Updated copiright notice.

[bertos.git] / drv / at91 / timer.c

diff --git a/drv/at91/timer.c b/drv/at91/timer.c
old mode 100755 (executable)
new mode 100644 (file)
index 2b396fa..a06e447
--- a/drv/at91/timer.c
+++ b/drv/at91/timer.c
@@ -1,6 +1,31 @@
 /**
  * \file
  * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
  * Copyright 2007 Develer S.r.l. (http://www.develer.com/)
  * This file is part of DevLib - See README.devlib for information.
  * -->
@@ -12,37 +37,48 @@
  * \brief Low-level timer module for Atmel AT91 (inplementation).
  */
 
-#include <drv/timer_at91.h>
-#include <cfg/macros.h> // BV()
+#include "timer.h"
+#include "at91sam7s.h"
+#include "sysirq.h"
 
+#include <cfg/macros.h> // BV()
+#include <cfg/module.h>
 #include <cfg/cpu.h>
 
 
 /** HW dependent timer initialization  */
 #if (CONFIG_TIMER == TIMER_ON_PIT)
-       #warning Very untested!
-       INLINE static void timer_hw_irq(void)
+       INLINE void timer_hw_irq(void)
        {
-               /* Reset counters, this is needed to start timer and interrupt flags */
-               volatile uint32_t dummy = PIT_PIVR;
+               /* Reset counters, this is needed to reset timer and interrupt flags */
+               uint32_t dummy = PIVR;
+               (void) dummy;
        }
 
+       INLINE bool timer_hw_triggered(void)
+       {
+               return PIT_SR & BV(PITS);
+       }
 
-       static void timer_hw_init(void)
+       INLINE void timer_hw_init(void)
        {
                cpuflags_t flags;
+
+               MOD_CHECK(sysirq);
+
                IRQ_SAVE_DISABLE(flags);
 
-               PIT_MR = CLOCK_FREQ / (16 * TIMER_TICKS_PER_SEC) - 1;
+               PIT_MR = TIMER_HW_CNT;
                /* Register system interrupt handler. */
                sysirq_setHandler(SYSIRQ_PIT, timer_handler);
 
                /* Enable interval timer and interval timer interrupts */
-               PIT_MR |= BV(PIT_PITEN);
+               PIT_MR |= BV(PITEN);
                sysirq_setEnable(SYSIRQ_PIT, true);
 
                /* Reset counters, this is needed to start timer and interrupt flags */
-               volatile uint32_t dummy = PIT_PIVR;
+               uint32_t dummy = PIVR;
+               (void) dummy;
 
                IRQ_RESTORE(flags);
        }
@@ -50,7 +86,7 @@
        INLINE hptime_t timer_hw_hpread(void)
        {
                /* In the upper part of PIT_PIIR there is unused data */
-               return PIT_PIIR & 0xfffff;
+               return PIIR & CPIV_MASK;
        }
 
 #else