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# 超越JLINK?这是DAPLink的最后一块拼图 | ||
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## 一、引言 | ||
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你听说过**J-Link**的**RTT**么?官方的宣传是这样的: | ||
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![RTTView](..\..\.\images\microlink\RTTView.jpg) | ||
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简单来说,只要拥有了**J-Link**,你就可以享受以下的便利: | ||
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- 无需占用**USART**或者**USB**转串口工具,将**printf**重定位到一个由J-LINK提供的虚拟串口上; | ||
- 支持任何J-LINK声称支持的芯片 | ||
- 高速通信,不影响芯片的实时响应 | ||
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它的缺点也是明显的: | ||
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- **你必须拥有一个J-Link**,如果你使用的是 **CMSIS-DAP**或者**ST-Link**之类的第三方调试工具,就无法享受这一福利; | ||
- 你必须在工程中手动插入一段代码。 | ||
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在我发布的文章[正版Jlink速度很牛么?中国工程师用开源轻松拿捏](https://mp.weixin.qq.com/s/ocaBIDV0DxBJwXpgW1X7OQ)中,使用开源的DAPLink替代Jlink, | ||
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![jscope](..\..\.\images\microlink\jscope.jpg) | ||
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## 一、引言 | ||
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![RTTView_CMD](E:\software\MicroBoot\docs\images\microlink\RTTView_CMD.jpg) | ||
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![sin](E:\software\MicroBoot\docs\images\microlink\sin.jpg) | ||
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