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#apertus IRC Channel Logs

2020/08/03

Timezone: UTC


02:27
fredy
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fredy__
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fredy__
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fredy
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05:22
Bertl_oO
off to bed now ... have a good one everyone!
05:22
Bertl_oO
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BAndiT1983|away
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Bertl_zZ
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12:34
Bertl
morning folks!
13:12
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Dest123
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14:59
Bertl
off for now ... bb;
14:59
Bertl
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15:01
BAndiT1983
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15:59
Bertl_oO
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16:00
se6ast1an
Meeting time!
16:00
se6ast1an
who is here?
16:01
bluez_[m]
* bluez_ is here
16:01
Bertl
is here ...
16:01
metal_dent[m]
is here
16:01
se6ast1an
great
16:02
se6ast1an
please go ahead metal_dent[m] with the first report
16:03
metal_dent[m]
hi everyone!
16:03
metal_dent[m]
so last week we had our evaluation period, so most of the time i spent on cleaning up my code and writing the report
16:03
metal_dent[m]
here is the link to my report -> https://drive.google.com/file/d/1nQ-_JvAXN7mp_bf8QzQ4n6gFnLUhusPy/view?usp=sharing
16:05
metal_dent[m]
also we decided to scrap off my ProcessCommand() method as it was giving a lot of trouble, so now i've divided the method into smaller sub-methods to ease any debugging process
16:06
metal_dent[m]
and also changed my python script to decrease the command string length (made it more compact), this also i have done so as to recognise the string parts (command, sequence number, checksum, fields etc) easily
16:07
metal_dent[m]
so the communication between the host PC and remote is almost established now!! just a few more testing should be done and after that it's good to go :)
16:07
metal_dent[m]
that's it from me! thank you
16:08
se6ast1an
many thanks!
16:08
se6ast1an
bluez_[m] you are next, please share your report with us
16:08
bluez_[m]
thanks! here is my report -> https://drive.google.com/file/d/1XxUCo4E4EjMdfU9HKhAgaJ09wq88L1E8/view?usp=sharing
16:09
bluez_[m]
so finally the issue that my driver could not be probed when used with the mux... is not resolved!
16:09
bluez_[m]
s/not/now
16:09
Bertl
*phew*
16:09
bluez_[m]
i updated the code as well as readme
16:10
bluez_[m]
https://github.com/Swaraj1998/axiom-beta-rfdev
16:10
bluez_[m]
Bertl: sry xD
16:10
bluez_[m]
now the two mxo2s can be separately dealt with
16:10
bluez_[m]
for the older power boards that is
16:11
bluez_[m]
the ones with pca9540 mux
16:11
bluez_[m]
so this week ill be focusing on implementing the support for other powerboards as well
16:11
bluez_[m]
with different muxes/switches
16:12
bluez_[m]
and possibly also change the pic firmware with bertl so that we can configure jtag ports with just a simple command through i2c bus
16:12
bluez_[m]
thats it from me!
16:12
se6ast1an
many thanks!
16:13
se6ast1an
preetimenghwani[: please go ahead
16:13
preetimenghwani[
Hello everyone, this week i mostly spent in debugging the minimal framework, as when i tried extending the minimal framework for 64 sensel mode there were some issues.
16:14
preetimenghwani[
I also tried adding 64sensel mode to whole pipeline but there were some issues with that too.
16:15
preetimenghwani[
So currently focussing on debugging the minimal framework as adding 64sensel mode in that would be easier.
16:15
preetimenghwani[
And here is my report:https://drive.google.com/file/d/1_UC7dNhAV7MBLd9xbt8p9yChvfFqvSo4/view?usp=drivesdk
16:15
preetimenghwani[
Thats it from me!
16:16
se6ast1an
many thanks!
16:16
se6ast1an
quick update from me:
16:17
se6ast1an
the hackathon started: vup and anuejn have arrived in vienna yesterday and are sitting next to me now at the factoryhub
16:17
se6ast1an
I benchmarked a few ssds with the ultra96-v2 connected over USB3 last week
16:18
se6ast1an
here is a screenshot from current results: https://paste.pics/9Q689
16:19
se6ast1an
unfortunately the datarate from single ssd does not double with two connected
16:19
