[Elphel-support] Python on 393

[Shashank Mutha]

Hello Oleg,
          Thank you very much for sharing your expertise and giving a
detailed answer. I was hoping to get this info but was doubtful if I would.
I will study further based on your inputs and come back with more questions.
Regards,
Shashank.

On Wed, Mar 29, 2017 at 12:23 AM, Oleg <support-list at support.elphel.com>
wrote:

> Hello Shashank,
>
> *We have recently moved git repositories to our own server -
> https://git.elphel.com <https://git.elphel.com>*
>
> Assuming you have followed our setup instuctions
> <https://wiki.elphel.com/wiki/Poky_2.0_manual#Setup> - *project path*
> will be related to the top project's root.
>
> Python scripts:
> 1. *init_elphel393.py*
> *10393 path*:* /etc/elphel393/*
> *Project path*: *elphel393/rootfs-elphel/elphel-init*
> *Description*:
> * run at boot by /etc/init.d/init_elphel393 with a few parameters defined
> in poky's local.conf
> * sets the ip address and netmask
> * initializes:
> ** temperature monitor: tempmon.py
> ** programs USB hub on 10389 (if there is one)
> ** starts image server (imgsrv, c app) for all detected ports
> ** starts autoexposure daemon (autoexposure, c app)
> ** default camera parameters - autocampars.php (results are stored in
> /etc/elphel393/autocampars[port#].xml)
> ** enables SATA switch multiplexing (x393sata.py(init) &
> x393sata_control.py(mux)) and loads SATA driver
>
> 1a. *tempmon.py*
> *10393 path*:* /usr/bin/*
> *Project path*: *elphel393/rootfs-elphel/elphel-apps-tempmon/*
> *Description*: temperature monitor
>
> 1b. python scripts related to SATA (and SATA module in fpga):
> *10393 path*: */usr/local/bin/*
> *Project path*: *elphel393/fpga-elphel/x393_sata/py393sata/*
> *Description*: there are a few scripts, the major one is x393sata.py -
> there are examples of usage in the end of the script.
>
> 2. Python scripts related to x393 fpga
> *10393 path*:  */usr/local/bin/*
> *Project path*: *elphel393/fpga-elphel/x393/py393/*
> *Description*:
> * fpga: memory controller, rtc, gpio, compressor, AXI
> * Most of them are not used - but can be used for testing, some have
> examples inside.
>
>
> Don't know if you need it or already figured it out, the whole project
> sources structure in short:
>
> https://git.elphel.com/Elphel/elphel393/tree/master:
>
> 1. *setup.py*:
> * clones all the projects
> * rerun to update all repositories - then rebuild with bitbake
> * creates a working copy of projects-default.json - projects.json
>
> 2.* check_versions.py*:
> * ./check_versions.py root at 192.168.0.9)
> * compares software versions on the 10393 vs current sources
>
> 3. *elphel393/meta/meta-elphel393/* - all of the recipes for the projects.
> * rootfs recipe with the list of included packages:
> *elphel393/meta/meta-elphel393/recipes-core/images/core-image-elphel393.bb
> <http://core-image-elphel393.bb>*
>
> All of the python packages are listed there.
>
> 4. Projects:
> The paths in the recipes point to the project sources which are cloned
> outside of poky structure - so "bitbake ... -c clean" does not remove the
> sources (we tried Quilt but it's not convenient). And so all the source
> repositories are in:
> ** elphel393/linux-elphel/ - *which is a kernel tree with our sources
> only - it is merged with the full kernel tree.
> * *elphel393/rootfs-elphel/ - *user applicatons projects and init
> scripts, matching resipes are found in *meta/meta-elphel393/recipes-core/*
> * *elphel393/fpga-elphel/ - *fpga projects, matching recipes are in
> *meta/meta-elphel393/recipes-core/*
>
> Some of the recipes for applications do not have sources in
> *elphel393/rootfs-elphel/*
>
> 5. The boot images are linked to the top directory:
> * *elphel393/bootable-images/mmc/  *(see https://wiki.elphel.com/wiki/
> Sd_boot_rootfs)
> * *elphel393/bootable-images/nand/  *(see https://wiki.elphel.com/wiki/
> NAND_flash_boot_rootfs)
>
> 6. Have a look at the elphel393/poky/build/local.conf
> * The default ip address of the rootfs can be set there.
>
> Tips for development:
> * Better to boot from a micro SD card (recovery or regular, see boot
> options <https://wiki.elphel.com/wiki/Boot_options_393>)
> * Most of the projects (even the kernel and fpga) are configured for
> Eclipse IDE
> ** If you build a project it will compile it and copy the binaries (or
> installed scripts) to the target hardware - the ip address is set in poky's
> local.conf, but the requirement is exporting your key:
> ssh-copy-id root at 192.168.0.9
> If you prefer to build from the command line then "bitbake ... -c
> target_scp" which does binaries/scripts copying
>
> Let us know if you have further questions or need more details.
>
> Best regards,
> Oleg Dzhimiev
> Electronics Engineer
> phone: +1 801 783 5555 x124
> Elphel, Inc.
>
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