halui analog jog (ref interfacing a shuttleXpress)

Thanks John, I did see that. Unfortunately, it isn't the same. It's practically the same device, its from the same manufacturer, it's just smaller and has fewer buttons. The problem is that the Product ID is different. I imagine someone could modify the shuttlexpress.c file and then re-compile the kernel. But that is well outside of my knowledge and skill set.

My problem lies in the fact that I barely understand how to set pins in hal. Now I need to figure out how to do it with different data types, and in different hal files. I am really confused on what to do with the wheel and dial. I have a different thread on this already, but then I found this one. And it looks like George has figured out what I want to do. I just don't have a clue how to link the wheel and analog jog. And I get kinda frustrated bouncing back and forth between manuals, wiki, forum threads, etc.

You are right, I read that. I mis-spoke.

As to being the leader of the pack... It won't be me any time soon, especially in Linux. It's both frustrating and even embarrassing how little I know in Linux.

How hard would it be to edit the shuttlexpress.c file and re-compile Linunxcnc? I am still too much of a newbie in Linux to attempt it on my own. I am relatively sure that the only difference between the Shuttle xpress and the Shuttle Pro are the product ID, and the additional buttons, shuttle xpress has 5 and shuttle pro has 13. Other than that, they have the same spring wheel and center dial.

Actually, taking it one step farther, the same applies for the shuttle pro2, except it has 15 buttons.

I looked at the shuttle press.c file. There are some parts I don't understand. Could it be as simple as copying and adding the structures for the buttons, making entries for 15 buttons, and editing the Product_ID/Vendor_ID to work with any one of three or more combinations???? That way if you have shuttle xpress you only link the first five buttons, if you have shuttle pro you link only the first thirteen buttons, and if you have the shuttle pro2 you link all buttons.

Can you explain what the packet numbers here are:
*s->hal->button_0 = packet[3] & 0x10;
*s->hal->button_0_not = !*s->hal->button_0;
*s->hal->button_1 = packet[3] & 0x20;
*s->hal->button_1_not = !*s->hal->button_1;
*s->hal->button_2 = packet[3] & 0x40;
*s->hal->button_2_not = !*s->hal->button_2;
*s->hal->button_3 = packet[3] & 0x80;
*s->hal->button_3_not = !*s->hal->button_3;
*s->hal->button_4 = packet[4] & 0x01;
*s->hal->button_4_not = !*s->hal->button_4;

And what are the 0x10 numbers?