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Altera_Forum
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15 years ago

Altera UART Flow Control

Hi all, Ive a question on uart hw flow control. When set on sopc builder RTS/CTS are added to pins, but I don't understand if RTS is driven automatically by HW or must be driven by SW.... L...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

flow control is software based...rts has to be moved by ioctls and cts change hat to be managed in the driver....altera_uart doesn't do the last...you have to enable interrupt on cts change and manage it and you must inhibit tx when cts is not set too...

RTS is set at the open (low in this case) and it is done by serial core by default for all uarts..

Carlo