uartsim.c

一个SD卡和FAT16读写源代码

#include <stdio.h>

#include "uartsim.h"

static int _uart_putc(char c, FILE* stream);
static int _uart_getc(FILE* stream);

//static FILE stdio = FDEV_SETUP_STREAM(_uart_putc, _uart_getc, _FDEV_SETUP_RW);

void uart_init()
{

}

void uart_connect_stdio()
{
//    stdin = stdout = stderr = &stdio;
}

void uart_putc(uint8_t c)
{
    if(c == '\n')
        uart_putc('\r');
    /* wait until transmit buffer is empty */
    /* send next byte */
    putchar(c);
}

int _uart_putc(char c, FILE* stream)
{
    uart_putc(c);
    return 0;
}

void uart_putc_hex(uint8_t b)
{
    /* upper nibble */
    if((b >> 4) < 0x0a)
        uart_putc((b >> 4) + '0');
    else
        uart_putc((b >> 4) - 0x0a + 'a');

    /* lower nibble */
    if((b & 0x0f) < 0x0a)
        uart_putc((b & 0x0f) + '0');
    else
        uart_putc((b & 0x0f) - 0x0a + 'a');
}

uint8_t uart_getc()
{
    /* wait until receive buffer is full */
    return getch();
}

int _uart_getc(FILE* stream)
{
    return uart_getc();
}

void uart_puts_p(char *str)
{
	puts(str);
}
void uart_puts(char *str)
{
	puts(str);
}

void uart_putdw_dec(uint32_t dw)
{
	printf("%d",dw);
}

void uart_putdw_hex(uint32_t dw)
{
	printf("0x%x",dw);
}