/**
* @brief 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.
* @param SWPMIx SWPMI Instance
* @param SWPMI_InitStruct pointer to a @ref LL_SWPMI_InitTypeDef structure that contains
* the configuration information for the SWPMI peripheral.
* @retval An ErrorStatus enumeration value
* - SUCCESS: SWPMI registers are initialized
* - ERROR: SWPMI registers are not initialized
*/
ErrorStatus LL_SWPMI_Init(SWPMI_TypeDef *SWPMIx, LL_SWPMI_InitTypeDef *SWPMI_InitStruct)
{
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) == 0)
{
/* 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;
}
/**
* @brief De-initialize the SWPMI peripheral.
* @param hswpmi: SWPMI handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SWPMI_DeInit(SWPMI_HandleTypeDef *hswpmi)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the SWPMI handle allocation */
if(hswpmi == NULL)
{
status = HAL_ERROR;
}
else
{
/* Check the parameters */
assert_param(IS_SWPMI_INSTANCE(hswpmi->Instance));
hswpmi->State = HAL_SWPMI_STATE_BUSY;
/* Disable SWPMI interface */
CLEAR_BIT(hswpmi->Instance->CR, SWPMI_CR_SWPACT);
/* DeInit the low level hardware */
HAL_SWPMI_MspDeInit(hswpmi);
hswpmi->ErrorCode = HAL_SWPMI_ERROR_NONE;
hswpmi->State = HAL_SWPMI_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hswpmi);
}
return status;
}
/**
* @brief De-initialize the SWPMI peripheral registers to their default reset values.
* @param SWPMIx SWPMI Instance
* @retval An ErrorStatus enumeration value
* - SUCCESS: SWPMI registers are de-initialized
* - ERROR: Not applicable
*/
ErrorStatus LL_SWPMI_DeInit(SWPMI_TypeDef *SWPMIx)
{
/* Check the parameter */
assert_param(IS_SWPMI_INSTANCE(SWPMIx));
LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_SWPMI1);
LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_SWPMI1);
return SUCCESS;
}
