[Elphel-support] change camera parameters through Telnet

[Biel Bestué de Luna]

so there are three stages or three levels of information: Sensor, FPGA, and
software isn't it?

let's say I don't care that much on the software that runs on the camera,
is it possible to control both FPGA and sensor with a single set of tools
via de command line? or maybe run a process that keep control of both
sensor and FPGA asynchronously.

when I call the pixel binning summing process with this "fpcf -i2cw16 4820
0x60" i'm calling the FPGA isn't it? where "0x60" is a value and I guess
"4820" is a process (in this case "pixel binning summing") in the fpga, and
I guess "-i2cw16" is the sensor?


2012/12/13 support-list <support-list at support.elphel.com>

> **
> Hello Biel,
>
> By "through telnet" you mean "from the command line"?
>
> The simplest way is to use wget, like we do in init scripts, here is an
> example:
>  wget "http://localhost/i2c.php?bus=1&raw=0x2000&data=0x7f" -O /dev/null
> >/dev/null 2>&1
>
> You see - changing parameters otherwise is tricky - there are no "current
> parameters" in the camera because of the pipeline operation. For example,
> if you change the sensor resolution,  then sensor, FPGA and the software
> work with different values - sensor is sent new values first, FPGA uses
> "old values" until the sensor is expected to provide frame with new
> width/height, and software in the camera creates the new JPEG header when
> the compressed data is being sent out or recorded. It is all realtime and
> relies on tight cooperation between camera parts, even with relatively slow
> processor - it uses both FPGA and software code to implement this, and PHP
> extension has support for these features.
>
> BTW, do you know that there is the method to do opposite to what you asked
> for - issue command line parameters through the URL in the browser?
> Like reboot the camera
> http://192.168.0.9/phpshell.php?command=reboot+-f
> or reflash it (provided the current parameters are in the
> /etc/reflash.conf):
> http://192.168.0.9/phpshell.php?command=reflash
>
> Andrey
>
>
> ---- On Thu, 13 Dec 2012 07:23:07 -0800 *Biel Bestué de Luna<
> 7318.tk at gmail.com>* wrote ----
>
> is there a way to change the camera parameters and their values through
> Telnet without using the php? just like you change the type of pixel
> binning the camera use with a Telnet command, how could I change the EXPOS
> value with Telnet without the need of php or wget?
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>
>
>
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