S3C 2440 Uart (miniarm 2440 )

#ifndef UART_H #define UART_H #include "2440addr.h" void UartInit(u32 baud); void UartSendChar(u8 c); void UartSendStr(char *str); char UartGetChar(void); void UartPrintf(char *fmt,...); #endif

 

 

uart.c

 

 

#include "uart.h" void UartInit(u32 baud) { rUBRDIV0 = (int)(PCLK/baud/16.0)-1; // rULCON0: //bit7 Reserved //bit6 Infrared Mode // 0 = Normal // 1 = Infrared //bit5:3 Parity Mode // 0xx = No Parity // 100 = ODD Parity // 101 = EVEN Parity // 110 = Parity Forced / Checked as 1 // 111 = Parity Forced / Checked as 0 //bit2 number Of Stop bit // 0 = one stop bit per frame // 1 = two stop bit per frame //bit1:0 Word Length // 00 = 5bits 01 = 6bits // 10 = 7bits 11 = 8bits rULCON0 = 0x03; rUCON0 = 0x245; } void UartSendChar(u8 c) { while(! (rUTRSTAT0 &0x02)); rUTXH0 = c; } void UartSendStr(char *str) { while(*str !='/0') UartSendChar(*str++); } char UartGetChar(void) { while(!(rUTRSTAT0 & 0x01)); return rURXH0; } void UartPrintf(char *fmt,...) { va_list ap; char string[256]; va_start(ap,fmt); vsprintf(string,fmt,ap); UartSendStr(string); va_end(ap); }