SYNCRESET_DISABLED;
timer_config.DACSynchro = HRTIM_DACSYNC_NONE;
timer_config.PreloadEnable = HRTIM_PRELOAD_ENABLED;
timer_config.UpdateGating = HRTIM_UPDATEGATING_INDEPENDENT;
timer_config.BurstMode = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK;
timer_config.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED;
timer_config.ResetUpdate = HRTIM_TIMUPDATEONRESET_DISABLED;
timer_config.InterruptRequests = HRTIM_TIM_IT_REP;
timer_config.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED;
timer_config.FaultEnable = HRTIM_TIMFAULTENABLE_FAULT1;
timer_config.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE;
timer_config.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_DISABLED;
timer_config.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED;
timer_config.UpdateTrigger= HRTIM_TIMUPDATETRIGGER_NONE;
timer_config.ResetTrigger = HRTIM_TIMRESETTRIGGER_NONE;
HAL_HRTIM_WaveformTimerConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_D,&timer_config);
/* --------------------------------- */
/* TD1 and TD2 waveforms description */
/* --------------------------------- */
output_config_TD1.Polarity = HRTIM_OUTPUTPOLARITY_HIGH;
output_config_TD1.SetSource = HRTIM_OUTPUTSET_TIMPER;
output_config_TD1.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1;
output_config_TD1.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;
output_config_TD1.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;
output_config_TD1.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_INACTIVE;
output_config_TD1.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;
output_config_TD1.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;
HAL_HRTIM_WaveformOutputConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_OUTPUT_TD1,
&output_config_TD1);
output_config_TD2.Polarity = HRTIM_OUTPUTPOLARITY_HIGH;
output_config_TD2.SetSource = HRTIM_OUTPUTSET_TIMCMP2;
output_config_TD2.ResetSource = HRTIM_OUTPUTRESET_TIMPER;
output_config_TD2.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;
output_config_TD2.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;
output_config_TD2.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_NONE;
output_config_TD2.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;
output_config_TD2.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;
HAL_HRTIM_WaveformOutputConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_OUTPUT_TD2,
&output_config_TD2);
/* Set compare registers for duty cycle on TD1 */
compare_config.CompareValue = BUCK_PWM_PERIOD/20; // 5% duty cycle
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_1,
&compare_config);
/* Set compare registers for duty cycle on TD2 */
compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
compare_config.AutoDelayedTimeout = 0;
compare_config.CompareValue = BUCK_PWM_PERIOD - (BUCK_PWM_PERIOD/3); // 33% duty cycle (NB: from CMP2 to period)
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_2,
&compare_config);
/* --------------------------------------------------- */
/* ADC trigger intialization (CMP3 and CMP4 registers) */
/* --------------------------------------------------- */
/* Set compare 3 registers for 1st ADC trigger */
compare_config.CompareValue = BUCK_PWM_PERIOD/10; // samples in middle of duty cycle (NB: from CMP2 to period)
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_3,
&compare_config);
/* Set compare 4 registers for 2nd ADC trigger */
compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
compare_config.AutoDelayedTimeout = 0;
compare_config.CompareValue = (BUCK_PWM_PERIOD - ((BUCK_PWM_PERIOD/3)/2)); // samples in middle of duty cycle
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_4,
&compare_config);
adc_trigger_config.Trigger = HRTIM_ADCTRIGGEREVENT24_TIMERD_CMP3 + HRTIM_ADCTRIGGEREVENT24_TIMERD_CMP4;
adc_trigger_config.UpdateSource = HRTIM_ADCTRIGGERUPDATE_TIMER_D;
HAL_HRTIM_ADCTriggerConfig(&hhrtim,
HRTIM_ADCTRIGGER_2,
&adc_trigger_config);
/* ---------------------*/
/* FAULT initialization */
/* ---------------------*/
fault_config.Filter = HRTIM_FAULTFILTER_NONE;
fault_config.Lock = HRTIM_FAULTLOCK_READWRITE;
fault_config.Polarity = HRTIM_FAULTPOLARITY_LOW;
fault_config.Source = HRTIM_FAULTSOURCE_DIGITALINPUT;
HAL_HRTIM_FaultConfig(&hhrtim,
