diff options
Diffstat (limited to 'uc_str912/prj_template91x/str91x_lib/src/91x_uart.c')
| -rw-r--r-- | uc_str912/prj_template91x/str91x_lib/src/91x_uart.c | 658 |
1 files changed, 658 insertions, 0 deletions
diff --git a/uc_str912/prj_template91x/str91x_lib/src/91x_uart.c b/uc_str912/prj_template91x/str91x_lib/src/91x_uart.c new file mode 100644 index 0000000..3c87216 --- /dev/null +++ b/uc_str912/prj_template91x/str91x_lib/src/91x_uart.c @@ -0,0 +1,658 @@ +/******************** (C) COPYRIGHT 2006 STMicroelectronics ********************
+* File Name : 91x_uart.c
+* Author : MCD Application Team
+* Date First Issued : 05/18/2006 : Version 1.0
+* Description : This file provides all the UART software functions.
+********************************************************************************
+* History:
+* 05/24/2006 : Version 1.1
+* 05/18/2006 : Version 1.0
+********************************************************************************
+* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "91x_uart.h"
+#include "91x_scu.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* UART IrDA Mask */
+#define UART_IrDA_Disable_Mask 0xFFFD /* IrDA Disable Mask */
+#define UART_IrDA_Enable_Mask 0x0002 /* IrDA Enable Mask */
+#define IrDA_LowPower_Enable_Mask 0x0004 /*IrDA lower power mode enable*/
+#define IrDA_LowPower_Disable_Mask 0xFFFB /*IrDA lower power mode enable*/
+
+/* UART Mask */
+#define UART_Enable_Mask 0x0001 /* UART Enable Mask */
+#define UART_Disable_Mask 0xFFFE /* UART Disable Mask */
+
+/* UART LoopBack */
+#define UART_LoopBack_Disable_Mask 0xFF7F /* LoopBack Disable Mask */
+#define UART_LoopBack_Enable_Mask 0x0080 /* LoopBack Enable Mask */
+
+#define UART_WordLength_Mask 0xFF9F /* UART Word Length Mask */
+#define UART_Parity_Mask 0xFF79 /* UART Parity Mask */
+#define UART_HardwareFlowControl_Mask 0x3FFF /* UART Hardware Flow Control Mask */
+#define UART_TxRxFIFOLevel_Mask 0xFFC0 /* UART Tx Rx FIFO Level Mask */
+#define UART_BreakChar_Mask 0x0001 /* UART Break Character send Mask*/
+#define UART_FLAG_Mask 0x1F /* UART Flag Mask */
+#define UART_Mode_Mask 0xFCFF /* UART Mode Mask */
+#define UART_RTS_LowLevel_Mask 0x0800 /* RTS signal is low */
+#define UART_RTS_HighLevel_Mask 0xF7FF /* RTS signal is High */
+#define UART_DTR_LowLevel_Mask 0x0400 /* DTR signal is low */
+#define UART_DTR_HighLevel_Mask 0xFBFF /* DTR signal is High */
+#define UART_ClearFlag_Mask 0xAA /* Clear Flag Mask */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+ /*******************************************************************************
+* Function Name : UART_DeInit
+* Description : Deinitializes the UARTx peripheral registers
+* to their default reset values.
+* Input : UARTx: where x can be 0,1 or 2 to select the UART peripheral.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_DeInit(UART_TypeDef* UARTx)
+{
+ /* Reset the UARTx registers values */
+ if(UARTx == UART0)
+ {
+ SCU_APBPeriphReset(__UART0,ENABLE);
+ SCU_APBPeriphReset(__UART0,DISABLE);
+ }
+ else if(UARTx == UART1)
+ {
+ SCU_APBPeriphReset(__UART1,ENABLE);
+ SCU_APBPeriphReset(__UART1,DISABLE);
+ }
+ else if(UARTx == UART2)
+ {
+ SCU_APBPeriphReset(__UART2,ENABLE);
+ SCU_APBPeriphReset(__UART2,DISABLE);
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_Init
+* Description : Initializes the UARTx peripheral according to the specified
+* parameters in the UART_InitStruct .
