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Altera_Forum
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20 years ago

FIFOed Avalon Uart

I have posted the FIFOed avalon UART in the Hardware Projects area. It is the standard UART that comes with Nios but it has additional features such as FIFOs and hardware CTS fifoed avalon uar...
Altera_Forum's avatar
Altera_Forum
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19 years ago

Another bug found, the parity bit is inverted.

IzI

correction:

there was no parity problem, i was programming the wrong file.

uCLinux:

I tested the Fifoed uart under uCLinux and if seems to work OK. With the original Altera Uart we had a lot of UART buffer overruns, just by pressing the up arrow in the console, there was no way of pasting text into the console:

ttyS0: 1 input overrun(s)

We currently use FIFOs of length 512 which still consumes the same amount of M4K blocks (4) as FIFOs of length 16.

IzI