70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2015-01-28 Bernard first version
|
|
*/
|
|
|
|
#include <rtthread.h>
|
|
#include <LowLevelIOInterface.h>
|
|
#include <unistd.h>
|
|
#define DBG_TAG "dlib.syscall_write"
|
|
#define DBG_LVL DBG_INFO
|
|
#include <rtdbg.h>
|
|
|
|
/*
|
|
* The "__write" function should output "size" number of bytes from
|
|
* "buffer" in some application-specific way. It should return the
|
|
* number of characters written, or _LLIO_ERROR on failure.
|
|
*
|
|
* If "buffer" is zero then __write should perform flushing of
|
|
* internal buffers, if any. In this case "handle" can be -1 to
|
|
* indicate that all handles should be flushed.
|
|
*
|
|
* The template implementation below assumes that the application
|
|
* provides the function "MyLowLevelPutchar". It should return the
|
|
* character written, or -1 on failure.
|
|
*/
|
|
|
|
#pragma module_name = "?__write"
|
|
|
|
size_t __write(int handle, const unsigned char *buf, size_t len)
|
|
{
|
|
#ifdef DFS_USING_POSIX
|
|
int size;
|
|
#endif /* DFS_USING_POSIX */
|
|
|
|
if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
|
|
{
|
|
#ifdef RT_USING_CONSOLE
|
|
rt_device_t console_device;
|
|
|
|
console_device = rt_console_get_device();
|
|
if (console_device)
|
|
{
|
|
rt_device_write(console_device, 0, buf, len);
|
|
}
|
|
|
|
return len; /* return the length of the data written */
|
|
#else
|
|
return _LLIO_ERROR;
|
|
#endif /* RT_USING_CONSOLE */
|
|
}
|
|
else if (handle == _LLIO_STDIN)
|
|
{
|
|
return _LLIO_ERROR;
|
|
}
|
|
else
|
|
{
|
|
#ifdef DFS_USING_POSIX
|
|
size = write(handle, buf, len);
|
|
return size; /* return the length of the data written */
|
|
#else
|
|
return _LLIO_ERROR;
|
|
#endif /* DFS_USING_POSIX */
|
|
}
|
|
}
|