4.104.114.84.95
Line | |
---|
1 | /* |
---|
2 | * This file contains a typical set of register access routines which may be |
---|
3 | * used with the m48t08 chip if accesses to the chip are as follows: |
---|
4 | * |
---|
5 | * + registers are accessed as bytes |
---|
6 | * + registers are only byte-aligned (no address gaps) |
---|
7 | * |
---|
8 | * COPYRIGHT (c) 1989-1997. |
---|
9 | * On-Line Applications Research Corporation (OAR). |
---|
10 | * |
---|
11 | * The license and distribution terms for this file may be |
---|
12 | * found in the file LICENSE in this distribution or at |
---|
13 | * http://www.rtems.com/license/LICENSE. |
---|
14 | * |
---|
15 | * $Id$ |
---|
16 | */ |
---|
17 | |
---|
18 | #include <rtems.h> |
---|
19 | |
---|
20 | #ifndef _M48T08_MULTIPLIER |
---|
21 | #define _M48T08_MULTIPLIER 1 |
---|
22 | #define _M48T08_NAME(_X) _X |
---|
23 | #define _M48T08_TYPE uint8_t |
---|
24 | #endif |
---|
25 | |
---|
26 | #define CALCULATE_REGISTER_ADDRESS( _base, _reg ) \ |
---|
27 | (_M48T08_TYPE *)((_base) + ((_reg) * _M48T08_MULTIPLIER )) |
---|
28 | |
---|
29 | /* |
---|
30 | * M48T08 Get Register Routine |
---|
31 | */ |
---|
32 | |
---|
33 | uint32_t _M48T08_NAME(m48t08_get_register)( |
---|
34 | uint32_t ulCtrlPort, |
---|
35 | uint8_t ucRegNum |
---|
36 | ) |
---|
37 | { |
---|
38 | _M48T08_TYPE *port; |
---|
39 | |
---|
40 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
---|
41 | |
---|
42 | return *port; |
---|
43 | } |
---|
44 | |
---|
45 | /* |
---|
46 | * M48T08 Set Register Routine |
---|
47 | */ |
---|
48 | |
---|
49 | void _M48T08_NAME(m48t08_set_register)( |
---|
50 | uint32_t ulCtrlPort, |
---|
51 | uint8_t ucRegNum, |
---|
52 | uint32_t ucData |
---|
53 | ) |
---|
54 | { |
---|
55 | _M48T08_TYPE *port; |
---|
56 | |
---|
57 | port = CALCULATE_REGISTER_ADDRESS( ulCtrlPort, ucRegNum ); |
---|
58 | |
---|
59 | *port = ucData; |
---|
60 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.