Nios II code only working in debug mode.

Hi @BoonBengT_Altera ,

Thanks for the reply!

I'm using Quartus Prime Pro 21.2 with Stratix 10 device.

I re-packed the project file deleting irrelevant files. Please find it in the attachment.

I'm pretty sure the .sof file is successfully programmed to the hardware.

Another thing that I have found recently is that if I downloaded the .elf code multiple times, e.g. type command "nios2-download -g xxxx.elf" in terminal multiple times,

occasionally the downloaded code can work while most of the time it does not work. No timing error was reported in the compilation report, so I'm not sure how this nondeterministic behavior happens.

Thank you.

Yu