Re: [gphoto-devel] Coolpix 4300 Bulb Control?

[Marcus M. <mei...@su...>]

On Tue, Sep 20, 2011 at 05:58:35PM -0500, Darethehair wrote:
> Another very good document:
> 
> f4hla.free.fr/informatique/CoolpixProtocol.pdf
> 
> After some playing with Python, one of my Coolpix 4300 cameras, and an 
> MC-EU1 serial cable, I have figured out (in my bumbling way) how to:
> 
> - take 'bulb' exposures
> - erase images
> - download images to my Linux PC
> - read a few information registers
> 
> Flaky protocol?  You bet.  Very slow image downloads?  For sure.  Fairly 
> easy to implement?  It seems so.
> 
> Ideally, one of those DIY 'combo' serial/USB cables would be the way to 
> go -- I suppose it would allow one to have the full 'bulb exposure' 
> control of the serial protocol, and the much faster I/O of the USB 
> protocol.  However, I am *not* going to cut up my (expensive) serial 
> cable to do this :)
> 
> I think I saw references to the MC-EU1 protocol in the gphoto2 source 
> code (?).  Makes me wonder if any of the code lives in there already 
> somewhere (?).

In libgphoto2/camlibs/sierra/ is MC-EU1-Protocol.txt

It seems very vaguely related to the sierra protocol itself, but I think
we do not implement it.

Ciao, Marcus