1 files changed, 37 insertions, 0 deletions

diff --git a/src/inc/spi/spi.h b/src/inc/spi/spi.h
new file mode 100755
index 0000000..bb92cac
--- /dev/null
+++ b/src/inc/spi/spi.h
@@ -0,0 +1,37 @@
+#ifndef SPI_H
+#define SPI_H
+
+  #include <avr/io.h>
+  #include <util/delay.h>
+  #include "../uart/uart.h"
+  #include "../stdout.h"
+
+  #define SPICLK_DEFAULT  SPICLK_64
+  #define SPICLK_FAST     SPICLK_X2
+
+  #define PORT_SPI        PORTB
+  #define DDR_SPI         DDRB
+  #define DD_SS           DDB4
+  #define DD_MOSI         DDB5
+  #define DD_MISO         DDB6
+  #define DD_SCK          DDB7
+
+  typedef enum
+  {
+    SPICLK_4,   // vv nominal clk-speeds
+    SPICLK_16,
+    SPICLK_64,
+    SPICLK_128,
+    SPICLK_X2,   // vv with SPI2x
+    SPICLK_X32,
+    SPICLK_X64
+  } SPICLK;
+
+
+  void spi_init();
+  void spi_putc(unsigned char c);
+  unsigned char spi_getc();
+  void spi_setspeed(SPICLK speed);
+
+
+#endif