main.c

这是在S3C44B0的开发平台下的串口0的试验

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

#define KEY_BUFLEN 100

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

void __irq Uart1_RxInt(void);
void __irq Uart1_TxInt(void);

char Uart_IntGetkey(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;
static char *uart1TxStr;


void Main(void)
{
    U8 aa;		
    int key;

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

    Isr_Init();
    Port_Init();
    Uart_Init(0,115200);
    Uart_Select(0);
    Delay(0);  //calibrate Delay()
    Led_Display(7);
    Delay(1000);  //calibrate Delay()
    Led_Display(0);
    Delay(5000);  //calibrate Delay()
    Led_Display(7);

    keyBufRdPt=keyBufWrPt=0;
    pISR_UTXD1=(unsigned)Uart1_TxInt;
    pISR_URXD1=(unsigned)Uart1_RxInt;
   
    /*********** UART1 Tx test with interrupt ***********/  
    Uart_Printf("[Uart channel 1 tx Interrupt Test]\n");
    Uart_Printf("Plug the serial cable into ch1 connector!!! \n");
    Uart_Printf("Then, press any key through UART ch1.\n");
    Uart_Select(1);
    Uart_Getch();

    uart1TxStr="UART1 Tx interrupt test is good!!!!\r\n";
    rINTMSK=~(BIT_GLOBAL|BIT_UTXD1);
//  rUCON1 &= 0x3f3;   
//  rUCON1 |= 0x4;  //needed to set the UTXD0 pending bit.
    rUCON1 = 0x244; //rx:edge,tx:level,error int,normal*2,interrupt(Start)
    Delay(3000);

    /*********** UART1 Tx test with BDMA1 ***********/
    rUCON1 = 0x245;

    Uart_Printf("\n[Uart1 Tx Test by BDMA1]\n");
    uart1TxStr="UART1 Tx Test by BDMA1 is good!!!!\r\n";
    Uart_TxEmpty(1);

    rUCON1=0x4c;    //tx:BDMA0 rx:disable

    rBDICNT1=0x0;
    rBDCON1 =0x0;
    rBDISRC1=(unsigned int)uart1TxStr|(0<<30)|(1<<28);  // byte,inc
    rBDIDES1=UTXH1 |(1<<30)|(3<<28);  //L/B endian,M2IO,fix   
    rBDICNT1=strlen(uart1TxStr)|(1<<31)|(1<<26)|(1<<20); //UART1,

    while(!((rBDCON1&0x30)==0x20));
    Uart_TxEmpty(1);

    /*********** UART1 Rx test with interrupt ***********/
    rUCON1=0x45;    //tx:int rx:int
    Uart_Printf("\n[Uart channel 1 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_URXD1);

    keyBufRdPt=keyBufWrPt=0;    
    while((key=Uart_IntGetkey())!='\r')
        Uart_SendByte(key);

    rINTMSK=~BIT_GLOBAL;
    Uart_Printf("\n");

    Uart_Printf("Plug the serial cable into ch0 as before this test!!!\n");
    Uart_Printf("Then, press any key through UART ch 0.\n");
    Uart_Select(0);
    Uart_Getch();

}


void __irq Uart1_RxInt(void)
{
    rI_ISPC=BIT_URXD1;

    keyBuf[keyBufWrPt++]=RdURXH1();
    if(keyBufWrPt==KEY_BUFLEN)
	keyBufWrPt=0;
}

void __irq Uart1_TxInt(void)
{
//    rI_ISPC=BIT_UTXD1;

    if(*uart1TxStr != '\0')
    {
	WrUTXH1(*uart1TxStr++);
	rI_ISPC=BIT_UTXD1;
    }
    else
    {
	rUCON1 &= 0x3f3;//workaround
	rI_ISPC=BIT_UTXD1;
	rINTMSK|=BIT_UTXD1;
    }
}

char Uart_IntGetkey(void)
{
    if(keyBufRdPt==KEY_BUFLEN)
	keyBufRdPt=0;

    while(keyBufWrPt==keyBufRdPt);  //until FIFO is triggered
    return keyBuf[keyBufRdPt++];
}


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);
}