Re: AM-CMP driver for itifg-0.7.1 version

["M.Stein" <matthias@gom.com>]

Hello Jorge!

On Wed, 14 Feb 2001, Jorge Cabrera [iso-8859-1] Gámez wrote:

> Hi Matthias,
> 
> After some time I've got some free time to integrate the AM-COMP driver
> with version 0.7.1. There are still things to do but currently I can run the
> test_itifg program with it (that is nearly the only testing I've done so far).
> Possibly in a couple of days I'll have many more questions, but up to now
> I've got these:

Well done!

> 1. Any other docs than those written in german, distributed with version
> 0.7.1 seem to be outdated. Have you available an english translation of
> the docs in german?.

Sorry, no time to translate it till today :-(
 
> 2. Have you tested  -r option with test_itifg with other acquisition modules?.
> As far as I understand, if ,e.g. -r5, is given to test_itifg I should get a 5
> frames/sec refreshing rate. Actually, this program seems not to care about this
> parameter.

No, this is only to adjust the driver timeout value!! The camera frame
rate is a fixed value. You need the -r option only, if the 1s default
value is too short (long time exposures), or you want to detect camera
sync problems (we adjust this vaue to 1.25 * 'camera frame rate' to find
hardware problems quickly).

> 3. What has happened with the UMB option, both when loading the module or
> with the -o option in test_itifg?. This is one of the aspects that is clearly
> outdated in the english docs.

The UMB option is not needed any longer, since the driver can allocate
it's memory dynamically. In other words - the bus master mode is now the
one and only working mode, but the target of the transfer is no longer the
reserved upper memory. Instead of this, we transfer directly into
malloced user space (read) or vmalloced and mmaped kernel space (mmap).

> 4. Have you got any tests/programs other than the test programs in the distribution
> that I should try to verify that the amcmp driver is performing correctly with the
> rest of the itifg driver? Any suggestions on functionalities that should be
> checked?.

No. It should be enough, if the test program can show (and perhaps save)
images.
A frequently ask question is the support for reading config files. Do you
have time to support something dealing with this??
> 
> I apologize for asking questions that probably could be answered diving into the
> code but actually I don't have the time for doing that. Sure you understand!

No problem. I'm very happy, that someone updates the old code to the new
driver version!!

						matthias

> Best regards.
> 
> JORGE
> 
> ===========================================================
> Jorge Cabrera Gamez
> Facultad de Informatica
> Universidad de Las Palmas de Gran Canaria
> Campus Universitario de Tafira
> 35017 Las Palmas de Gran Canaria.
> SPAIN
> Tel: +34 928 458758
> Fax: +34 928 458711
> E-mail: jcabrera@dis.ulpgc.es
> ============================================================
> 
> 
> 
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