/*********************************************************************************************************//**
* @brief Get Modem status.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @return The current status of Modem Status Register.
************************************************************************************************************/
u8 USART_GetModemStatus(USART_TypeDef* USARTx)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
return (u8)USARTx->MSR;
}
/*********************************************************************************************************//**
* @brief USART ReceiveData from Rx.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @return The received data.
************************************************************************************************************/
u16 USART_ReceiveData(USART_TypeDef* USARTx)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
return (u16)USARTx->RBR;
}
/*********************************************************************************************************//**
* @brief Get Interrupt ID value.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @retval The interrupt ID of USART.
* @arg USART_IID_RLS
* @arg USART_IID_RDA
* @arg USART_IID_CTI
* @arg USART_IID_THRE
* @arg USART_IID_MS
* @arg USART_IID_NON
************************************************************************************************************/
u8 USART_GetIntID(USART_TypeDef* USARTx)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
return (u8)USARTx->IIR;
}
/*********************************************************************************************************//**
* @brief Initialize the USARTx peripheral according to the specified parameters in the USART_InitStruct.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_InitStructure: pointer to a USART_InitTypeDef structure that contains the configuration information
* for the specified USART peripheral.
* @retval None
************************************************************************************************************/
void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStructure)
{
u32 tmpreg = 0x00;
CKCU_ClocksTypeDef Clocks;
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_BAUDRATE(USART_InitStructure->USART_BaudRate));
Assert_Param(IS_USART_WORD_LENGTH(USART_InitStructure->USART_WordLength));
Assert_Param(IS_USART_STOPBITS(USART_InitStructure->USART_StopBits));
Assert_Param(IS_USART_PARITY(USART_InitStructure->USART_Parity));
Assert_Param(IS_USART_MODE(USART_InitStructure->USART_Mode));
/*---------------------------- USART LCR Configuration ---------------------------------------------------*/
tmpreg = USARTx->LCR & LCR_CLEAR_Mask;
tmpreg |= USART_InitStructure->USART_StopBits | USART_InitStructure->USART_WordLength |
USART_InitStructure->USART_Parity;
USARTx->LCR = tmpreg;
/*---------------------------- USART MDR Configuration ---------------------------------------------------*/
tmpreg = USARTx->MDR & MDR_CLEAR_Mask;
tmpreg |= USART_InitStructure->USART_Mode;
USARTx->MDR = tmpreg;
/*---------------------------- USART BaudRate Configuration ----------------------------------------------*/
CKCU_GetClocksFrequency(&Clocks);
tmpreg = (Clocks.USART_Freq/(u32)USART_InitStructure->USART_BaudRate);
USARTx->DLR = tmpreg;
}
/*********************************************************************************************************//**
* @brief Deinitialize registers of the USART peripheral by resetting USART.
* @param USARTx: where USARTx is USART to select the USART peripheral.
* @retval None
************************************************************************************************************/
void USART_DeInit(USART_TypeDef* USARTx)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
RSTCU_APBPerip0Reset(RSTCU_APBRST0_USART, ENABLE);
}
/*********************************************************************************************************//**
* @brief USART SendData from Tx.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param Data: the data to be transmitted.
* @retval None
************************************************************************************************************/
void USART_SendData(USART_TypeDef* USARTx, u16 Data)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_DATA(Data));
USARTx->RBR = Data;
}
/*********************************************************************************************************//**
* @brief Clear both the write and read point in Tx FIFO or Rx FIFO.
* @param USARTx: where USARTx is the selected USART from the USART peripheral, x can be 0 or 1.
* @param USART_FIFODirection: Determine TX FIFO or Rx FIFO that is to be reset.
* This parameter can be any combination of the following values:
* @arg USART_FIFO_TX : Tx FIFO is to be reset
* @arg USART_FIFO_RX : Rx FIFO is to be reset
* @retval None
************************************************************************************************************/
void USART_FIFOReset(USART_TypeDef* USARTx, u32 USART_FIFODirection)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_FIFO_DIRECTION(USART_FIFODirection));
USARTx->FCR |= USART_FIFODirection;
}
/*********************************************************************************************************//**
* @brief Set the value of USART FIFO Time Out.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_TimeOut: Specify the value of Time Out.
* @retval None
************************************************************************************************************/
void USART_SetTimeOutValue(USART_TypeDef* USARTx, u32 USART_TimeOut)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_TIMEOUT(USART_TimeOut));
/* Set the USART time out */
USARTx->TPR = (USARTx->TPR & TPR_RTOIC_Mask) | USART_TimeOut;
}
/*********************************************************************************************************//**
* @brief Set the specified USART guard time.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_GuardTime: Specify the guard time.
