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About jmccabe

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  1. Hi I'm trying to use the "cat file.bin > /def/xdevcfg" technique to load an FPGA bitstream into the Zynq on my Cora-Z7-10 board from Linux but it hasn't worked; every time I try it I get "cat: write error: Connection timed out". Does anyone know whether this is a known issue or what? I've tried the cora_z7_10_wrapper.bit directly, then the same file but re-generated from the Cora Vivado project (checking that the content is binary identical), then modified the settings so that the bit file is not compressed and also generates a bin file, and tried both of those (as well as the bin
  2. I have a Cora-Z7-10 which we bought to get an early start with some embedded linux stuff. I have it running ok by following the instructions on the wiki but we're intending to use a more up-to-date version of Petalinux (i.e. later than 2017.4) on our custom-designed hardware. Since that hardware isn't available yet, we'd really like to be able to update the petalinux version we're using on the Cora, particularly as we have a need to re-configure the FPGA from Linux and (as I understand it) the mechanism changed at 2018.1 (i.e. the /dev/xdevcfg driver was deprecated). Has anyone achieved t
  3. Hi, I've opened the Cora-Z7-10-base-linux project in Vivado 2017.4 (to avoid any version-dependent issues) on Linux, and I was hoping to be able to route the UART 1 device from the ZYNQ7 Processing System out to the outside world. Ideally I'd like it to be wired up to the DP0 and DP1 pins, as I have a nice little Arduino Click2 adapter that I can put an RS485 Click board one. However, being very new to all this Zynq/Cora/Vivado stuff, I'm not sure how to do it. I started off (with a bit of advice from someone who knows more about this than me, but was rushing off home!) by openi
  4. Ignore that - the reason I was having that problem was because I hadn't use --recurse-submodules when I'd cloned the Cora-Z7-10-base-linux git repository. I should've used git clone --recurse-submodules John
  5. Sorry if this is a stupid question, but can you explain a bit more what is meant by "Make sure that your project has the vivado library installed in the repo folder"? I'm new to Vivado, and that sort of thing in general (I'm really a software engineer), but I have he same issue with pwm_rgb as described above when I open the project in 2017.4 so I guess I must've missed a step somewhere. Many thanks John
  6. Just thought I'd let you know your suggestion worked, so I've marked it as the answer. Thank you for that.
  7. Thanks for your reply. I'll have a go with mrproper and let you know if that helps.
  8. I'm just starting out with the CoraZ7-10 and having what seems like a weird issue. I've followed the getting started stuff at to the letter and packaged up a BOOT.bin and image.ub that loads and boots fine. I now want to try a simple custom application, so followed the instructions to the letter in the section "Creating and Adding Custom Applications" (for a C++ app) in the Petalinux reference guide for 2017.4 (, followed by the "