You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
/*
|
|
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
|
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
*
|
|
* SPDX-License-Identifier: MIT AND BSD-3-Clause
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
* this software and associated documentation files (the "Software"), to deal in
|
|
* the Software without restriction, including without limitation the rights to
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
* the Software, and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* https://www.FreeRTOS.org
|
|
* https://github.com/FreeRTOS
|
|
*
|
|
*/
|
|
|
|
/*This file is prepared for Doxygen automatic documentation generation.*/
|
|
/*! \file *********************************************************************
|
|
*
|
|
* \brief System-specific implementation of the \ref __read function used by
|
|
the standard library.
|
|
*
|
|
* - Compiler: IAR EWAVR32
|
|
* - Supported devices: All AVR32 devices with a USART module can be used.
|
|
* - AppNote:
|
|
*
|
|
* \author Atmel Corporation (Now Microchip):
|
|
* https://www.microchip.com \n
|
|
* Support and FAQ: https://www.microchip.com/support/
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (c) 2007, Atmel Corporation All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3. The name of ATMEL may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
|
|
* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#include <yfuns.h>
|
|
#include <avr32/io.h>
|
|
#include "usart.h"
|
|
|
|
|
|
_STD_BEGIN
|
|
|
|
|
|
#pragma module_name = "?__read"
|
|
|
|
|
|
extern volatile avr32_usart_t *volatile stdio_usart_base;
|
|
|
|
|
|
/*! \brief Reads a number of bytes, at most \a size, into the memory area
|
|
* pointed to by \a buffer.
|
|
*
|
|
* \param handle File handle to read from.
|
|
* \param buffer Pointer to buffer to write read bytes to.
|
|
* \param size Number of bytes to read.
|
|
*
|
|
* \return The number of bytes read, \c 0 at the end of the file, or
|
|
* \c _LLIO_ERROR on failure.
|
|
*/
|
|
size_t __read(int handle, uint8_t *buffer, size_t size)
|
|
{
|
|
int nChars = 0;
|
|
|
|
// This implementation only reads from stdin.
|
|
// For all other file handles, it returns failure.
|
|
if (handle != _LLIO_STDIN)
|
|
{
|
|
return _LLIO_ERROR;
|
|
}
|
|
|
|
for (; size > 0; --size)
|
|
{
|
|
int c = usart_getchar(stdio_usart_base);
|
|
if (c < 0)
|
|
break;
|
|
|
|
*buffer++ = c;
|
|
++nChars;
|
|
}
|
|
|
|
return nChars;
|
|
}
|
|
|
|
|
|
_STD_END
|