Hi,
im learning how to use the AT91RM9200..right now im trying to tackle the AIC. iv set everyhting up, earmarking PIOA0 for an external interrupt through a switch connected to it, so that theoretically whenever the switch is pressed, an interrupt is generated that sends a string via the debug port to hyperterminal.
everythings fine, but when i press the switch once, i get 2 interrupts...one whenthe switch is down, the other when i release it..ive tried this in all modes, level sensitive, edge sensitive, high level, positive edge, etc, all possible ones.. i dont suppose its due to a contact bounce, since im getting symmetric interrupts like this..im using the exact libraries provided by atmel (irq_pio.s and irq.mac)..
kindly advise what could be going wrong.. Thanx in anticipation
Mayank