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@@ -1,2 +1,30 @@
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# segger_debug
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segger debug utils, such as SEGGER's Real Time Transfer, SEGGER SystemView porting.
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+
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+##How to use the Segger SystemView trace componment
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+
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+By Arda.Fu 2016.8.10
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+
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+### 1. Copy description file
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+Copy the 'description\SYSVIEW_RTThread.txt' to folder '%SystemView_Install_Folder%\Description\'.
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+### 2. Copy source file
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+Copy the folder 'trace' to folder '%RTT_ROOT%\components\trace'.
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+### 3. Enable trace componment
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+Enable `RT_USING_HOOK` and add `RT_USING_TRACE` define in your bsp's rtconfig.h
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+```c
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+// <bool name="RT_USING_TRACE" description="Enable trace" default="true" />
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+#define RT_USING_TRACE
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+```
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+### 4. Connect to target board debug interface
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+Segger SystemView only support Segger J-Link and Segger J-Link OB. If you using the origin development boards from vendor, you can upgrade the on board debugger to J-Link OB.
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+
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+* For ST ST-Link, here is the [ST-Link upgrade utility download page](https://www.segger.com/jlink-st-link.html)
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+* For Atmel EDBG, here is the [EDBG upgrade utility download page](https://www.segger.com/jlink-edbg.html)
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+* For Freescale(NXP) OpenSDA/OpenSDA-V2, here is the [OpenSDA upgrade utility download page](https://www.segger.com/opensda.html)
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+* For NXP LPC Link 2, here is the [LPC link 2 upgrade utility download page](https://www.segger.com/lpc-link-2.html)
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+* NXP LPCXpresso, here is the [LPCXpresso upgrade utility download page](https://www.segger.com/jlink-lpcxpresso-ob.html)
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+
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+### 5. Intergration (Porting) limitation
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+
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+* Can only trace thread, scheduler and interrupt.
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+* Tracing RT-Thread IPC componment is not supported.
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