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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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14 years ago

Hi all,

I didn't exactly found which is the problem and moreover I don't know if it is only due to the high speed I'm using (460800 baud); what I deduced and supposed is that the problem is not the Avalon FIFOed UART (neither 16550 Opencore Uart) component but is how Nios handle interrupt in not edge level sensitive manner (clearly using Internal Interrupt Controller).

Anyway if somebody is interested I found some tricky to use within interrupt service routine that solved the problem. Feel free to contact me if somebody is interested. :)

Ciao,

Paolo