Included ARM LPC21xx related code from uLan project. The snapshot date is 2008-07-05

[lincan.git] / embedded / arch / generic / defines / lt_timer.h

diff --git a/embedded/arch/generic/defines/lt_timer.h b/embedded/arch/generic/defines/lt_timer.h
new file mode 100644 (file)
index 0000000..772cf13
--- /dev/null
+++ b/embedded/arch/generic/defines/lt_timer.h
@@ -0,0 +1,64 @@
+#ifndef _LT_TIMER_H
+#define _LT_TIMER_H
+
+#include <types.h>
+#include <system_def.h>
+#include <cpu_def.h>
+#include <lt_timer_types.h>
+
+//timers
+
+#ifndef LT_TIMER_VAR_LOC
+#define LT_TIMER_VAR_LOC
+#endif
+
+static lt_ticks_t LT_TIMER_VAR_LOC last_ticks;
+static lt_mstime_t LT_TIMER_VAR_LOC actual_msec; 
+
+/* Declaration of ulan light timers */
+
+#define lt_get_msbase()     (1000/SYS_TIMER_HZ)                /* in ms */
+#define lt_get_ticks()      (get_sys_timer_ticks())
+
+static inline void
+lt_mstime_update()
+{
+  lt_ticks_t LT_TIMER_VAR_LOC act_ticks;
+  lt_mstime_t LT_TIMER_VAR_LOC msec_diff;
+
+  act_ticks=lt_get_ticks();
+  msec_diff=((lt_tidiff_t)(act_ticks-last_ticks))*lt_get_msbase();
+  last_ticks=act_ticks;
+
+  actual_msec+=msec_diff;
+}
+
+
+#define LT_TIMER_DEC(cust_prefix) \
+\
+extern lt_mstime_t LT_TIMER_VAR_LOC cust_prefix##_last_expired; \
+static inline void \
+cust_prefix##_init() \
+{\
+  lt_mstime_update();\
+  cust_prefix##_last_expired=actual_msec;\
+}\
+static inline int \
+cust_prefix##_expired(lt_mstime_t expiration) \
+{\
+  lt_mstime_update();\
+  \
+  if ((lt_msdiff_t)(actual_msec-cust_prefix##_last_expired)>=expiration) {\
+    cust_prefix##_last_expired=actual_msec;\
+    return 1;\
+  }\
+  \
+  return 0;\
+}
+
+#define LT_TIMER_IMP(cust_prefix) \
+\
+lt_mstime_t LT_TIMER_VAR_LOC cust_prefix##_last_expired; \
+
+
+#endif /* _LT_TIMER_H */