On Wed, July 31, 2013 5:47 am, alan.b.pearce@stfc.ac.uk wrote: >> Has anyone used resistive touch screens with the ADC on a PIC, i.e. >> without using >> external chips such as the AR1000 series devices? >> >> The theory looks simple enough, I have a couple of app notes from TI >> where they >> describe how some ADC chips they make for use with touch screens work, >> and it seems >> a simple enough process. In some ways it is a wonder that the hardware >> required >> hasn't been built into a PIC already, seeing there are so many ADC >> channels >> available. >> >> My application is using a dsPic33E series chip, if that makes a >> difference. >> >> If anyone knows of example code to do this without external chips, for >> any micro for >> doing this it would be appreciated. > > OK, it looks like I might have found a basic project that might contain > suitable code to give me the basics of what I want to do. > > http://www.pyroelectro.com/2011/10/27/simple-touch-screen-interface/ > > Haven't scrutinised it closely, but there is some downloadable C code tha= t > I will try out at some point, and see what happens. > > Still appreciate any other pointers, this was about the only useful link = I > found using Google. Look at the Microchip Applications Library the Microchip Graphics Library uses resistive touch screens (most all of the Microchip demo boards are resistive). Matt Bennett Just outside of Austin, TX 30.51,-97.91 The views I express are my own, not that of my employer, a large multinational corporation that you are familiar with. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .