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| 04:07 | Bertl_zZ | changed nick to: Bertl
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| 04:07 | Bertl | morning folks!
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| 05:09 | Bertl | changed nick to: Bertl_OO
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| 07:35 | cbohnens|away | changed nick to: cbohnens
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| 07:38 | Francky | joined the channel |
| 07:39 | Francky | hi all
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| 07:40 | Francky | I am learning VHDL and FPGA systems and I tried to understand the apertus project
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| 07:40 | Francky | Is there some documentation about the code somewhere ?
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| 07:43 | philippej|away | changed nick to: philippej
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| 08:31 | S3bastian | joined the channel |
| 08:31 | S3bastian | good morning
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| 08:32 | S3bastian | Hi Francky, you can check the code itself for comments, other than that there is now FPGA code documentation that I know of
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| 08:32 | S3bastian | Bertl will be happy to answer any question about it though
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| 08:32 | S3bastian | *now -> no
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| 08:39 | Francky | Thank you
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| 08:39 | Francky | i'm reading both vhdl and sensor datasheet to understand the mecanisms
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| 08:43 | S3bastian | great
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| 09:17 | Francky | can you confirm that the files in the folder cmv_hdmi2 are the "main" project ?
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| 09:18 | Francky | the other forlders are just developping projects ?
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| 09:21 | Bertl_oO | yes, cmv_hdmi2 is the recent AXIOM Alpha source
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| 09:41 | Francky | hi Bertl, I red some of IRC logs and it seems that you are the FPGA boss :)
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| 09:42 | Bertl_oO | well, at least I'm doing most of the coding, yes :)
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| 09:45 | Francky | if I understand right, you have a linux on the ZYNQ arm that configure the sensor
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| 09:45 | Francky | whereas the FPGA part is taking LVDS signals and send them to hdmi ?
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| 09:46 | Bertl_oO | yes, correctly
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| 09:47 | Bertl_oO | https://wiki.apertus.org/index.php?title=AXIOM_Alpha_Software#Image_Pipeline
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| 09:47 | Bertl_oO | here you can see what happens in the FPGA
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| 09:47 | Francky | thank you
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| 09:47 | Bertl_oO | np
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| 09:48 | Francky | the "Memory" block is the DDR3 memory of the board ?
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| 09:48 | Bertl_oO | yep
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| 09:49 | Bertl_oO | so the images are also accessible from the ARM cores
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| 09:49 | Bertl_oO | (which is for example, what is used for snapshots)
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| 09:50 | Francky | ok
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| 09:50 | Francky | and this is why you use AXI and ADDR generator into FPGA
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| 09:51 | Bertl_oO | correct
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| 09:54 | Francky | is there a project that implement only the "Image Acquisition Pipeline" in GIT ? It is to start with a smaller number of vhdl files
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| 09:55 | Bertl_oO | yes, basically the cmv_io(2) was that, but it is probably simpler just to pick the relevant files from the cmv_hdmi2, as they only exchange minimal information (synchronization) and the data is stored/fetched from memory anyway
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| 09:56 | Bertl_oO | so all files starting with cmv are basically the sensor interface
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| 09:57 | Bertl_oO | then there is the remapper (pixel_remap), some correction for noise (luts) and the high performance writer (to memory)
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| 09:58 | Bertl_oO | ser_to_par and par_match is used by the sensor interface for deserialization/pattern matching)
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| 09:59 | Bertl_oO | reg_spi is the SPI interface/mapper for accessing the sensor registers
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| 10:10 | Francky | I have to quit IRC to go to lunch. I will come back ! Thank you
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| 10:26 | Bertl_oO | you're welcome!
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| 13:54 | Francky | hey i'm back
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| 13:55 | Francky | i have another question about I2C and sPI
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| 13:55 | Francky | I undestand that SPI is used to speak with sensor
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| 13:55 | Francky | but why there are 2 I2C bus ?
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| 13:59 | Bertl_oO | because we control some components via I2C
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| 14:00 | Francky | i see hdmi in the wiki
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| 14:01 | Bertl_oO | http://vserver.13thfloor.at/Stuff/AXIOM/ALPHA/cmv12k-adapter-v1.0.pdf
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| 14:01 | Francky | but for example I try to understand the cmv_io2 project, and there are 2 I2C bus whereas there is no HDSI output...
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| 14:01 | Bertl_oO | sheet 2 shows the I2C bus system on the adapter board
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| 14:03 | Francky | ok these components are used for the sensor
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| 14:04 | Bertl_oO | they are on the sensor interface board for various purposes
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| 14:04 | Bertl_oO | e.g. temperature measurement, low speed GPIO, etc
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| 15:23 | cbohnens | I'm off for the day, see you tomorrow
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| 15:24 | Bertl_oO | cya!
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| 21:56 | se6astian | time for bed
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| 21:56 | se6astian | good night
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