Put timer driver on diet.

[bertos.git] / drv / timer.c

diff --git a/drv/timer.c b/drv/timer.c
index a941f355db4b968b3dabc9d3741238b8711c108d..0621336856fb561587d4d7ea00a68ae2f4be7ad0 100755 (executable)
--- a/drv/timer.c
+++ b/drv/timer.c
@@ -15,6 +15,12 @@
 
 /*
  * $Log$
+ * Revision 1.9  2004/07/21 00:15:13  bernie
+ * Put timer driver on diet.
+ *
+ * Revision 1.8  2004/07/18 21:57:07  bernie
+ * Fix preprocessor warning with potentially undefined symbol.
+ *
  * Revision 1.6  2004/06/07 18:10:06  aleph
  * Remove free pool of timers; use user-provided Timer structure instead
  *
@@ -43,7 +49,7 @@
        #include <kern/proc.h>
 #endif
 
-#if (ARCH & ARCH_EMUL)
+#if defined(ARCH_EMUL) && (ARCH & ARCH_EMUL)
        #error To be recoded
 #elif defined(__AVR__)
        #include "timer_avr.h"
@@ -59,7 +65,13 @@
 //! Master system clock (1ms accuracy)
 volatile time_t _clock;
 
-REGISTER static List timers_queue;      /*!< Active timers */
+
+#ifndef CONFIG_TIMER_DISABLE_EVENTS
+
+/*!
+ * List of active asynchronous timers.
+ */
+REGISTER static List timers_queue;
 
 
 /*!
@@ -113,6 +125,8 @@ Timer *timer_abort(Timer *timer)
        return timer;
 }
 
+#endif /* CONFIG_TIMER_DISABLE_EVENTS */
+
 
 /*!
  * Wait for the specified amount of time (expressed in ms)
@@ -139,6 +153,7 @@ void timer_delay(time_t time)
 }
 
 
+#ifndef CONFIG_TIMER_DISABLE_UDELAY
 /*!
  * Wait for the specified amount of time (expressed in microseconds)
  *
@@ -163,6 +178,7 @@ void timer_udelay(utime_t usec_delay)
        while (timer_hw_hpread() - start < delay)
        {}
 }
+#endif /* CONFIG_TIMER_DISABLE_UDELAY */
 
 
 /*!
@@ -171,14 +187,18 @@ void timer_udelay(utime_t usec_delay)
  */
 DEFINE_TIMER_ISR
 {
-       /* With the Metrowerks compiler, the only way to force the compiler generate
-          an interrupt service routine is to put a pragma directive within the function
-          body. */
+       /*
+        * With the Metrowerks compiler, the only way to force the compiler generate
+        * an interrupt service routine is to put a pragma directive within the function
+        * body.
+        */
        #ifdef __MWERKS__
        #pragma interrupt saveall
        #endif
 
+#ifndef CONFIG_TIMER_DISABLE_EVENTS
        Timer *timer;
+#endif
 
        TIMER_STROBE_ON;
 
@@ -187,6 +207,7 @@ DEFINE_TIMER_ISR
        /* Update the master ms counter */
        ++_clock;
 
+#ifndef CONFIG_TIMER_DISABLE_EVENTS
        /*
         * Check the first timer request in the list and process
         * it when it has expired. Repeat this check until the
@@ -206,6 +227,7 @@ DEFINE_TIMER_ISR
                /* Execute the associated event */
                event_doIntr(&timer->expire);
        }
+#endif /* CONFIG_TIMER_DISABLE_EVENTS */
 
        TIMER_STROBE_OFF;
 }
@@ -218,7 +240,9 @@ void timer_init(void)
 {
        TIMER_STROBE_INIT;
 
+#ifndef CONFIG_TIMER_DISABLE_EVENTS
        INITLIST(&timers_queue);
+#endif
 
        _clock = 0;