diff options
Diffstat (limited to 'stm32lib/src/stm32f10x_usart.c')
| -rw-r--r-- | stm32lib/src/stm32f10x_usart.c | 1001 |
1 files changed, 0 insertions, 1001 deletions
diff --git a/stm32lib/src/stm32f10x_usart.c b/stm32lib/src/stm32f10x_usart.c deleted file mode 100644 index baf9c47..0000000 --- a/stm32lib/src/stm32f10x_usart.c +++ /dev/null @@ -1,1001 +0,0 @@ -/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
-* File Name : stm32f10x_usart.c
-* Author : MCD Application Team
-* Version : V2.0.2
-* Date : 07/11/2008
-* Description : This file provides all the USART firmware functions.
-********************************************************************************
-* THE PRESENT FIRMWARE 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 FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
-* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-*******************************************************************************/
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x_usart.h"
-#include "stm32f10x_rcc.h"
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* USART UE Mask */
-#define CR1_UE_Set ((u16)0x2000) /* USART Enable Mask */
-#define CR1_UE_Reset ((u16)0xDFFF) /* USART Disable Mask */
-
-/* USART WakeUp Method */
-#define CR1_WAKE_Mask ((u16)0xF7FF) /* USART WakeUp Method Mask */
-
-/* USART RWU Mask */
-#define CR1_RWU_Set ((u16)0x0002) /* USART mute mode Enable Mask */
-#define CR1_RWU_Reset ((u16)0xFFFD) /* USART mute mode Enable Mask */
-
-#define CR1_SBK_Set ((u16)0x0001) /* USART Break Character send Mask */
-
-#define CR1_CLEAR_Mask ((u16)0xE9F3) /* USART CR1 Mask */
-
-#define CR2_Address_Mask ((u16)0xFFF0) /* USART address Mask */
-
-/* USART LIN Mask */
-#define CR2_LINEN_Set ((u16)0x4000) /* USART LIN Enable Mask */
-#define CR2_LINEN_Reset ((u16)0xBFFF) /* USART LIN Disable Mask */
-
-/* USART LIN Break detection */
-#define CR2_LBDL_Mask ((u16)0xFFDF) /* USART LIN Break detection Mask */
-
-#define CR2_STOP_CLEAR_Mask ((u16)0xCFFF) /* USART CR2 STOP Bits Mask */
-#define CR2_CLOCK_CLEAR_Mask ((u16)0xF0FF) /* USART CR2 Clock Mask */
-
-/* USART SC Mask */
-#define CR3_SCEN_Set ((u16)0x0020) /* USART SC Enable Mask */
-#define CR3_SCEN_Reset ((u16)0xFFDF) /* USART SC Disable Mask */
-
-/* USART SC NACK Mask */
-#define CR3_NACK_Set ((u16)0x0010) /* USART SC NACK Enable Mask */
-#define CR3_NACK_Reset ((u16)0xFFEF) /* USART SC NACK Disable Mask */
-
-/* USART Half-Duplex Mask */
-#define CR3_HDSEL_Set ((u16)0x0008) /* USART Half-Duplex Enable Mask */
-#define CR3_HDSEL_Reset ((u16)0xFFF7) /* USART Half-Duplex Disable Mask */
-
-/* USART IrDA Mask */
-#define CR3_IRLP_Mask ((u16)0xFFFB) /* USART IrDA LowPower mode Mask */
-
-#define CR3_CLEAR_Mask ((u16)0xFCFF) /* USART CR3 Mask */
-
-/* USART IrDA Mask */
-#define CR3_IREN_Set ((u16)0x0002) /* USART IrDA Enable Mask */
-#define CR3_IREN_Reset ((u16)0xFFFD) /* USART IrDA Disable Mask */
-
-#define GTPR_LSB_Mask ((u16)0x00FF) /* Guard Time Register LSB Mask */
-#define GTPR_MSB_Mask ((u16)0xFF00) /* Guard Time Register MSB Mask */
-
-#define IT_Mask ((u16)0x001F) /* USART Interrupt Mask */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/*******************************************************************************
-* Function Name : USART_DeInit
-* Description : Deinitializes the USARTx peripheral registers to their
-* default reset values.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_DeInit(USART_TypeDef* USARTx)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
-
- switch (*(u32*)&USARTx)
- {
- case USART1_BASE:
- RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
- RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
- break;
-
- case USART2_BASE:
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
- break;
-
- case USART3_BASE:
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
- break;
-
- case UART4_BASE:
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, ENABLE);
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, DISABLE);
- break;
-
- case UART5_BASE:
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, ENABLE);
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, DISABLE);
- break;
-
- default:
- break;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_Init
-* Description : Initializes the USARTx peripheral according to the specified
-* parameters in the USART_InitStruct .