HRTIM_FAULT_1,
&fault_config);
HAL_HRTIM_FaultModeCtl(&hhrtim,
HRTIM_FAULT_1,
HRTIM_FAULTMODECTL_ENABLED);
/* ---------------*/
/* HRTIM start-up */
/* ---------------*/
/* Enable HRTIM's outputs TD1 and TD2 */
/* Note: it is necessary to enable also GPIOs to have outputs functional */
/* This must be done after HRTIM initialization */
HAL_HRTIM_WaveformOutputStart(&hhrtim, HRTIM_OUTPUT_TD1 | HRTIM_OUTPUT_TD2);
/* Start HRTIM's TIMER D*/
HAL_HRTIM_WaveformCounterStart_IT(&hhrtim, HRTIM_TIMERID_TIMER_D);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/* STM32F3xx HAL library initialization:
- Configure the Flash prefetch
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to have a system clock = 72 MHz */
SystemClock_Config();
/* Initialize STM32F3348-DISCO LEDs */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
BSP_LED_Init(LED6);
/* Initialize User_Button on STM32F3348-DISCO */
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_GPIO);
/* Initialize ADC to be triggered by the HRTIMER */
ADC_Config();
/* Initialize HRTIM and related inputs */
#ifdef SNIPPET
HRTIM_Config_NoHAL();
#else
HRTIM_Config();
#endif
/* Initialize BUCK outputs (it has to be done after HRTIM init) */
GPIO_BUCK_outputs_Config();
/* Turn ON T6 MOSFET on discovery board */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_SET);
/* Infinite loop */
while (1)
{
/* ---------------- */
/* Fault management */
/* ---------------- */
#ifdef SNIPPET
/* If Fault occured */
while(HRTIM1->sCommonRegs.ISR & HRTIM_ICR_FLT1C)
{
/* LED3 is flashing in case of fault */
BSP_LED_On(LED3);
HAL_Delay(20);
BSP_LED_Off(LED3);
HAL_Delay(80);
/* Re-arm HRTIM TD1 output if "User" push button is pressed*/
if((BSP_PB_GetState(BUTTON_USER) == SET))
{
/* Clear interrupt flag */
HRTIM1->sCommonRegs.ICR = HRTIM_ICR_FLT1C;
/* Re-enable TA1 and TA2 */
HRTIM1->sCommonRegs.OENR = HRTIM_OENR_TA1OEN + HRTIM_OENR_TA2OEN;
}
}
#else
while(__HAL_HRTIM_GET_FLAG(&hhrtim, HRTIM_FLAG_FLT1) == SET)
{
/* LED3 is flashing in case of fault */
BSP_LED_On(LED3);
HAL_Delay(20);
BSP_LED_Off(LED3);
HAL_Delay(80);
/* Re-arm HRTIM TD1 output if "User" push button is pressed*/
if((BSP_PB_GetState(BUTTON_USER) == SET))
{
__HAL_HRTIM_CLEAR_IT(&hhrtim, HRTIM_IT_FLT1);
HAL_HRTIM_WaveformOutputStart(&hhrtim, HRTIM_OUTPUT_TA1 | HRTIM_OUTPUT_TA2);
}
}
#endif
/* ---------------- */
/* Normal operation */
/* ---------------- */
/* LED6 toggling to show MCU activity */
BSP_LED_On(LED6);
HAL_Delay(100);
BSP_LED_Off(LED6);
HAL_Delay(400);
/* -----------------------------------------------------------------------*/
/* Input and output voltages can be displayed real-time in a watch window */
/* -----------------------------------------------------------------------*/
Vin = (HAL_ADCEx_InjectedGetValue(&AdcHandle, ADC_INJECTED_RANK_1) * ADC_VREF)/0x1000;
/* VIN bridge conversion is 4.97 (6.8K / 6.8K + 27K) */
Vin = (497 * Vin )/100;
Vout = (HAL_ADCEx_InjectedGetValue(&AdcHandle, ADC_INJECTED_RANK_2) * ADC_VREF)/0x1000;
/* VOUT bridge conversion is 5.03 (3.3K / 3.3K + 13.3K) */
Vout = (503 * Vout)/100;
}
}
/**
* @brief HRTIM configuration for generating an arbitrary waveform
* @param None
* @retval None
*/
static void HRTIM_Config_ArbitraryWaveform(void)
{
HRTIM_TimeBaseCfgTypeDef timebase_config;
HRTIM_TimerCfgTypeDef timer_config;
HRTIM_OutputCfgTypeDef output_config_TDx;
HRTIM_CompareCfgTypeDef compare_config;
/* ----------------------------------------------- */
/* HRTIM Global initialization: Clock and DLL init */
/* ----------------------------------------------- */
/* Initialize the HRTIM structure (minimal configuration) */
hhrtim.Instance = HRTIM1;
hhrtim.Init.HRTIMInterruptResquests = HRTIM_IT_NONE;
hhrtim.Init.SyncOptions = HRTIM_SYNCOPTION_NONE;
/* Initialize HRTIM */
HAL_HRTIM_Init(&hhrtim);
/* HRTIM DLL calibration: periodic calibration, set period to 14µs */
HAL_HRTIM_DLLCalibrationStart(&hhrtim, HRTIM_CALIBRATIONRATE_14);
/* Wait calibration completion*/
if (HAL_HRTIM_PollForDLLCalibration(&hhrtim, 100) != HAL_OK)
{
Error_Handler(); /* if DLL or clock is not correctly set */
}
/* ------------------------------------------------------------ */
/* TIMERD initialization: set PWM frequency and continuous mode */
