src/spi.c


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#include <spi.h>

#ifdef CONFIG_SPI

volatile int8_t _spi_busy;

void (*spi_receive) (uint8_t data) = 0;

ISR(SPI_STC_vect, ISR_BLOCK) {
	_spi_busy = 0;
	if (spi_receive != 0) {
		spi_receive(SPDR);
	}
}

#endif /* CONFIG_SPI */