> Has anyone used resistive touch screens with the ADC on a PIC, i.e. witho=
ut using
> external chips such as the AR1000 series devices?
>=20
> The theory looks simple enough, I have a couple of app notes from TI wher=
e they
> describe how some ADC chips they make for use with touch screens work, an=
d it seems
> a simple enough process. In some ways it is a wonder that the hardware re=
quired
> hasn't been built into a PIC already, seeing there are so many ADC channe=
ls
> available.
>=20
> My application is using a dsPic33E series chip, if that makes a differenc=
e.
>=20
> If anyone knows of example code to do this without external chips, for an=
y micro for
> doing this it would be appreciated.

OK, it looks like I might have found a basic project that might contain sui=
table 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 that =
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.=20
--=20
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