4.104.114.84.95
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[8d6e7120] | 1 | /* |
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| 2 | * This file contains a typical set of register access routines which may be |
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| 3 | * used with the icm7170 chip if accesses to the chip are as follows: |
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| 4 | * |
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| 5 | * + registers are accessed as bytes |
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| 6 | * + registers are only byte-aligned (no address gaps) |
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| 7 | * |
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| 8 | * COPYRIGHT (c) 1989-1997. |
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| 9 | * On-Line Applications Research Corporation (OAR). |
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| 10 | * Copyright assigned to U.S. Government, 1994. |
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| 11 | * |
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| 12 | * The license and distribution terms for this file may be |
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| 13 | * found in the file LICENSE in this distribution or at |
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| 14 | * http://www.OARcorp.com/rtems/license.html. |
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| 15 | * |
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| 16 | * $Id$ |
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| 17 | */ |
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| 18 | |
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| 19 | #include <rtems.h> |
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| 20 | |
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| 21 | #ifndef _ICM7170_MULTIPLIER |
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| 22 | #define _ICM7170_MULTIPLIER 1 |
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| 23 | #define _ICM7170_NAME(_X) _X |
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| 24 | #define _ICM7170_TYPE unsigned8 |
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| 25 | #endif |
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| 26 | |
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| 27 | #define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \ |
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| 28 | (_ICM7170_TYPE *)((_base) + ((_reg) * _ICM7170_MULTIPLIER )) |
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| 29 | |
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| 30 | /* |
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| 31 | * ICM7170 Get Register Routine |
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| 32 | */ |
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| 33 | |
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| 34 | unsigned8 _ICM7170_NAME(icm7170_get_register)( |
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| 35 | unsigned32 ulCtrlPort, |
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| 36 | unsigned8 ucRegNum |
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| 37 | ) |
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| 38 | { |
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| 39 | _ICM7170_TYPE *port; |
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| 40 | |
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| 41 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
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| 42 | |
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| 43 | return *port; |
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| 44 | } |
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| 45 | |
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| 46 | /* |
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| 47 | * ICM7170 Set Register Routine |
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| 48 | */ |
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| 49 | |
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| 50 | void _ICM7170_NAME(icm7170_set_register)( |
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| 51 | unsigned32 ulCtrlPort, |
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| 52 | unsigned8 ucRegNum, |
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| 53 | unsigned8 ucData |
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| 54 | ) |
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| 55 | { |
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| 56 | _ICM7170_TYPE *port; |
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| 57 | |
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| 58 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
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| 59 | |
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| 60 | *port = ucData; |
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| 61 | } |
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