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_InitStruct: pointer to a USART_InitTypeDef structure
-* that contains the configuration information for the
-* specified USART peripheral.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct)
-{
- u32 tmpreg = 0x00, apbclock = 0x00;
- u32 integerdivider = 0x00;
- u32 fractionaldivider = 0x00;
- u32 usartxbase = 0;
- RCC_ClocksTypeDef RCC_ClocksStatus;
-
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_BAUDRATE(USART_InitStruct->USART_BaudRate));
- assert_param(IS_USART_WORD_LENGTH(USART_InitStruct->USART_WordLength));
- assert_param(IS_USART_STOPBITS(USART_InitStruct->USART_StopBits));
- assert_param(IS_USART_PARITY(USART_InitStruct->USART_Parity));
- assert_param(IS_USART_MODE(USART_InitStruct->USART_Mode));
- assert_param(IS_USART_HARDWARE_FLOW_CONTROL(USART_InitStruct->USART_HardwareFlowControl));
- /* The hardware flow control is available only for USART1, USART2 and USART3 */
- assert_param(IS_USART_PERIPH_HFC(USARTx, USART_InitStruct->USART_HardwareFlowControl));
-
- usartxbase = (*(u32*)&USARTx);
-
-/*---------------------------- USART CR2 Configuration -----------------------*/
- tmpreg = USARTx->CR2;
- /* Clear STOP[13:12] bits */
- tmpreg &= CR2_STOP_CLEAR_Mask;
-
- /* Configure the USART Stop Bits, Clock, CPOL, CPHA and LastBit ------------*/
- /* Set STOP[13:12] bits according to USART_StopBits value */
- tmpreg |= (u32)USART_InitStruct->USART_StopBits;
-
- /* Write to USART CR2 */
- USARTx->CR2 = (u16)tmpreg;
-
-/*---------------------------- USART CR1 Configuration -----------------------*/
- tmpreg = USARTx->CR1;
- /* Clear M, PCE, PS, TE and RE bits */
- tmpreg &= CR1_CLEAR_Mask;
-
- /* Configure the USART Word Length, Parity and mode ----------------------- */
- /* Set the M bits according to USART_WordLength value */
- /* Set PCE and PS bits according to USART_Parity value */
- /* Set TE and RE bits according to USART_Mode value */
- tmpreg |= (u32)USART_InitStruct->USART_WordLength | USART_InitStruct->USART_Parity |
- USART_InitStruct->USART_Mode;
-
- /* Write to USART CR1 */
- USARTx->CR1 = (u16)tmpreg;
-
-/*---------------------------- USART CR3 Configuration -----------------------*/
- tmpreg = USARTx->CR3;
- /* Clear CTSE and RTSE bits */
- tmpreg &= CR3_CLEAR_Mask;
-
- /* Configure the USART HFC -------------------------------------------------*/
- /* Set CTSE and RTSE bits according to USART_HardwareFlowControl value */
- tmpreg |= USART_InitStruct->USART_HardwareFlowControl;
-
- /* Write to USART CR3 */
- USARTx->CR3 = (u16)tmpreg;
-
-/*---------------------------- USART BRR Configuration -----------------------*/
- /* Configure the USART Baud Rate -------------------------------------------*/
- RCC_GetClocksFreq(&RCC_ClocksStatus);
- if (usartxbase == USART1_BASE)
- {
- apbclock = RCC_ClocksStatus.PCLK2_Frequency;
- }
- else
- {
- apbclock = RCC_ClocksStatus.PCLK1_Frequency;
- }
-
- /* Determine the integer part */
- integerdivider = ((0x19 * apbclock) / (0x04 * (USART_InitStruct->USART_BaudRate)));
