diff options
Diffstat (limited to 'examples/spiblink/slave.c')
-rw-r--r-- | examples/spiblink/slave.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/examples/spiblink/slave.c b/examples/spiblink/slave.c new file mode 100644 index 0000000..cf14408 --- /dev/null +++ b/examples/spiblink/slave.c @@ -0,0 +1,21 @@ +#include <avr/io.h> +#include <util/delay.h> +#include "../../spi.h" + +void receive(uint8_t data); + +int main() { + DDRB |= _BV(DDB1); + spi_receive = receive; + spi_init(SPI_MODE_SLAVE); + SREG |= _BV(7); + while (1) { + } +} + +void receive(uint8_t data) { + if (data) + PORTB |= _BV(PORTB1); + else + PORTB &= ~_BV(PORTB1); +} |