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About lijieming

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  • Birthday June 11

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    Vision & Motion

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  1. hi hiketen, you may try to reformat your sd card follow this link I met this problem before and finally solved it by change a new sd card.
  2. This problem may occur after failed to program the FPGA in the SDK environment. a simple restart of your computer will solve it. if it still happen, backup your src, delete <your_prj_name.sdk> folder and export hardware again will complately solve it
  3. Hi Chris, Since you are currently developing a Linux embedded system. A Linux host system running on your PC is necessary. dts can not compile into dtb under windows environment. Suggest OS is Ubuntu 14.04 LTS or Cent OS 7 Under Linux environment, the easiest way to handle everything related with zynq and embedded OS is Petalinux solution provided by Xilinx. this tool contains everything you need to make the embedded os to work. Jieming
  4. Dear Chris, 1. Like Run suggested, the error "IO Group: 0 with : SioStd: LVCMOS18 VCCO = 1.8 Termination: 0 TermDir: BiDi RangeId: 1 Drv: 12 has only 0 sites available on device, but needs 2 sites." such kind of problem is caused by one or more unconnected external ports on your block diagram. Please check your diagram first to make sure all unused external ports are deleted. (this problem will occur on both 2014.4 and 2015.1) 2. For the DDC part, the HDMI protocol described it clearly that this is a mechanism to let video transmitter and receiver to communicate which each other. By exc
  5. Hey Guys, Glad to see your progress of the video project. Sorry for coming back late (have been on vacation aboard last week). Still willing to help with anything Jieming
  6. Hi Chris, It's so happy to see your post since I am just finished a prototype project that very similar to yours except the video will not transmit by eth but being processed on board. based on my experience I give the following answers to your ques: 1.You thought is absolutely right (my project worked well now just based on this architecture) 2.No VTC is needed at the final stage. But it's strongly recommend you add a VTC during debugging. During my experiment I find out even all of the video source I used marked as "1080p 60p", the video timing is still varies very much due to different reco
  7. hi Hiketen, The hands on tut has already a kind of "expired". after you make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi- xilinx_zynq_defconfig you can compile the kernel straightforward make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi-