Re: Hi guys, does any of you have experience with touchscreen controllers?

Michael Trimarchi
2010-04-26T10:41:13Z

hi fabio,

Fabio Giovagnini wrote:
> Hi Dale,
> maybe I need to be more clear about my condition.
> 1) I connected the ads7843 to general I/O ports because the SPIs available on
> sh2a7203 have been be used for other functions;
It is not a big problem, you can also bitbang on the gpio pin.

> 2) My real problem is the following: I wrote an ADS7843 device driver as a
> button driver of the input subsystem. I configured the ads7843 with INT
> enabled; so when the touch is pressed I have a burst of IRQ. The IRQ handler
> read the ads7843 and return to the input subsystem the abs values of the
> touchscreen.
I think tha rewrite the code it is not so usefull but reuse the code
using a bitbang interface
it's more simple and don't need a lot of testing

Michael Trimarchi