/**
* @brief Comparator IRQ handler.
* @param hcomp COMP handle
* @retval None
*/
void HAL_COMP_IRQHandler(COMP_HandleTypeDef *hcomp)
{
/* Get the EXTI line corresponding to the selected COMP instance */
uint32_t exti_line = COMP_GET_EXTI_LINE(hcomp->Instance);
/* Check COMP EXTI flag */
if(LL_EXTI_IsActiveFlag_0_31(exti_line) != RESET)
{
/* Check whether comparator is in independent or window mode */
if(READ_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE) != RESET)
{
/* Clear COMP EXTI line pending bit of the pair of comparators */
/* in window mode. */
/* Note: Pair of comparators in window mode can both trig IRQ when */
/* input voltage is changing from "out of window" area */
/* (low or high ) to the other "out of window" area (high or low).*/
/* Both flags must be cleared to call comparator trigger */
/* callback is called once. */
LL_EXTI_ClearFlag_0_31((COMP_EXTI_LINE_COMP1 | COMP_EXTI_LINE_COMP2));
}
else
{
/* Clear COMP EXTI line pending bit */
LL_EXTI_ClearFlag_0_31(exti_line);
}
/* COMP trigger user callback */
HAL_COMP_TriggerCallback(hcomp);
}
}
/**
* @brief This function handles external line 15_10 interrupt request.
* @param None
* @retval None
*/
void USER_BUTTON_IRQHANDLER(void)
{
/* Manage Flags */
if(LL_EXTI_IsActiveFlag_0_31(USER_BUTTON_EXTI_LINE) != RESET)
{
/* Call interruption treatment function */
UserButton_Callback();
/* Clear EXTI line flag */
/* Note: Clear flag after callback function to minimize user button */
/* switch debounce parasitics. */
LL_EXTI_ClearFlag_0_31(USER_BUTTON_EXTI_LINE);
}
}
void rtc_stm32_isr(void *arg)
{
struct device *const dev = (struct device *)arg;
if (LL_RTC_IsActiveFlag_ALRA(RTC) != 0) {
if (DEV_DATA(dev)->cb_fn != NULL) {
DEV_DATA(dev)->cb_fn(dev);
}
LL_RTC_ClearFlag_ALRA(RTC);
LL_RTC_DisableIT_ALRA(RTC);
}
LL_EXTI_ClearFlag_0_31(EXTI_LINE);
}
/**
* @brief Initialize the COMP according to the specified
* parameters in the COMP_InitTypeDef and initialize the associated handle.
* @note If the selected comparator is locked, initialization can't be performed.
* To unlock the configuration, perform a system reset.
* @param hcomp COMP handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{
uint32_t tmp_csr = 0U;
uint32_t exti_line = 0U;
uint32_t comp_voltage_scaler_not_initialized = 0U;
__IO uint32_t wait_loop_index = 0U;
HAL_StatusTypeDef status = HAL_OK;
/* Check the COMP handle allocation and lock status */
if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
{
status = HAL_ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
assert_param(IS_COMP_INPUT_PLUS(hcomp->Instance, hcomp->Init.NonInvertingInput));
assert_param(IS_COMP_INPUT_MINUS(hcomp->Instance, hcomp->Init.InvertingInput));
assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
assert_param(IS_COMP_POWERMODE(hcomp->Init.Mode));
assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
assert_param(IS_COMP_BLANKINGSRC_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce));
assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
if(hcomp->State == HAL_COMP_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hcomp->Lock = HAL_UNLOCKED;
/* Init SYSCFG and the low level hardware to access comparators */
/* Note: HAL_COMP_Init() calls __HAL_RCC_SYSCFG_CLK_ENABLE() */
/* to enable internal control clock of the comparators. */
/* However, this is a legacy strategy. In future STM32 families, */
/* COMP clock enable must be implemented by user */
/* in "HAL_COMP_MspInit()". */
/* Therefore, for compatibility anticipation, it is recommended */