se6ast1an
best results were 424MB/s with two SSDs
16:20
se6ast1an
single SSD best result was 270MB/s
16:21
se6ast1an
now I started evaluating the cooling capabilities of our injection molded heat sink part: https://www.apertus.org/sites/default/files/Injection_Moulding_02-small.jpg
16:21
se6ast1an
no results on wiki yet but the setup stands and the script to record temperatures works
16:21
se6ast1an
done from my side
16:21
se6ast1an
vup/anuejn?
16:22
vup
well anu3jn and me sucessfully arrived in vienna
16:22
vup
for now we starned working on th usb3 plugin module again
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Dest123
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16:22
Bertl
yay!
16:23
vup
it uses a ft601 fifo to usb3 chip to bring the live video to a computer where it can be recorded
16:23
vup
unfortunately it seems difficult to acheive the advertised datarate for some reason
16:23
Bertl
https://wiki.apertus.org/index.php/1x_USB_3.0_Plugin_Module
16:24
Dest123
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16:25
vup
so now we are trying once again, this time without the proprietary fdti driver, which hopefully eliminates one slow part
16:25
vup
I think thats it from me
16:25
se6ast1an
great!
16:26
se6ast1an
Bertl: please finish us :)
16:26
Bertl
does a special move ...
16:27
Bertl
well, the last week, besides the second evaluation, I did mostly work on hardware again
16:27
Bertl
the remote setup was somewhat rearranged and now features three partial betas
16:27
Bertl
the unused remote was removed to make some space there
16:28
Bertl
the partial betas also contain various shields and CSOs to allow for testing, debugging and experimentation
16:29
Bertl
I also assembled the necessary hardware for the third beta as well as special hardware to low level digitize HDMI signals
16:29
Bertl
http://vserver.13thfloor.at/Stuff/digitizer_03.jpg
16:29
Bertl
(this is an intermediate state, the hardware is now completely assembled)
16:30
Bertl
and today I'm at the hackathon in Vienna ...
16:30
Bertl
that's it from me for this week
16:30
se6ast1an
great, thanks!
16:30
se6ast1an
anyone else who wants to report ?
16:31
se6ast1an
apoorva_arora: ?
16:31
bluez_[m]
can i ask...what exactly is an HDMI digitizer? ':D
16:32
bluez_[m]
i mean where will it be used?
16:33
Bertl
yeah, digitizer might be a little confusing
16:34
bluez_[m]
ah, alright alright
16:34
Bertl
the design is based on the Trenz TE0714 module
16:34
Bertl
which is basically an Artix module with multi gigabit tranceivers
16:34
Bertl
the idea is to have high speed input and output compatible with HDMI (i.e. CML)
16:35
Bertl
so that we can test various aspects of HDMI output and input
16:35
Bertl
the problem so far is that we do not exactly know how our HDMI signal is received at the lowest layer
16:36
Bertl
and thus we want to capture the signal with the Artix MGTs to further analyze it
16:36
bluez_[m]
ah, i see
16:37
Bertl
so I just called it digitizer for now, the official name is more like TE0714 HDMI interface bord :)
16:37
Bertl
*boatrd
16:37
Bertl
*board
16:37
bluez_[m]
yea cuz google search for hdmi digitized did not land me anywhere xD
16:38
bluez_[m]
alright thanks! now please continue with the reporting (anyone?)
16:38
se6ast1an
very good input indeed bluez_[m]!
16:39
se6ast1an
I think we are done for today
16:39
se6ast1an
meeting concluded, many thanks everyone who attended!
16:39
bluez_[m]
thanks!
16:43
kbeckmann
sorry for barging in here but what issues are you having with HDMI?
16:47
Bertl
the problem here is that we have had some issues with specific hardware, e.g. Atomos Shogun and the CamLink4K
16:48
Bertl
where we had to adjust our sync signals in 'unexpected' ways to make it work
16:48
Bertl
as this doesn't make much sense to us, we suspect some non-trivial problems in the HDMI we generate
16:48
Bertl
and that is mainly why we want to investigate this further
16:51
kbeckmann
oh okay. so this board will act as a sniffer where you get the raw 8b10b encoded data stream?
16:51
vup
yep
16:52
kbeckmann
i was thinking of building exactly this board but with an ecp5 but got stuck with other projects :)
16:52
kbeckmann
good luck and hope you can find your issue.
17:02
Bertl
thanks!
17:40
BAndiT1983|away
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BAndiT1983
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