Contiki-NG
reg.h
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  *
14  * 3. Neither the name of the copyright holder nor the names of its
15  * contributors may be used to endorse or promote products derived
16  * from this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29  * OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 /**
32  * \addtogroup cc2538
33  * @{
34  *
35  * \defgroup cc2538-reg cc2538 Register Manipulation
36  *
37  * Macros for hardware access, both direct and via the bit-band region.
38  * @{
39  *
40  * \file
41  * Header file with register manipulation macro definitions
42  */
43 #ifndef REG_H_
44 #define REG_H_
45 
46 #define REG(x) (*((volatile unsigned long *)(x)))
47 #define REG_H(x) (*((volatile unsigned short *)(x)))
48 #define REG_B(x) (*((volatile unsigned char *)(x)))
49 #define REG_BIT_W(x, b) \
50  REG(((unsigned long)(x) & 0xF0000000) | 0x02000000 | \
51  (((unsigned long)(x) & 0x000FFFFF) << 5) | ((b) << 2))
52 #define REG_BIT_H(x, b) \
53  REG_H(((unsigned long)(x) & 0xF0000000) | 0x02000000 | \
54  (((unsigned long)(x) & 0x000FFFFF) << 5) | ((b) << 2))
55 #define REG_BIT_B(x, b) \
56  REG_B(((unsigned long)(x) & 0xF0000000) | 0x02000000 | \
57  (((unsigned long)(x) & 0x000FFFFF) << 5) | ((b) << 2))
58 
59 #endif /* REG_H_ */
60 
61 /**
62  * @}
63  * @}
64  */