/* ------------------------------------------------------------ */
timebase_config.Period = _100KHz_PERIOD;
timebase_config.RepetitionCounter = 0;
timebase_config.PrescalerRatio = HRTIM_PRESCALERRATIO_MUL32;
timebase_config.Mode = HRTIM_MODE_CONTINUOUS;
HAL_HRTIM_TimeBaseConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_D, &timebase_config);
/* --------------------------------------------------------- */
/* TIMERD global configuration: preload enabled on REP event */
/* --------------------------------------------------------- */
timer_config.DMARequests = HRTIM_TIM_DMA_NONE;
timer_config.HalfModeEnable = HRTIM_HALFMODE_DISABLED;
timer_config.StartOnSync = HRTIM_SYNCSTART_DISABLED;
timer_config.ResetOnSync = HRTIM_SYNCRESET_DISABLED;
timer_config.DACSynchro = HRTIM_DACSYNC_NONE;
timer_config.PreloadEnable = HRTIM_PRELOAD_ENABLED;
timer_config.UpdateGating = HRTIM_UPDATEGATING_INDEPENDENT;
timer_config.BurstMode = HRTIM_TIMERBURSTMODE_MAINTAINCLOCK;
timer_config.RepetitionUpdate = HRTIM_UPDATEONREPETITION_ENABLED;
timer_config.ResetUpdate = HRTIM_TIMUPDATEONRESET_DISABLED;
timer_config.InterruptRequests = HRTIM_TIM_IT_NONE;
timer_config.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED;
timer_config.FaultEnable = HRTIM_TIMFAULTENABLE_NONE;
timer_config.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE;
timer_config.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_DISABLED;
timer_config.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED;
timer_config.UpdateTrigger= HRTIM_TIMUPDATETRIGGER_NONE;
timer_config.ResetTrigger = HRTIM_TIMRESETTRIGGER_NONE;
HAL_HRTIM_WaveformTimerConfig(&hhrtim, HRTIM_TIMERINDEX_TIMER_D,&timer_config);
/* --------------------------------------------------------------------- */
/* TD1 waveform description: toggles on TIMD period, CMP1 and CMP2 event */
/* --------------------------------------------------------------------- */
output_config_TDx.Polarity = HRTIM_OUTPUTPOLARITY_HIGH;
output_config_TDx.SetSource = HRTIM_OUTPUTSET_TIMPER + HRTIM_OUTPUTSET_TIMCMP1 + HRTIM_OUTPUTSET_TIMCMP2;
output_config_TDx.ResetSource = HRTIM_OUTPUTRESET_TIMPER + HRTIM_OUTPUTRESET_TIMCMP1 + HRTIM_OUTPUTRESET_TIMCMP2;
output_config_TDx.IdleMode = HRTIM_OUTPUTIDLEMODE_NONE;
output_config_TDx.IdleLevel = HRTIM_OUTPUTIDLELEVEL_INACTIVE;
output_config_TDx.FaultLevel = HRTIM_OUTPUTFAULTLEVEL_NONE;
output_config_TDx.ChopperModeEnable = HRTIM_OUTPUTCHOPPERMODE_DISABLED;
output_config_TDx.BurstModeEntryDelayed = HRTIM_OUTPUTBURSTMODEENTRY_REGULAR;
HAL_HRTIM_WaveformOutputConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_OUTPUT_TD1,
&output_config_TDx);
/* ------------------------------------------------------ */
/* TD2 waveform description: set on TIMD PER and CMP2 and */
/* reset on TIMD CMP1 and CMP3 event */
/* Note: TDx init structure is re-used */
/* ------------------------------------------------------ */
output_config_TDx.SetSource = HRTIM_OUTPUTSET_TIMPER + HRTIM_OUTPUTSET_TIMCMP2;
output_config_TDx.ResetSource = HRTIM_OUTPUTRESET_TIMCMP1 + HRTIM_OUTPUTRESET_TIMCMP3;
HAL_HRTIM_WaveformOutputConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_OUTPUT_TD2,
&output_config_TDx);
/* Set compare register 1 in Timer D */
compare_config.CompareValue = _100KHz_PERIOD/4; /* 25% of the period */
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_1,
&compare_config);
/* Set compare register 2 in Timer D */
compare_config.AutoDelayedMode = HRTIM_AUTODELAYEDMODE_REGULAR;
compare_config.AutoDelayedTimeout = 0;
compare_config.CompareValue = (3*_100KHz_PERIOD)/8; /* 37.5% of the period */
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_2,
&compare_config);
/* Set compare register 3 in Timer D */
compare_config.CompareValue = _100KHz_PERIOD/2; /* 50% of the period */
HAL_HRTIM_WaveformCompareConfig(&hhrtim,
HRTIM_TIMERINDEX_TIMER_D,
HRTIM_COMPAREUNIT_3,
&compare_config);
/* ---------------*/
/* HRTIM start-up */
/* ---------------*/
/* Enable HRTIM's outputs TD1 and TD2 */
/* Note: it is necessary to enable also GPIOs to have outputs functional */
/* This must be done after HRTIM initialization */
HAL_HRTIM_WaveformOutputStart(&hhrtim, HRTIM_OUTPUT_TD1 + HRTIM_OUTPUT_TD2);
/* Start HRTIM's TIMER D */
HAL_HRTIM_WaveformCounterStart(&hhrtim, HRTIM_TIMERID_TIMER_D);
}