Initialization and de-initialization functions

Functions
ErrorStatus	LL_SWPMI_DeInit (SWPMI_TypeDef *SWPMIx)
	De-initialize the SWPMI peripheral registers to their default reset values. More...
ErrorStatus	LL_SWPMI_Init (SWPMI_TypeDef *SWPMIx, LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
	Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitStruct. More...
void	LL_SWPMI_StructInit (LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
	Set each LL_SWPMI_InitTypeDef field to default value. More...

Detailed Description

Function Documentation

LL_SWPMI_DeInit()

ErrorStatus LL_SWPMI_DeInit

(

SWPMI_TypeDef *

SWPMIx

)

De-initialize the SWPMI peripheral registers to their default reset values.

Parameters

SWPMIx

SWPMI Instance

Return values

An	ErrorStatus enumeration value SUCCESS: SWPMI registers are de-initialized ERROR: Not applicable

Definition at line 81 of file stm32l4xx_ll_swpmi.c.

{
  ErrorStatus status = SUCCESS;

  /* Check the parameter */
  assert_param(IS_SWPMI_INSTANCE(SWPMIx));

  if (SWPMIx == SWPMI1)
  {
    LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_SWPMI1);
    LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_SWPMI1);
  }
  else
  {
    status = ERROR;
  }

  return status;
}

LL_SWPMI_Init()

ErrorStatus LL_SWPMI_Init	(	SWPMI_TypeDef *	SWPMIx,
		LL_SWPMI_InitTypeDef *	SWPMI_InitStruct
	)

Initialize the SWPMI peripheral according to the specified parameters in the SWPMI_InitStruct.

Note

As some bits in SWPMI configuration registers can only be written when the SWPMI is deactivated (SWPMI_CR_SWPACT bit = 0), SWPMI IP should be in deactivated state prior calling this function. Otherwise, ERROR result will be returned.

Parameters

SWPMIx	SWPMI Instance
SWPMI_InitStruct	pointer to a LL_SWPMI_InitTypeDef structure that contains the configuration information for the SWPMI peripheral.

Return values

An	ErrorStatus enumeration value SUCCESS: SWPMI registers are initialized ERROR: SWPMI registers are not initialized

Definition at line 112 of file stm32l4xx_ll_swpmi.c.

{
  ErrorStatus status = SUCCESS;

  /* Check the parameters */
  assert_param(IS_SWPMI_INSTANCE(SWPMIx));
  assert_param(IS_LL_SWPMI_BITRATE_VALUE(SWPMI_InitStruct->BitRatePrescaler));
  assert_param(IS_LL_SWPMI_SW_BUFFER_TX(SWPMI_InitStruct->TxBufferingMode));
  assert_param(IS_LL_SWPMI_SW_BUFFER_RX(SWPMI_InitStruct->RxBufferingMode));
  assert_param(IS_LL_SWPMI_VOLTAGE_CLASS(SWPMI_InitStruct->VoltageClass));

  /* SWPMI needs to be in deactivated state, in order to be able to configure some bits */
  if (LL_SWPMI_IsActivated(SWPMIx) == 0U)
  {
    /* Configure the BRR register (Bitrate) */
    LL_SWPMI_SetBitRatePrescaler(SWPMIx, SWPMI_InitStruct->BitRatePrescaler);

    /* Configure the voltage class */
    LL_SWPMI_SetVoltageClass(SWPMIx, SWPMI_InitStruct->VoltageClass);

    /* Set the new configuration of the SWPMI peripheral */
    MODIFY_REG(SWPMIx->CR,
              (SWPMI_CR_RXMODE | SWPMI_CR_TXMODE),
              (SWPMI_InitStruct->TxBufferingMode | SWPMI_InitStruct->RxBufferingMode));
  }
  /* Else (SWPMI not in deactivated state => return ERROR) */
  else
  {
    status = ERROR;
  }

  return status;
}

LL_SWPMI_StructInit()

void LL_SWPMI_StructInit

(

LL_SWPMI_InitTypeDef *

SWPMI_InitStruct

)

Set each LL_SWPMI_InitTypeDef field to default value.

Parameters

SWPMI_InitStruct

pointer to a LL_SWPMI_InitTypeDef structure that contains the configuration information for the SWPMI peripheral.

Return values

None

Definition at line 152 of file stm32l4xx_ll_swpmi.c.

{
  /* Set SWPMI_InitStruct fields to default values */
  SWPMI_InitStruct->VoltageClass     = LL_SWPMI_VOLTAGE_CLASS_C;
  SWPMI_InitStruct->BitRatePrescaler = (uint32_t)0x00000001;
  SWPMI_InitStruct->TxBufferingMode  = LL_SWPMI_SW_BUFFER_TX_SINGLE;
  SWPMI_InitStruct->RxBufferingMode  = LL_SWPMI_SW_BUFFER_RX_SINGLE;
}