76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* File : stdio.c
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* Brief : stdio/console
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*
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2017/10/15 bernard implement stdio for armcc.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <rtthread.h>
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#include "libc.h"
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#if defined(RT_USING_DFS) && defined(RT_USING_DFS_DEVFS)
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#include <dfs_posix.h>
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#define STDIO_DEVICE_NAME_MAX 32
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static int std_fd = -1;
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int libc_stdio_set_console(const char* device_name, int mode)
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{
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int fd;
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char name[STDIO_DEVICE_NAME_MAX];
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snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
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name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
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fd = open(name, mode, 0);
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if (fd >= 0)
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{
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if (std_fd >= 0)
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{
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close(std_fd);
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}
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std_fd = fd;
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}
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return std_fd;
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}
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int libc_stdio_get_console(void)
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{
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return std_fd;
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}
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int libc_stdio_read(void *buffer, size_t size)
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{
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return read(std_fd, buffer, size);
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}
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int libc_stdio_write(const void *buffer, size_t size)
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{
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return write(std_fd, buffer, size);
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}
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#endif
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