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
118
119
120
|
//*****************************************************************************
//
// hw_ssi.h - Macros used when accessing the SSI hardware.
//
// Copyright (c) 2005,2006 Luminary Micro, Inc. All rights reserved.
//
// Software License Agreement
//
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's Stellaris Family of microcontroller products.
//
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws. All rights are reserved. Any use in violation
// of the foregoing restrictions may subject the user to criminal sanctions
// under applicable laws, as well as to civil liability for the breach of the
// terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 816 of the Stellaris Driver Library.
//
//*****************************************************************************
#ifndef __HW_SSI_H__
#define __HW_SSI_H__
//*****************************************************************************
//
// The following define the offsets of the SSI registers.
//
//*****************************************************************************
#define SSI_O_CR0 0x00000000 // Control register 0
#define SSI_O_CR1 0x00000004 // Control register 1
#define SSI_O_DR 0x00000008 // Data register
#define SSI_O_SR 0x0000000C // Status register
#define SSI_O_CPSR 0x00000010 // Clock prescale register
#define SSI_O_IM 0x00000014 // Int mask set and clear register
#define SSI_O_RIS 0x00000018 // Raw interrupt register
#define SSI_O_MIS 0x0000001C // Masked interrupt register
#define SSI_O_ICR 0x00000020 // Interrupt clear register
//*****************************************************************************
//
// The following define the bit fields in the SSI Control register 0.
//
//*****************************************************************************
#define SSI_CR0_SCR 0x0000FF00 // Serial clock rate
#define SSI_CR0_SPH 0x00000080 // SSPCLKOUT phase
#define SSI_CR0_SPO 0x00000040 // SSPCLKOUT polarity
#define SSI_CR0_FRF_MASK 0x00000030 // Frame format mask
#define SSI_CR0_FRF_MOTO 0x00000000 // Motorola SPI frame format
#define SSI_CR0_FRF_TI 0x00000010 // TI sync serial frame format
#define SSI_CR0_FRF_NMW 0x00000020 // National Microwire frame format
#define SSI_CR0_DSS 0x0000000F // Data size select
#define SSI_CR0_DSS_4 0x00000003 // 4 bit data
#define SSI_CR0_DSS_5 0x00000004 // 5 bit data
#define SSI_CR0_DSS_6 0x00000005 // 6 bit data
#define SSI_CR0_DSS_7 0x00000006 // 7 bit data
#define SSI_CR0_DSS_8 0x00000007 // 8 bit data
#define SSI_CR0_DSS_9 0x00000008 // 9 bit data
#define SSI_CR0_DSS_10 0x00000009 // 10 bit data
#define SSI_CR0_DSS_11 0x0000000A // 11 bit data
#define SSI_CR0_DSS_12 0x0000000B // 12 bit data
#define SSI_CR0_DSS_13 0x0000000C // 13 bit data
#define SSI_CR0_DSS_14 0x0000000D // 14 bit data
#define SSI_CR0_DSS_15 0x0000000E // 15 bit data
#define SSI_CR0_DSS_16 0x0000000F // 16 bit data
//*****************************************************************************
//
// The following define the bit fields in the SSI Control register 1.
//
//*****************************************************************************
#define SSI_CR1_SOD 0x00000008 // Slave mode output disable
#define SSI_CR1_MS 0x00000004 // Master or slave mode select
#define SSI_CR1_SSE 0x00000002 // Sync serial port enable
#define SSI_CR1_LBM 0x00000001 // Loopback mode
//*****************************************************************************
//
// The following define the bit fields in the SSI Status register.
//
//*****************************************************************************
#define SSI_SR_BSY 0x00000010 // SSI busy
#define SSI_SR_RFF 0x00000008 // RX FIFO full
#define SSI_SR_RNE 0x00000004 // RX FIFO not empty
#define SSI_SR_TNF 0x00000002 // TX FIFO not full
#define SSI_SR_TFE 0x00000001 // TX FIFO empty
//*****************************************************************************
//
// The following define the bit fields in the SSI clock prescale register.
//
//*****************************************************************************
#define SSI_CPSR_CPSDVSR_MASK 0x000000FF // Clock prescale
//*****************************************************************************
//
// The following define information concerning the SSI Data register.
//
//*****************************************************************************
#define TX_FIFO_SIZE (8) // Number of entries in the TX FIFO
#define RX_FIFO_SIZE (8) // Number of entries in the RX FIFO
//*****************************************************************************
//
// The following define the bit fields in the interrupt mask set and clear,
// raw interrupt, masked interrupt, and interrupt clear registers.
//
//*****************************************************************************
#define SSI_INT_TXFF 0x00000008 // TX FIFO interrupt
#define SSI_INT_RXFF 0x00000004 // RX FIFO interrupt
#define SSI_INT_RXTO 0x00000002 // RX timeout interrupt
#define SSI_INT_RXOR 0x00000001 // RX overrun interrupt
#endif // __HW_SSI_H__
|
