1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/************************************************************************************
* arch/arm/src/kinetis/kinetis_crc.h
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_KINETIS_KINETIS_CRC_H
#define __ARCH_ARM_SRC_KINETIS_KINETIS_CRC_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#if defined(KINETIS_NCRC) && KINETIS_NCRC > 0
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Register Offsets *****************************************************************/
#define KINETIS_CRC_CRC_OFFSET 0x0000 /* CRC Data Register */
#define KINETIS_CRC_GPOLY_OFFSET 0x0004 /* CRC Polynomial Register */
#define KINETIS_CRC_CTRL_OFFSET 0x0008 /* CRC Control Register */
/* Register Addresses ***************************************************************/
#define KINETIS_CRC_CRC (KINETIS_CRC_BASE+KINETIS_CRC_CRC_OFFSET)
#define KINETIS_CRC_GPOLY (KINETIS_CRC_BASE+KINETIS_CRC_GPOLY_OFFSET)
#define KINETIS_CRC_CTRL (KINETIS_CRC_BASE+KINETIS_CRC_CTRL_OFFSET)
/* Register Bit Definitions *********************************************************/
/* CRC Data Register (32-bit) */
#define CRC_CRC_LL_SHIFT (0) /* Bits 0-7: CRC Low Lower Byte */
#define CRC_CRC_LL_MASK (0xff << CRC_CRC_LL_SHIFT)
#define CRC_CRC_LU_SHIFT (8) /* Bits 8-15: CRC Low Upper Byte */
#define CRC_CRC_LU_MASK (0xff << CRC_CRC_LU_SHIFT)
#define CRC_CRC_HL_SHIFT (16) /* Bits 16-23: CRC High Lower Byte */
#define CRC_CRC_HL_MASK (0xff << CRC_CRC_HL_SHIFT)
#define CRC_CRC_HU_SHIFT (24) /* Bits 24-31: CRC High Upper Byte */
#define CRC_CRC_HU_MASK (0xff << CRC_CRC_HU_SHIFT)
/* CRC Polynomial Register */
#define CRC_GPOLY_LOW_SHIFT (0) /* Bits 0-15: Low polynominal half-word */
#define CRC_GPOLY_LOW_MASK (0xffff << CRC_GPOLY_LOW_SHIFT)
#define CRC_GPOLY_HIGH_SHIFT (16) /* Bits 16-31: High polynominal half-word */
#define CRC_GPOLY_HIGH_MASK (0xffff << CRC_GPOLY_HIGH_SHIFT)
/* CRC Control Register */
/* Bits 0-23: Reserved */
#define CRC_CTRL_TCRC (1 << 24) /* Bit 24: Width of CRC protocol */
#define CRC_CTRL_WAS (1 << 25) /* Bit 25: Write CRC data register as seed */
#define CRC_CTRL_FXOR (1 << 26) /* Bit 26: Complement Read of CRC data register */
/* Bit 27: Reserved */
#define CRC_CTRL_TOTR_SHIFT (28) /* Bits 28-29: Type of Transpose for Read */
#define CRC_CTRL_TOTR_MASK (3 << CRC_CTRL_TOTR_SHIFT)
# define CRC_CTRL_TOTR_NONE (0 << CRC_CTRL_TOTR_SHIFT) /* No transposition */
# define CRC_CTRL_TOTR_BITS (1 << CRC_CTRL_TOTR_SHIFT) /* Bits transposed; bytes are not */
# define CRC_CTRL_TOTR_BOTH (2 << CRC_CTRL_TOTR_SHIFT) /* Both bits bytes and bytes transposed */
# define CRC_CTRL_TOTR_BYTES (3 << CRC_CTRL_TOTR_SHIFT) /* Bytes transposed; bits in byte are not */
#define CRC_CTRL_TOT_SHIFT (30) /* Bits 30-31: Type of Transpose for Writes */
#define CRC_CTRL_TOT_MASK (3 << CRC_CTRL_TOT_SHIFT)
# define CRC_CTRL_TOT_NONE (0 << CRC_CTRL_TOT_SHIFT) /* No transposition */
# define CRC_CTRL_TOT_BITS (1 << CRC_CTRL_TOT_SHIFT) /* Bits transposed; bytes are not */
# define CRC_CTRL_TOT_BOTH (2 << CRC_CTRL_TOT_SHIFT) /* Both bits bytes and bytes transposed */
# define CRC_CTRL_TOT_BYTES (3 << CRC_CTRL_TOT_SHIFT) /* Bytes transposed; bits in byte are not */
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* KINETIS_NCRC && KINETIS_NCRC > 0 */
#endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_CRC_H */
|
