uart
#include "S3C2451_uart.h"
#include "S3C2451_vector.h"
#include
#include
#include
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 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; } }