#include <stdio.h>
void Uart_Init(void)
{
#define rULCON0 (*(volatile unsigned int*)0x50000000)
#define rUCON0 (*(volatile unsigned int*)0x50000004)
#define rUBRDIV0 (*(volatile unsigned int*)0x50000028)
#define PCLK 50000000
#define BUADRATE 115200
rULCON0 = 0x03; //No parity, One stop bit, 8-bits data
rUCON0 = 0x05; //Tx Enable, Rx Enable, PCLK as source clock
rUBRDIV0 = (int)(PCLK / (BUADRATE * 16)) - 1; //115200bps
}
void Uart_Putc(unsigned char c)
{
#define rUTRSTAT0 (*(volatile unsigned int*)0x50000010)
#define rUTXH0 (*(volatile unsigned int*)0x50000020)
#define BUFFER_EMPTY (1 << 1)
while(!(rUTRSTAT0 & BUFFER_EMPTY));
rUTXH0 = c;
}
unsigned char Uart_Getc(void)
{
#define rUTRSTAT0 (*(volatile unsigned int*)0x50000010)
#define rURXH0 (*(volatile unsigned int*)0x50000024)
#define BUFFER_READY (1 << 0)
while(!(rUTRSTAT0 & BUFFER_READY));
return rURXH0;
}
struct __FILE
{
int handle;
/* Whatever you require here. If the only file you are using is */
/* standard output using printf() for debugging, no file handling */
/* is required. */
};
/* FILE is typedef'd in stdio.h. */
FILE __stdout;
int fputc(int ch, FILE *f)
{
Uart_Putc(ch);
return ch;
}
int ferror(FILE *f) {
/* Your implementation of ferror */
return EOF;
}