- tmpreg = (integerdivider / 0x64) << 0x04;
-
- /* Determine the fractional part */
- fractionaldivider = integerdivider - (0x64 * (tmpreg >> 0x04));
- tmpreg |= ((((fractionaldivider * 0x10) + 0x32) / 0x64)) & ((u8)0x0F);
-
- /* Write to USART BRR */
- USARTx->BRR = (u16)tmpreg;
-}
-
-/*******************************************************************************
-* Function Name : USART_StructInit
-* Description : Fills each USART_InitStruct member with its default value.
-* Input : - USART_InitStruct: pointer to a USART_InitTypeDef structure
-* which will be initialized.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_StructInit(USART_InitTypeDef* USART_InitStruct)
-{
- /* USART_InitStruct members default value */
- USART_InitStruct->USART_BaudRate = 9600;
- USART_InitStruct->USART_WordLength = USART_WordLength_8b;
- USART_InitStruct->USART_StopBits = USART_StopBits_1;
- USART_InitStruct->USART_Parity = USART_Parity_No ;
- USART_InitStruct->USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_InitStruct->USART_HardwareFlowControl = USART_HardwareFlowControl_None;
-}
-
-/*******************************************************************************
-* Function Name : USART_ClockInit
-* Description : Initializes the USARTx peripheral Clock according to the
-* specified parameters in the USART_ClockInitStruct .
-* Input : - USARTx: where x can be 1, 2, 3 to select the USART peripheral.
-* Note: The Smart Card mode is not available for UART4 and UART5.
-* - USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef
-* structure that contains the configuration information for
-* the specified USART peripheral.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ClockInit(USART_TypeDef* USARTx, USART_ClockInitTypeDef* USART_ClockInitStruct)
-{
- u32 tmpreg = 0x00;
-
- /* Check the parameters */
- assert_param(IS_USART_123_PERIPH(USARTx));
- assert_param(IS_USART_CLOCK(USART_ClockInitStruct->USART_Clock));
- assert_param(IS_USART_CPOL(USART_ClockInitStruct->USART_CPOL));
- assert_param(IS_USART_CPHA(USART_ClockInitStruct->USART_CPHA));
- assert_param(IS_USART_LASTBIT(USART_ClockInitStruct->USART_LastBit));
-
-/*---------------------------- USART CR2 Configuration -----------------------*/
- tmpreg = USARTx->CR2;
- /* Clear CLKEN, CPOL, CPHA and LBCL bits */
- tmpreg &= CR2_CLOCK_CLEAR_Mask;
-
- /* Configure the USART Clock, CPOL, CPHA and LastBit ------------*/
- /* Set CLKEN bit according to USART_Clock value */
- /* Set CPOL bit according to USART_CPOL value */
- /* Set CPHA bit according to USART_CPHA value */
- /* Set LBCL bit according to USART_LastBit value */
- tmpreg |= (u32)USART_ClockInitStruct->USART_Clock | USART_ClockInitStruct->USART_CPOL |
- USART_ClockInitStruct->USART_CPHA | USART_ClockInitStruct->USART_LastBit;
-
- /* Write to USART CR2 */
- USARTx->CR2 = (u16)tmpreg;
-}
-
-/*******************************************************************************
-* Function Name : USART_ClockStructInit
-* Description : Fills each USART_ClockInitStruct member with its default value.
