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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
//*****************************************************************************
//
// i2c.h - Prototypes for the I2C Driver.
//
// 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 991 of the Stellaris Driver Library.
//
//*****************************************************************************
#ifndef __I2C_H__
#define __I2C_H__
#ifdef __cplusplus
extern "C"
{
#endif
//*****************************************************************************
//
// Defines for the API.
//
//*****************************************************************************
//*****************************************************************************
//
// Interrupt defines.
//
//*****************************************************************************
#define I2C_INT_MASTER 0x00000001
#define I2C_INT_SLAVE 0x00000002
//*****************************************************************************
//
// I2C Master commands.
//
//*****************************************************************************
#define I2C_MASTER_CMD_SINGLE_SEND \
(I2C_MASTER_CS_STOP | I2C_MASTER_CS_START | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_SINGLE_RECEIVE \
(I2C_MASTER_CS_STOP | I2C_MASTER_CS_START | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_SEND_START \
(I2C_MASTER_CS_START | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_SEND_CONT \
(I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_SEND_FINISH \
(I2C_MASTER_CS_STOP | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_SEND_ERROR_STOP \
(I2C_MASTER_CS_STOP)
#define I2C_MASTER_CMD_BURST_RECEIVE_START \
(I2C_MASTER_CS_ACK | I2C_MASTER_CS_START | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_RECEIVE_CONT \
(I2C_MASTER_CS_ACK | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_RECEIVE_FINISH \
(I2C_MASTER_CS_STOP | I2C_MASTER_CS_RUN)
#define I2C_MASTER_CMD_BURST_RECEIVE_ERROR_STOP \
(I2C_MASTER_CS_STOP | I2C_MASTER_CS_RUN)
//*****************************************************************************
//
// I2C Master error status.
//
//*****************************************************************************
#define I2C_MASTER_ERR_NONE 0
#define I2C_MASTER_ERR_ADDR_ACK 0x00000004
#define I2C_MASTER_ERR_DATA_ACK 0x00000008
#define I2C_MASTER_ERR_ARB_LOST 0x00000010
//*****************************************************************************
//
// I2C Slave action requests
//
//*****************************************************************************
#define I2C_SLAVE_ACT_NONE 0
#define I2C_SLAVE_ACT_RREQ 0x00000001 // Master has sent data
#define I2C_SLAVE_ACT_TREQ 0x00000002 // Master has requested data
//*****************************************************************************
// Miscellaneous I2C driver definitions.
//*****************************************************************************
#define I2C_MASTER_MAX_RETRIES 1000 // Number of retries
//*****************************************************************************
//
// Prototypes for the APIs.
//
//*****************************************************************************
extern void I2CIntRegister(unsigned long ulBase, void(fnHandler)(void));
extern void I2CIntUnregister(unsigned long ulBase);
extern tBoolean I2CMasterBusBusy(unsigned long ulBase);
extern tBoolean I2CMasterBusy(unsigned long ulBase);
extern void I2CMasterControl(unsigned long ulBase, unsigned long ulCmd);
extern unsigned long I2CMasterDataGet(unsigned long ulBase);
extern void I2CMasterDataPut(unsigned long ulBase, unsigned char ucData);
extern void I2CMasterDisable(unsigned long ulBase);
extern void I2CMasterEnable(unsigned long ulBase);
extern unsigned long I2CMasterErr(unsigned long ulBase);
extern void I2CMasterInit(unsigned long ulBase, tBoolean bFast);
extern void I2CMasterIntClear(unsigned long ulBase);
extern void I2CMasterIntDisable(unsigned long ulBase);
extern void I2CMasterIntEnable(unsigned long ulBase);
extern tBoolean I2CMasterIntStatus(unsigned long ulBase, tBoolean bMasked);
extern void I2CMasterSlaveAddrSet(unsigned long ulBase,
unsigned char ucSlaveAddr,
tBoolean bReceive);
extern unsigned long I2CSlaveDataGet(unsigned long ulBase);
extern void I2CSlaveDataPut(unsigned long ulBase, unsigned char ucData);
extern void I2CSlaveDisable(unsigned long ulBase);
extern void I2CSlaveEnable(unsigned long ulBase);
extern void I2CSlaveInit(unsigned long ulBase, unsigned char ucSlaveAddr);
extern void I2CSlaveIntClear(unsigned long ulBase);
extern void I2CSlaveIntDisable(unsigned long ulBase);
extern void I2CSlaveIntEnable(unsigned long ulBase);
extern tBoolean I2CSlaveIntStatus(unsigned long ulBase, tBoolean bMasked);
extern unsigned long I2CSlaveStatus(unsigned long ulBase);
extern void I2CMasterInitExpClk(unsigned long ulBase, unsigned long ulI2CClk,
tBoolean bFast);
#ifdef __cplusplus
}
#endif
#endif // __I2C_H__
|
