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| 07:59 | Bertl | morning folks!
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| 08:13 | kbeckmann | good morning!
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| 08:14 | kbeckmann | i think i will do a test today where i connect a logic analyzer to the control pins on the ft600 to visualize exactly how bad USB 3 + ftdi drivers are essentially.
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| 08:15 | Bertl | sounds like a plan!
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| 08:18 | se6ast1an | good day
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| 10:25 | Bertl | off for now ... bbl
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| 18:05 | AndroUser | Test
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| 18:05 | RexOrCine_OnTour | Tesr
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| 19:26 | anuejn | kbeckmann: any results?
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| 19:27 | anuejn | (I am quite interested in seeing why the test results from bertl were so disappointing)
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| 19:44 | se6ast1an | wiki: codeformating has been updated
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| 19:44 | se6ast1an | https://wiki.apertus.org/index.php/Sandbox#Code_Formatting
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| 19:44 | kbeckmann | i did some testing today and honestly it looked pretty good
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| 19:44 | se6ast1an | use:
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| 19:44 | se6ast1an | <pre class="code">
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| 19:44 | se6ast1an | </pre>
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| 19:44 | se6ast1an | the space before the first <pre... is important
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| 19:44 | se6ast1an | kbeckmann: nice!
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| 19:45 | se6ast1an | can you share?
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| 19:46 | kbeckmann | sorry for the format, but i recorded a stream that i did a few hours ago. let me see if i can find the interesting timestamps. but MB/s-wise, i get 190 MB/s out of 200 which is the theoretical max.
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| 19:47 | kbeckmann | https://www.twitch.tv/videos/695349295 the interesting stuff starts at around 27 minutes
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| 19:47 | se6ast1an | that indeed sounds very promising!
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| 19:47 | kbeckmann | i attached a logic analyzer to the state machine and plotted the transitions
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| 19:49 | Bertl | kbeckmann: what logic analyzer is that?
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| 19:50 | Bertl | I recognize the GUI (Saleae) but the dvice looks like one of the chinese logic analyzers
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| 19:50 | Bertl | *device
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| 19:51 | kbeckmann | yep it's one of those cheap clones. sampling at 12MS/s
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| 19:51 | Bertl | okay, so you are running at less than 6MHz there?
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| 19:52 | kbeckmann | what i was looking for was significant delays, that we should see even with that
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| 19:52 | Bertl | well, we were 'good' up to about half the theoretical bandwidth limit
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| 19:53 | Bertl | so I wouldn't expect anything unusual at 6/10MHz :)
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| 19:53 | kbeckmann | mm.. but i was expecting to see a few us of delay actually
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| 19:53 | kbeckmann | but that didn't show up at all
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| 19:57 | Bertl | I suspect the issue we were seeing resulted from the driver not being able to handle the data properly
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| 19:58 | Bertl | i.e. not the FT60x side, but the receiver side
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| 20:04 | kbeckmann | i see. maybe you could test writing a loopback or constant source gateware and test it with the example code that just consumes data?
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| 20:05 | Bertl | yes, we have a generator HDL which does simply feed PRNG data all the time
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| 20:06 | Bertl | I'm currently swamped with unrelated stuff, but it should be better next week, if you like we can get a test setup you can access remotely or so?
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| 20:06 | kbeckmann | ah i see
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| 20:06 | kbeckmann | oh yeah sure, that sounds cool
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| 20:07 | Bertl | great! I'll keep you updated on the progress then
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| 20:07 | kbeckmann | sounds good :)
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| 20:09 | Bertl | btw, nice 'live stream'
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| 20:09 | Bertl | do you do that on a regular basis?
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| 20:10 | kbeckmann | thanks, it was my first so i probably just rambled :p
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| 20:10 | kbeckmann | i am thinking of doing that but not sure if people are interested
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| 20:11 | kbeckmann | i'll try to have a better focus next time and announce it earlier. this was basically just a test
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| 20:11 | Bertl | not bad for a first/test run
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| 20:11 | kbeckmann | thx
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| 20:12 | Bertl | I've seen a lot worse from established live streamers :)
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| 20:12 | kbeckmann | hehe
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| 20:12 | kbeckmann | i am not used to talk and think at the same time. always messed up when whiteboarding etc :p
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| 20:12 | Bertl | you'll get used to it ...
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| 22:00 | Bertl | off to bed now ... have a good one everyone!
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