[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/Include/trcString.h

@@ -0,0 +1,76 @@
+/*
+* Percepio Trace Recorder for Tracealyzer v4.6.0
+* Copyright 2021 Percepio AB
+* www.percepio.com
+*
+* SPDX-License-Identifier: Apache-2.0
+*/
+
+/**
+ * @file 
+ * 
+ * @brief Public trace string APIs.
+ */
+
+#ifndef TRC_STRING_H
+#define TRC_STRING_H
+
+#if (TRC_USE_TRACEALYZER_RECORDER == 1)
+
+#if (TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING)
+
+#include <trcTypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup trace_string_apis Trace String APIs
+ * @ingroup trace_recorder_apis
+ * @{
+ */
+
+/**
+ * @brief Registers a trace string.
+ * 
+ * This routine registers a strings in the recorder, e.g. for names of user
+ * event channels.
+ *
+ * Example:
+ *	 TraceStringHandle_t myEventHandle;
+ *	 xTraceStringRegister("MyUserEvent", &myEventHandle);
+ *	 ...
+ *	 xTracePrintF(myEventHandle, "My value is: %d", myValue);
+ * 
+ * @param[in] szString String.
+ * @param[out] pString Pointer to uninitialized trace string.
+ * 
+ * @retval TRC_FAIL Failure
+ * @retval TRC_SUCCESS Success
+ */
+traceResult xTraceStringRegister(const char *szString, TraceStringHandle_t* pString);
+
+/**
+ * @brief Registers a trace string. 
+ * 
+ * @deprecated Remains for backward compability with pre v4.6 versions
+ * of the recorder.
+ * 
+ * @param[in] name Name.
+ * 
+ * @return TraceStringHandle_t 
+ */
+TraceStringHandle_t xTraceRegisterString(const char *name);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* (TRC_CFG_RECORDER_MODE == TRC_RECORDER_MODE_STREAMING) */
+
+#endif /* (TRC_USE_TRACEALYZER_RECORDER == 1) */
+
+#endif /* TRC_STRING_H */