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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017/10/15 bernard implement stdio for IAR dlib.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rtthread.h>
#include "libc.h"
#if defined(RT_USING_DFS) && defined(RT_USING_DFS_DEVFS)
#include <dfs_posix.h>
#define STDIO_DEVICE_NAME_MAX 32
static int std_fd = -1;
int libc_stdio_set_console(const char* device_name, int mode)
{
int fd;
char name[STDIO_DEVICE_NAME_MAX];
snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
fd = open(name, mode, 0);
if (fd >= 0)
{
if (std_fd >= 0)
{
close(std_fd);
}
std_fd = fd;
}
return std_fd;
}
int libc_stdio_get_console(void) {
return std_fd;
}
int libc_stdio_read(void *buffer, size_t size)
{
return read(std_fd, buffer, size);
}
int libc_stdio_write(const void *buffer, size_t size)
{
return write(std_fd, buffer, size);
}
#endif
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