main.c

meg16 的所有功能实例

/****************************************Copyright (c)**************************************************
**                               ADEmbed Development Co.,LTD.                                    
**                                 http://www.adembed.com
**--------------File Info-------------------------------------------------------------------------------
** File name:			main.c
** Last modified Date:  2008-12-13
** Last Version:		1.0
** Descriptions:		UART Echo Test.
** 
**------------------------------------------------------------------------------------------------------
** Created by:			junbolu
** Created date:		2008-12-13
** Version:				1.0
** Descriptions:		
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
**------------------------------------------------------------------------------------------------------
**ICC-AVR application builder : 2008-12-13
**Target : M16
**Crystal: 7.3728Mhz
*******************************************************************************************************/

#include <iom16v.h>
#include <macros.h>
#include "main.h"
#include "Define.h"

unsigned char GET_Rx;
unsigned char GET_RxNum;
unsigned char GET_RxBUF[10];

void Uart_Init(void); 
void USART_TXD(uint8 data);
 
void main(void)
{
 Uart_Init();                 //TART初始化
 SEI();                       //全局中断使能
 
 GET_Rx=False;
 for(;;)
     {
     if(GET_Rx==True)
 	     {
		 USART_TXD(GET_RxBUF[0]);
		 GET_Rx=False;
   		 } 
     }
}

//===============================================================
void Uart_Init(void)          //UART初始化
  { 
     
    //设置侦格式
	//异步，8位数据，无奇偶校验，一个停止位，无倍速
	UCSRC=(1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);
	
    //设置波特率
    UBRRL= (F_osc/Baud_rate/16-1)%256;
    UBRRH= (F_osc/Baud_rate/16-1)/256;

	//使能接收中断，使能接收，使能发送
    UCSRB = (1<<RXCIE)|(1<<RXEN)|(1<<TXEN);
  }
  

//===============================================================
void USART_TXD(uint8 data) //发送采用查询方式
{
	while( !(UCSRA & BIT(UDRE)) );
	UDR=data;
	while( !(UCSRA & BIT(TXC )) );
	UCSRA|=BIT(TXC);
}

//=======================================================================

#pragma interrupt_handler USART_RXC:12
void USART_RXC(void)
{
 GET_RxBUF[0]=UDR;
 GET_Rx=True;
}