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989bc332b2
* Add XMOS XCore ports Some minor modifications are also made to the kernel to support the XCore compiler's automatic stack size calculation. * Update kernel to support SMP The XMOS XCore ports are also updated to support SMP. * Fix compiler warnings in xcore ports The port set and clear interrupt mask from ISR macros were removed from the ports so that the default macros found in FreeRTOS.h are used instead. The default macros do not result in warnings when they are used. * Remove inline function from timers.h Inline function converted to macro. This should now build when optimizations are off and inlining is disabled. * Fix compiler warnings in xcore ports and tasks.c * fixed documentation for ulTaskNotifyTake() and ulTaskNotifyTakeIndexed() * spelling fixes for tasks.c Co-authored-by: Michael Bruno <mikeb@xmos.com>
95 lines
3 KiB
C
95 lines
3 KiB
C
/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief System-specific implementation of the \ref __read function used by
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the standard library.
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*
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* - Compiler: IAR EWAVR32
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* - Supported devices: All AVR32 devices with a USART module can be used.
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* - AppNote:
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*
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* \author Atmel Corporation (Now Microchip):
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* https://www.microchip.com \n
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* Support and FAQ: https://www.microchip.com/support/
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*
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******************************************************************************/
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/* Copyright (c) 2007, Atmel Corporation All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of ATMEL may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <yfuns.h>
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#include <avr32/io.h>
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#include "usart.h"
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_STD_BEGIN
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#pragma module_name = "?__read"
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extern volatile avr32_usart_t *volatile stdio_usart_base;
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/*! \brief Reads a number of bytes, at most \a size, into the memory area
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* pointed to by \a buffer.
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*
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* \param handle File handle to read from.
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* \param buffer Pointer to buffer to write read bytes to.
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* \param size Number of bytes to read.
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*
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* \return The number of bytes read, \c 0 at the end of the file, or
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* \c _LLIO_ERROR on failure.
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*/
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size_t __read(int handle, uint8_t *buffer, size_t size)
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{
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int nChars = 0;
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// This implementation only reads from stdin.
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// For all other file handles, it returns failure.
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if (handle != _LLIO_STDIN)
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{
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return _LLIO_ERROR;
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}
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for (; size > 0; --size)
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{
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int c = usart_getchar(stdio_usart_base);
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if (c < 0)
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break;
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*buffer++ = c;
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++nChars;
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}
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return nChars;
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}
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_STD_END
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