| 00:29 | apurvanandan[m] | Bertl, what protocol can be used to send the 4k data to the modules?
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| 00:29 | apurvanandan[m] | We won't be sending TMDS encoded data to these modules as you said
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| 00:44 | Bertl | just to sync the nomenclature here, the 'modules' are 'plugins'
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| 00:45 | Bertl | the protocol between Zynq and Artix/MachXO2 will be on top of LVDS
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| 00:45 | Bertl | TMDS would be one option, 'normal' 8/10 encoding another
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| 00:46 | Bertl | some kind of ECC or redundancy would be good for higher speeds as we can't simply retransmit incorrect data
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| 01:10 | apurvanandan[m] | What pixel depth is desired here
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| 01:11 | apurvanandan[m] | I mean number of bits per pixel?
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| 01:13 | Bertl | typically 8 - 12 bit
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| 01:14 | apurvanandan[m] | Can this be done by TMDS over 1ghz LVDS in 4k 25 fps?
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| 01:14 | apurvanandan[m] | Considering 6 TMDS pins
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| 01:17 | Bertl | no idea, probably not
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| 01:24 | apurvanandan[m] | If we want to use suppose 2 TMDS pin pairs for single color channel, that would make it 2Ghz of data and according to my calculation we require atleast 2.2GHz for this amount of data.
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| 01:24 | apurvanandan[m] | I guess we will need to lower the fps?
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| 01:28 | Bertl | we have a total of 12 LVDS pairs for a dual plugin module
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| 01:31 | apurvanandan[m] | But the isn't the USB 3.0 module mono/single plugin type?
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| 01:34 | Bertl | so what plugin are we talking about now?
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| 01:35 | Bertl | on the USB 3.x module, we have a limit of 400Mbyte/s throughput from the FT60x
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| 01:35 | Bertl | so there is no point in transfering more data to the plugin
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| 01:35 | apurvanandan[m] | Ok ok I got my mistake
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| 01:36 | apurvanandan[m] | Sorry
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| 01:36 | Bertl | no problem
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| 01:38 | apurvanandan[m] | One request, You said to put some link about MGTs on T721?
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| 01:39 | Bertl | yes, I said I'll do that
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| 01:39 | apurvanandan[m] | Ok :)
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| 01:40 | Bertl | https://www.xilinx.com/support/documentation/user_guides/ug482_7Series_GTP_Transceivers.pdf
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| 01:40 | Bertl | this is basically 'the' reference for the Artix GTP tranceivers
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| 01:42 | Bertl | (was added to the task)
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| 01:45 | apurvanandan[m] | Thanks!
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| 01:45 | Bertl | np
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| 02:04 | apurvanandan[m] | Bertl, In the AXIOM beta manual it is mentioned that USB 3.0 will be used to stream 4k 12 bit video at 25 fps, that turns out to be 4096216012325= 8 Gbit/s
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| 02:05 | apurvanandan[m] | This exceeds the ftdi limit?
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| 02:05 | apurvanandan[m] | 4096x2160x12x3x25=8Gbit/s
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| 02:07 | Bertl | 4096*3072*12*25 = 3774873600 = 4.7 Gbit/s
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| 02:07 | Bertl | *3.7 Gbit/s
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| 02:11 | apurvanandan[m] | Isn't the resolution to be streamed equal 4096x2160? as mentioned in manual.
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| 02:20 | Bertl | the the sensor can do 4096x3072 sensel
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| 02:21 | Bertl | but reducing the area to 4096x2160 would reduce the required bandwidth even more
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| 02:34 | Bertl | the reason for 4096x2160 is that even at full speed the FT60x can 'only' do 100Mhz clock on the parallel side, which in turn results in the 400MByte/s or 3.2Gbit/s datarate
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| 02:35 | Bertl | 4096x2160x12*30 = 3185049600 which is just below the limit
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| 02:36 | Bertl | but with a little lossless compression (green channels will be quite similar), I'm optimistic that we can also fit the full sensor data even at 30FPS
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| 04:15 | GC | joined the channel |
| 04:16 | GC | greetings!
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| 04:21 | Bertl | hey GC! how's it going?
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| 04:22 | GC | doing well! how are you?
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| 04:23 | Bertl | fine, tx!