/* to implement __HAL_RCC_SYSCFG_CLK_ENABLE() */
/* in "HAL_COMP_MspInit()". */
__HAL_RCC_SYSCFG_CLK_ENABLE();
/* Init the low level hardware */
HAL_COMP_MspInit(hcomp);
}
/* Memorize voltage scaler state before initialization */
comp_voltage_scaler_not_initialized = (READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) == 0);
/* Set COMP parameters */
tmp_csr = ( hcomp->Init.NonInvertingInput
| hcomp->Init.InvertingInput
| hcomp->Init.BlankingSrce
| hcomp->Init.Hysteresis
| hcomp->Init.OutputPol
| hcomp->Init.Mode
);
/* Set parameters in COMP register */
/* Note: Update all bits except read-only, lock and enable bits */
#if defined (COMP_CSR_INMESEL)
MODIFY_REG(hcomp->Instance->CSR,
COMP_CSR_PWRMODE | COMP_CSR_INMSEL | COMP_CSR_INPSEL |
COMP_CSR_WINMODE | COMP_CSR_POLARITY | COMP_CSR_HYST |
COMP_CSR_BLANKING | COMP_CSR_BRGEN | COMP_CSR_SCALEN | COMP_CSR_INMESEL,
tmp_csr
);
#else
MODIFY_REG(hcomp->Instance->CSR,
COMP_CSR_PWRMODE | COMP_CSR_INMSEL | COMP_CSR_INPSEL |
COMP_CSR_WINMODE | COMP_CSR_POLARITY | COMP_CSR_HYST |
COMP_CSR_BLANKING | COMP_CSR_BRGEN | COMP_CSR_SCALEN,
tmp_csr
);
#endif
/* Set window mode */
/* Note: Window mode bit is located into 1 out of the 2 pairs of COMP */
/* instances. Therefore, this function can update another COMP */
/* instance that the one currently selected. */
if(hcomp->Init.WindowMode == COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON)
{
SET_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
}
else
{
CLEAR_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
}
/* Delay for COMP scaler bridge voltage stabilization */
/* Apply the delay if voltage scaler bridge is enabled for the first time */
if ((READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) != 0U) &&
(comp_voltage_scaler_not_initialized != 0U) )
{
/* Wait loop initialization and execution */
/* Note: Variable divided by 2 to compensate partially */
/* CPU processing cycles. */
wait_loop_index = (COMP_DELAY_VOLTAGE_SCALER_STAB_US * (SystemCoreClock / (1000000 * 2U)));
while(wait_loop_index != 0U)
{
wait_loop_index--;
}
}
/* Get the EXTI line corresponding to the selected COMP instance */
exti_line = COMP_GET_EXTI_LINE(hcomp->Instance);
/* Manage EXTI settings */
if((hcomp->Init.TriggerMode & (COMP_EXTI_IT | COMP_EXTI_EVENT)) != RESET)
{
/* Configure EXTI rising edge */
if((hcomp->Init.TriggerMode & COMP_EXTI_RISING) != RESET)
{
LL_EXTI_EnableRisingTrig_0_31(exti_line);
}
else
{
LL_EXTI_DisableRisingTrig_0_31(exti_line);
}
/* Configure EXTI falling edge */
if((hcomp->Init.TriggerMode & COMP_EXTI_FALLING) != RESET)
{
LL_EXTI_EnableFallingTrig_0_31(exti_line);
}
else
{
LL_EXTI_DisableFallingTrig_0_31(exti_line);
}
/* Clear COMP EXTI pending bit (if any) */
LL_EXTI_ClearFlag_0_31(exti_line);
/* Configure EXTI event mode */
if((hcomp->Init.TriggerMode & COMP_EXTI_EVENT) != RESET)
{
LL_EXTI_EnableEvent_0_31(exti_line);
}
else
{
LL_EXTI_DisableEvent_0_31(exti_line);
}
/* Configure EXTI interrupt mode */
if((hcomp->Init.TriggerMode & COMP_EXTI_IT) != RESET)
{
LL_EXTI_EnableIT_0_31(exti_line);
}
else
{
LL_EXTI_DisableIT_0_31(exti_line);
}
}
else
{
/* Disable EXTI event mode */
LL_EXTI_DisableEvent_0_31(exti_line);
/* Disable EXTI interrupt mode */
LL_EXTI_DisableIT_0_31(exti_line);
}
/* Set HAL COMP handle state */
/* Note: Transition from state reset to state ready, */
/* otherwise (coming from state ready or busy) no state update. */
if (hcomp->State == HAL_COMP_STATE_RESET)
{
hcomp->State = HAL_COMP_STATE_READY;
}
}
return status;
}
