在线调试工具(***NALTAP chipscope vivado)问题(学习总结)
本帖最后由 mdyfpga 于 2022-3-30 08:45 编辑大家学习在线调试工具(***NALTAP chipscope vivado)都会遇到各种问题,明德扬整理了的同学们提出的问题,本帖将对在线调试工具问题进行一个汇总,大家可以从这里找到您想要学习或疑惑的问题,然后进行学习。为方便您随时找到答案,敬请您收藏本网址:http://www.mdy-edu.com/wentijieda/20210409/1217.html
【问题1】 按以下设置采样时钟,结果提示出现wait clock,没有抓到数据。
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***Ex5NRNBRAvzMm/MCzqhIcWQKyLTUeoqLkwgKikIV5MMhX3P6YG06eWIpe1MlZRmxnPGPILXaRLNleUQF5HzkMneqlBwnntNBoYSf8MbH15eon***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***yp0ST7otWr090eg8Gfj2KIa+24s3X+lJz3/ey4vvDWfmgULsblOSaY32JPiUOy889jFfDHqSF57pSc8HbqfPaE+2hFdQWxnHuc1TeOPej1mjb6BB38G9I+fzdWuZbVVNxFk3gzee68/I/g/zxIN30G+RL24j3uCdJ26nz39Xs0NdQnlmEH4en/HS/T3p+fhj9PznHfzh6RlsDY/k+OqRTJ8+l1Xnas0bhnInKiiB7pQG/YW1s9+kIdxZRWkeAe73+BvHV92lkL8MDAaozaQkcgE/TPk***Wcd07IChrCdLJgwi3Efv0voNic2qYlNeWL02ekXh9/MT+l72+289Ny9HFx3j3LZxXlI4deQtvsRPn72cZ7u2ZOeD73KsO/3cTzyBN7r5tPvlc+Y+sVLPPviIgKr6qnN2s6EF9/nK7dDhOtbZVVudzEBbs/1J5dX7B9IGAZi1ZEDBW33v4RnoFYsYxWbCsNZ994zPHzz7dx5z4P8e+DT7FsvdoE7GMWLFTknribv0K1Uid3O8Y+B5g7S/G6nPOx2sg7+lvgD/0f88WdICP6Q4oIfMJUFkrb6lVYLrwJDvj/6Y/3J8nKseBvP3MCOBU/Td/gS/DK7BgxJfndTkH6sDRhy08OoSPjaYd3EaqM67TPkpEWSn3qUZtVvHR6bIQ6CrE2f337Wlx1wkJvO0fWCgWHltH2MHLqeIFuFkIHBcy3bVnzJ0CfeYvZxA+XF+eiWv879w1aw98xJ9s4cwKSJM9h0rlXJS3MMC3j5uens2jmX4b0nMG/9CaIFjZxIgn+cRv+en7FKZ6C4q8AwaChjvt7CqehQAhZ8ym0PDONHfR0NgRN4pN9CNoftYfnId/h8yHx2CXnt6N45O593v9vIhqAMGhN9+HH1XN5ZpbbPY1nJ2gIGe7R6e6ITwPD395ixJYJ44SZOO8qWiZ/z9GtLOdW6MbcTUZmWAIZj83jpxrfx1FZT1ghoVvP5m6P4ZOYBog2JqHbO48Mnx7A5tYHG8wUG9wl88NIkdifmU3lgNDfd8Coz/TPIOrOS0V/O4asNW9m/cQKjnnqXBWc7gmIGhvidzF+ylFE/qmks1tB47BWHHUXMMRQE3sXk0cOpC3Ps97dUJqKDbR13J74z/08hf+FK+g5MtVK7l0W5sX7OG4og1AkYBvVi5LBRHA910pVk02IAigLZtNiTKfP9yBO7i1UKq6NU3SjyvZFZD33AT+mZpBcXUxyzlelfeeDmvpQN7p/whtwWsvBk72PGO8OYtsyfqNTzBYYhDoFBOh8p6gpaon8P2pstwi3mTWWW8yACqMZ4svFQLKXFwkX1rGKbhc29m2l9Z3KwMJdiESIXMuA9D