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#apertus IRC Channel Logs

2020/03/26

Timezone: UTC


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03:48
Bertl_oO
off to bed now ... have a good one everyone!
03:48
Bertl_oO
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bertl_zZ
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BAndiT1983|away
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08:59
preetimenghwani[
Hello bertl!
08:59
preetimenghwani[
For T871 do we need to do post route simulation of both deserializer and serializer or only deserializer?
08:59
preetimenghwani[
Currently my serializer is in test bench
09:36
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09:48
Bertl_zZ
changed nick to: Bertl
09:48
Bertl
morning folks!
09:49
Bertl
preetimenghwani[: that's okay, no need to implement the serializer
09:50
vup
morning :)
09:51
se6ast1an
good day
10:13
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XYZ123
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11:16
schmoggie
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11:17
schmoggie
tach
11:18
se6ast1an
hi!
11:18
se6ast1an
Bertl: you around?
11:18
Bertl
yup
11:19
se6ast1an
great
11:19
se6ast1an
jan so what is your current status?
11:19
schmoggie
i build my workspace as of recent ubuntu in a parallels vm
11:20
schmoggie
and compiled a new kernel.
11:20
schmoggie
and read thru the other "reverse engineering" things.
11:21
schmoggie
also getting a sony-e camera + lens to do some serial tests
11:21
se6ast1an
would you plan the next step to be listening in on emount communication with a known working camera?
11:22
schmoggie
yes. but also in parallel try to adopt the other emount hacks in a trial on the apertus
11:22
schmoggie
hence my question where is the entry point for the lens comms, e.g. where can i query/program the pins
11:23
Bertl
probably the best way here is to either reuse an existing or design a shield suitable for lens control
11:23
Bertl
really depends on the required interfaces and voltages
11:24
schmoggie
okay, so at the moment it is the e-mount connected no where ( havent taken the mount apart)
11:24
Bertl
do you know what control signals you need and what voltage levels they have? what about power supply for the lens-system?
11:24
Bertl
correct, the current e-mount is only passive, no electrical connections yet
11:25
schmoggie
ah
11:25
schmoggie
according to https://github.com/LexOptical/E-Mount
11:26
pratyush
is here a discussion realted to lens auto focus going on ?
11:27
schmoggie
so it's 10 pins.
11:27
schmoggie
750kbaud , but init is 1.5mbaud
11:28
schmoggie
so 5.0V, VCC lines are 3.15V, 2 serial pins
11:29
schmoggie
so a serial uart,via i2c maybe ?
11:30
Bertl
1.5mbaud is no problem at all, the question is more about the 5V
11:31
Bertl
how much power can the lens system draw for example
11:31
Bertl
do the communication lines work with 3.15? V
11:31
Bertl
etc
11:32
Bertl
http://camera-wiki.org/wiki/Sony_E_mount_reverse_engineer
11:32
Bertl
this might have some useful infos
11:32
schmoggie
https://docs.google.com/document/d/1iw54nzrF0bzQgLINpcP9F8Odd0N5cd7LjlwCDPTNZK0/edit#heading=h.dk3gmdgcv9gp
11:34
Bertl
okay, so the 3.15V logic can be handled by one of the existing shields, but it requires a regulator or 3.15V input
11:35
Bertl
leaves the question how much power the lens can draw on LENS_POWER and LOGIC_VCC (or is that an output?)
11:37
BAndiT1983
nope, looks like negotiated 5v or unregulated 6.4
11:37
BAndiT1983
*7.4v
11:38
se6ast1an
power usage will need to be measured with the camera/lens sniffing adapter I assume
11:39
pratyush
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11:39
BAndiT1983
nice, just seen the link to apertus on wiki
11:39
BAndiT1983
maybe the sony service manual is listing the voltage also, at least for reference
11:42
BAndiT1983
page 4-1 has lens related things on the left side -> NIMB contact unit
11:43
BAndiT1983
4-3 at right-bottom has lens power control
11:43
BAndiT1983
*bottom-right
11:45
BAndiT1983
6-21 has a motor driver, but a bit hard to distinct
11:46
BAndiT1983
and 6-22 lens interface
11:47
schmoggie
that will i do. have an arduino shield
11:48
schmoggie
(power measurement)
11:48
schmoggie
i would assume no more than 100mW
11:49
se6ast1an
I thought of just using a volt meter but something more sophisticated is even better I guess
11:49
BAndiT1983
if i decipher it correctly, then i also see 4.8V on 6-22
11:49
Bertl
just be careful with any arduino, it's not clear how strict the 3.15V really is
11:49
BAndiT1983
and 3.1V
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XYZ123
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11:56
se6ast1an
ok schmoggie, all questions resolved for now?
11:57
se6ast1an
anything else we can do/help to support you?
11:59
Bertl
might be worth looking for an e-mount datasheet (even if it doesn't have details, it might specify the maximum current or so)
11:59
BAndiT1983
schmoggie: have you looked at dyxum forum already, quite a long thread, but i suggest to read the last 4-5 pages, quite interesting approach
12:01
schmoggie
ok will do.
12:01
schmoggie
url ?
12:02
BAndiT1983
is also in wiki, but here it is -> https://www.dyxum.com/DFORUM/emount-electronic-protocol-reverse-engineering_topic119522_page11.html
12:06
se6ast1an
ok going out for a bit, afk
12:07
Bertl
with the dog?
12:08
BAndiT1983
nah, just a leash is already enough, can tell the police that dog ran away
12:08
Bertl
stiff leash with wirecore -> invisible dog :)
12:09
BAndiT1983
now you know which companies will get bigger income at the moment
12:09
BAndiT1983
TP and invisible dog leash manufacturers
12:09
schmoggie
heh
12:10
schmoggie
also making some food and then hunt for a cheap e camera lens
12:21
schmoggie
interesting:
12:21
schmoggie
https://www.amazon.de/Samyang-Station-Objektive-Firmware-Update-Fokus-Einstellungen/dp/B076SDSKVX
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12:22
Bertl
nice
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14:17
anuejn
good morning :)
14:17
Bertl
off for now ... bbl
14:17
Bertl
changed nick to: Bertl_oO
14:29
preetimenghwani[
Hello bertl!
14:29
preetimenghwani[
the deserialized data which is obtained from the sensor how is it currently stored in DDR memory without repacking?
14:50
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Shashwat
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15:22
Bertl_oO
it is repacked into 64bit words with RG/GB 12bit in one word and 16bit padding
15:24
Bertl_oO
this is also documented on the wiki
15:32
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BAndiT1983
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15:47
preetimenghwani[
But in pixel remapper task we need to do the repacking in same way right ?
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BAndiT1983|away
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BAndiT1983
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18:35
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18:35
Wanderer_99
Hello everyone!
18:37
Wanderer_99
In T871 challenge it has been mentioned you can use hardened SERDES block
18:37
Wanderer_99
So what exactly are we supposed to do?
18:38
Wanderer_99
Is it to take one hardend unit and make it flexible wrto all different styles of encoding?
18:47
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BAndiT1983|away
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19:04
bluez_[m]
Hello Bertl_oO ! I have finished my draft proposal and shared it in the GSoC portal. Please have a look and comment.
19:05
bluez_[m]
I haven't attached a CV yet. Currently working on it.... Bdw is it okay if I give the CV in my institution's format? ':D
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BAndiT1983
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BAndiT1983|away
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19:43
Bertl_oO
Wanderer_99: this is certainly a suitable option
19:43
Bertl_oO
bluez_[m]: will check shortly
20:18
Bertl_oO
bluez_[m]: looks good, maybe add your IRC nick as well :)
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