* @retval None
************************************************************************************************************/
void USART_SetGuardTime(USART_TypeDef* USARTx, u32 USART_GuardTime)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_GUARD_TIME(USART_GuardTime));
/* Set the USART guard time */
USARTx->TPR = (USARTx->TPR & TPR_TG_Mask) | (USART_GuardTime << 0x08);
}
/*********************************************************************************************************//**
* @brief Set the specified USART IrDA prescaler.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_IrDAPrescaler: Specify the USART IrDA prescaler.
* @retval None
************************************************************************************************************/
void USART_SetIrDAPrescaler(USART_TypeDef* USARTx, u32 USART_IrDAPrescaler)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_IRDA_PRESCALER(USART_IrDAPrescaler));
/* Set the USART IrDA prescaler */
USARTx->ICR = (USARTx->ICR & RCR_ILPDVSR_Mask) | (USART_IrDAPrescaler << 0x08);
}
/*********************************************************************************************************//**
* @brief Set the specified USART RS485 address match value.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_AddressMatchValue: specify the RS485 address match value.
* @retval None
************************************************************************************************************/
void USART_SetAddressMatchValue(USART_TypeDef* USARTx, u32 USART_AddressMatchValue)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_ADDRESS_MATCH_VALUE(USART_AddressMatchValue));
/* Set the USART guard time */
USARTx->RCR = (USARTx->RCR & RS485CR_ADDM_Mask) | (u32)(USART_AddressMatchValue<<0x08);
}
/*********************************************************************************************************//**
* @brief Configure the Tx FIFO Interrupt Trigger Level.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_TFITL: Specify the USART Tx FIFO interrupt trigger level.
* This parameter can be one of the following values:
* @arg USART_TFITL_00
* @arg USART_TFITL_02
* @arg USART_TFITL_04
* @arg USART_TFITL_08
* @retval None
************************************************************************************************************/
void USART_TFITLConfig(USART_TypeDef* USARTx, u32 USART_TFITL)
{
u32 tmpreg = 0x00;
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_TFITL(USART_TFITL));
tmpreg = USARTx->FCR & FCR_TFITL_CLEAR_Mask;
/* Set the USART TFITL */
USARTx->FCR = tmpreg | USART_TFITL;
}
/*********************************************************************************************************//**
* @brief Deinitialize registers of the USART peripheral by resetting USART.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @retval None
************************************************************************************************************/
void USART_DeInit(USART_TypeDef* USARTx)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
if(USARTx == USART0)
{
RSTCU_APBPerip0Reset(RSTCU_APBRST0_USART0, ENABLE);
}
else
{
RSTCU_APBPerip0Reset(RSTCU_APBRST0_USART1, ENABLE);
}
}
/*********************************************************************************************************//**
* @brief Enable the IrDA transmitter or receiver.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_IrDADirection: Specify the USART IrDA direction select.
* This parameter can be one of the following values:
* @arg USART_IRDA_TX
* @arg USART_IRDA_RX
* @retval None
************************************************************************************************************/
void USART_IrDADirectionConfig(USART_TypeDef* USARTx, u32 USART_IrDADirection)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_IRDA_DIRECTION(USART_IrDADirection));
if (USART_IrDADirection != USART_IRDA_RX)
{
USARTx->ICR |= USART_IRDA_TX;
}
else
{
USARTx->ICR &= USART_IRDA_RX;
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable inverting serial input function of IrDA on the specified USART.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param NewState: new state of the inverting serial input.
* This parameter can be: ENABLE or DISABLE.
* @retval None
************************************************************************************************************/
void USART_IrDAInvtInputCmd(USART_TypeDef* USARTx, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
USARTx->ICR |= USART_RXINV_ON;
}
else
{
USARTx->ICR &= USART_RXINV_OFF;
}
}
/*********************************************************************************************************//**
* @brief Configure stick parity value of the USART.
* @param USARTx: where USARTx is the selected USART from the USART peripheral, x can be 0 or 1.
* @param USART_StickParity: Specify stick parity of the USART.
* This parameter can be one of the following values
* @arg USART_STICK_LOW
* @arg USART_STICK_HIGH
* @retval None
************************************************************************************************************/
void USART_StickParityConfig(USART_TypeDef * USARTx, u32 USART_StickParity)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_STICK_PARITY(USART_StickParity));
if (USART_StickParity != USART_STICK_HIGH)
{
USARTx->LCR |= USART_STICK_LOW;
}
else
{
USARTx->LCR &= USART_STICK_HIGH;
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable the USART stick parity function.
