3.18

#include "S3C2451_uart.h"
#include "S3C2451_vector.h"
#include <stdarg.h>
#include <stdio.h>
#include <string.h>


UART_MemMapPtr const UART_BASE_PTR[4] = {UART0_BASE_PTR,UART1_BASE_PTR,UART2_BASE_PTR,UART3_BASE_PTR};


void UART_Init(UART_Typedef uartx,UART_Init_Typedef uart_init_struct)
{
UART_BASE_PTR[uartx]->ULCON &= ~(0x3F);
//wordwidth
UART_BASE_PTR[uartx]->ULCON |= uart_init_struct.wordwidth;
//stop
UART_BASE_PTR[uartx]->ULCON |= (uart_init_struct.stop<<2);
//parity
UART_BASE_PTR[uartx]->ULCON |= (uart_init_struct.parity<<3);
//baud
if( 9600 == uart_init_struct.baudrate)
{
UART_BASE_PTR[uartx]->UBRDIV = 10;
UART_BASE_PTR[uartx]->UDIVSLOT = 0xeeeee;
}else if(115200 == uart_init_struct.baudrate)
{
UART_BASE_PTR[uartx]->UBRDIV = 34; //pclk=66.5Mhz
UART_BASE_PTR[uartx]->UDIVSLOT = 0xDFDD;
}

UART_BASE_PTR[uartx]->UCON &= ~(0x0f);
//enable tx
if((uart_init_struct.mode&UART_Mode_TX) == UART_Mode_TX)
{
UART_BASE_PTR[uartx]->UCON |= (1<<2);
}
//enable rx
if((uart_init_struct.mode&UART_Mode_RX) == UART_Mode_RX)
{
UART_BASE_PTR[uartx]->UCON |= 1;
}


}


void UART_SendData(UART_Typedef uartx,U8 data)
{
UART_BASE_PTR[uartx]->UTXH = data;
while(!(UART_BASE_PTR[uartx]->UTRSTAT&0x04));
}


void UART_SendDataBuf(UART_Typedef uartx,U8 *data,U32 len)
{
unsigned char i;
for(i=0;i<len;i++){
UART_SendData(uartx,data[i]);
}
}


void UART_SendString(UART_Typedef uartx,U8 *s)
{
U32 len = strlen((char*)s);
UART_SendDataBuf(uartx,s,len);
}


void UART_Printf(char *fmt,...)
{
va_list ap;
char string[1024];


va_start(ap,fmt);
vsprintf(string,fmt,ap);
va_end(ap);


UART_SendString(UART0,(U8 *)string); 
}


U8 UART_ReceiveData(UART_Typedef uartx)
{
//while(!(UART_BASE_PTR[uartx]->UTRSTAT&0x01));
return (UART_BASE_PTR[uartx]->URXH);
}


void UART_IRQService_Init(UART_Typedef uartx,U32 addr)
{
switch(uartx)
{
case UART0:
pISR_UART0 = addr;
break;
case UART1:
pISR_UART1 = addr;
break;
case UART2:
pISR_UART2 = addr;
break;
case UART3:
pISR_UART3 = addr;
break;
}
}