add devterm_keyboard_mini init code

Code/devterm_keyboard_mini/trackball.h

@@ -0,0 +1,25 @@
+#ifndef TRACKBALL_H
+#define TRACKBALL_H
+
+#include "devterm.h"
+
+#include "keys_io_map.h"
+
+/*
+#define BOUNCE_INTERVAL       30 
+#define BASE_MOVE_PIXELS      5  
+#define EXPONENTIAL_BOUND     15
+#define EXPONENTIAL_BASE      1.2
+*/
+
+#define RIGHT_PIN             HO3
+#define LEFT_PIN              HO1
+#define DOWN_PIN              HO4
+#define UP_PIN                HO2
+
+
+void trackball_init(DEVTERM*);
+void trackball_task(DEVTERM*);
+
+
+#endif