* @param USARTx: where USARTx is the selected USART from the USART peripheral, x can be 0 or 1.
* @param NewState: new state of the stick parity.
* This parameter can be: ENABLE or DISABLE
* @retval None
************************************************************************************************************/
void USART_StickParityCmd(USART_TypeDef* USARTx, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
USARTx->LCR |= USART_SPE_ON;
}
else
{
USARTx->LCR &= USART_SPE_OFF;
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable time out interrupt of the USART.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param NewState: new state of the time out interrupt.
* This parameter can be: ENABLE or DISABLE.
* @retval None
************************************************************************************************************/
void USART_TimeOutIntConfig(USART_TypeDef* USARTx, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
USARTx->TPR |= USART_TIMEOUT_ON;
}
else
{
USARTx->TPR &= USART_TIMEOUT_OFF;
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable the USART interrupts.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_IER: Specify if the USART interrupt source to be enabled or disabled.
* This parameter can be one of the following values:
* @arg USART_IER_MSIE
* @arg USART_IER_RLSIE
* @arg USART_IER_THREIE
* @arg USART_IER_RDAIE
* @arg USART_IER_ENON
* @param NewState: new state of the USART interrupts.
* This parameter can be: ENABLE or DISABLE.
* @retval None
************************************************************************************************************/
void USART_IntConfig(USART_TypeDef* USARTx, u32 USART_IER, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
USARTx->IER |= USART_IER;
}
else
{
USARTx->IER &= ~USART_IER;
}
}
/*********************************************************************************************************//**
* @brief Configure the polarity of RS485 transmitter enable signal.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_RS485Polarity: Specify the polarity of USART RS485 Tx enable signal.
* This parameter can be one of the following values:
* @arg USART_RS485POL_LOW
* @arg USART_RS485POL_HIGH
* @retval None
************************************************************************************************************/
void USART_RS485TxEnablePolarityConfig(USART_TypeDef* USARTx, u32 USART_RS485Polarity)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_RS485_POLARITY(USART_RS485Polarity));
if (USART_RS485Polarity != USART_RS485POLARITY_HIGH)
{
USARTx->RCR |= USART_RS485POLARITY_LOW;
}
else
{
USARTx->RCR &= USART_RS485POLARITY_HIGH;
}
}
/*********************************************************************************************************//**
* @brief Configure the USART IrDA interface.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_IrDAMode: Specify the USART IrDA mode.
* This parameter can be one of the following values:
* @arg USART_IRDA_LOWPOWER
* @arg USART_IRDA_NORMAL
* @retval None
************************************************************************************************************/
void USART_IrDAConfig(USART_TypeDef* USARTx, u32 USART_IrDAMode)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_IRDA_MODE(USART_IrDAMode));
if (USART_IrDAMode != USART_IRDA_NORMAL)
{
USARTx->ICR |= USART_IRDA_LOWPOWER;
}
else
{
USARTx->ICR &= USART_IRDA_NORMAL;
}
}
/*********************************************************************************************************//**
* @brief Force pin DTR/RTS to low or high state.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_ModemPin: Specify the USART modem pin to be forced.
* This parameter can be one of the following values:
* @arg USART_MODEM_DTR
* @arg USART_MODEM_RTS
* @param USART_ModemState: the USART modem pin state.
* This parameter can be one of the following values:
* @arg USART_MODEMSTATE_HIGH
* @arg USART_MODEMSTATE_LOW
* @return None
************************************************************************************************************/
void USART_ForceModemPinState(USART_TypeDef* USARTx, u32 USART_ModemPin, u32 USART_ModemState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_MODEM_PIN(USART_ModemPin));
Assert_Param(IS_USART_MODEM_STATE(USART_ModemState));
if (USART_ModemState != USART_MODEMSTATE_HIGH)
{
USARTx->MCR |= USART_MODEMSTATE_LOW << USART_ModemPin;
}
else
{
USARTx->MCR &= ~(USART_MODEMSTATE_HIGH << USART_ModemPin);
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable the USART RS485 normal multi-drop operation mode.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param NewState: new state of the USART RS485 AAD.
* This parameter can be: ENABLE or DISABLE.
* @retval None
************************************************************************************************************/
void USART_RS485AADCmd(USART_TypeDef* USARTx, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
/* Enable the hardware flow control by setting the HFCEN bit in the FCR register */
USARTx->RCR |= USART_RS485AAD_ON;
}
else
{
/* Disable the hardware flow control by clearing the TXEN bit in the HFCEN register */
USARTx->RCR &= USART_RS485AAD_OFF;
}
}
/*********************************************************************************************************//**
* @brief Enable or Disable the USART Rx.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param NewState: new state of the USART Rx.
