Switch SERCOM7 (Debug UART) to sync mode + add STDIO
this will allow us to do printf()
Change-Id: Ibf4ba961d4bbf8d787558f38f3d557422587aad3
diff --git a/sysmoOCTSIM/stdio_redirect/iar/write.c b/sysmoOCTSIM/stdio_redirect/iar/write.c
new file mode 100644
index 0000000..7bc8f78
--- /dev/null
+++ b/sysmoOCTSIM/stdio_redirect/iar/write.c
@@ -0,0 +1,94 @@
+/**
+ * \file
+ *
+ * \brief STDIO redirection
+ *
+ * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Subject to your compliance with these terms, you may use Microchip
+ * software and any derivatives exclusively with Microchip products.
+ * It is your responsibility to comply with third party license terms applicable
+ * to your use of third party software (including open source software) that
+ * may accompany Microchip software.
+ *
+ * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
+ * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
+ * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
+ * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
+ * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
+ * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
+ * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
+ * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
+ * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
+ * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
+ * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#include <stdio_io.h>
+#include <stdio.h>
+
+#ifndef _UNIT_TEST_
+#include <yfuns.h>
+#else
+#define _STD_BEGIN
+#define _STD_END
+#define _LLIO_ERROR ((size_t)-1) /* For __read and __write. */
+#define _LLIO_STDIN 0
+#define _LLIO_STDOUT 1
+#define _LLIO_STDERR 2
+#endif
+
+#if (__VER__ < 8010000)
+/* Refer http://ftp.iar.se/WWWfiles/arm/webic/doc/EWARM_MigrationGuide.ENU.pdf */
+_STD_BEGIN
+#endif
+
+#pragma module_name = "?__write"
+
+/*! \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)
+{
+ int n = 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;
+ }
+
+ n = stdio_io_write((const uint8_t *)buffer, size);
+ if (n < 0) {
+ return _LLIO_ERROR;
+ }
+
+ return n;
+}
+
+#if (__VER__ < 8010000)
+/* Refer http://ftp.iar.se/WWWfiles/arm/webic/doc/EWARM_MigrationGuide.ENU.pdf */
+_STD_END
+#endif