Added button handler, program selects

include/btn.h

@@ -0,0 +1,25 @@
+#ifndef __INC_BTN_H
+#define __INC_BTN_H
+
+
+#include <stdint.h>
+
+
+#define SR_CLK			0
+#define SR_DAT			1
+#define SR_LAT			16
+
+#define BTN_STICK_UP	(1 << 14)
+#define BTN_STICK_DN	(1 << 11)
+#define BTN_STICK_LF	(1 << 12)
+#define BTN_STICK_RT	(1 << 15)
+#define BTN_STICK_SEL	(1 << 13)
+
+#define BTN_READ0		17
+#define BTN_READ1		18
+
+
+uint16_t btn_read();
+
+
+#endif