stm32f30x_comp.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f30x_comp.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* CSR register Mask */
#define COMP_CSR_CLEAR_MASK              ((uint32_t)0x00000003)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

void COMP_DeInit(uint32_t COMP_Selection)
{
  *(__IO uint32_t *) (COMP_BASE + COMP_Selection) = ((uint32_t)0x00000000);
}

void COMP_Init(uint32_t COMP_Selection, COMP_InitTypeDef* COMP_InitStruct)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
  assert_param(IS_COMP_INVERTING_INPUT(COMP_InitStruct->COMP_InvertingInput));
  assert_param(IS_COMP_NONINVERTING_INPUT(COMP_InitStruct->COMP_NonInvertingInput));
  assert_param(IS_COMP_OUTPUT(COMP_InitStruct->COMP_Output));
  assert_param(IS_COMP_BLANKING_SOURCE(COMP_InitStruct->COMP_BlankingSrce));
  assert_param(IS_COMP_OUTPUT_POL(COMP_InitStruct->COMP_OutputPol));
  assert_param(IS_COMP_HYSTERESIS(COMP_InitStruct->COMP_Hysteresis));
  assert_param(IS_COMP_MODE(COMP_InitStruct->COMP_Mode));

  tmpreg = *(__IO uint32_t *) (COMP_BASE + COMP_Selection);

  tmpreg &= (uint32_t) (COMP_CSR_CLEAR_MASK);

  tmpreg |= (uint32_t)(COMP_InitStruct->COMP_InvertingInput | COMP_InitStruct->COMP_NonInvertingInput |
                        COMP_InitStruct->COMP_Output | COMP_InitStruct->COMP_OutputPol | COMP_InitStruct->COMP_BlankingSrce |
                        COMP_InitStruct->COMP_Hysteresis | COMP_InitStruct->COMP_Mode);

  *(__IO uint32_t *) (COMP_BASE + COMP_Selection) = tmpreg;
}

void COMP_StructInit(COMP_InitTypeDef* COMP_InitStruct)
{
  COMP_InitStruct->COMP_InvertingInput = COMP_InvertingInput_1_4VREFINT;
  COMP_InitStruct->COMP_NonInvertingInput = COMP_NonInvertingInput_IO1;
  COMP_InitStruct->COMP_Output = COMP_Output_None;
  COMP_InitStruct->COMP_BlankingSrce = COMP_BlankingSrce_None;
  COMP_InitStruct->COMP_OutputPol = COMP_OutputPol_NonInverted;
  COMP_InitStruct->COMP_Hysteresis = COMP_Hysteresis_No;
  COMP_InitStruct->COMP_Mode = COMP_Mode_UltraLowPower;
}

void COMP_Cmd(uint32_t COMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable the selected COMPx peripheral */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) |= (uint32_t) (COMP_CSR_COMPxEN);
  }
  else
  {
    /* Disable the selected COMP peripheral  */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) &= (uint32_t)(~COMP_CSR_COMPxEN);
  }
}

void COMP_SwitchCmd(uint32_t COMP_Selection, FunctionalState NewState)
{
  /* Check the parameter */
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Close SW1 switch */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) |= (uint32_t) (COMP_CSR_COMP1SW1);
  }
  else
  {
    /* Open SW1 switch */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) &= (uint32_t)(~COMP_CSR_COMP1SW1);
  }
}

uint32_t COMP_GetOutputLevel(uint32_t COMP_Selection)
{
  uint32_t compout = 0x0;

  /* Check the parameters */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));

  /* Check if selected comparator output is high */
  if ((*(__IO uint32_t *) (COMP_BASE + COMP_Selection) & (COMP_CSR_COMPxOUT)) != 0)
  {
    compout = COMP_OutputLevel_High;
  }
  else
  {
    compout = COMP_OutputLevel_Low;
  }

  /* Return the comparator output level */
  return (uint32_t)(compout);
}

void COMP_WindowCmd(uint32_t COMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  assert_param(IS_COMP_WINDOW(COMP_Selection));
  
  if (NewState != DISABLE)
  {
    /* Enable the window mode */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) |= (uint32_t) COMP_CSR_COMPxWNDWEN;
  }
  else
  {
    /* Disable the window mode */
    *(__IO uint32_t *) (COMP_BASE + COMP_Selection) &= (uint32_t)(~COMP_CSR_COMPxWNDWEN);
  }
}

void COMP_LockConfig(uint32_t COMP_Selection)
{
  /* Check the parameter */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));

  /* Set the lock bit corresponding to selected comparator */
  *(__IO uint32_t *) (COMP_BASE + COMP_Selection) |= (uint32_t) (COMP_CSR_COMPxLOCK);
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/