stm32f30x_opamp.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f30x_opamp.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define OPAMP_CSR_DEFAULT_MASK                    ((uint32_t)0xFFFFFF93)
#define OPAMP_CSR_TIMERMUX_MASK                   ((uint32_t)0xFFFFF8FF)
#define OPAMP_CSR_TRIMMING_MASK                   ((uint32_t)0x0000001F)

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

void OPAMP_DeInit(uint32_t OPAMP_Selection)
{
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = ((uint32_t)0x00000000);
}

void OPAMP_Init(uint32_t OPAMP_Selection, OPAMP_InitTypeDef* OPAMP_InitStruct)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_INVERTING_INPUT(OPAMP_InitStruct->OPAMP_InvertingInput));
  assert_param(IS_OPAMP_NONINVERTING_INPUT(OPAMP_InitStruct->OPAMP_NonInvertingInput));

  tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);

  tmpreg &= (uint32_t) (OPAMP_CSR_DEFAULT_MASK);

  tmpreg |= (uint32_t)(OPAMP_InitStruct->OPAMP_InvertingInput | OPAMP_InitStruct->OPAMP_NonInvertingInput);

  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
}

void OPAMP_StructInit(OPAMP_InitTypeDef* OPAMP_InitStruct)
{
  OPAMP_InitStruct->OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO1;
  OPAMP_InitStruct->OPAMP_InvertingInput = OPAMP_InvertingInput_IO1;
}

void OPAMP_PGAConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_PGAGain, uint32_t OPAMP_PGAConnect)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_PGAGAIN(OPAMP_PGAGain));
  assert_param(IS_OPAMP_PGACONNECT(OPAMP_PGAConnect));

  /* Reset the configuration bits */
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_PGGAIN);

  /* Set the new configuration */
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_PGAGain | OPAMP_PGAConnect);
}

void OPAMP_VrefConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_Vref)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_VREF(OPAMP_Vref));

  tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);

  tmpreg &= (uint32_t) (~OPAMP_CSR_CALSEL);

  tmpreg |= (uint32_t)(OPAMP_Vref);

  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
}

void OPAMP_VrefConnectNonInvertingInput(uint32_t OPAMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Connnect the internal reference to the OPAMP's non inverting input */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_FORCEVP);
  }
  else
  {
    /* Disconnnect the internal reference to the OPAMP's non inverting input */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_FORCEVP);
  }
}

void OPAMP_VrefConnectADCCmd(uint32_t OPAMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable output internal reference */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_TSTREF);
  }
  else
  {
    /* Disable output internal reference */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_TSTREF);
  }
}

void OPAMP_TimerControlledMuxConfig(uint32_t OPAMP_Selection, OPAMP_InitTypeDef* OPAMP_InitStruct)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_SECONDARY_INVINPUT(OPAMP_InitStruct->OPAMP_InvertingInput));
  assert_param(IS_OPAMP_NONINVERTING_INPUT(OPAMP_InitStruct->OPAMP_NonInvertingInput));

  tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);

  tmpreg &= (uint32_t) (OPAMP_CSR_TIMERMUX_MASK);

  tmpreg |= (uint32_t)((uint32_t)(OPAMP_InitStruct->OPAMP_InvertingInput<<3) | (uint32_t)(OPAMP_InitStruct->OPAMP_NonInvertingInput<<7));

  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
}

void OPAMP_TimerControlledMuxCmd(uint32_t OPAMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable the timer-controlled Mux mode */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_TCMEN);
  }
  else
  {
    /* Disable the timer-controlled Mux mode */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_TCMEN);
  }
}

void OPAMP_Cmd(uint32_t OPAMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Enable the selected OPAMPx peripheral */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_OPAMPxEN);
  }
  else
  {
    /* Disable the selected OPAMPx peripheral */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_OPAMPxEN);
  }
}

uint32_t OPAMP_GetOutputLevel(uint32_t OPAMP_Selection)
{
  uint32_t opampout = 0x0;

  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));

  /* Check if selected OPAMP output is high */
  if ((*(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) & (OPAMP_CSR_OUTCAL)) != 0)
  {
    opampout = OPAMP_OutputLevel_High;
  }
  else
  {
    opampout = OPAMP_OutputLevel_Low;
  }

  /* Return the OPAMP output level */
  return (uint32_t)(opampout);
}

void OPAMP_OffsetTrimModeSelect(uint32_t OPAMP_Selection, uint32_t OPAMP_Trimming)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_TRIMMING(OPAMP_Trimming));

  /* Reset USERTRIM bit */
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (~(uint32_t) (OPAMP_CSR_USERTRIM));

  /* Select trimming mode */
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= OPAMP_Trimming;
}

void OPAMP_OffsetTrimConfig(uint32_t OPAMP_Selection, uint32_t OPAMP_Input, uint32_t OPAMP_TrimValue)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_OPAMP_INPUT(OPAMP_Input));
  assert_param(IS_OPAMP_TRIMMINGVALUE(OPAMP_TrimValue));

  tmpreg = *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection);

  tmpreg &= ((uint32_t)~(OPAMP_CSR_TRIMMING_MASK<<OPAMP_Input));

  tmpreg |= (uint32_t)(OPAMP_TrimValue<<OPAMP_Input);

  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) = tmpreg;
}

void OPAMP_StartCalibration(uint32_t OPAMP_Selection, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
    /* Start the OPAMPx calibration */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_CALON);
  }
  else
  {
    /* Stop the OPAMPx calibration */
    *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) &= (uint32_t)(~OPAMP_CSR_CALON);
  }
}

void OPAMP_LockConfig(uint32_t OPAMP_Selection)
{
  /* Check the parameter */
  assert_param(IS_OPAMP_ALL_PERIPH(OPAMP_Selection));

  /* Set the lock bit corresponding to selected OPAMP */
  *(__IO uint32_t *) (OPAMP_BASE + OPAMP_Selection) |= (uint32_t) (OPAMP_CSR_LOCK);
}

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