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+/*******************************************************************************
+ * Trace Recorder Library for Tracealyzer v4.1.5
+ * Percepio AB, www.percepio.com
+ *
+ * trcStreamingPort.h
+ *
+ * The interface definitions for trace streaming ("stream ports").
+ * This "stream port" sets up the recorder to use SEGGER RTT as streaming channel.
+ *
+ * Note that this stream port is more complex than the typical case, since
+ * the J-Link interface uses a separate RAM buffer in SEGGER_RTT.c, instead
+ * of the default buffer included in the recorder core. The other stream ports
+ * offer more typical examples of how to define a custom streaming interface.
+ *
+ * Terms of Use
+ * This file is part of the trace recorder library (RECORDER), which is the
+ * intellectual property of Percepio AB (PERCEPIO) and provided under a
+ * license as follows.
+ * The RECORDER may be used free of charge for the purpose of recording data
+ * intended for analysis in PERCEPIO products. It may not be used or modified
+ * for other purposes without explicit permission from PERCEPIO.
+ * You may distribute the RECORDER in its original source code form, assuming
+ * this text (terms of use, disclaimer, copyright notice) is unchanged. You are
+ * allowed to distribute the RECORDER with minor modifications intended for
+ * configuration or porting of the RECORDER, e.g., to allow using it on a
+ * specific processor, processor family or with a specific communication
+ * interface. Any such modifications should be documented directly below
+ * this comment block.
+ *
+ * Disclaimer
+ * The RECORDER is being delivered to you AS IS and PERCEPIO makes no warranty
+ * as to its use or performance. PERCEPIO does not and cannot warrant the
+ * performance or results you may obtain by using the RECORDER or documentation.
+ * PERCEPIO make no warranties, express or implied, as to noninfringement of
+ * third party rights, merchantability, or fitness for any particular purpose.
+ * In no event will PERCEPIO, its technology partners, or distributors be liable
+ * to you for any consequential, incidental or special damages, including any
+ * lost profits or lost savings, even if a representative of PERCEPIO has been
+ * advised of the possibility of such damages, or for any claim by any third
+ * party. Some jurisdictions do not allow the exclusion or limitation of
+ * incidental, consequential or special damages, or the exclusion of implied
+ * warranties or limitations on how long an implied warranty may last, so the
+ * above limitations may not apply to you.
+ *
+ * Tabs are used for indent in this file (1 tab = 4 spaces)
+ *
+ * Copyright Percepio AB, 2018.
+ * www.percepio.com
+ ******************************************************************************/
+
+#ifndef TRC_STREAMING_PORT_H
+#define TRC_STREAMING_PORT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*******************************************************************************
+ * Configuration Macro: TRC_CFG_RTT_BUFFER_SIZE_UP
+ *
+ * Defines the size of the "up" RTT buffer (target -> host) to use for writing
+ * the trace data, for RTT buffer 1 or higher.
+ *
+ * This setting is ignored for RTT buffer 0, which can't be reconfigured
+ * in runtime and therefore hard-coded to use the defines in SEGGER_RTT_Conf.h.
+ *
+ * Default buffer size for Tracealyzer is 5000 bytes.
+ *
+ * If you have a stand-alone J-Link probe, the can be decreased to around 1 KB.
+ * But integrated J-Link OB interfaces are slower and needs about 5-10 KB,
+ * depending on the amount of data produced.
+ ******************************************************************************/
+#define TRC_CFG_RTT_BUFFER_SIZE_UP 5000
+
+/*******************************************************************************
+ * Configuration Macro: TRC_CFG_RTT_BUFFER_SIZE_DOWN
+ *
+ * Defines the size of the "down" RTT buffer (host -> target) to use for reading
+ * commands from Tracealyzer, for RTT buffer 1 or higher.
+ *
+ * Default buffer size for Tracealyzer is 32 bytes.
+ *
+ * This setting is ignored for RTT buffer 0, which can't be reconfigured
+ * in runtime and therefore hard-coded to use the defines in SEGGER_RTT_Conf.h.
+ ******************************************************************************/
+#define TRC_CFG_RTT_BUFFER_SIZE_DOWN 32
+
+/*******************************************************************************
+ * Configuration Macro: TRC_CFG_RTT_UP_BUFFER_INDEX
+ *
+ * Defines the RTT buffer to use for writing the trace data. Make sure that
+ * the PC application has the same setting (File->Settings).
+ *
+ * Default: 1
+ *
+ * We don't recommend using RTT buffer 0, since mainly intended for terminals.
+ * If you prefer to use buffer 0, it must be configured in SEGGER_RTT_Conf.h.
+ ******************************************************************************/
+#define TRC_CFG_RTT_UP_BUFFER_INDEX 1
+
+/*******************************************************************************
+ * Configuration Macro: TRC_CFG_RTT_DOWN_BUFFER_INDEX
+ *
+ * Defines the RTT buffer to use for reading the trace data. Make sure that
+ * the PC application has the same setting (File->Settings).
+ *
+ * Default: 1
+ *
+ * We don't recommend using RTT buffer 0, since mainly intended for terminals.
+ * If you prefer to use buffer 0, it must be configured in SEGGER_RTT_Conf.h.
+ ******************************************************************************/
+#define TRC_CFG_RTT_DOWN_BUFFER_INDEX 1
+
+/*******************************************************************************
+ * TRC_CFG_RTT_MODE
+ * This stream port for J-Link streaming relies on SEGGER RTT, that contains an
+ * internal RAM buffer read by the J-Link probes during execution.
