2017-10-15 22:41:59 +08:00
|
|
|
/*
|
2021-03-08 18:19:04 +08:00
|
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
2017-10-15 22:41:59 +08:00
|
|
|
*
|
2018-10-14 19:28:18 +08:00
|
|
|
* SPDX-License-Identifier: Apache-2.0
|
2017-10-15 22:41:59 +08:00
|
|
|
*
|
|
|
|
* Change Logs:
|
|
|
|
* Date Author Notes
|
|
|
|
* 2017/10/15 bernard the first version
|
|
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
|
|
#include <rtthread.h>
|
|
|
|
#include "libc.h"
|
|
|
|
|
|
|
|
#define STDIO_DEVICE_NAME_MAX 32
|
|
|
|
|
2021-03-08 18:19:04 +08:00
|
|
|
int _EXFUN(fileno, (FILE *));
|
2018-06-10 17:59:17 +08:00
|
|
|
|
2017-10-15 22:41:59 +08:00
|
|
|
static FILE* std_console = NULL;
|
|
|
|
|
|
|
|
int libc_stdio_set_console(const char* device_name, int mode)
|
|
|
|
{
|
|
|
|
FILE *fp;
|
|
|
|
char name[STDIO_DEVICE_NAME_MAX];
|
|
|
|
char *file_mode;
|
|
|
|
|
|
|
|
snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
|
|
|
|
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
|
|
|
|
|
|
|
|
if (mode == O_RDWR) file_mode = "r+";
|
|
|
|
else if (mode == O_WRONLY) file_mode = "wb";
|
2018-03-05 21:17:03 +08:00
|
|
|
else file_mode = "rb";
|
2017-10-15 22:41:59 +08:00
|
|
|
|
|
|
|
fp = fopen(name, file_mode);
|
|
|
|
if (fp)
|
|
|
|
{
|
|
|
|
setvbuf(fp, NULL, _IONBF, 0);
|
|
|
|
|
|
|
|
if (std_console)
|
|
|
|
{
|
|
|
|
fclose(std_console);
|
|
|
|
std_console = NULL;
|
|
|
|
}
|
|
|
|
std_console = fp;
|
|
|
|
|
|
|
|
if (mode == O_RDWR)
|
|
|
|
{
|
|
|
|
_GLOBAL_REENT->_stdin = std_console;
|
|
|
|
}
|
2021-03-08 18:19:04 +08:00
|
|
|
else
|
2017-10-15 22:41:59 +08:00
|
|
|
{
|
|
|
|
_GLOBAL_REENT->_stdin = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mode == O_RDONLY)
|
|
|
|
{
|
|
|
|
_GLOBAL_REENT->_stdout = NULL;
|
|
|
|
_GLOBAL_REENT->_stderr = NULL;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
_GLOBAL_REENT->_stdout = std_console;
|
|
|
|
_GLOBAL_REENT->_stderr = std_console;
|
|
|
|
}
|
|
|
|
|
|
|
|
_GLOBAL_REENT->__sdidinit = 1;
|
|
|
|
}
|
|
|
|
|
2018-02-11 13:57:51 +08:00
|
|
|
if (std_console) return fileno(std_console);
|
|
|
|
|
|
|
|
return -1;
|
2017-10-15 22:41:59 +08:00
|
|
|
}
|
2018-01-12 16:55:47 +08:00
|
|
|
|
|
|
|
int libc_stdio_get_console(void) {
|
|
|
|
if (std_console)
|
|
|
|
return fileno(std_console);
|
|
|
|
else
|
|
|
|
return -1;
|
|
|
|
}
|