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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-07-29 00:01:56 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-07-29 00:01:56 +0000 |
commit | 8d6e7120d54ee34d9117704584e7eb8df27a6b24 (patch) | |
tree | 85c8d3fe417bafe586ccb80dbed2296d1cdc33c9 /c/src/libchip/rtc/icm7170_reg.c | |
parent | Added new files. (diff) | |
download | rtems-8d6e7120d54ee34d9117704584e7eb8df27a6b24.tar.bz2 |
New files.
Diffstat (limited to '')
-rw-r--r-- | c/src/libchip/rtc/icm7170_reg.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/c/src/libchip/rtc/icm7170_reg.c b/c/src/libchip/rtc/icm7170_reg.c new file mode 100644 index 0000000000..bdf7bfb31d --- /dev/null +++ b/c/src/libchip/rtc/icm7170_reg.c @@ -0,0 +1,61 @@ +/* + * 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; +} |