| /******************** (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****/ |