/buX8Z3g3oxQO7LrXU2NdaQtuY1MzCkxXPU7T94zX6ErHOO/f15h28gLGQSUm8XrsKkV0EtdsUruzX1R+6i0AIY8lOPKE48iwPyanUvk50eQ07aGZrVv3MMDKqraEj6UPqQUEcrwfJZbnpH1wsHhhXHGT/Dh3hHwDDXnZUr3Bg6egvRZQYqyoopVy/k/fvGsGj1LEZPmM8cT3+SZCUvgOH0bF7+3fXceHV/pu4+g660jHJBo6KcspJiCguKKCk3UNEVV5KwGL5bisf6MAoqYgnfv5T+gzaTYmygWb+Kjwb8wH4fT6Z+twT3daHkCeu2IzA0n2LZmzNZszEUf7+5rHEbwdJwe5oakJW1LWCwR0sGhveX4BWWToVwE5uSOL1hHl+/OIEdrW7RTg0r0xLAEPwDvV9ZgaaygQaRvjmcLcPHMvW/GwksNNHc1Eh9XQNNxgZaUs/TYvhxGaP+60V6fSk12qX0fnkJJ/Ql1OR44zblBzwWebJp4zJGjdtLqmCRlbWUgcGk5eCcpcwbuYPAlOOo3ZT2IPQg+9h9fPLBZGpCnZ+QbVb1YN3st/Ba8pyikukIDM5YJ6ZzFnMMwmL4bglLlm+hNNPxiFACr/QhnXftyg0rA4PbcXIrw0HxgLdryNj/F57t1p3fXHst1153HdddezVXXfUyg/87nQU/LmWk3BYyDVMTjfX1NDQaaS69NMAgDpwrCfsjxupoM+gK4G0L9dZLWDsBg/JJuYdnduOR7ldxjVTfa7nu2h507/4h8zfN5wvLvtxaZytgOLsLj6lLWb1oIrXxTzuUj9ro26jKnS/ZNtJu9aJV5jOa4h5X3GEdd+hv5KW1b3Ar1O9UnHgWG9fEqqRa3UvU6l5t/QCRfetJHNjXFPMolSVahxPQctM7ul4wMOycsZ6vP3RjvyNXkgCGle4MG/sTsUK5i8/2RS9l4D2jWbRqBiPkeQgZXCSLwY2Xn5rInFF9eH7SCjYGJzmsrCUiyvc2XUlTPFn4YziFwp3i48mAj7eTamqgWTaZvT2ZIscRnOsIDNQS4tYP97XTmfj5YtzHrCW4w258K4bLytoWMNijJQOD1eqdFM5sXMCEF8azXfJJWVExP8i0JGDouJIqkm0jvmDauB85brmfqqOyFjnJ+cguBRukrOI0llIT48lrr3oSlFZKjQBgwcOFnmwUbjQ5n0606onzmsvK2R8wZf0WNr+ppLh7kHH0Afr2WUDF2duk8+ktLQN793WaO9iwYCAHliuPPi2BoVw1n83zX6PRoduqG6aI60hb+bR5BCqAYYony1ZupiLzC4eKRlpZJdbg2zs/SAaGBcfJrYoCnWPFheq3pPs9xcvPzsJXrUOXmEiiFDLJTQrEy7ItlNpU/O+UK6kW4geC+nq7dRXAUBp2E8ZaJ47EOB9g8HyET4cs52RbfUW9cylJ3sP3ln25tc5WwNDaXqsWT6Yu0TF/i8P+QF7iFHMu4sgNcTRGYx7kL4AYxyfcarz/QY6+fY6hOHklRtVNdnkmZFlYumLRgfjAkJhfMLW+syfn5vg3UFV0zuGnS201fcd3FwwM0XtXMrX/QPp9+RNnZcVuMHB23TpOHXfnS6H0l65k84oJDO31KZ5nDZSXFJC0ZSCPfrCQ7f4H2DBtKN9OXcg+naUrybxcdf+xw/ww50PGL1yNV0QOhvwYIr1XMvHj2exJMkhWgwwEHa/nBQzBO1g8dhKzpu4mvBzq8zSErBjMbX3WEN26XLVCvYIFY/ry+juTcdseR0VHrlo+CyW7ZD5D319HpOhrTbXk7R3ME2+7sc0erd6eRAtXkiUw5J5i9+JpvP3ZJqLtAZGs0G0BQ9JWJo2Zyvhlx0ktzyDRfyPThrpzKKeBJuFK6vktGwITEVMllbo9rJg+lr6yQresj3wv0xJx7AHDmk3s2ejBf9+cw6HCDnVvXa5ak+rHPrcPeP/1t1i4UOl01R6k+9zLq7d+RXbUSxglM97+CEruQJW6J1jvMRTfFcqjT0tgKI10Y+X0dxVcSQIYbugEDMt/WEZVqtLE6ZWQMUrmaOerFTBEgu5fDhUJ0TeSc+xJBt/ak3lBVRRbyolle1lSKgxk3cS5rN4VTkKGWVaH9F/bKqt17bLacXmxnIc4Vyp+kENgEK6k8sBr8U+Lp1DpPMvzAIageTcyuvdw1sfIhWq9ygMUMRC0+MsKGJKi2D9vFJvnvI0+8jWH/K0P787J45+yNrT1yBQ5T7GSTefYTRlz4AHyWiefw8OCKU2crzjxLMuvs1cBDMLKqMndKX1kqqM+lJ/lYju6XjAwFOmjOL5uDuMGvEPfIUMY0hr6DnXD64AH30jWgDdhZ7axdtwA3uw7hE8Hf0r/p/sxYttJIjLSSTi6kAVfDKLfu+b0Y74YyYrt7jwvJp+16cSEL+X7Mf9h9MTV7As8fmGTz/IIwp7FEB5J1K7FzBw+mDcHj2Ts50P5YtynPNxnDVp5H0NNNLu+GcpXX3uwK8Fqm1ZnXtcXkeS3mXkf9+ftkSMZNXIE300awON93Nhtj1ZvT7QCGJ5+nffeG8SQkSMZOXAkY772ZMXZDOcmn4/P5flbn2PA0M/4TKTvN4ov3Pfgk1hoPfmc2kxDeTxe4z9jyLBP+GjkSL4a9wmDhnzJwAsFhh/90Z31YuOYj3jpo451b93HUJ/O2a1z+e7dt9gRssZhxxTHG5QH3sHGj9/Ab/1dVIU6nhSWO1RZTB/WT3+JQwuc+ACLxRxDccQCFk3+QDpzX86r87U7pqg/WwHDmvnz2LF8CA0Kp6s2q67B6OjsnU7A4HhVVXXkTcQc70vgnEH0f2sEQ4eOZKRo+6nr2em7k522LAahiOXJ5zyzrM63Kasd9p3Iki6AIUEZGBpCruWjMR7sis51vMemi8BgjOxOts/9bPvmY/q93VpfUee5+zlzZiOz5P4ul1cyhCzmGDKKyT29ghMrXiV8u+ODAAXAqXbfzfduM9l4tti8cVA68PAFxU2QlquSIkIPURHvxBlQCpPunWXRPEiqTZ9JZWmCXQ+LBSvs3l4wMAgUKkqJJHinB5MmTWoPG0+iVp/iiE8AR4PiyC1KIT54J4ulON8yadJ2TupzyBNWRp6G4L1rcGtNP2PObOjv3FUAAAnuSURBVHacCGD5igC0GfkUGxI4/dMaNqzZw5HwaOKDvVnjtoUT6QZK5XkJC2tFRsZOFkNlPMEBYZyOyqK6vpDsuDB27dVQZjJiKjvHvl1hxGWXU1+g4eS+1UyfPp15Cxeyfv9hNm0+R0GjEaNgZd4JPKdMZ9YKX3Stx+rY5bBY/VqYiMrXU8pvxsyZrN2/n/UbQ+zT2niagsSVDHqhP58M+5JJ06czffpqtvhoyHFEqDabxKgwfL2Oogmcxwt392XM5O+YIqXfhl9UJtJYR9Rd5c/WpXs5VwZGE1Ro9rHhh3lSGReuXs363f4c8HNgDbXSkuIYa2ksCGPzpjDSy2pptOSzIZOUoG226y7qUqYlYONCxo2ZijZ9nQIwdMeouo/iM6uI9H2H2nD77gvLTlMT+z4bZ73LIXcnDtiTgaGxgpqsY4R4jcPx9xiuxBR1I0V772blzu/QnxuNxus14g/cg0lhQ51J83uaxV4He79qParTYQQE66kUp7cmOD7krTbqT2RpRtCYF8zmubOZI7X7dKYv3cPh02FERYV1btMKDUc27ORwUCJZtWZZVduTVVvlNNVD+legcfRpUbEZ8RaWe6zhV***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