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你好,horsley,能否提供下你的 简易 JTAG线材的做法和 使用配置文件。
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K.I.S.S
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Oct 22, 2009, 4:05:39 AM
10/22/09
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谢谢。
JTAG适配器 OPENJTAG并不是每个人都拥有。
能否使用bcm的 ejtag适配器? 就是 电阻+并口 的那种。
horsley
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Oct 22, 2009, 8:26:59 PM
10/22/09
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你好,ejtag 我不熟悉。
我使用的 wiggler 是使用一片 74HC244 做信号缓冲,网上电路图比较多。taobao上卖的也多,20元左右。但这种wiggler 设计的有问题,没有引出 nTRST 和 nSRST (我手里的就这样)。我自己用了两个三极管,通过 74HC244 缓冲后,再做了反相(原理我不懂,照到网上做的)。软件使用 urjtag ,不需要特殊配置,可以刷新 flash。
这篇文章可以参考,写的很详细:
http://osdir.com/ml/windows.ce.opensource/2006-01/msg00011.html
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JTAG适配器 OPENJTAG并不是每个人都拥有。
能否使用bcm的 ejtag适配器? 就是 电阻+并口 的那种。
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