Qt embedded - gpio event

Hello,

I am using the AVR32 evaluationboard NGW100 with the peripheral board RMT1 and a LCD with touchscreen. On the NGW runs a Ot 4.5.1 application. Alternatively to the touch i want to use pushbuttons to communicate with my program. The buttons are connected to the NGW GPIOs.
As far as I know I have to create a custom Qt event. This event have to occur if the GPIO status is changed. How I can create such a custom event?

Thanking you in anticipation

Steffen

Hi,
Your OS (operating system) .i.e Linux, needs to communicate that event to the qtapplication. I am not sure of the details of your kit. Is that event being sent to the Qt application?

Hi,

thanks for your reply!
No the gpio event isn't being sent to my qt application and have no idea how to do this.
Btw. on my microcontroller (NGW100) runs a linux OS and im reading the ports by using the /dev-based GPIO framework.

OK, you can read the ports via /dev. In your QT application make a thread that monitors the port status (reads from /dev/..), then you can use signals/slots or QEvent to send that signal to your object.
this is just an example. Read up on signals/slots.

connect(SENDINGOBJECT, SIGNAL(portstatus(val)),RECOBJECT,SLOT(recportstat us(val)));

When the port is activated make a signal .. emit portstatus(val), then in your receiver object make a slot recportstatus(val).