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Altera_Forum
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20 years ago

cal_uart(with fifo) + NIOSserial.c

As we know, we need uart with fifo to enchance the performance. So we got the cal_uart from Altera, which should tested by ourselves because it is not provided officially by altera. Now we use...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Hi all,

I am trying the cal_avalon_uart core, but I get some problems.

I tried to do as mountain8848 said :

change rx_char_ready to rx_not_empty at line 1933

But I still get communication problems with uClinux. I only receive chars after 64 bytes are in the FIFO (the FIFO is 64 bytes long). SO an interrupt is only generated when the fifo is completely full. The main problem is that after it worked once or twice (64 or 128 bytes received), uClinux crashes (no response on any console).

Did someone fix this ?

Thanks for help

Regards

Pierre-Olivier