serial_con.c

Ｆ２８１２的串口通信

#include "stdio.h"
#include "F2812reg.h"
#include "device.h"

 Uint16 a,b;
#pragma DATA_SECTION(PieVectTable,"PieVectTable");
struct PIE_VECT_TABLE PieVectTable;


void initcpu()
{   
   	asm("	EALLOW");	
  	WDCR=0x068;               //禁止看门狗
   // PLLCR=0x0004;              //CPU时钟为OSCCLK*4/2  30m
    PLLCR=0x000A;              //CPU时钟为OSCCLK*10/2  12m
    PCLKCR=0x5D0B;            //外设时钟使能
    HISPCP=0x0000;            //配置外设时钟HSPCLK=60M/1=60M
    LOSPCP=0x0001;            //配置外设时钟LSPCLK=60M/2=30M
    asm("	EDIS");	
} 

void initgpio()
{   
    asm("	EALLOW");
     GPFMUX=0x003f;               //配置GPIOF中的SCI,SPI口为外设模式  
     GPGMUX=0x0030;              // 配置GPIOG中的SCIB
    asm("	EDIS");	
}     
void initpiectrl()
{
      
     asm("	EALLOW");
     PIECTRL=0x0001;          //配置PIE向量表
     PIEACK=0xffff;
     PIEIFR9=0x0000;
     PIEIER9=0x0004;           //使能SCIB 接收中断
                  
      asm("	EDIS");	

}    
/*******************************************************/       
void initsci()
{              
       SCICCRB=0x0007;            //一个停止位，无校验，8位字符
       SCICTL1B=0x0003;           //使能发送与接收
       SCICTL2B=0x0002;           //禁止发送TXRDY中断，使能接收RXRDY中断
       SCIHBAUDB=0x01;
       SCILBAUDB=0x086;          //波特率为9600
       SCICTL1B=0x0023;
       
       
} 
/************************************************************/
main()
{
 
	asm("	EALLOW");						
	asm("	CLRC DBGM");               // 调试使能
	asm("	SETC OVM");                // 溢出模式
	asm("	SETC SXM");                 //符号扩展
	asm("	SETC OBJMODE");              //C28x模式
	asm("	SETC VMAP");                //使能PIE向量
	asm("	EDIS");	
	DINT;

	initcpu();
	initgpio();		
    initpiectrl();
	InitPieVectTable();
	initsci();

  	
 	asm("	EALLOW");
	asm("	AND IFR,#0000H");
	asm("	OR IER,#0100H");                //使能INT9中断   
	asm("	EDIS");	      	
  	EINT;
  	
     asm("	EALLOW");	
   PieVectTable.RXBINT=&SCIRXINTB_ISR;
    asm("	EDIS");	
  
 
    while(1)
    {//SCITXBUFB=0x55;
    }
   
   
  
 
		
}