Thursday, 2020-08-20

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sidchaHi, I just got a tomu board delivered. Played around with the quickstart repo and then flashed the u2f firmware and got it to work. I was wondering if Tomu can be my hardware GPG key store for encrypting emails and git-signing my commits.10:03
sidchaIf it's not directly possible, some pointers on where to start on such a quest would be helpful.10:04
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hinzundcodeHi, I got my Fomu at 36C3 and finally have some time to play around with it :) I want to hook it up to a VGA monitor. It works if my color signal is generated with combinational logic, but as soon as I use registers it doesn't work anymore. VSYNC and HSYNC are still generated, but the color signals are always 0. I'm new to FPGAs and don't know how15:28
hinzundcodeto debug this properly. Any ideas? https://gist.github.com/hinzundcode/3162d6bfbcf0d5842d82d9e3e037055f15:28
tpbTitle: fomu_vga.v · GitHub (at gist.github.com)15:28
tntwell ... that counter is 29 bits, it's going to take 21 second for it to wrap, and you'll only see anything for like 1 frame out of 21 second ..15:33
tnt(assuming that the very _little_ time that this counter ends up between 0 and 200 matches the time vpos is between 100 and 200)15:35
hinzundcodeoups :D  thank you very much15:39
hinzundcodeI tried to adapt the litex example from fomu workspace so that I can move the square on the screen over USB using wishbone-tool. As soon as I write something else than 0 to gpu_x0 the square disappears and the screen turnes black. If I set the register to 0 the square appears again. Whats wrong?15:53
hinzundcodehttps://gist.github.com/hinzundcode/129d0f81fe24257240d55401f04cdb5a15:53
tpbTitle: README · GitHub (at gist.github.com)15:53
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