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#apertus IRC Channel Logs

2020/03/26

Timezone: UTC


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