Forum Discussion

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

Nios stops responding to interrupts

Using Nios(3.2), Nios32@30mhz with some user logic modules in the C4. The simplest possible ISR will works a random number of times (< 30) and then stop working. The IRQ signal from the user logic is...
Int3lSystemsLearning's avatar
Int3lSystemsLearning
Icon for New Contributor rankNew Contributor
2 years ago

I'm also encountering this issue and don't know where to continue. Been working with Nios II economy over the summer to advance my FPGA SoC skills for University, but am stumped by this bug.

The biggest issue is that the system refuses to lock up in debug mode or while connected to console, so I feel like I'm solving this blind.

Around 30s the system seems to lock.

After 30s it will lock instantly if I disconnect the debugger or console.

Is this intentional from Intel?(I don't have a license beyond installing Quartus 18.1 lite and using Nios ii economy)

Being only available while connected to the console is fine for learning.

Any information would help.

***********This is not a graded assignment or for production*************

amarkh's avatar
amarkh
Icon for New Contributor rankNew Contributor
2 years ago

Did you ever find the solution to this problem? I have a very similar problem where the irq works fine in console after running as hardware but runs into problems when I stop or if I flash the .elf with the .sof