main.c

44b0串口中断程序代码

#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"

#define KEY_BUFLEN 100
#define AFC_BUFLEN 0x100
#define IrDA_BUFLEN 0x100

void Isr_Init(void);
void HaltUndef(void);
void HaltSwi(void);
void HaltPabort(void);      
void HaltDabort(void);

char Uart_IntGetkey(void);

void __irq Uart0_TxFifoInt(void);
void __irq Uart0_RxFifoInt(void);
void __irq Uart0_RxFifoErrorInt(void);

static unsigned char keyBuf[KEY_BUFLEN];
volatile static int IrDA_BAUD,keyBufRdPt=0;
volatile static int keyBufWrPt=0;
volatile char out=1;
static char *uart0TxStr;

void Main(void)
{
    U8 aa;		
    int key=0;
int mm,ms;

    rSYSCFG=SYSCFG_8KB;
#if (PLLON==1)
    ChangePllValue(PLL_M,PLL_P,PLL_S);
#endif

    Isr_Init();
    Port_Init();
    Uart_Init(0,57600);
    Uart_Select(0);
  
    Uart_Printf("\n*                            杭州莱顿电子                               *");
	Uart_Printf("\n*                     -S3C44B0X功能部件:串口0实验fifo测试-              *");
	Uart_Printf("\n*                            Version 1.1                                *");    
	Uart_Printf("\n*                        COPYRIGHT OF JINJIE                           *");
	Uart_Printf("\n*             UART Config--COM:115.2kbps,8Bit,NP,UART0                  *");
	
    Uart_Printf("\n");
    

    keyBufRdPt=keyBufWrPt=0;
    pISR_UTXD0=(unsigned)Uart0_TxFifoInt;
    pISR_URXD0=(unsigned)Uart0_RxFifoInt;
    pISR_UERR01=(unsigned)Uart0_RxFifoErrorInt;

 
    /*********** UART0 Rx FIFO test with interrupt ***********/ 
    rUCON0=0x245|0x80;						//tx:level,rx:edge,tx/rx:int,rcv_time_out enabled,error int enable

    Uart_Printf("\n[Uart channel 0 FIFO Rx Interrupt Test]:Type any key!!!\n");
    Uart_Printf("You have to see the typed character. To quit, press Enter key.\n");

    rINTMSK=~(BIT_GLOBAL|BIT_URXD0|BIT_UERR01);

    while( (rUFSTAT0&0xf) >0 )
        key=RdURXH0();  						//To clear the Rx FIFO
   								

    
    while(1)
    {
        Led_Display(0x01);
        for(mm=0;mm<2000;mm++)
		for(ms=0;ms<400;ms++);
	Led_Display(0x01<<1);
	for(mm=0;mm<2000;mm++)
		for(ms=0;ms<400;ms++);




    }  
	
    
}


void __irq Uart0_RxFifoInt(void)
{
    rI_ISPC=BIT_URXD0;
    while( (rUFSTAT0&0xf) >0 )	    				//until FIFO is empty
    {
	keyBuf[keyBufWrPt++]=rURXH0;				//rx buffer->keyBuf[]
	if(keyBufWrPt==KEY_BUFLEN)
	    keyBufWrPt=0;
    }
	Uart_SendByte(keyBuf[keyBufWrPt-1]);			//Print the letter receive just now

        Led_Display(0x07);
        Delay(2000);
        Led_Display(0x00);
        Delay(2000);
        Led_Display(0x07);
        Delay(2000);
        Led_Display(0x00);
        Delay(2000);
        Led_Display(0x07);
        Delay(2000);
        Led_Display(0x00);
        Delay(2000);
        Led_Display(0x07);
        Delay(2000);
        Led_Display(0x00);
        Delay(2000);

}


void __irq Uart0_RxFifoErrorInt(void)
{
    rI_ISPC=BIT_UERR01;

    switch(rUERSTAT0)						//to clear and check the status of register bits
    {
	case '1':
	    Uart_Printf("Overrun error\n");
	    break;
	case '2':
	    Uart_Printf("Parity error\n");
	    break;
	case '4':
	    Uart_Printf("Frame error\n");
	    break;
	case '8':
	    Uart_Printf("Breake detect\n");
	    break;
	default :
	    break;
    }
    while( (rUFSTAT0&0xf) >0 )
    {
	    keyBuf[keyBufWrPt++]=rURXH0;
	    if(keyBufWrPt==KEY_BUFLEN)
		    keyBufWrPt=0;
    }
}

void Isr_Init(void)
{
    U32 i;
    
    pISR_UNDEF=(unsigned)HaltUndef;
    pISR_SWI  =(unsigned)HaltSwi;
    pISR_PABORT=(unsigned)HaltPabort;
    pISR_DABORT=(unsigned)HaltDabort;
    
     for(i=_RAM_STARTADDRESS;i<(_RAM_STARTADDRESS+0x20);i+=4)
    {
	*((volatile unsigned *)i)=0xEA000000+0x1FFE;
    }

    								//rINTCON=0x1;	  // Vectored Int. IRQ enable,FIQ disable    
    rINTCON=0x5;	  						// Non-vectored,IRQ enable,FIQ disable    

    rINTMOD=0x0;	  						// All=IRQ mode
    rINTMSK|=BIT_GLOBAL|BIT_EINT3;	  				// All interrupt is masked.
}


void HaltUndef(void)
{
    Uart_Printf("Undefined instruction exception!!!\n");
    //while(1);
}

void HaltSwi(void)
{
    Uart_Printf("SWI exception!!!\n");
    //while(1);
}

void HaltPabort(void)
{
    Uart_Printf("Pabort exception!!!\n");
    //while(1);
}

void HaltDabort(void)
{
    Uart_Printf("Dabort exception!!!\n");
    //while(1);
}