Add RTT register definitions

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2477 42af7a65-404d-4744-a932-0658087f49c3
2010-01-01 15:57:53 +00:00 · 2010-01-01 15:57:53 +00:00 · a49ee3f6cc
commit a49ee3f6cc
parent 7cdda0c614
1 changed files with 89 additions and 0 deletions
--- a/arch/arm/src/sam3u/sam3u_rtt.h
+++ b/arch/arm/src/sam3u/sam3u_rtt.h
@ -0,0 +1,89 @@
+/****************************************************************************************
+ * arch/arm/src/sam3u/sam3u_rtt.h
+ *
+ *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_SAM3U_SAM3U_RTT_H
+#define __ARCH_ARM_SRC_SAM3U_SAM3U_RTT_H
+
+/****************************************************************************************
+ * Included Files
+ ****************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include "chip.h"
+#include "sam3u_memorymap.h"
+
+/****************************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************************/
+
+/* RTT register offsets *****************************************************************/
+
+#define SAM3U_RTT_MR_OFFSET    0x00 /* Mode Register */
+#define SAM3U_RTT_AR_OFFSET    0x04 /* Alarm Register */
+#define SAM3U_RTT_VR_OFFSET    0x08 /* Value Register */
+#define SAM3U_RTT_SR_OFFSET    0x0c /* Status Register */
+
+/* RTT register adresses ***************************************************************/
+
+#define SAM3U_RTT_MR           (SAM3U_RTT_BASE+SAM3U_RTT_MR_OFFSET)
+#define SAM3U_RTT_AR           (SAM3U_RTT_BASE+SAM3U_RTT_AR_OFFSET)
+#define SAM3U_RTT_VR           (SAM3U_RTT_BASE+SAM3U_RTT_VR_OFFSET)
+#define SAM3U_RTT_SR           (SAM3U_RTT_BASE+SAM3U_RTT_SR_OFFSET)
+
+/* RTT register bit definitions ********************************************************/
+
+#define RTT_MR_RTPRES_SHIFT    (0)       /* Bits 0-15:  Real-time Timer Prescaler Value */
+#define RTT_MR_RTPRES__MASK    (0xffff << RTT_MR_RTPRES_SHIFT)
+#define RTT_MR_ALMIEN          (1 << 16) /* Bit 16: Alarm Interrupt Enable */
+#define RTT_MR_RTTINCIEN       (1 << 17) /* Bit 17: Real-time Timer Increment Int Enable */
+#define RTT_MR_RTTRST          (1 << 18) /* Bit 18: Real-time Timer Restart */
+
+#define RTT_SR_ALMS            (1 << 0)  /* Bit 0:  Real-time Alarm Status */
+#define RTT_SR_RTTINC          (1 << 1)  /* Bit 1:  Real-time Timer Increment */
+
+/****************************************************************************************
+ * Public Types
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Public Data
+ ****************************************************************************************/
+
+/****************************************************************************************
+ * Public Functions
+ ****************************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_SAM3U_SAM3U_RTT_H */