***1rPbhLg1pWfaDfxrQVHddb8znwCa1fytRe3qQiK1oHWibmoTmW6xtw+4vRV8WnXDv9HeT1MdopwJYURe2K4dIx2xziWz02av1KWOKsTMFTGDaFZrfQZ1SuozVyAoVRv051kr/qW738VwFBbW4vJZ***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***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***AvXsXMPyKBKLjyMH17BpNumTg1ycD9sDA8v3/A3BhQCqNeT5wAAAAAElFTkSuQmCC
答:可能的原因如下:
1.该时钟确实是没有,即一直为0,或者一直为1。
2. 该clk不是本模块产生的,而是其他模块产生,然后在此模块使用。这个时候有可能不能作为采样时钟。正确的做法,哪个模块产生的就使用那个模块的信号。例如常见的PLL的C0,C1等。
【问题2】 如果使用在线调试工具,测量一个信号低电平的间隔。
答:假设预期一个信号低电平时间为2000个时钟周期。那么可以如下设置。
1. 采集深度设置至少为2K,即2048个点,保证能采到一个低电平周期时间。
2. 触发条件为:该信号的下降沿。当触发条件满足后,查看低电平的采样点个数,即可测量出时间。
如果受资源限制,采样深度小于信号低电平时,可以在代码里添加计数器,通过观测计数器来推测出低电平时间。
【问题3】 采样时钟必须是时钟信号吗?
答:在线调试工具在采样时钟的上升沿,对信号进行采样。注意,在线调试工具不是智能的,它无法判断连接到采样时钟的信号是时钟。
它只是在采样时钟的上升沿,对信号采样。也就是说,连到“采样时钟”的信号,可以是任意信号。但一般来说,这没有任何意义。
【问题4】在线调试工具采集到的信号,其时间是怎么算的?
答:在线调试工具,每次触发时,只能看到 时间 =采样时钟频率*采样深度。 例如说采样时钟是50M,采样深度为2000个点,那么将只看到20*2000ns内的信号。
【问题5】在线调试工具严格反应FPGA内部数据么?为什么我的波形不对?
答:在线调试工具肯定是要严格反应内部数据的,如果这都做不了,那这FPGA也不用玩了。波形不对,只能说明
1. 你工具使用不当;
2. 这波形确实是不对。
【问题6】我们做了一个工程,用SOF文件运行不正常,但是加上逻辑分析仪检测数据正常运行,将该SOF生成JIC仍然不可以,一般遇到这种情况,什么原因啊?
答:一般是可以考虑时序不满足而导致的,具体请看时序报告
【问题7】使用ila的时候,有的信号看不到位宽定义,该怎么在ila中设置位宽?答:没有位宽定义的信号位宽就是1bit的
【问题8】如果我想看抓“模块的时钟”,看其波形是否正确,如何做?即观察信号是“时钟”。
答:通常想看“时钟信号”,一般的需求是2个。1. 看时钟有没有;2. 看频率正不正确。看时钟有没有:可以用一个更高频的时钟,作为“采样时钟”,对时钟信号进行观察,如果频率更高,就能看到是否有变化。
看频率正不正确:在线调试工具没法解决这个问题。建议将该信号拉到IO口,通过示波器来观察。
【问题9】在线调试工具抓取三态门信号,会报错,该如何解决?
答:一般三态门是放在接口上的,内部不会有三态信号。FPGA三态信号一般可分解成如下:
assign sdio = sdio_en?sdio_w:1'bz;assign sdio_in = sdio ;您可以抓取sdio_en和sdio_w来观察
【问题10】在明德扬提供的***NALTAP练习中,找到错误后,要如何修改?
答:明德扬提供的***NATAP练习,为了不让学员看到答案,专心找BUG,特意将有错误的代码封装成IP核的形式,即QXP格式文件。
该格式文件的内容是不可观看的。所以这些练习只要找到错误即可,不必修改。
由于问题比较多,没有全部展示出来,有需要的同学可以进MDY官网查看,网址http://www.mdy-edu.com/wentijieda/20210424/1359.html:如果同学们的问题我们帖子里面没有的请第一时间联系易老师,我们对新问题进行补充!
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