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| 04:24 | GC | I believe I got the USB working again. Previously on the new nightly firmware lsusb showed nothing
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| 04:24 | GC | I looked at the old firmware I had from a while back and used the device tree usb settings from that and now it detects my wifi usb stick.
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| 04:25 | Bertl | ah, excellent! IIRC vup2/anuejn had problems with USB as well
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| 04:25 | GC | yeah. their is an open issue for it.
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| 04:25 | GC | https://github.com/apertus-open-source-cinema/axiom-beta-firmware/issues/88
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| 04:26 | Bertl | so would be a good idea to upload a diff of your changes
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| 04:26 | GC | yeah. Interestingly the kernel on my old SD card is 4.4, and the nightly build is 4.2 it seems
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| 04:28 | Bertl | might be related to xilinx vs. mainline, but 4.2 sounds old to me
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| 04:28 | GC | yeah
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| 04:28 | GC | Can you tell me the difference between the "beta" and "micro" firmware builds?
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| 04:29 | Bertl | the micro is based on a different development board
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| 04:30 | GC | ok. so I should stick with the beta I assume
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| 04:30 | Bertl | yep
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| 04:33 | GC | What's the preferred method to submit my device tree changes for review? Submit a pull request? I've been out of the loop so not sure what the current practices are development and review
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| 04:34 | Bertl | a pull request is certainly fine I'd say
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| 04:34 | GC | sounds good
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| 04:34 | Bertl | alternatively a patch (diff) for review ... whatever is simpler for you
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| 04:35 | GC | where would the diff be put for review? just in the issue notes?
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| 04:35 | Bertl | somewhere online or sent via e-mail or something like that
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| 04:57 | motoflare | Hello there
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| 04:57 | GC | do you know if the intention is to have wifi tools included in the base image? iwlist and wpa_supplicant aren't installed, although they are used in the AXIOM Beta Manual for wifi...
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| 04:58 | motoflare | I wish to participate For GSOC Is it Good time to get statred or am i late
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| 05:11 | shivamgoyal | left the channel |
| 05:22 | GC | Hi motoflare, I'm just getting back up to speed on the project. If you don't find the write person around on IRC you might try emailing someone on the apertus team familiar with the GSOC.
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| 05:24 | GC | Off to bed...
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| 05:29 | Bertl | motoflare: depends on how fast you are :)
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| 05:30 | Bertl | https://wiki.apertus.org/index.php/GSoC_Overview
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| 05:32 | Bertl | you need to finish one of the challenge tasks, write a CV and proposal and submit it before the evening of Tuesday 9th of April
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| 05:33 | Bertl | off to bed now ... have a good one everyone!
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| 09:21 | vup2 | GC: the kernel should be 4.20 not 4.2
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| 09:22 | parimal | Hey BAndiT1983, I have emailed my proposal draft on apertus team email, please have a look when you are free? :)
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| 09:27 | BAndiT1983 | hi parimal, nothing arrived yet
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| 09:28 | parimal | Hmm, that's weird, it shows sent 7 minutes ago. This is the email right? --> *email address removed*
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| 09:54 | anuejn | GC: i think an pull request would be best :)
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| 09:55 | anuejn | the plan is to install wifi tools, and craete a hotspot as a default
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| 09:56 | anuejn | it might make sense to add some option to act as a client too
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| 09:56 | anuejn | maybe a config file in the boot partition?
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| 10:59 | vup2 | anuejn: why would you put the config file in the boot partition?
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| 11:00 | vup2 | i would just do systemd / runit units
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| 11:01 | vup2 | and per default enable the one that creates a hotspot and make one that just connects as a client which can replace the hotspot one
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| 11:02 | anuejn | bc. the boot partition is fat32 and therefore editable with windows / mac computers easily
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| 11:02 | anuejn | similiar to what the rpi folks do
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| 11:03 | vup2 | if the default is creating a hotspot i don't really see a need to be able do edit it with windows / mac
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| 11:03 | anuejn | yeah well
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| 11:03 | anuejn | you are probably right
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| 11:03 | vup2 | the main issue i see with putting it in /boot is that it makes recovery harder
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| 11:03 | anuejn | recovery?
