Partial refactoring, forgot spi.h early.

[goodfet] / firmware / include / spi.h

diff --git a/firmware/include/spi.h b/firmware/include/spi.h
new file mode 100644 (file)
index 0000000..8cd488a
--- /dev/null
+++ b/firmware/include/spi.h
@@ -0,0 +1,17 @@
+/** SPI **/
+
+
+//Pins and I/O
+#define SS   BIT0
+#define MOSI BIT1
+#define MISO BIT2
+#define SCK  BIT3
+
+#define SETSS P5OUT|=SS
+#define CLRSS P5OUT&=~SS
+
+#define SETMOSI P5OUT|=MOSI
+#define CLRMOSI P5OUT&=~MOSI
+#define SETCLK P5OUT|=SCK
+#define CLRCLK P5OUT&=~SCK
+#define READMISO (P5IN&MISO?1:0)