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Altera_Forum's avatar
Altera_Forum
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20 years ago

About a custom UART and the JTAG UART

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/huh.gif Hi all, When I try to make a custom UART work on my board(for receiving only), I set the stdin as the UART, stdo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

The JTAG UART doesn&#39;t have a baud rate, it runs as fast as necessary to transfer the data.

I think your problem is likely to be related to flow control. The standard UART doesn&#39;t have flow control enabled by default so if its buffer fills up it will lose data. There is an ioctl which you can use to turn on flow control (I can&#39;t remember exactly what, but I think it was something like tcsetattr).