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/stdio_io.h b/sysmoOCTSIM/stdio_redirect/stdio_io.h
new file mode 100644
index 0000000..973adad
--- /dev/null
+++ b/sysmoOCTSIM/stdio_redirect/stdio_io.h
@@ -0,0 +1,81 @@
+/**
+ * \file
+ *
+ * \brief STDIO redirection terminal
+ *
+ * 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
+ *
+ */
+
+#ifndef _STDIO_IO_H_INCLUDED
+#define _STDIO_IO_H_INCLUDED
+
+#include <hal_io.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * \brief Initialize STDIO access
+ * \param[in] io Pointer to IO descriptor,
+ * NULL to discard R/W without any error.
+ */
+void stdio_io_init(struct io_descriptor *io);
+
+/**
+ * \brief Change IO descriptor for terminal to R/W data
+ * \param[in] io Pointer to IO descriptor,
+ * NULL to discard R/W without any error.
+ */
+void stdio_io_set_io(struct io_descriptor *io);
+
+/**
+ * \brief Read through specified terminal
+ * \param[out] buf Pointer to buffer to place read data
+ * \param[in] len Data length in number of bytes
+ * \return status
+ * \retval >=0 number of bytes read
+ * \retval <0 error
+ */
+int32_t stdio_io_read(uint8_t *buf, const int32_t len);
+
+/**
+ * \brief Write through specified terminal
+ * \param[in] buf Pointer to buffer to place data to write
+ * \param[in] len Data length in number of bytes
+ * \return status
+ * \retval >=0 number of bytes read
+ * \retval <0 error
+ */
+int32_t stdio_io_write(const uint8_t *buf, const int32_t len);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _STDIO_IO_H_INCLUDED */