-* Input : - USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef
-* structure which will be initialized.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ClockStructInit(USART_ClockInitTypeDef* USART_ClockInitStruct)
-{
- /* USART_ClockInitStruct members default value */
- USART_ClockInitStruct->USART_Clock = USART_Clock_Disable;
- USART_ClockInitStruct->USART_CPOL = USART_CPOL_Low;
- USART_ClockInitStruct->USART_CPHA = USART_CPHA_1Edge;
- USART_ClockInitStruct->USART_LastBit = USART_LastBit_Disable;
-}
-
-/*******************************************************************************
-* Function Name : USART_Cmd
-* Description : Enables or disables the specified USART peripheral.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* : - NewState: new state of the USARTx peripheral.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_Cmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the selected USART by setting the UE bit in the CR1 register */
- USARTx->CR1 |= CR1_UE_Set;
- }
- else
- {
- /* Disable the selected USART by clearing the UE bit in the CR1 register */
- USARTx->CR1 &= CR1_UE_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_ITConfig
-* Description : Enables or disables the specified USART interrupts.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_IT: specifies the USART interrupt sources to be
-* enabled or disabled.
-* This parameter can be one of the following values:
-* - USART_IT_CTS: CTS change interrupt (not available for
-* UART4 and UART5)
-* - USART_IT_LBD: LIN Break detection interrupt
-* - USART_IT_TXE: Tansmit Data Register empty interrupt
-* - USART_IT_TC: Transmission complete interrupt
-* - USART_IT_RXNE: Receive Data register not empty
-* interrupt
-* - USART_IT_IDLE: Idle line detection interrupt
-* - USART_IT_PE: Parity Error interrupt
-* - USART_IT_ERR: Error interrupt(Frame error, noise
-* error, overrun error)
-* - NewState: new state of the specified USARTx interrupts.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ITConfig(USART_TypeDef* USARTx, u16 USART_IT, FunctionalState NewState)
-{
- u32 usartreg = 0x00, itpos = 0x00, itmask = 0x00;
- u32 usartxbase = 0x00;
-
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_CONFIG_IT(USART_IT));
- assert_param(IS_USART_PERIPH_IT(USARTx, USART_IT)); /* The CTS interrupt is not available for UART4 and UART5 */
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- usartxbase = (*(u32*)&(USARTx));
-
- /* Get the USART register index */
- usartreg = (((u8)USART_IT) >> 0x05);
-
- /* Get the interrupt position */
- itpos = USART_IT & IT_Mask;
-
- itmask = (((u32)0x01) << itpos);
-
- if (usartreg == 0x01) /* The IT is in CR1 register */
- {
- usartxbase += 0x0C;
- }
- else if (usartreg == 0x02) /* The IT is in CR2 register */
- {
- usartxbase += 0x10;
- }
- else /* The IT is in CR3 register */
- {
- usartxbase += 0x14;
- }
- if (NewState != DISABLE)
- {
- *(vu32*)usartxbase |= itmask;
- }
- else
- {
- *(vu32*)usartxbase &= ~itmask;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_DMACmd
-* Description : Enables or disables the USART’s DMA interface.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3 or UART4.
-* Note: The DMA mode is not available for UART5.
-* - USART_DMAReq: specifies the DMA request.
