Forum Discussion

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

RS-422 to RS-232 Conversion

Hello Friends, I am trying to convert RS-422 data (arrive at 1 mbps) from remote machine in to a RS-232 format. remote machine/system send RS-422 data (CLK+, CLK-, DATA+ and DATA-) toward ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

If your data is arriving at 1Mbit/sec and your nios is running at 100MHz and you have 800 clocks/byte (1000 if async data with start/stop bits).

That doesn't make it impossible - but you definitely don't want any other interrupts in your system.

I can't see where your code 'spins' waiting for data.

You might need to get a trace centered on the duplicate value (maybe trigger from a write from the copy-loop).