| /* |
| * 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 |