Add AVR32 port and demo files.

Source/portable/IAR/AVR32_UC3/write.c

@@ -0,0 +1,105 @@
+/* This source file is part of the ATMEL FREERTOS-0.9.0 Release */
+
+/*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 email: avr32@atmel.com
+ *
+ ******************************************************************************/
+
+/* 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/iouc3a0512.h>
+#include "usart.h"
+
+
+_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;
+
+
+/*! \brief Writes a number of bytes, at most \a size, from the memory area
+ *         pointed to by \a buffer.
+ *
+ * If \a buffer is zero then \ref __write performs flushing of internal buffers,
+ * if any. In this case, \a handle can be \c -1 to indicate that all handles
+ * should be flushed.
+ *
+ * \param handle File handle to write to.
+ * \param buffer Pointer to buffer to read bytes to write from.
+ * \param size Number of bytes to write.
+ *
+ * \return The number of bytes written, or \c _LLIO_ERROR on failure.
+ */
+size_t __write(int handle, const unsigned char *buffer, size_t size)
+{
+  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)
+    {
+      return _LLIO_ERROR;
+    }
+
+    ++nChars;
+  }
+
+  return nChars;
+}
+
+
+_STD_END