-* This parameter can be any combination of the following values:
-* - USART_DMAReq_Tx: USART DMA transmit request
-* - USART_DMAReq_Rx: USART DMA receive request
-* - NewState: new state of the DMA Request sources.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_DMACmd(USART_TypeDef* USARTx, u16 USART_DMAReq, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_1234_PERIPH(USARTx));
- assert_param(IS_USART_DMAREQ(USART_DMAReq));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the DMA transfer for selected requests by setting the DMAT and/or
- DMAR bits in the USART CR3 register */
- USARTx->CR3 |= USART_DMAReq;
- }
- else
- {
- /* Disable the DMA transfer for selected requests by clearing the DMAT and/or
- DMAR bits in the USART CR3 register */
- USARTx->CR3 &= (u16)~USART_DMAReq;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_SetAddress
-* Description : Sets the address of the USART node.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_Address: Indicates the address of the USART node.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SetAddress(USART_TypeDef* USARTx, u8 USART_Address)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_ADDRESS(USART_Address));
-
- /* Clear the USART address */
- USARTx->CR2 &= CR2_Address_Mask;
- /* Set the USART address node */
- USARTx->CR2 |= USART_Address;
-}
-
-/*******************************************************************************
-* Function Name : USART_WakeUpConfig
-* Description : Selects the USART WakeUp method.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_WakeUp: specifies the USART wakeup method.
-* This parameter can be one of the following values:
-* - USART_WakeUp_IdleLine: WakeUp by an idle line detection
-* - USART_WakeUp_AddressMark: WakeUp by an address mark
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_WakeUpConfig(USART_TypeDef* USARTx, u16 USART_WakeUp)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_WAKEUP(USART_WakeUp));
-
- USARTx->CR1 &= CR1_WAKE_Mask;
- USARTx->CR1 |= USART_WakeUp;
-}
-
-/*******************************************************************************
-* Function Name : USART_ReceiverWakeUpCmd
-* Description : Determines if the USART is in mute mode or not.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - NewState: new state of the USART mute mode.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ReceiverWakeUpCmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the USART mute mode by setting the RWU bit in the CR1 register */
- USARTx->CR1 |= CR1_RWU_Set;
- }
- else
- {
- /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
- USARTx->CR1 &= CR1_RWU_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_LINBreakDetectLengthConfig
-* Description : Sets the USART LIN Break detection length.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_LINBreakDetectLength: specifies the LIN break
-* detection length.
-* This parameter can be one of the following values:
-* - USART_LINBreakDetectLength_10b: 10-bit break detection
-* - USART_LINBreakDetectLength_11b: 11-bit break detection
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_LINBreakDetectLengthConfig(USART_TypeDef* USARTx, u16 USART_LINBreakDetectLength)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_LIN_BREAK_DETECT_LENGTH(USART_LINBreakDetectLength));
-
- USARTx->CR2 &= CR2_LBDL_Mask;
- USARTx->CR2 |= USART_LINBreakDetectLength;
-}
-
-/*******************************************************************************
-* Function Name : USART_LINCmd
-* Description : Enables or disables the USART’s LIN mode.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - NewState: new state of the USART LIN mode.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_LINCmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
- USARTx->CR2 |= CR2_LINEN_Set;
- }
- else
- {
- /* Disable the LIN mode by clearing the LINEN bit in the CR2 register */
- USARTx->CR2 &= CR2_LINEN_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_SendData
-* Description : Transmits single data through the USARTx peripheral.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - Data: the data to transmit.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SendData(USART_TypeDef* USARTx, u16 Data)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_DATA(Data));
-
- /* Transmit Data */
- USARTx->DR = (Data & (u16)0x01FF);
-}
-
-/*******************************************************************************
-* Function Name : USART_ReceiveData
-* Description : Returns the most recent received data by the USARTx peripheral.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* Output : None
-* Return : The received data.
-*******************************************************************************/
-u16 USART_ReceiveData(USART_TypeDef* USARTx)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
-
- /* Receive Data */
- return (u16)(USARTx->DR & (u16)0x01FF);
-}
-
-/*******************************************************************************
-* Function Name : USART_SendBreak
-* Description : Transmits break characters.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SendBreak(USART_TypeDef* USARTx)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
-
- /* Send break characters */
- USARTx->CR1 |= CR1_SBK_Set;
-}
-
-/*******************************************************************************
-* Function Name : USART_SetGuardTime
-* Description : Sets the specified USART guard time.
