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Altera_Forum
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21 years ago

Nios II, nonblocking i/o, anyone

Does anyone know how to implement a nonblocking input function on the jtag uart on NiosII ? On Nios I used nr_rxchar(), which returns even if there is no character waiting. The suggested r...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Should be able to read/write directly, but without the functionality that altera threw in, how would you know when your data has gone across?

Find the HAL register for the input and use it. But you're going to need some way of detecting whether you're input is valid or not.

I guess you can check the recieve reg (I haven't looked at it so I have no idea if there is one or not), and pad you're data if it's not valid to something like -1 just like the RS232 did.

Goodluck