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Alfred Gedeon 2020-07-01 22:27:40 -07:00 • committed by alfred gedeon
parent a5dbc2b1de
commit 718178c68a
406 changed files with 108795 additions and 106323 deletions
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75
portable/IAR/AVR32_UC3/write.c
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@ -1,17 +1,18 @@
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief System-specific implementation of the \ref __write 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: http://www.atmel.com \n
* Support and FAQ: http://support.atmel.no/
*
******************************************************************************/
*
* \brief System-specific implementation of the \ref __write 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: http://www.atmel.com \n
* Support and FAQ: http://support.atmel.no/
*
******************************************************************************/
/* Copyright (c) 2007, Atmel Corporation All rights reserved.
*
@ -52,8 +53,8 @@ _STD_BEGIN
#pragma module_name = "?__write"
//! Pointer to the base of the USART module instance to use for stdio.
__no_init volatile avr32_usart_t *volatile stdio_usart_base;
/*! Pointer to the base of the USART module instance to use for stdio. */
__no_init volatile avr32_usart_t * volatile stdio_usart_base;
/*! \brief Writes a number of bytes, at most \a size, from the memory area
@ -69,34 +70,36 @@ __no_init volatile avr32_usart_t *volatile stdio_usart_base;
*
* \return The number of bytes written, or \c _LLIO_ERROR on failure.
*/
size_t __write(int handle, const uint8_t *buffer, size_t size)
size_t __write( int handle,
const uint8_t * buffer,
size_t size )
{
size_t nChars = 0;
size_t nChars = 0;
if (buffer == 0)
{
// This means that we should flush internal buffers.
return 0;
}
// This implementation only writes to stdout and stderr.
// For all other file handles, it returns failure.
if (handle != _LLIO_STDOUT && handle != _LLIO_STDERR)
{
return _LLIO_ERROR;
}
for (; size != 0; --size)
{
if (usart_putchar(stdio_usart_base, *buffer++) < 0)
if( buffer == 0 )
{
return _LLIO_ERROR;
/* This means that we should flush internal buffers. */
return 0;
}
++nChars;
}
/* This implementation only writes to stdout and stderr. */
/* For all other file handles, it returns failure. */
if( ( handle != _LLIO_STDOUT ) && ( handle != _LLIO_STDERR ) )
{
return _LLIO_ERROR;
}
return nChars;
for( ; size != 0; --size )
{
if( usart_putchar( stdio_usart_base, *buffer++ ) < 0 )
{
return _LLIO_ERROR;
}
++nChars;
}
return nChars;
}