+* Input : - UARTx: where x can be 0,1or 2 to select the UART peripheral.
+* - UART_InitStruct: pointer to a UART_InitTypeDef structure
+* that contains the configuration information for the
+* specified UART peripheral.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_Init(UART_TypeDef* UARTx, UART_InitTypeDef* UART_InitStruct)
+{
+
+ u64 UART_MainClock = 0;
+ u32 IntegerDivider = 0;
+ u32 FractionalDivider = 0;
+
+ /* Clear the LCR[6:5] bits */
+ UARTx->LCR &= UART_WordLength_Mask;
+ /* Set the LCR[6:5] bits according to UART_WordLength value */
+ UARTx->LCR |= UART_InitStruct->UART_WordLength;
+
+ /* Choose Stop Bits */
+ if(UART_InitStruct->UART_StopBits == UART_StopBits_2)
+ {
+ /* 2 Stop Bit */
+ UARTx->LCR |= UART_StopBits_2;
+ }
+ else
+ {
+ /* One Stop Bits */
+ UARTx->LCR &= UART_StopBits_1;
+ }
+
+ /* Configure the Parity */
+ /* Clear the LCR[7]and LCR[2:1] bits */
+ UARTx->LCR &= UART_Parity_Mask;
+ /* Set the LCR[7]and LCR[2:1] bits according to UART_Parity value */
+ UARTx->LCR |= UART_InitStruct->UART_Parity;
+
+ /* Configure the BaudRate */
+ UART_MainClock = (SCU_GetMCLKFreqValue())*1000;
+ if((SCU->CLKCNTR & 0x200) != 0x200)
+ {
+ UART_MainClock = UART_MainClock/2;
+ }
+ /* Determine the integer part */
+ IntegerDivider = ((100) * (UART_MainClock) / (16 * (UART_InitStruct->UART_BaudRate)));
+ UARTx->IBRD = IntegerDivider / 100;
+
+ /* Determine the fractional part */
+ FractionalDivider = IntegerDivider - (100 * (UARTx->IBRD));
+ UARTx->FBRD = ((((FractionalDivider * 64) + 50) / 100));
+
+ /* Choose the Hardware Flow Control */
+ /* Clear the CR[15:14] bits */
+ UARTx->CR &= UART_HardwareFlowControl_Mask;
+ /* Set the CR[15:14] bits according to UART_HardwareFlowControl value */
+ UARTx->CR |= UART_InitStruct->UART_HardwareFlowControl;
+
+ /* Configure the UART mode */
+ /* Clear the CR[9:8] bits */
+ UARTx->CR &= UART_Mode_Mask;
+ /* Set the CR[9:8] bits according to UART_Mode value */
+ UARTx->CR |= UART_InitStruct->UART_Mode;
+
+ /* Enable or disable the FIFOs */
+ /* Set the FIFOs Levels */
+ if(UART_InitStruct->UART_FIFO == UART_FIFO_Enable)
+ {
+ /* Enable the FIFOs */
+ UARTx->LCR |= UART_FIFO_Enable;
+
+ /* Clear TXIFLSEL and RXIFLSEL bits */
+ UARTx->IFLS &= UART_TxRxFIFOLevel_Mask;
+
+ /* Set RXIFLSEL bits according to UART_RxFIFOLevel value */
+ UARTx->IFLS |= (UART_InitStruct->UART_RxFIFOLevel << 3);
+
+ /* Set TXIFLSEL bits according to UART_TxFIFOLevel value */
+ UARTx->IFLS |= UART_InitStruct->UART_TxFIFOLevel;
+ }
+ else
+ {
+ /* Disable the FIFOs */
+ UARTx->LCR &= UART_FIFO_Disable;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_StructInit
+* Description : Fills each UART_InitStruct member with its reset value.
