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Altera_Forum
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20 years ago

Nios-II SOPC UART delivers wrong bytes

We use the UART in our Nios-II design that comes with Quartus 5.0SP1 and Nios-II 5.0 We face the problem that sometimes the Uart reports wrong RX Bytes from correct RX streams. The serial str...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Today i "Signaltaped" this problem and indeed the uart delivers wrong data.

Currently i have no clue why as i do not have the source.

So the problem is not OS related. The Nios get data on the signal "readdata" if accessed register 0 that are definitly not transmitted.

tommorow i will put a self made uart inside my project to nail down thesource ...

regards