uart1.h

easyARM8962 RS485通讯操作实验源码

/****************************************Copyright (c)**************************************************
**                               Guangzhou ZHIYUAN electronics Co.,LTD.
**                                     
**                                 http://www.embedtools.com
**
**--------------File Info-------------------------------------------------------------------------------
** File Name:               UART1.h
** Last modified Date:      2006-11-18
** Last Version:            v1.0
** Description:             串口驱动头文件
** 
**------------------------------------------------------------------------------------------------------
** Created By:              Zhou Shaogang
** Created date:            2006-11-18
** Version:                 v1.0
** Descriptions:
**
**--------------------------------------------------------------------------------------------------------
** Modified by:             Ni Likao 倪力考
** Modified date:           2007.11.07
** Version:                 v1.1
** Description:             对接收中断做了些修改,放弃之前的数据队列.
**
*********************************************************************************************************/
  
#ifndef __UART1_H__
#define __UART1_H__


extern uint8 ucBuffer[200];
extern uint8 ucBit;
extern uint8 ucNum;
/*********************************************************************************************************
** Function name:           UART1Init	   
** Descriptions:            该函数对UART1进行了初始化配置.                    
** input parameters:        ulBaudRate,ucPrio
** output parameters:       无      
** Returned value:          TRUE/FALSE 
** Created By:              Zhou Shaogang
** Created date:            2006.11.18
**--------------------------------------------------------------------------------------------------------
** Modified by:             Ni Likao 倪力考
** Modified date:           2007.11.07
**--------------------------------------------------------------------------------------------------------
*********************************************************************************************************/
extern uint8 UART1Init(uint32  ulBaudRate, uint8  ucPrio);


/*********************************************************************************************************
** Function name:           UART1Send	   
** Descriptions:            该函数为RS485发送函数.                    
** input parameters:        *pucBuffer,ucByte
** output parameters:       无      
** Returned value:          无 
** Created By:              Zhou Shaogang
** Created date:            2006.11.18
**--------------------------------------------------------------------------------------------------------
** Modified by:             Ni Likao 倪力考
** Modified date:           2007.11.07
**--------------------------------------------------------------------------------------------------------
*********************************************************************************************************/
extern void UART1Send(uint8  *pucBuffer, uint16  ucByte);

/*********************************************************************************************************
  宏定义，设置FIFO的收发深度 
*********************************************************************************************************/
#ifndef UART_O_IFLS
#define UART_O_IFLS  0x00000034  
#endif

#define UARTFifoLevelSet(ulBase, RecLvl, TraLvl) HWREG(ulBase + UART_O_IFLS) = (HWREG(ulBase + UART_O_IFLS) & 0xFFFFFFC0) | (RecLvl<<3) | TraLvl

/*********************************************************************************************************
  宏定义，检查发送FIFO是否为空
*********************************************************************************************************/
#ifndef UART_O_FR
#define UART_O_FR  0x00000018  
#endif
#ifndef UART_FR_TXFE
#define UART_FR_TXFE 0x00000080  
#endif
#define UARTTraFifoEmp(ulBase) ( (HWREG(ulBase + UART_O_FR) & UART_FR_TXFE) ? true : false )
#endif