+ *
+ * Possible values:
+ * - SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL
+ * - SEGGER_RTT_MODE_NO_BLOCK_SKIP (default)
+ *
+ * Using SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL ensure that you get a
+ * complete and valid trace. This may however cause blocking if your streaming
+ * interface isn't fast enough, which may disturb the real-time behavior.
+ *
+ * We therefore recommend SEGGER_RTT_MODE_NO_BLOCK_SKIP. In this mode,
+ * Tracealyzer will report lost events if the transfer is not
+ * fast enough. In that case, try increasing the size of the "up buffer".
+ ******************************************************************************/
+#define TRC_CFG_RTT_MODE SEGGER_RTT_MODE_NO_BLOCK_SKIP
+
+#include "SEGGER_RTT_Conf.h"
+#include "SEGGER_RTT.h"
+
+#if (TRC_CFG_RTT_UP_BUFFER_INDEX >= SEGGER_RTT_MAX_NUM_UP_BUFFERS)
+#error "TRC_CFG_RTT_UP_BUFFER_INDEX must be smaller than SEGGER_RTT_MAX_NUM_UP_BUFFERS"
+#endif
+
+#if (TRC_CFG_RTT_DOWN_BUFFER_INDEX >= SEGGER_RTT_MAX_NUM_DOWN_BUFFERS)
+#error "TRC_CFG_RTT_DOWN_BUFFER_INDEX must be smaller than SEGGER_RTT_MAX_NUM_DOWN_BUFFERS"
+#endif
+
+/* If index is defined as 0, the internal RTT buffers will be used instead of this. */
+#if TRC_CFG_RTT_UP_BUFFER_INDEX == 0
+#define TRC_RTT_ALLOC_UP() static char* _TzTraceData = NULL; /* Not actually used. Ignore allocation method. */
+#define TRC_STREAM_PORT_MALLOC() /* Static allocation. Not used. */
+#else
+#if TRC_CFG_RECORDER_BUFFER_ALLOCATION == TRC_RECORDER_BUFFER_ALLOCATION_STATIC
+#define TRC_RTT_ALLOC_UP() char _TzTraceData[TRC_CFG_RTT_BUFFER_SIZE_UP]; /* Static allocation */
+#define TRC_STREAM_PORT_MALLOC() /* Static allocation. Not used. */
+#endif
+#if TRC_CFG_RECORDER_BUFFER_ALLOCATION == TRC_RECORDER_BUFFER_ALLOCATION_DYNAMIC
+#define TRC_RTT_ALLOC_UP() char* _TzTraceData = NULL; /* Dynamic allocation */
+#define TRC_STREAM_PORT_MALLOC() _TzTraceData = TRC_PORT_MALLOC(TRC_CFG_RTT_BUFFER_SIZE_UP);
+#endif
+#if TRC_CFG_RECORDER_BUFFER_ALLOCATION == TRC_RECORDER_BUFFER_ALLOCATION_CUSTOM
+#define TRC_RTT_ALLOC_UP() char* _TzTraceData = NULL; /* Custom allocation, user needs to call vTraceSetRecorderDataBuffer before vTraceEnable, to assign this */
+#define TRC_STREAM_PORT_MALLOC() /* Not used in custom mode */
+#endif
+#endif
+
+/* Down-buffer. If index is defined as 0, the internal RTT buffers will be used instead of this. */ \
+#if TRC_CFG_RTT_DOWN_BUFFER_INDEX == 0
+#define TRC_RTT_ALLOC_DOWN() static char* _TzCtrlData = NULL; /* Not actually used. Ignore allocation method. */
+#else
+#define TRC_RTT_ALLOC_DOWN() static char _TzCtrlData[TRC_CFG_RTT_BUFFER_SIZE_DOWN]; /* Always static allocation, since usually small. */
+#endif
+
+#define TRC_STREAM_PORT_ALLOCATE_FIELDS() \
+ TRC_RTT_ALLOC_UP() /* Macro that will result in proper UP buffer allocation */ \
+ TRC_RTT_ALLOC_DOWN() /* Macro that will result in proper DOWN buffer allocation */
+
+int32_t readFromRTT(void* ptrData, uint32_t size, int32_t* ptrBytesRead);
+
+int32_t writeToRTT(void* ptrData, uint32_t size, int32_t* ptrBytesWritten);
+
+
+#define TRC_STREAM_PORT_INIT() \
+ TRC_STREAM_PORT_MALLOC(); /*Dynamic allocation or empty if static */ \
+ SEGGER_RTT_ConfigUpBuffer(TRC_CFG_RTT_UP_BUFFER_INDEX, "TzData", _TzTraceData, TRC_CFG_RTT_BUFFER_SIZE_UP, TRC_CFG_RTT_MODE ); \
+ SEGGER_RTT_ConfigDownBuffer(TRC_CFG_RTT_DOWN_BUFFER_INDEX, "TzCtrl", _TzCtrlData, TRC_CFG_RTT_BUFFER_SIZE_DOWN, TRC_CFG_RTT_MODE);
+
+/* Important for the J-Link port, in most other ports this can be skipped (default is 1) */
+#define TRC_STREAM_PORT_USE_INTERNAL_BUFFER 0
+
+#define TRC_STREAM_PORT_WRITE_DATA(_ptrData, _size, _ptrBytesWritten) writeToRTT(_ptrData, _size, _ptrBytesWritten)
+
+#define TRC_STREAM_PORT_READ_DATA(_ptrData, _size, _ptrBytesRead) readFromRTT(_ptrData, _size, _ptrBytesRead)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TRC_STREAMING_PORT_H */