Hi,
I'm busy with my camera trigger tool. I use two buttons and a LCD display. At the begin i have to set the time for the trigger. I made a nice menu for that, but here's my problem.
I want to use the same button for set the time one by one (so 1,2,3,4 eacht time i press the button). But when i hold the button for let's say 2 seconds i want that i goes up without pressing the button each time.
Sorry for my bad english......
Can anybody help me?
Thanks,
Marcel
You need to make a 'state transition diagram' - basically draw a circle for each 'state' and arrows between for the transistions (here these will be button-down, button-up and certain amounts of time passing). Actions taken you label on the arrows.
This then 'translates' to code in a fairly straightforward manner (if in state A and event B happens, do action C and move to state D...)
Give the states meaningful names like 'not pressed', 'button just pressed', 'button held down'... Make sense?
Hi Mark,
thanks for the tip! Is there software to do that?
Maybee MS Visio??
Gr.
Marcel
Visio, powerpoint, pen and a napkin and a scanner ...
I suggest my phi_buttons class library to handle buttons. It has repeat function built in so if you hold the button then the button fires automatically. It also has a dash function built in so if you hold the button for a long time, it fires more rapidly. There are also auto buttons that are pressed automatically at fixed interval if you should need that.
My phi_prompt library should be able to handle any menus and inputs.