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Altera_Forum's avatar
Altera_Forum
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18 years ago

help:uart error

hi, i used the uart correctly before, but when i added a function in the uart interrupt function, it can receive the data only once, receiveed another data, the program run out. why?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Fair enough. Well there's nothing intrinsically wrong with calling a function from within an ISR. The most likely problem is that you are using a HAL function call which relies on interrupts being enabled.