Touchscreen code examples

Don M

Other than Rayman's PSB Paint code does anyone have any examples or tutorials on implementing touchscreen activity? Maybe a simple example of how to make (draw) a button and make that button active when touched.

I looked through his code and there is quite a bit of it. It's hard for me to understand what parts are for actually drawing a button on the screen, which part actually interacts with the touchscreen and how to define the touch parameters. Seems like this subject would make a good tutorial.

I am going to start by "tearing apart" Rayman's PSB Paint code to try and understand for myself which parts do what.

Any help or guidance appreciated.

Thanks.
Don

HShanko

I can't give an answer. But I have gone through Rayman's code before. Run his example (PDB Paint) if you have the hardware to display it. Look at what is displayed. Look through the code for the text, buttons, etc that is displayed. Do Find to locate where it is called? Yes, a bit of work; and a learning curve. Worth it. But don't think it is nicely documented as a 'how to do graphics'.

Below is what I was able to code using Rayman's 3.5" LCD and pcb and lots of 'sweat' poring over his demos. Draw borders, scale, display buttons to select, inc/dec values, touch-place vertical cursor markers and extract time between cursors, to name some.

MVC-073S.JPG

Cluso99

See this thread - it is just the touchscreen section, not the LCD part. http://forums.parallax.com/showthread.php?132150-4-or-5-wire-Touch-Screen-driver-using-a-propeller-instead-of-a-specialised-IC