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Altera_Forum's avatar
Altera_Forum
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19 years ago

How can i wakeup program thread with button PIO

I found Microtronix's driver for button PIO (on Altera dev. board) altera_pio_button.c It seem to catch the IRQ from button and update value in device file. Is it possible to use this ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

You can use select().

Look at "man select". There is a example with timeout.

Or, if you don't need timeout, just a blocked read() will do.