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Altera_Forum's avatar
Altera_Forum
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17 years ago

communication about niosii uart

Hi, First,I'm sorry for my poor English.I am using the nios ii uart to communicate with pc,I want to receive the data from pc in interrupt.I am using the RRDY interrupt now,the question is I c...
Altera_Forum's avatar
Altera_Forum
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17 years ago

Hi

As far as I know, fread() works by implementing exactly the kind of RRDY interrupt and FIFO buffer as I described, and it does it in software.

As well as the FIFO'd UART I mentioned, there may be a technique using a DMA component linked to the UART which could be used to generate an interrupt after a set number of characters have been received.

The NIOS forum is back up now, so I'd suggest searching there for information on the FIFO'd UART.

Cheers

Sharkybaba