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Vincent_F's avatar
Vincent_F
Icon for New Contributor rankNew Contributor
1 year ago

UART gets stuck when enabling IRQ (NIOS II)

Hi, I'm reopening an old post from 2013 that apparently never got a reply. I'm facing the same problem. I have a small NIOS II system (used as a demo for my students) that features a jTAG UART an...
Nios Cpu
tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
1 year ago

Hi Vincent


Could you try not accessing the tx register directly?

Try using the fwrite function like the example here?

https://www.intel.com/content/www/us/en/docs/programmable/683130/24-1/hal-system-library-support-37443.html

For the fprint, you should not use that as it is used to print to the jtag uart.


Yes you are right, by default it is fast implementation instead of small. The only difference between them is fast support interrupt and small do not.


Regards

Jingyang, Teh