initial commit!

libs/libgccvb/timer.h

@@ -0,0 +1,34 @@
+#ifndef _LIBGCCVB_TIMER_H_
+#define _LIBGCCVB_TIMER_H_
+
+
+#include "types.h"
+#include "hw.h"
+
+
+//use with 20us timer (range = 0 to 1300)
+#define TIME_US(n)		(((n)/20)-1)
+
+//use with 100us timer (range = 0 to 6500, and 0 to 6.5)
+#define TIME_MS(n)		(((n)*10)-1)
+#define TIME_SEC(n)		(((n)*10000)-1)
+
+
+#define TIMER_ENB		0x01
+#define TIMER_ZSTAT		0x02
+#define TIMER_ZCLR		0x04
+#define TIMER_INT		0x08
+#define TIMER_20US		0x10
+#define TIMER_100US		0x00
+
+
+void timer_enable(int enb);
+u16 timer_get();
+void timer_set(u16 time);
+void timer_freq(int freq);
+void timer_int(int enb);
+int timer_getstat();
+void timer_clearstat();
+
+
+#endif