Interrupt for SPI and D5 « LeafLabs Garden

Interrupt for SPI and D5

(3 posts) (2 voices)

mh555
Member

Hi!

An interrupt on D5 (attachInterrupt(D5, ...)) works fine, but when there is an active SPI interrupt (spi_irq_enable(SPI1, SPI_TXE_INTERRUPT);) it stops firing. The SPI interrupt works as expected. Is this a hardware related issue? Or some libmaple bug? Or my mistake?

Posted 3 years ago #
mh555
Member

PS. This is restricted to D5. D15 works well even with the SPI interrupt active.

Posted 3 years ago #
crenn
Moderator

You'll need to write an interrupt function for it to work. The reference manual will come in handy but the handler you need is:

.extern "C" { . void __irq_spi1(void) { . // Insert code here . } .}

Posted 2 years ago #

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