On Fri, May 7, 2010 at 4:09 PM, Peter Rakhunov <[email protected]>wrote:
> Hello Andrey, > > It seems that having it always take a picture is not a requirement , > but I've been looking through the elphel website and I can't really > find the documentation on the following steps. > > So basically when it takes a picture we just want it to flash. > > If I understand correctly if I set TRIG to 0x4 in parsedit.php it will > be in trigger mode. > > I couldn't find much documentation on this part is how do I trigger > the camera internally? We can always make a circuit that we control > that will trigger the external trigger but we would prefer to do this > over the network because it will simplify what we are trying to > accomplish. > > Again if I'm understanding this correctly if we can get it to trigger > internally and if I set TRIG_OUT to 0x800000 I think it will make it > send out a pulse on GPIO[11], which will be connected to a circuit > that will set off the flash. > > Now I think TRIG_CONDITION should be left at 0 because the mouse over > says 0 is internal but again I couldn't find any documentation on how > to trigger this internally. > > If you can help with that, that would be great! > > Thank You, > > Peter Rakhunov > > > Peter, > > Yes, you can do it that way with the settings as you wrote. Here is my > previous post on how to set camera into internal trigger mode: > http://www.mail-archive.com/[email protected]/msg00005.html > Does it work for you? > > Using the camera in that way (w/o FPGA modification) is possible, just the > maximal frame rate will be 1/2 of what the sensor can do, because you still > need exposure time >= frame readout time, and readout may start only afte > the full frame is exposed (and at thet time you need to fire flash). > > Another note - if you run camera full frame in JPEG or JP46 (not JP4) mode, > FPGA will be slightly slower than the sensor. In free running mode drive > takes care of that by adding vertical blankig when needed (limiting full > frame FPS to about 10.5 fps). In triggered mode there is no such check, so > you have to take care of the frame rate (not a problem in the flash mode, of > course). > > Andrey > > >
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