* This parameter can be: ENABLE or DISABLE.
* @retval None
************************************************************************************************************/
void USART_RxCmd(USART_TypeDef* USARTx, ControlStatus NewState)
{
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_CONTROL_STATUS(NewState));
if (NewState != DISABLE)
{
/* Enable the Rx by setting the RXEN bit in the FCR register */
USARTx->FCR |= USART_RXEN_ON;
}
else
{
/* Disable the Rx by clearing the RXEN bit in the FCR register */
USARTx->FCR &= USART_RXEN_OFF;
}
}
/*********************************************************************************************************//**
* @brief Get LINE Status flags.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_FLAG: Specify the flag to check.
* This parameter can be one of the following values:
* @arg USART_LSR_RFDR
* @arg USART_LSR_OEI
* @arg USART_LSR_PEI
* @arg USART_LSR_FEI
* @arg USART_LSR_BII
* @arg USART_LSR_THRE
* @arg USART_LSR_TE
* @arg USART_LSR_ERR
* @arg USART_LSR_RSADDEF
* @return The new state of USART_FLAG (SET or RESET).
************************************************************************************************************/
FlagStatus USART_GetLineStatus(USART_TypeDef* USARTx, u32 USART_FLAG)
{
FlagStatus bitstatus = RESET;
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_LSR_FLAG(USART_FLAG));
if ((USARTx->LSR & USART_FLAG) != (u32)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/*********************************************************************************************************//**
* @brief Return the status of specified USART FIFO.
* @param USARTx: where USARTx is the selected USART from the USART peripherals, x can be 0 or 1.
* @param USART_FIFODirection: specify the FIFO that is to be check.
* This parameter can be one of the following values:
* @arg USART_FIFO_TX : USART Tx FIFO
* @arg USART_FIFO_RX : USART Rx FIFO
* @retval The number of data in Tx FIFO or Rx FIFO.
************************************************************************************************************/
u8 USART_GetFIFOStatus(USART_TypeDef* USARTx, u32 USART_FIFODirection)
{
u32 tmpreg;
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_FIFO_DIRECTION(USART_FIFODirection));
if (USART_FIFODirection == USART_FIFO_TX)
{
tmpreg = USARTx->FSR & 0x1f;
}
else
{
tmpreg = (USARTx->FSR & 0x1f00) >> 8;
}
return (u8)tmpreg;
}
/*********************************************************************************************************//**
* @brief Initialize Clock of the USARTx peripheral according to the specified parameters
* in the USART_ClockInitStruct.
* @param USARTx: where USARTx is USART to select the USART peripheral, x can be 0 or 1.
* @param USART_SynClock_InitStruct: pointer to a USART_SynClock_InitTypeDef structure that contains
* the configuration information for the specified USART peripheral.
* @retval None
************************************************************************************************************/
void USART_SynClockInit(USART_TypeDef* USARTx, USART_SynClock_InitTypeDef* USART_SynClock_InitStruct)
{
u32 tmpreg = 0x00;
/* Check the parameters */
Assert_Param(IS_USART(USARTx));
Assert_Param(IS_USART_SYNCHRONOUS_CLOCK(USART_SynClock_InitStruct->USART_ClockEnable));
Assert_Param(IS_USART_SYNCHRONOUS_PHASE(USART_SynClock_InitStruct->USART_ClockPhase));
Assert_Param(IS_USART_SYNCHRONOUS_POLARITY(USART_SynClock_InitStruct->USART_ClockPolarity));
Assert_Param(IS_USART_TRANSFER_MODE(USART_SynClock_InitStruct->USART_TransferSelectMode));
/*---------------------------- USART SCR Configuration -----------------------*/
/* Configure the USART CLKEN, LBCP, CPS and CPO ------------*/
/* Set CLKEN bit according to USART_ClockEnable value */
/* Set CPS bit according to USART_ClockPhase value */
/* Set CPO bit according to USART_ClockPolarity value */
USARTx->SCR = USART_SynClock_InitStruct->USART_ClockEnable | USART_SynClock_InitStruct->USART_ClockPhase |
USART_SynClock_InitStruct->USART_ClockPolarity;
/* Set TRSM bit according to USART_TransferSelectMode value */
tmpreg = USARTx->MDR & TRSM_CLEAR_Mask;
tmpreg |= USART_SynClock_InitStruct->USART_TransferSelectMode;
USARTx->MDR = tmpreg;
}
