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authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-07-29 00:01:56 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-07-29 00:01:56 +0000
commit8d6e7120d54ee34d9117704584e7eb8df27a6b24 (patch)
tree85c8d3fe417bafe586ccb80dbed2296d1cdc33c9 /c/src/libchip/rtc/icm7170_reg.c
parentAdded new files. (diff)
downloadrtems-8d6e7120d54ee34d9117704584e7eb8df27a6b24.tar.bz2
New files.
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-rw-r--r--c/src/libchip/rtc/icm7170_reg.c61
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diff --git a/c/src/libchip/rtc/icm7170_reg.c b/c/src/libchip/rtc/icm7170_reg.c
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+/*
+ * This file contains a typical set of register access routines which may be
+ * used with the icm7170 chip if accesses to the chip are as follows:
+ *
+ * + registers are accessed as bytes
+ * + registers are only byte-aligned (no address gaps)
+ *
+ * COPYRIGHT (c) 1989-1997.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#include <rtems.h>
+
+#ifndef _ICM7170_MULTIPLIER
+#define _ICM7170_MULTIPLIER 1
+#define _ICM7170_NAME(_X) _X
+#define _ICM7170_TYPE unsigned8
+#endif
+
+#define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \
+ (_ICM7170_TYPE *)((_base) + ((_reg) * _ICM7170_MULTIPLIER ))
+
+/*
+ * ICM7170 Get Register Routine
+ */
+
+unsigned8 _ICM7170_NAME(icm7170_get_register)(
+ unsigned32 ulCtrlPort,
+ unsigned8 ucRegNum
+)
+{
+ _ICM7170_TYPE *port;
+
+ port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
+
+ return *port;
+}
+
+/*
+ * ICM7170 Set Register Routine
+ */
+
+void _ICM7170_NAME(icm7170_set_register)(
+ unsigned32 ulCtrlPort,
+ unsigned8 ucRegNum,
+ unsigned8 ucData
+)
+{
+ _ICM7170_TYPE *port;
+
+ port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum );
+
+ *port = ucData;
+}