I am looking for information on how to use the DSLR driver (I have a Canon 550d) to take a picture.
I am wanting to try a custom focus routine and indilib can integrate all the equipment like the camera, mount, and focus motor. But it is not clear to me how to ask the DSLR driver to take a picture.
I can see the properties through the command line indi_getprop, but it isn't clear what I would have to do to get the camera to take a picture.
You just need to set CCD_EXPOSURE number property to some number, 5 for 5 seconds. Then it would take the exposure. Now to get the BLOB file, you need to monitor the CCD1 property of the same driver. Look at the INDI examples that come with the source code.