/**
* @brief Configures Comparator
* @param None
* @retval None
*/
static void COMP_Config(void)
{
/*##-1- Configure the COMP peripheral ######################################*/
hcomp1.Instance = COMP1;
hcomp1.Init.InvertingInput = COMP_INVERTINGINPUT_DAC1;
hcomp1.Init.NonInvertingInput = COMP_NONINVERTINGINPUT_IO1;
hcomp1.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
hcomp1.Init.Mode = COMP_MODE_HIGHSPEED;
hcomp1.Init.WindowMode = COMP_WINDOWMODE_DISABLED;
hcomp1.Init.TriggerMode = COMP_TRIGGERMODE_IT_RISING_FALLING;
if(HAL_COMP_Init(&hcomp1) != HAL_OK)
{
/* Error */
ErrorHandler();
}
/*##-2- Start teh COMP1 and enable the interrupt ###########################*/
if(HAL_COMP_Start(&hcomp1) != HAL_OK)
{
/* Error */
ErrorHandler();
}
}
/**
* @brief Enables the interrupt and starts the comparator
* @param hcomp: COMP handle
* @retval HAL status.
*/
HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t extiline = 0;
status = HAL_COMP_Start(hcomp);
if(status == HAL_OK)
{
/* Check the parameter */
assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
/* Get the Exti Line output configuration */
extiline = __HAL_COMP_GET_EXTI_LINE(hcomp->Instance);
/* Configure the rising edge */
/* COMP TriggerMode set to COMP_TRIGGERMODE_IT_RISING or */
/* COMP_TRIGGERMODE_IT_RISING_FALLING. */
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET)
{
__HAL_COMP_EXTI_RISING_IT_ENABLE(extiline);
}
else
{
__HAL_COMP_EXTI_RISING_IT_DISABLE(extiline);
}
/* Configure the falling edge */
/* COMP TriggerMode set to COMP_TRIGGERMODE_IT_FALLING or */
/* COMP_TRIGGERMODE_IT_RISING_FALLING. */
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET)
{
__HAL_COMP_EXTI_FALLING_IT_ENABLE(extiline);
}
else
{
__HAL_COMP_EXTI_FALLING_IT_DISABLE(extiline);
}
/* Enable Exti interrupt mode */
__HAL_COMP_EXTI_ENABLE_IT(extiline);
/* Clear COMP Exti pending bit */
__HAL_COMP_EXTI_CLEAR_FLAG(extiline);
}
return status;
}
/**
* @brief Enables the interrupt and starts the comparator
* @param hcomp: COMP handle
* @retval HAL status.
*/
HAL_StatusTypeDef HAL_COMP_Start_IT(COMP_HandleTypeDef *hcomp)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t extiline = 0;
status = HAL_COMP_Start(hcomp);
if(status == HAL_OK)
{
/* Check the parameter */
assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
/* Get the Exti Line output configuration */
extiline = COMP_GET_EXTI_LINE(hcomp->Instance);
/* Configure the trigger rising edge */
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_RISING) != RESET)
{
SET_BIT(EXTI->RTSR, extiline);
}
else
{
CLEAR_BIT(EXTI->RTSR, extiline);
}
/* Configure the trigger falling edge */
if((hcomp->Init.TriggerMode & COMP_TRIGGERMODE_IT_FALLING) != RESET)
{
SET_BIT(EXTI->FTSR, extiline);
}
else
{
CLEAR_BIT(EXTI->FTSR, extiline);
}
/* Clear COMP EXTI pending bit */
WRITE_REG(EXTI->PR, extiline);
/* Enable EXTI interrupt mode */
SET_BIT(EXTI->IMR, extiline);
}
return status;
}
/**
* @brief Configure COMPx
* @param None
* @retval None
*/
static void COMPx_Config(void)
{
/*##-1- Configure the COMPx peripheral ###################################*/
/* COMPx Init: Inverted Pin is connected to DACx */
/* Non-inverted pin is connected to Humidity Sensor */
CompxHandle.Instance = COMPx;
CompxHandle.Init.InvertingInput = COMP_INVERTINGINPUT_DACx;
CompxHandle.Init.NonInvertingInput = COMP_NONINVERTINGINPUT_IO1;
CompxHandle.Init.Output = COMP_OUTPUT_TIM4IC2;
CompxHandle.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
CompxHandle.Init.Hysteresis = COMP_HYSTERESIS_NONE;
CompxHandle.Init.BlankingSrce = COMP_BLANKINGSRCE_NONE;
CompxHandle.Init.WindowMode = COMP_WINDOWMODE_DISABLED;
CompxHandle.Init.TriggerMode = COMP_TRIGGERMODE_NONE;
HAL_COMP_Init(&CompxHandle);
/*##-2- Start the comparator process #####################################*/
/* Enable COMPx */
HAL_COMP_Start(&CompxHandle);
}
/**
* @brief Configure COMPx
* @param None
* @retval None
*/
static void COMPx_Config(void)
{
/*##-1- Configure the COMPx peripheral ###################################*/
/* COMPx init: COMPx Output is connected to GPIO only (not redirected */
/* to timers) and output blanking source is connected to */
/* TIM1 OC5. */
CompxHandle.Instance = COMPx;
CompxHandle.Init.InvertingInput = COMP_INVERTINGINPUT_VREFINT;
CompxHandle.Init.NonInvertingInput = COMP_NONINVERTINGINPUT_IO1;
CompxHandle.Init.Output = COMP_OUTPUT_NONE;
CompxHandle.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
CompxHandle.Init.BlankingSrce = COMP_BLANKINGSRCE_TIM1OC5;
CompxHandle.Init.WindowMode = COMP_WINDOWMODE_DISABLE;
CompxHandle.Init.TriggerMode = COMP_TRIGGERMODE_NONE;
HAL_COMP_Init(&CompxHandle);
/*##-2- Start the comparator process #####################################*/
/* Enable COMPx: the higher threshold is set to VREFINT ~ 1.22 V */
HAL_COMP_Start(&CompxHandle);
}
