diff options
Diffstat (limited to 'examples/spiblink/master.c')
-rw-r--r-- | examples/spiblink/master.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/examples/spiblink/master.c b/examples/spiblink/master.c new file mode 100644 index 0000000..267d7b2 --- /dev/null +++ b/examples/spiblink/master.c @@ -0,0 +1,20 @@ +#include <avr/io.h> +#include <util/delay.h> +#include "../../spi.h" + +int main() { + DDRB |= _BV(DDB1) | _BV(DDB2); + PORTC |= _BV(PORTC1); + spi_init(SPI_MODE_MASTER); + SREG |= _BV(7); + while (1) { + if (PINC & _BV(PINC1)) { + PORTB &= ~_BV(PORTB1); + } else { + PORTB |= _BV(PORTB1); + } + PORTB &= ~_BV(PORTB2); + spi_send(!(PINC & _BV(PINC1))); + PORTB |= _BV(PORTB2); + } +} |