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/******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
* File Name : 91x_uart.c |
* Author : MCD Application Team |
* Version : V2.1 |
* Date : 12/22/2008 |
* Description : This file provides all the UART firmware functions. |
******************************************************************************** |
* 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 =0; |
|
switch(IrDAx) |
{ |
case IrDA0: UARTx = UART0; |
break; |
case IrDA1: UARTx = UART1; |
break; |
case IrDA2: UARTx = UART2; |
break; |
default : 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 =0; |
u32 APBClock; |
switch(IrDAx) |
{ |
case IrDA0: UARTx = UART0; |
break; |
case IrDA1: UARTx = UART1; |
break; |
case IrDA2: UARTx = UART2; |
break; |
default : 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 = 0; |
|
switch(IrDAx) |
{ |
case IrDA0: UARTx = UART0; |
break; |
case IrDA1: UARTx = UART1; |
break; |
case IrDA2: UARTx = UART2; |
break; |
default : 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 2008 STMicroelectronics *****END OF FILE****/ |