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Altera_Forum
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20 years ago

UART IO

Hi: How could I open/set flags to an Altera UART device for being used in a non-blocking manner, e.g. a call to fgetc() or fread() returns inmediately if no characters are available? Thank...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Hi:

At this very moment we are still using NIOS-II with Quartus II-4.2.

When looking at the UART HAL driver source code we see that a check for the flag bit O_NONBLOCK is made, so the question is how could I set this flag on. For opening the device I use fopen(). It seems to be around a unix style open() function with parameters for mode and flags. But it didnt work for me.

Thanks,