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Altera_Forum's avatar
Altera_Forum
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12 years ago

ISR driven UART is missing characters (even at 9600bps... same prob at 230400)

Any ideas on what I'm missing here that is causing me to miss characters? I'm interfacing to a device that shoots out RS232 packets (up to 200 per second if the bps can handle itI can select t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Oh - the ISR performance 'problem' is probably all in the code that runs after the cpu takes the interrupt and before your ISR runs.

If you write your own ISR entry/exit you'll probably do a better job!