-* Input : - USARTx: where x can be 1, 2 or 3 to select the USART
-* peripheral.
-* Note: The guard time bits are not available for UART4 and UART5.
-* - USART_GuardTime: specifies the guard time.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SetGuardTime(USART_TypeDef* USARTx, u8 USART_GuardTime)
-{
- /* Check the parameters */
- assert_param(IS_USART_123_PERIPH(USARTx));
-
- /* Clear the USART Guard time */
- USARTx->GTPR &= GTPR_LSB_Mask;
- /* Set the USART guard time */
- USARTx->GTPR |= (u16)((u16)USART_GuardTime << 0x08);
-}
-
-/*******************************************************************************
-* Function Name : USART_SetPrescaler
-* Description : Sets the system clock prescaler.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* Note: The function is used for IrDA mode with UART4 and UART5.
-* - USART_Prescaler: specifies the prescaler clock.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SetPrescaler(USART_TypeDef* USARTx, u8 USART_Prescaler)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
-
- /* Clear the USART prescaler */
- USARTx->GTPR &= GTPR_MSB_Mask;
- /* Set the USART prescaler */
- USARTx->GTPR |= USART_Prescaler;
-}
-
-/*******************************************************************************
-* Function Name : USART_SmartCardCmd
-* Description : Enables or disables the USART’s Smart Card mode.
-* Input : - USARTx: where x can be 1, 2 or 3 to select the USART
-* peripheral.
-* Note: The Smart Card mode is not available for UART4 and UART5.
-* - NewState: new state of the Smart Card mode.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SmartCardCmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_123_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the SC mode by setting the SCEN bit in the CR3 register */
- USARTx->CR3 |= CR3_SCEN_Set;
- }
- else
- {
- /* Disable the SC mode by clearing the SCEN bit in the CR3 register */
- USARTx->CR3 &= CR3_SCEN_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_SmartCardNACKCmd
-* Description : Enables or disables NACK transmission.
-* Input : - USARTx: where x can be 1, 2 or 3 to select the USART
-* peripheral.
-* Note: The Smart Card mode is not available for UART4 and UART5.
-* - NewState: new state of the NACK transmission.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_SmartCardNACKCmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_123_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the NACK transmission by setting the NACK bit in the CR3 register */
- USARTx->CR3 |= CR3_NACK_Set;
- }
- else
- {
- /* Disable the NACK transmission by clearing the NACK bit in the CR3 register */
- USARTx->CR3 &= CR3_NACK_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_HalfDuplexCmd
-* Description : Enables or disables the USART’s Half Duplex communication.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - NewState: new state of the USART Communication.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_HalfDuplexCmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
- USARTx->CR3 |= CR3_HDSEL_Set;
- }
- else
- {
- /* Disable the Half-Duplex mode by clearing the HDSEL bit in the CR3 register */
- USARTx->CR3 &= CR3_HDSEL_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_IrDAConfig
-* Description : Configures the USART’s IrDA interface.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_IrDAMode: specifies the IrDA mode.
-* This parameter can be one of the following values:
-* - USART_IrDAMode_LowPower
-* - USART_IrDAMode_Normal
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_IrDAConfig(USART_TypeDef* USARTx, u16 USART_IrDAMode)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_IRDA_MODE(USART_IrDAMode));
-
- USARTx->CR3 &= CR3_IRLP_Mask;
- USARTx->CR3 |= USART_IrDAMode;
-}
-
-/*******************************************************************************
-* Function Name : USART_IrDACmd
-* Description : Enables or disables the USART’s IrDA interface.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - NewState: new state of the IrDA mode.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_IrDACmd(USART_TypeDef* USARTx, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- if (NewState != DISABLE)
- {
- /* Enable the IrDA mode by setting the IREN bit in the CR3 register */
- USARTx->CR3 |= CR3_IREN_Set;
- }
- else
- {
- /* Disable the IrDA mode by clearing the IREN bit in the CR3 register */
- USARTx->CR3 &= CR3_IREN_Reset;
- }
-}
-
-/*******************************************************************************
-* Function Name : USART_GetFlagStatus
-* Description : Checks whether the specified USART flag is set or not.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_FLAG: specifies the flag to check.