+* Input : UART_InitStruct: pointer to a UART_InitTypeDef structure which
+* will be initialized.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_StructInit(UART_InitTypeDef* UART_InitStruct)
+{
+ /* Reset the UART_InitStruct members */
+ UART_InitStruct->UART_WordLength = UART_WordLength_8D;
+ UART_InitStruct->UART_StopBits = UART_StopBits_1;
+ UART_InitStruct->UART_Parity = UART_Parity_Odd ;
+ UART_InitStruct->UART_BaudRate = 9600;
+ UART_InitStruct->UART_HardwareFlowControl = UART_HardwareFlowControl_None;
+ UART_InitStruct->UART_Mode = UART_Mode_Tx_Rx;
+ UART_InitStruct->UART_FIFO = UART_FIFO_Enable;
+ UART_InitStruct->UART_TxFIFOLevel = UART_FIFOLevel_1_2;
+ UART_InitStruct->UART_RxFIFOLevel = UART_FIFOLevel_1_2;
+}
+
+/*******************************************************************************
+* Function Name : UART_Cmd
+* Description : Enables or disables the specified UART peripheral.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART peripheral
+* - NewState: new state of the UARTx peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_Cmd(UART_TypeDef* UARTx, FunctionalState NewState)
+{
+ if (NewState == ENABLE)
+ {
+ /* Enable the selected UART by setting the UARTEN bit in the CR register */
+ UARTx->CR |= UART_Enable_Mask;
+ }
+ else
+ {
+ /* Disable the selected UART by clearing the UARTEN bit in the CR register */
+ UARTx->CR &= UART_Disable_Mask;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_ITConfig
+* Description : Enables or disables the specified UART interrupts.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART peripheral
+* - UART_IT: specifies the UART interrupts sources to be
+* enabled or disabled. This parameter can be any combination
+* of the following values:
+* - UART_IT_OverrunError: Overrun Error interrupt
+* - UART_IT_BreakError: Break Error interrupt
+* - UART_IT_ParityError: Parity Error interrupt
+* - UART_IT_FrameError: Frame Error interrupt
+* - UART_IT_ReceiveTimeOut: Receive Time Out interrupt
+* - UART_IT_Transmit: Transmit interrupt
+* - UART_IT_Receive: Receive interrupt
+* - UART_IT_DSR: DSR interrupt
+* - UART_IT_DCD: DCD interrupt
+* - UART_IT_CTS: CTS interrupt
+* - UART_IT_RI: RI interrupt
+* - NewState: new state of the UARTx peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_ITConfig(UART_TypeDef* UARTx, u16 UART_IT, FunctionalState NewState)
+{
+ if(NewState == ENABLE)
+ {
+ /* Enables the selected interrupts */
+ UARTx->IMSC |= UART_IT;
+ }
+ else
+ {
+ /* Disables the selected interrupts */
+ UARTx->IMSC &= ~UART_IT;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_DMAConfig
+* Description : Configures the UARTxs DMA interface.
+* Input : - UARTx: where x can be 1 or 2 to select the UART peripheral
+* - UART_DMAOnError: specifies the DMA on error request.
+* This parameter can be:
+* - UART_DMAOnError_Enable: DMA receive request enabled
+* when the UART error interrupt is asserted.
+* - UART_DMAOnError_Disable: DMA receive request disabled
+* when the UART error interrupt is asserted.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_DMAConfig(UART_TypeDef* UARTx, u16 UART_DMAOnError)
+{
+ if(UART_DMAOnError == UART_DMAOnError_Enable)
+ {
+ UARTx->DMACR &= UART_DMAOnError_Enable;
+ }
+ else
+ {
+ UARTx->DMACR |= UART_DMAOnError_Disable;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_DMACmd
+* Description : Enables or disables the UARTxs DMA interface.
+* Input : - UARTx: where x can be 1 or 2 to select the UART peripheral
+* - UART_DMAReq: enables or disables the request of DMA from UART.
