main.c

S3C2410底层keil版--UART

/*********************************************************************************************
* File：	main.c
* Author:	embest
* Desc：	c main entry
* History:	
*********************************************************************************************/

/*------------------------------------------------------------------------------------------*/
/*                                     includes files	                                    */
/*------------------------------------------------------------------------------------------*/
#include "2410lib.h"

char  isDone=0;
int AFC_BUFLEN=100;
char * txdataFl;
char * txdataPt;

char  tx_cnt=0;
char  tx_end=0;

//extern const UINT8T g_ucWave[155760] ;

void __irq Uart0_AfcTx(void)
{
    rINTSUBMSK|=(BIT_SUB_RXD0|BIT_SUB_TXD0|BIT_SUB_ERR0);



    if(tx_cnt<AFC_BUFLEN)
    {
    //	Uart_Printf("%d,",*txdataPt);
	    while((rUFSTAT0 & 0xF0)>0x30);
    	WrUTXH0(*txdataPt++);
		isDone=*txdataPt;
    	tx_cnt++;
        ClearPending(BIT_UART0);
        rSUBSRCPND=(BIT_SUB_TXD0);
        rINTSUBMSK&=~(BIT_SUB_TXD0);
    }
    else
    {
   	tx_end=1;
        while(rUFSTAT0 & 0x2f1);	//Until FIFO is empty
        ClearPending(BIT_UART0);
        rSUBSRCPND=(BIT_SUB_TXD0);
    	rINTMSK|=BIT_UART0;
    }
}

init_uart()
{
 //   char i;
    /*********** UART0 Tx test with DMA0 ***********/ 
    char uart0TxStr[]={"ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890->UART0 Tx Test by DMA0 is good!!!!\r\n"};
   
	txdataFl=(char *)uart0TxStr;
    txdataPt=(char *)uart0TxStr;
    pISR_UART0=(unsigned) Uart0_AfcTx;

    rULCON0=(0<<6)|(0<<3)|(0<<2)|(3);	// Normal,No parity,One stop bit, 8bit
    rUCON0 &= 0x400;	// For the PCLK <-> UCLK fuction    
    rUCON0 |= (1<<9)|(1<<8)|(0<<7)|(0<<6)|(0<<5)|(0<<4)|(1<<2)|(1);
    //Clock,Tx:Lev,Rx:Lev,Rx timeout:x,Rx error int:x,Loop-back:x,Send break:x,Tx:int,Rx:int
    rUFCON0=(1<<6)|(0<<4)|(1<<2)|(1<<1)|(1);
    //Tx and Rx FIFO Trigger Level:4byte,Tx and Rx FIFO Reset,FIFO on
    rUMCON0=0x10;   // Enable Uart0 AFC 
    rINTMSK=~(BIT_UART0);
    rINTSUBMSK=~(BIT_SUB_RXD0|BIT_SUB_TXD0|BIT_SUB_ERR0);

    while(!tx_end);
}

/*********************************************************************************************
* name:		main
* func:		memory test
* para:		none
* ret:		none
* modify:
* comment:		
*********************************************************************************************/
int main(int argc,char **argv)
{
	sys_init();        /* Initial s3c2410's Clock, MMU, Interrupt,Port and UART */

    init_uart();

}