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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

HELP,I can't generate Hardware interrupt

I need help,please What I want is : When I press a button ON Board, Nios Let LEDs lights.Of course,the LEDs is turned off before.(The board is DIY,Just a cyclone ep1c3t144c8 without flash and s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

- better to use edge triggered interrupts in your input pio

- i don't know if you need a system timer, this normally

has IRQ0 assigned.

does your program runs normal in debugger

e.g let a led blink in while loop ?

..

..

while(1) {

usleep(100000);

led ^= 0x01;

IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE,led);

}