Hello I saw Qtopia button application on FriendlyARM. Please you advise me how to get interrupt signal in Qtopia project, if have some project example source its might be help me. Thank you,
how to detect interrupt in Qtopia
I'm unsure about the buttons, specifically. But I can recommend several places for you to look (assuming you're talking about the buttons on the board). It's also not terribly clear to me what you're asking. Look into linux interrupt handling. You want to look for that with respect to Linux, not Qtopia. It all depends on how they're implemented at the hardware level. Additionally, it's possible that the kernel assigned the buttons their own device. This can be seen by looking through the boot log (`dmesg` or /var/log/syslog or similar - I don't know how the friendlyARM system is built yet).