71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/*
|
|
* File : stdio.c
|
|
* Brief : stdio/console
|
|
*
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2017/10/15 bernard implement stdio for armcc.
|
|
*/
|
|
|
|
#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_read(void *buffer, size_t size)
|
|
{
|
|
return read(std_fd, buffer, size);
|
|
}
|
|
|
|
int libc_stdio_write(void *buffer, size_t size)
|
|
{
|
|
return write(std_fd, buffer, size);
|
|
}
|
|
#endif
|