-* This parameter can be one of the following values:
-* - USART_FLAG_CTS: CTS Change flag (not available for
-* UART4 and UART5)
-* - USART_FLAG_LBD: LIN Break detection flag
-* - USART_FLAG_TXE: Transmit data register empty flag
-* - USART_FLAG_TC: Transmission Complete flag
-* - USART_FLAG_RXNE: Receive data register not empty flag
-* - USART_FLAG_IDLE: Idle Line detection flag
-* - USART_FLAG_ORE: OverRun Error flag
-* - USART_FLAG_NE: Noise Error flag
-* - USART_FLAG_FE: Framing Error flag
-* - USART_FLAG_PE: Parity Error flag
-* Output : None
-* Return : The new state of USART_FLAG (SET or RESET).
-*******************************************************************************/
-FlagStatus USART_GetFlagStatus(USART_TypeDef* USARTx, u16 USART_FLAG)
-{
- FlagStatus bitstatus = RESET;
-
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_FLAG(USART_FLAG));
- assert_param(IS_USART_PERIPH_FLAG(USARTx, USART_FLAG)); /* The CTS flag is not available for UART4 and UART5 */
-
- if ((USARTx->SR & USART_FLAG) != (u16)RESET)
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
- return bitstatus;
-}
-
-/*******************************************************************************
-* Function Name : USART_ClearFlag
-* Description : Clears the USARTx's pending flags.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_FLAG: specifies the flag to clear.
-* This parameter can be any combination of the following values:
-* - USART_FLAG_CTS: CTS Change flag (not available for
-* UART4 and UART5).
-* - USART_FLAG_LBD: LIN Break detection flag.
-* - USART_FLAG_TC: Transmission Complete flag.
-* - USART_FLAG_RXNE: Receive data register not empty flag.
-*
-* Notes:
-* - PE (Parity error), FE (Framing error), NE (Noise error),
-* ORE (OverRun error) and IDLE (Idle line detected)
-* flags are cleared by software sequence: a read
-* operation to USART_SR register (USART_GetFlagStatus())
-* followed by a read operation to USART_DR register
-* (USART_ReceiveData()).
-* - RXNE flag can be also cleared by a read to the
-* USART_DR register (USART_ReceiveData()).
-* - TC flag can be also cleared by software sequence: a
-* read operation to USART_SR register
-* (USART_GetFlagStatus()) followed by a write operation
-* to USART_DR register (USART_SendData()).
-* - TXE flag is cleared only by a write to the USART_DR
-* register (USART_SendData()).
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ClearFlag(USART_TypeDef* USARTx, u16 USART_FLAG)
-{
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_CLEAR_FLAG(USART_FLAG));
- assert_param(IS_USART_PERIPH_FLAG(USARTx, USART_FLAG)); /* The CTS flag is not available for UART4 and UART5 */
-
- USARTx->SR = (u16)~USART_FLAG;
-}
-
-/*******************************************************************************
-* Function Name : USART_GetITStatus
-* Description : Checks whether the specified USART interrupt has occurred or not.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_IT: specifies the USART interrupt source to check.
-* This parameter can be one of the following values:
-* - USART_IT_CTS: CTS change interrupt (not available for
-* UART4 and UART5)
-* - USART_IT_LBD: LIN Break detection interrupt
-* - USART_IT_TXE: Tansmit Data Register empty interrupt
-* - USART_IT_TC: Transmission complete interrupt
-* - USART_IT_RXNE: Receive Data register not empty
-* interrupt
-* - USART_IT_IDLE: Idle line detection interrupt
-* - USART_IT_ORE: OverRun Error interrupt
-* - USART_IT_NE: Noise Error interrupt
-* - USART_IT_FE: Framing Error interrupt
-* - USART_IT_PE: Parity Error interrupt
-* Output : None
-* Return : The new state of USART_IT (SET or RESET).