+* This parameter can be:
+* - UART_DMAReq_Tx: Transmit DMA Enable
+* - UART_DMAReq_Rx: Receive DMA Enable
+* - NewState: new state of the UARTx peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_DMACmd(UART_TypeDef* UARTx, u8 UART_DMAReq, FunctionalState NewState)
+{
+ if(UART_DMAReq == UART_DMAReq_Tx)
+ {
+ if(NewState == ENABLE)
+ {
+ UARTx->DMACR |= UART_DMAReq_Tx;
+ }
+ else
+ {
+ UARTx->DMACR &= ~UART_DMAReq_Tx;
+ }
+ }
+
+ if(UART_DMAReq == UART_DMAReq_Rx)
+ {
+ if(NewState == ENABLE)
+ {
+ UARTx->DMACR |= UART_DMAReq_Rx;
+ }
+ else
+ {
+ UARTx->DMACR &= ~UART_DMAReq_Rx;
+ }
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_LoopBackConfig
+* Description : Enables or disables the LoopBack mode.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART peripheral
+* - NewState: new state of the UARTx peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_LoopBackConfig(UART_TypeDef* UARTx, FunctionalState NewState)
+{
+ if (NewState == ENABLE)
+ {
+ /* Enable the LoopBack mode of the specified UART */
+ UARTx->CR |= UART_LoopBack_Enable_Mask;
+ }
+ else
+ {
+ /* Disable the LoopBack mode of the specified UART */
+ UARTx->CR &= UART_LoopBack_Disable_Mask;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_GetFlagStatus
+* Description : Checks whether the specified UART flag is set or not.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART peripheral
+* - UART_FLAG: specifies the flag to check.
+* This parameter can be one of the following values:
+* - UART_FLAG_OverrunError: Overrun error flag
+* - UART_FLAG_Break: break error flag
+* - UART_FLAG_ParityError: parity error flag
+* - UART_FLAG_FrameError: frame error flag
+* - UART_FLAG_RI: RI flag
+* - UART_FLAG_TxFIFOEmpty: Transmit FIFO Empty flag
+* - UART_FLAG_RxFIFOFull: Receive FIFO Full flag
+* - UART_FLAG_TxFIFOFull: Transmit FIFO Full flag
+* - UART_FLAG_RxFIFOEmpty: Receive FIFO Empty flag
+* - UART_FLAG_Busy: UART Busy flag
+* - UART_FLAG_CTS: CTS flag
+* - UART_FLAG_DCD: DCD flag
+* - UART_FLAG_DSR: DSR flag
+* - UART_RawIT_OverrunError: Overrun Error interrupt flag
+* - UART_RawIT_BreakError: Break Error interrupt flag
+* - UART_RawIT_ParityError: Parity Error interrupt flag
+* - UART_RawIT_FrameError: Frame Error interrupt flag
+* - UART_RawIT_ReceiveTimeOut: ReceiveTimeOut interrupt flag
+* - UART_RawIT_Transmit: Transmit interrupt flag
+* - UART_RawIT_Receive: Receive interrupt flag
+* - UART_RawIT_DSR: DSR interrupt flag
+* - UART_RawIT_DCD: DCD interrupt flag
+* - UART_RawIT_CTS: CTS interrupt flag
+* - UART_RawIT_RI: RI interrupt flag
+* Output : None
+* Return : The new state of UART_FLAG (SET or RESET).
+*******************************************************************************/
+FlagStatus UART_GetFlagStatus(UART_TypeDef* UARTx, u16 UART_FLAG)
+{
+
+ u32 UARTReg = 0, FlagPos = 0;
+ u32 StatusReg = 0;
+
+ /* Get the UART register index */
+ UARTReg = UART_FLAG >> 5;
+
+ /* Get the flag position */
+ FlagPos = UART_FLAG & UART_FLAG_Mask;
+
+ if(UARTReg == 1) /* The flag to check is in RSR register */
+ {
+ StatusReg = UARTx->RSECR;
+ }
+ else if (UARTReg == 2) /* The flag to check is in FR register */
+ {
+ StatusReg = UARTx->FR;
+ }
+ else if(UARTReg == 3) /* The flag to check is in RIS register */
+ {
+ StatusReg = UARTx->RIS;
+ }
+
+ if((StatusReg & (1 << FlagPos))!= RESET)
+ {
+ return SET;
+ }
+ else
+ {
+ return RESET;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_ClearFlag
+* Description : Clears the UARTxs flags(Frame, Parity, Break, Overrun error).
