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#apertus IRC Channel Logs

2014/09/03

Timezone: UTC


00:15
Morethink
joined the channel
00:15
Morethink
Morning!
00:25
Morethink
I have reviwed most all of materials on github. Thanks a lot for friends of Apertus team. I think I can do something in embeded area. Anyone can send me the schedule of Apertus,especailly Schematic,PCB ,C programing and FPGA(EDK only)?
00:32
Bertl
sounds good, do you have access to a microzed?
00:35
Morethink
No, I used ZEDboard only.
00:37
Bertl
well, they are reasonably similar, but Beta will use the microzed as platform, so access to that would be definitely beneficial
00:37
Bertl
do you have experience in linux driver development?
00:39
Morethink
linux driver?
00:39
Bertl
device driver for the linux kernel
00:42
Morethink
I tested linux GPIO driver on ARM .I think I can do it.
00:43
Morethink
But I never make a really linux product driver
00:43
Bertl
well, do you like a challenge? :)
00:44
Bertl
we just finished the dual micro SD hardware and it requires kenel support to become really useable
00:44
Morethink
of course! I like challenge.
00:45
Bertl
basically it works already with the existing SD driver, so there is a good start, but it needs support for switching between the two cards
00:45
Bertl
and it would be really great to handle that transparently
00:49
Morethink
Let me start apterus from cards drivers
00:51
Morethink
Is there a specifaction or function description?
00:51
Bertl
a schematic of the latest version can be found here http://vserver.13thfloor.at/Stuff/AXIOM/BETA/microzed_sd/microzed_sd_v0.5_r1.1.pdf
00:52
Bertl
the external SD interface works basically identical to the internal SD, via the hardened zynq SD controller
00:53
Bertl
what we added on the external interface is an SD switch/level converter similar to the one already used on microzed/zedboard and some other devices on the I2C bus to do the switching
00:53
Bertl
(and a fan controller too)
00:54
Bertl
everything is interfaced via the PS PMOD port, on the zedboard that is port E
00:56
Bertl
for the specification: transparent switching would mean that the driver creates two fully functional mmc devices for userspace and interleaves the access to each card based on the requests
00:57
Bertl
i.e. if you access the first device, it ensures that the first card is selected before sending any commands and if the second device is accessed, it does the same for the second card
00:57
Bertl
the actual hardware access needs to use a semaphore machanism to prevent concurrent access, but otherwise it should be straigth forward
01:02
Morethink
Ok,I will make detail specification acordding to these infomation to confirm all of the fuctions.Then I will start make driver.
01:03
Morethink
Can you send me the pdf to my Email: Morethink@yeah.net? I can not access the web site.
01:04
Bertl
sure, no problem
01:06
Bertl
do not hesitate if anything is unclear
01:06
Bertl
*hesitate to ask
01:09
Morethink
OK
01:09
Morethink
thanks,Bertl
01:10
Bertl
you're welcome!
01:14
Morethink
received pdf.
01:14
TiN
changed nick to: _TiN_
01:14
Bertl
excellent! do you have an idea what blocks your access to my site?
01:17
Morethink
Don't know yet. Maybe the company network forbidden some IP. I will try to access it in my home networks tonight.
01:18
Bertl
ah, okay, thanks!
01:18
Morethink
Welcome
01:22
Morethink
will Apertus use SD card as a video storge?
01:23
Bertl
not for video, the bandwidth would be too small, but for still images and similar
01:24
Bertl
the SD interfaces maxes out at 50MB/s which is by a magnitude small as what is required for proper raw recording
01:31
Morethink
still image is the first step of Apertus,isn't it?
01:32
Bertl
yes, that was the first step for alpha, and it will be the first step for beta
01:32
Morethink
OK
01:32
Bertl
but in general, some folks are more interested in high quality still images than in moving pictures :)
01:32
Morethink
I will try my best
03:04
_TiN_
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04:43
Morethink
left the channel
04:47
TiN
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04:50
Morethink
joined the channel
06:34
Bertl
off to bed now ... have a good one everyone!
06:46
Morethink
Good night ,Bertl.
07:00
se6astian|away
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07:13
daniel
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daniel
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07:13
Guest20046
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10:15
Morethink
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10:25
Morethink
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10:26
Morethink
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10:49
_TiN_
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11:02
ThatCantBe
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11:18
TiN
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11:58
se6astian
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12:38
Bertl
morning folks!
13:45
_TiN_
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13:57
FergusL
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FergusL
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14:45
se6astian|away
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darthrake
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darthrak1
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17:33
danieel
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niemand
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aombk
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19:24
aombk
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19:24
wescotte
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niemand
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21:06
se6astian
time for bed
21:06
se6astian
good night
21:06
se6astian
changed nick to: se6astian|away
22:35
TiN
changed nick to: _TiN_
23:29
Topic
apertus° - open source cinema | www.apertus.org | Currently Hot: AXIOM Beta https://apertus.org/axiom-beta | IRC Logs available at: http://irc.apertus.org
23:29
se6astian
has set the topic
23:38
_TiN_
changed nick to: TiN