Implement SPI and remove files

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);
+}