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| 11:04 | vup2 | if we do the btrfs "golden" snapshot just mounting that one instead of the normal snapshot makes the whole camera stock again
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| 11:04 | anuejn | yup
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| 11:04 | anuejn | mounting boot rw would probably be not too geat
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| 11:04 | vup2 | but if we start to put stuff into /boot and for example you fuck up your hotspot config there is no easy way to get that into factory state again
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| 11:05 | vup2 | (we would have to figure out a recovery solution for /boot then too)
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| 11:05 | vup2 | btw can you test GC's patch on the beta, i will test it on the micro...
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| 11:07 | anuejn | yup i am on it :)
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| 11:08 | vup2 | nice
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| 12:12 | parimal | hey BAndiT1983, please update me if you got the mail, otherwise I will send it again
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| 12:12 | parimal | I send it on the apertus team email id
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| 12:12 | parimal | sent*
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| 12:16 | Dev_ | joined the channel |
| 12:19 | Dev_ | Hey parimal , u can also submit a draft on GSoC website so mentors can review it.
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| 12:19 | Dev_ | just did it .
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| 12:20 | parimal | oh alright, someone said in irc logs to send it to the team email instead. I will submit it on the GSOC website, thanks :)
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| 12:20 | Dev_ | Hello BAndiT1983, I have submited the draft of proposal, please check it when u got time
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| 12:21 | Dev_ | yeah, i guess both ways are fine .
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| 12:21 | Dev_ | parimal
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| 12:21 | parimal | you picked T763 too right? framing capabilities for opencine? Dev_
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| 12:22 | Dev_ | yeah , u too
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| 12:22 | anuejn | alter
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| 12:22 | parimal | yep, same
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| 12:23 | anuejn | sorry was not intentional
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| 12:27 | Dev_ | Nice :D ,
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| 12:27 | Dev_ | parimal
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| 12:34 | Bertl_zZ | changed nick to: Bertl
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| 12:34 | Bertl | morning folks!
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| 12:41 | anuejn | morning :)
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| 12:47 | BAndiT1983 | Dev_, you should really stick to C++ notation also in your proposal -> methods Start with upper-case and use camel-case, variables/attributes start with lower-case and use camel-case
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| 12:48 | BAndiT1983 | classes start also with upper-case
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| 12:48 | BAndiT1983 | this is what i see as one of problems in your challenge code: inconsistency
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| 15:11 | Ashu | Hi Bertl , I have sent propsal draft on team's email id and also uploaded it on gsoc site , please review it and give me your feedback
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| 15:30 | Bertl | will do
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| 16:57 | Dev_ | yes BAndiT1983 , sorry I forget to change it, I will change in soon in both :proposal and challenge
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| 16:58 | BAndiT1983 | you should to use it by intuition, as forgetting is not an excuse, especially when working in a dev team in a company
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| 16:58 | BAndiT1983 | *you should learn to
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| 16:59 | Dev_ | sorry BAndiT1983, i will keep this in mind
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| 18:23 | mrohit[m] | Hello, mailed the draft proposal to *email address removed* . Please have a look when possible.
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| 19:09 | se6astian | mrohit[m]: received, thanks
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| 19:14 | BAndiT1983 | hi nira, please use main channel to discuss GSoC 2019 related topics
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| 19:20 | nira | hi, I'm Nira and I'm a telecommunications engineering student, I would like to apply for the GSoC but I'm doubting when choosing a project
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| 19:20 | Bertl | hey
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| 19:21 | nira | I'm interested in Live histogram, waveform, vectorscope or AXIOM Remote: miscellaneous drawing and management tasks
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| 19:22 | Bertl | great! be quick, finish the challenge task, write an application proposal and submit it together with your CV before Tuesday evening
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| 19:26 | nira | I've completed the C challenge and I've done audiovisual processing with Matlab at the university, I've never worked with PIC but I've used Arduino, I wonder if you could help me on choosing one of this both (T734 or T1126) as I'm interested on both of them
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| 19:27 | nira | thanks! I'm working on it
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| 19:28 | BAndiT1983 | i would suggest AXIOM remote task, rather interesting and there are no proposals till now, if i'm not mistaken
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| 19:37 | nira | ok, thank you! I will finish my application and submit it, I'm excited in all this and a little nervous
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| 20:56 | se6astian | off to bed
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| 20:56 | se6astian | good night
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