uart.h

关于 modbus tcp 的一些源代码

/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
* File Name          : uart.h
* Author             : MCD Application Team
* Date First Issued  : 16/05/2003
* Description        : This file contains all the functions prototypes for the
*                      UART software library.
********************************************************************************
* History:
*  13/01/2006 : V3.1
*  24/05/2005 : V3.0
*  30/11/2004 : V2.0
*  14/07/2004 : V1.3
*  01/01/2004 : V1.2
*******************************************************************************
 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.
*******************************************************************************/
#ifndef _UART_H
#define _UART_H

#include "71x_map.h"
#include "rccu.h"

typedef enum
{
  UART_RxFIFO,
  UART_TxFIFO
} UARTFIFO_TypeDef;

typedef enum
{
  UART_EVEN_PARITY = 0x0000,
  UART_ODD_PARITY  = 0x0020,
  UART_NO_PARITY  = 0x0000 
} UARTParity_TypeDef;

typedef enum
{
  UART_0_5_StopBits  = 0x00,
  UART_1_StopBits    = 0x08,
  UART_1_5_StopBits  = 0x10,
  UART_2_StopBits    = 0x18
} UARTStopBits_TypeDef;

typedef enum
{
  UARTM_8D   = 0x01,
  UARTM_7D_P = 0x03,
  UARTM_9D   = 0x04,
  UARTM_8D_W = 0x05,
  UARTM_8D_P = 0x07
} UARTMode_TypeDef;


/* UART flags definition */
#define UART_TxFull          0x0200
#define UART_RxHalfFull      0x0100
#define UART_TimeOutIdle     0x0080
#define UART_TimeOutNotEmpty 0x0040
#define UART_OverrunError    0x0020
#define UART_FrameError      0x0010
#define UART_ParityError     0x0008
#define UART_TxHalfEmpty     0x0004
#define UART_TxEmpty         0x0002
#define UART_RxBufFull       0x0001


/*******************************************************************************
* Function Name  : UART_Init
* Description    : This function initializes the selected UART registers to 
*                  their reset values
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Output         : None
* Return         : None
*******************************************************************************/
void UART_Init(UART_TypeDef *UARTx);

/*******************************************************************************
* Function Name  : UART_ModeConfig
* Description    : This function configures the mode of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : The UART mode, it can be
*                  UARTM_8D 	for 8-bit data format
*                  UARTM_7D_P 	for 7-bit data + parity format
*                  UART_9D 	for 9-bit data format
*                  UART_8D_W	for 8-bit data + wake-up bit format
*                  UART_8D_P	for 8-bit data + parity bit format 
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_ModeConfig(UART_TypeDef *UARTx, UARTMode_TypeDef UART_Mode)
{
  UARTx->CR = (UARTx->CR&0xFFF8)|(u16)UART_Mode;
}

/*******************************************************************************
* Function Name  : UART_BaudRateConfig
* Description    : This function configures the baud rate of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : The baudrate value
* Output         : None
* Return         : None
*******************************************************************************/
void UART_BaudRateConfig(UART_TypeDef *UARTx, u32 BaudRate);

/*******************************************************************************
* Function Name  : UART_ParityConfig
* Description    : This function configures the data parity of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The parity type, it can be UART_EVEN_PARITY, UART_ODD_PARITY
*                  or UART_NO_PARITY
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_ParityConfig(UART_TypeDef *UARTx, UARTParity_TypeDef Parity)
{
  UARTx->CR = (UARTx->CR&0xFFDF)|(u16)Parity;
}

/*******************************************************************************
* Function Name  : UART_StopBitsConfig
* Description    : This function configures the number of stop bits of the
*                  selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : The number of stop bits, it can be
*                  UART_0_5_StopBits	for 0.5 stop bit
*                  UART_1_StopBits	for 1 stop bit, 
*                  UART_1_5_StopBits 	for 1.5 stop bits
*	           UART_2_StopBits	for 2 stop bits
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_StopBitsConfig(UART_TypeDef *UARTx, UARTStopBits_TypeDef StopBits)
{
  UARTx->CR = (UARTx->CR&0xFFE7)|(u16)StopBits;
}

/*******************************************************************************
* Function Name  : UART_Config
* Description    : This function configures the baudrate, the mode, the data
*                  parity and the number of stop bits of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : u32 The baudrate value
* Input 3        : The parity type, it can be UART_EVEN_PARITY, UART_ODD_PARITY
*		   or UART_NO_PARITY
* Input 4        : The number of stop bits UART_0_5_StopBits, UART_1_StopBits, 
*                  UART_1_5_StopBits or UART_2_StopBits
* Input 5        : The UART mode, it can be
*                  UARTM_8D 	for 8-bit data format
*                  UARTM_7D_P 	for 7-bit data + parity format
*                  UART_9D 	for 9-bit data format
*                  UART_8D_W	for 8-bit data + wake-up bit format
*                  UART_8D_P	for 8-bit data + parity bit format   
* Output         : None
* Return         : None
*******************************************************************************/
void UART_Config(UART_TypeDef *UARTx, u32 BaudRate, UARTParity_TypeDef Parity,
                 UARTStopBits_TypeDef StopBits, UARTMode_TypeDef Mode);

/*******************************************************************************
* Function Name  : UART_ItConfig
* Description    : This function enables or disables one or several interrupt
*                  sources of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : The new interrupt flag or flags  
* Input 3        : ENABLE or DISABLE
* Output         : None
* Return         : None
* Note           : The UART interrupt flags are listed in the file uart.h
*******************************************************************************/
void UART_ItConfig(UART_TypeDef *UARTx, u16 UART_Flag, FunctionalState NewState);

/*******************************************************************************
* Function Name  : UART_FifoConfig
* Description    : This function enables or disables the Rx and Tx FIFOs of
*                  the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : ENABLE or DISABLE
* Output         : None
* Return         : None
*******************************************************************************/
void UART_FifoConfig(UART_TypeDef *UARTx, FunctionalState NewState);

/*******************************************************************************
* Function Name  : UART_FifoReset
* Description    : This function resets the Rx and the Tx FIFOs of the
*                  selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the selected UART
* Input 2        : RxFIFO or TxFIFO
* Output         : None
* Return         : None