+* Input : - UARTx: where x can be 0,1or 2 to select the UART peripheral.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_ClearFlag(UART_TypeDef* UARTx)
+{
+ /* Clear the flag */
+ UARTx->RSECR = UART_ClearFlag_Mask;
+}
+
+/*******************************************************************************
+* Function Name : UART_GetITStatus
+* Description : Checks whether the specified UART interrupt has occured or not.
+* Input : - UARTx: where x can be 0,1or 2 to select the UART peripheral.
+* - UART_IT: specifies the interrupt pending bit to be checked.
+* This parameter can be one of the following values:
+* - UART_IT_OverrunError: Overrun Error interrupt
+* - UART_IT_BreakError: Break Error interrupt
+* - UART_IT_ParityError: Parity Error interrupt
+* - UART_IT_FrameError: Frame Error interrupt
+* - UART_IT_ReceiveTimeOut: Receive Time Out interrupt
+* - UART_IT_Transmit: Transmit interrupt
+* - UART_IT_Receive: Receive interrupt
+* - UART_IT_DSR: DSR interrupt
+* - UART_IT_DCD: DCD interrupt
+* - UART_IT_CTS: CTS interrupt
+* - UART_IT_RI: RI interrupt
+* Output : None
+* Return : The new state of UART_IT (SET or RESET).
+*******************************************************************************/
+ITStatus UART_GetITStatus(UART_TypeDef* UARTx, u16 UART_IT)
+{
+ if((UARTx->MIS & UART_IT) != RESET)
+ {
+ return SET;
+ }
+ else
+ {
+ return RESET;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_ClearITPendingBit
+* Description : Clears the UARTxs interrupt pending bits.
+* Input : - UARTx: where x can be 0,1or 2 to select the UART peripheral.
+* - UART_IT: specifies the interrupt pending bit to clear.
+* More than one interrupt can be cleared using the | operator.
+* This parameter can be:
+* - UART_IT_OverrunError: Overrun Error interrupt
+* - UART_IT_BreakError: Break Error interrupt
+* - UART_IT_ParityError: Parity Error interrupt
+* - UART_IT_FrameError: Frame Error interrupt
+* - UART_IT_ReceiveTimeOut: Receive Time Out interrupt
+* - UART_IT_Transmit: Transmit interrupt
+* - UART_IT_Receive: Receive interrupt
+* - UART_IT_DSR: DSR interrupt
+* - UART_IT_DCD: DCD interrupt
+* - UART_IT_CTS: CTS interrupt
+* - UART_IT_RI: RI interrupt
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_ClearITPendingBit(UART_TypeDef* UARTx, u16 UART_IT)
+{
+ /* Clear the specified interrupt */
+ UARTx->ICR = UART_IT;
+}
+
+/*******************************************************************************
+* Function Name : UART_IrDALowPowerConfig
+* Description : Sets the IrDA low power mode
+* Input : - IrDAx: where x can be 0,1 or 2 to select the UART/IrDA peripheral.
+* - NewState: new state of the UARTIrDA peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_IrDALowPowerConfig(u8 IrDAx, FunctionalState NewState)
+{
+ UART_TypeDef* UARTx;
+
+ switch(IrDAx)
+ {
+ case IrDA0: UARTx = UART0;
+ break;
+ case IrDA1: UARTx = UART1;
+ break;
+ case IrDA2: UARTx = UART2;
+ break;
+ }
+
+ if (NewState == ENABLE)
+ {
+ UARTx->CR |= IrDA_LowPower_Enable_Mask;
+ }
+ else
+ {
+ UARTx->CR &= IrDA_LowPower_Disable_Mask;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_IrDASetCounter
+* Description : Sets the IrDA counter divisor value.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART/IrDA peripheral.
+* - IrDA_Counter: IrDA counter divisor new value n low power mode(Hz).