-*******************************************************************************/
-ITStatus USART_GetITStatus(USART_TypeDef* USARTx, u16 USART_IT)
-{
- u32 bitpos = 0x00, itmask = 0x00, usartreg = 0x00;
- ITStatus bitstatus = RESET;
-
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_GET_IT(USART_IT));
- assert_param(IS_USART_PERIPH_IT(USARTx, USART_IT)); /* The CTS interrupt is not available for UART4 and UART5 */
-
- /* Get the USART register index */
- usartreg = (((u8)USART_IT) >> 0x05);
-
- /* Get the interrupt position */
- itmask = USART_IT & IT_Mask;
-
- itmask = (u32)0x01 << itmask;
-
- if (usartreg == 0x01) /* The IT is in CR1 register */
- {
- itmask &= USARTx->CR1;
- }
- else if (usartreg == 0x02) /* The IT is in CR2 register */
- {
- itmask &= USARTx->CR2;
- }
- else /* The IT is in CR3 register */
- {
- itmask &= USARTx->CR3;
- }
-
- bitpos = USART_IT >> 0x08;
-
- bitpos = (u32)0x01 << bitpos;
- bitpos &= USARTx->SR;
-
- if ((itmask != (u16)RESET)&&(bitpos != (u16)RESET))
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
-
- return bitstatus;
-}
-
-/*******************************************************************************
-* Function Name : USART_ClearITPendingBit
-* Description : Clears the USARTx’s interrupt pending bits.
-* Input : - USARTx: Select the USART or the UART peripheral.
-* This parameter can be one of the following values:
-* - USART1, USART2, USART3, UART4 or UART5.
-* - USART_IT: specifies the interrupt pending bit to clear.
-* This parameter can be one of the following values:
-* - USART_IT_CTS: CTS change interrupt (not available for
-* UART4 and UART5)
-* - USART_IT_LBD: LIN Break detection interrupt
-* - USART_IT_TC: Transmission complete interrupt.
-* - USART_IT_RXNE: Receive Data register not empty interrupt.
-*
-* Notes:
-* - PE (Parity error), FE (Framing error), NE (Noise error),
-* ORE (OverRun error) and IDLE (Idle line detected)
-* pending bits are cleared by software sequence: a read
-* operation to USART_SR register (USART_GetITStatus())
-* followed by a read operation to USART_DR register
-* (USART_ReceiveData()).
-* - RXNE pending bit can be also cleared by a read to the
-* USART_DR register (USART_ReceiveData()).
-* - TC pending bit can be also cleared by software
-* sequence: a read operation to USART_SR register
-* (USART_GetITStatus()) followed by a write operation
-* to USART_DR register (USART_SendData()).
-* - TXE pending bit is cleared only by a write to the
-* USART_DR register (USART_SendData()).
-* Output : None
-* Return : None
-*******************************************************************************/
-void USART_ClearITPendingBit(USART_TypeDef* USARTx, u16 USART_IT)
-{
- u16 bitpos = 0x00, itmask = 0x00;
-
- /* Check the parameters */
- assert_param(IS_USART_ALL_PERIPH(USARTx));
- assert_param(IS_USART_CLEAR_IT(USART_IT));
- assert_param(IS_USART_PERIPH_IT(USARTx, USART_IT)); /* The CTS interrupt is not available for UART4 and UART5 */
-
- bitpos = USART_IT >> 0x08;
-
- itmask = (u16)((u16)0x01 << bitpos);
- USARTx->SR = (u16)~itmask;
-}
-
-/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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