76 lines
1.3 KiB
C
76 lines
1.3 KiB
C
/*
|
|
* 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 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_get_console(void)
|
|
{
|
|
return std_fd;
|
|
}
|
|
|
|
int libc_stdio_read(void *buffer, size_t size)
|
|
{
|
|
if (std_fd >= 0)
|
|
{
|
|
return read(std_fd, buffer, size);
|
|
}
|
|
else
|
|
{
|
|
rt_kprintf("Illegal stdio input!\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int libc_stdio_write(const void *buffer, size_t size)
|
|
{
|
|
if (std_fd >= 0)
|
|
{
|
|
return write(std_fd, buffer, size);
|
|
}
|
|
else
|
|
{
|
|
rt_kprintf("Illegal stdio output!\n");
|
|
return size;
|
|
}
|
|
}
|
|
#endif
|