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_IrDASetCounter(u8 IrDAx, u32 IrDA_Counter)
+{
+ UART_TypeDef* UARTx;
+ u32 APBClock;
+ switch(IrDAx)
+ {
+ case IrDA0: UARTx = UART0;
+ break;
+ case IrDA1: UARTx = UART1;
+ break;
+ case IrDA2: UARTx = UART2;
+ break;
+ }
+ /* Get the APB frequency */
+ APBClock = (SCU_GetPCLKFreqValue())*1000;
+ /* Determine the Counter Divisor part */
+ UARTx->ILPR = (((APBClock*10) / ( IrDA_Counter)) + 5 )/10;
+ }
+
+/*******************************************************************************
+* Function Name : UART_IrDACmd
+* Description : Enables or disables the UARTxs IrDA interface.
+* Input : - IrDAx: where x can be 0,1 or 2 to select the UART/IrDA peripheral
+* - NewState: new state of the UARTx peripheral.
+* This parameter can be: ENABLE or DISABLE.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_IrDACmd(u8 IrDAx, FunctionalState NewState)
+{
+ UART_TypeDef* UARTx;
+
+ switch(IrDAx)
+ {
+ case IrDA0: UARTx = UART0;
+ break;
+ case IrDA1: UARTx = UART1;
+ break;
+ case IrDA2: UARTx = UART2;
+ break;
+ }
+ if(NewState == ENABLE)
+ {
+ /* Enable the IrDA mode of the specified UART */
+ UARTx->CR |= UART_IrDA_Enable_Mask;
+ }
+ else
+ {
+ /* Disable the IrDA mode of the specified UART */
+ UARTx->CR &= UART_IrDA_Disable_Mask;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_SendData
+* Description : Transmits signle Byte of data through the UARTx peripheral.
+* Input : - UARTx: where x can be 0,1 or 2 to select the UART peripheral.
+* - Data: the byte to transmit
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_SendData(UART_TypeDef* UARTx, u8 Data)
+{
+ /* Transmit one byte */
+ UARTx->DR = Data;
+}
+
+/*******************************************************************************
+* Function Name : UART_ReceiveData
+* Description : Returns the most recent received Byte by the UARTx peripheral.
+* Input : UARTx: where x can be 0,1 or 2 to select the UART peripheral.
+* Output : None
+* Return : The received data
+*******************************************************************************/
+u8 UART_ReceiveData(UART_TypeDef* UARTx)
+{
+ /* Receive one byte */
+ return ((u8)UARTx->DR);
+}
+
+/*******************************************************************************
+* Function Name : UART_SendBreak
+* Description : Transmits break characters.
+* Input : UARTx: where x can be 0,1 or 2 to select the UART peripheral.
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_SendBreak(UART_TypeDef* UARTx)
+{
+ /* Send break characters */
+ UARTx->LCR |= UART_BreakChar_Mask;
+}
+
+/*******************************************************************************
+* Function Name : UART_RTSConfig
+* Description : Sets or Resets the RTS signal
+* Input : - LevelState: new state of the RTS signal for UART0 only.
+* This parameter can be: LowLevel or HighLevel
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_RTSConfig(UART_LevelTypeDef LevelState)
+{
+ if(LevelState == LowLevel)
+ {
+ UART0->CR |= UART_RTS_LowLevel_Mask;
+ }
+ else
+ {
+ UART0->CR &= UART_RTS_HighLevel_Mask;
+ }
+}
+
+/*******************************************************************************
+* Function Name : UART_DTRConfig
+* Description : Sets or Resets the DTR signal for UART0 only
+* Input : - LevelState: new state of the DTR signal.
+* This parameter can be: LowLevel or HighLevel
+* Output : None
+* Return : None
+*******************************************************************************/
+void UART_DTRConfig(UART_LevelTypeDef LevelState)
+{
+ if(LevelState == LowLevel)
+ {
+ UART0->CR |= UART_DTR_LowLevel_Mask;
+ }
+ else
+ {
+ UART0->CR &= UART_DTR_HighLevel_Mask;
+ }
+}
+/******************* (C) COPYRIGHT 2006 STMicroelectronics *****END OF FILE****/
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