Forum Discussion

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

nios on fpga not responding proper

Hi, I have built nios on fpga.Nios design includes clock source,nios,jtag,on-hip memory,PIO-connected to led.Then I did counter c program on eclipse.GETs 00-ff output on console window but led not...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

how are you writing to the PIO?

it should be something like this:

while(1)

{

IOWR_ALTERA_AVALON_PIO_DATA(PIO_0_BASE, count&0xFF); //write a value to show Nios is alive

count++;

delayOneSecond();

}

you can check that you are writing to the correct address by running in debug mode and manually edit the memory location and see if the LEDs change.