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Altera_Forum's avatar
Altera_Forum
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21 years ago

printf("") in an interrupt handler

For debugging, printf's are such a useful tool, that I would like to try to circumvent the troubles associated with its use in irq routines. it says in the Nios II Software Developer’s manu...
Altera_Forum's avatar
Altera_Forum
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21 years ago

larsen,

The UART driver will use interrupts unless you tick the reduced drivers option in the system library config page, or you define ALTERA_AVALON_UART_SMALL.

In answer to your other questions using printfs in the ISR if you have an interrupt driven UART driver is just asking for trouble so just use the polled driver as described above.