i2c.h
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1 //*****************************************************************************
2 //
3 // i2c.h - Prototypes for the I2C Driver.
4 //
5 // Copyright (c) 2005-2017 Texas Instruments Incorporated. All rights reserved.
6 // Software License Agreement
7 //
8 // Redistribution and use in source and binary forms, with or without
9 // modification, are permitted provided that the following conditions
10 // are met:
11 //
12 // Redistributions of source code must retain the above copyright
13 // notice, this list of conditions and the following disclaimer.
14 //
15 // Redistributions in binary form must reproduce the above copyright
16 // notice, this list of conditions and the following disclaimer in the
17 // documentation and/or other materials provided with the
18 // distribution.
19 //
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22 // from this software without specific prior written permission.
23 //
24 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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33 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 //
36 //*****************************************************************************
37 
38 #ifndef __DRIVERLIB_I2C_H__
39 #define __DRIVERLIB_I2C_H__
40 
41 #include <stdint.h>
42 #include <stdbool.h>
43 
44 //*****************************************************************************
45 //
46 // If building with a C++ compiler, make all of the definitions in this header
47 // have a C binding.
48 //
49 //*****************************************************************************
50 #ifdef __cplusplus
51 extern "C"
52 {
53 #endif
54 
55 //*****************************************************************************
56 //
57 // Defines for the API.
58 //
59 //*****************************************************************************
60 
61 //*****************************************************************************
62 //
63 // Interrupt defines.
64 //
65 //*****************************************************************************
66 #define I2C_INT_MASTER 0x00000001
67 #define I2C_INT_SLAVE 0x00000002
68 
69 //*****************************************************************************
70 //
71 // I2C Master commands.
72 //
73 //*****************************************************************************
74 #define I2C_MASTER_CMD_SINGLE_SEND \
75  0x00000007
76 #define I2C_MASTER_CMD_SINGLE_RECEIVE \
77  0x00000007
78 #define I2C_MASTER_CMD_BURST_SEND_START \
79  0x00000003
80 #define I2C_MASTER_CMD_BURST_SEND_CONT \
81  0x00000001
82 #define I2C_MASTER_CMD_BURST_SEND_FINISH \
83  0x00000005
84 #define I2C_MASTER_CMD_BURST_SEND_STOP \
85  0x00000004
86 #define I2C_MASTER_CMD_BURST_SEND_ERROR_STOP \
87  0x00000004
88 #define I2C_MASTER_CMD_BURST_RECEIVE_START \
89  0x0000000b
90 #define I2C_MASTER_CMD_BURST_RECEIVE_CONT \
91  0x00000009
92 #define I2C_MASTER_CMD_BURST_RECEIVE_FINISH \
93  0x00000005
94 #define I2C_MASTER_CMD_BURST_RECEIVE_ERROR_STOP \
95  0x00000004
96 #define I2C_MASTER_CMD_QUICK_COMMAND \
97  0x00000027
98 #define I2C_MASTER_CMD_HS_MASTER_CODE_SEND \
99  0x00000013
100 #define I2C_MASTER_CMD_FIFO_SINGLE_SEND \
101  0x00000046
102 #define I2C_MASTER_CMD_FIFO_SINGLE_RECEIVE \
103  0x00000046
104 #define I2C_MASTER_CMD_FIFO_BURST_SEND_START \
105  0x00000042
106 #define I2C_MASTER_CMD_FIFO_BURST_SEND_CONT \
107  0x00000040
108 #define I2C_MASTER_CMD_FIFO_BURST_SEND_FINISH \
109  0x00000044
110 #define I2C_MASTER_CMD_FIFO_BURST_SEND_ERROR_STOP \
111  0x00000004
112 #define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_START \
113  0x0000004a
114 #define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_CONT \
115  0x00000048
116 #define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_FINISH \
117  0x00000044
118 #define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_ERROR_STOP \
119  0x00000004
120 
121 //*****************************************************************************
122 //
123 // I2C Master glitch filter configuration.
124 //
125 //*****************************************************************************
126 #define I2C_MASTER_GLITCH_FILTER_DISABLED \
127  0
128 #define I2C_MASTER_GLITCH_FILTER_1 \
129  0x00010000
130 #define I2C_MASTER_GLITCH_FILTER_2 \
131  0x00020000
132 #define I2C_MASTER_GLITCH_FILTER_3 \
133  0x00030000
134 #define I2C_MASTER_GLITCH_FILTER_4 \
135  0x00040000
136 #define I2C_MASTER_GLITCH_FILTER_8 \
137  0x00050000
138 #define I2C_MASTER_GLITCH_FILTER_16 \
139  0x00060000
140 #define I2C_MASTER_GLITCH_FILTER_32 \
141  0x00070000
142 
143 //*****************************************************************************
144 //
145 // I2C Master error status.
146 //
147 //*****************************************************************************
148 #define I2C_MASTER_ERR_NONE 0
149 #define I2C_MASTER_ERR_ADDR_ACK 0x00000004
150 #define I2C_MASTER_ERR_DATA_ACK 0x00000008
151 #define I2C_MASTER_ERR_ARB_LOST 0x00000010
152 #define I2C_MASTER_ERR_CLK_TOUT 0x00000080
153 
154 //*****************************************************************************
155 //
156 // I2C Slave action requests
157 //
158 //*****************************************************************************
159 #define I2C_SLAVE_ACT_NONE 0
160 #define I2C_SLAVE_ACT_RREQ 0x00000001 // Master has sent data
161 #define I2C_SLAVE_ACT_TREQ 0x00000002 // Master has requested data
162 #define I2C_SLAVE_ACT_RREQ_FBR 0x00000005 // Master has sent first byte
163 #define I2C_SLAVE_ACT_OWN2SEL 0x00000008 // Master requested secondary slave
164 #define I2C_SLAVE_ACT_QCMD 0x00000010 // Master has sent a Quick Command
165 #define I2C_SLAVE_ACT_QCMD_DATA 0x00000020 // Master Quick Command value
166 
167 //*****************************************************************************
168 //
169 // Miscellaneous I2C driver definitions.
170 //
171 //*****************************************************************************
172 #define I2C_MASTER_MAX_RETRIES 1000 // Number of retries
173 
174 //*****************************************************************************
175 //
176 // I2C Master interrupts.
177 //
178 //*****************************************************************************
179 #define I2C_MASTER_INT_RX_FIFO_FULL \
180  0x00000800 // RX FIFO Full Interrupt
181 #define I2C_MASTER_INT_TX_FIFO_EMPTY \
182  0x00000400 // TX FIFO Empty Interrupt
183 #define I2C_MASTER_INT_RX_FIFO_REQ \
184  0x00000200 // RX FIFO Request Interrupt
185 #define I2C_MASTER_INT_TX_FIFO_REQ \
186  0x00000100 // TX FIFO Request Interrupt
187 #define I2C_MASTER_INT_ARB_LOST \
188  0x00000080 // Arb Lost Interrupt
189 #define I2C_MASTER_INT_STOP 0x00000040 // Stop Condition Interrupt
190 #define I2C_MASTER_INT_START 0x00000020 // Start Condition Interrupt
191 #define I2C_MASTER_INT_NACK 0x00000010 // Addr/Data NACK Interrupt
192 #define I2C_MASTER_INT_TX_DMA_DONE \
193  0x00000008 // TX DMA Complete Interrupt
194 #define I2C_MASTER_INT_RX_DMA_DONE \
195  0x00000004 // RX DMA Complete Interrupt
196 #define I2C_MASTER_INT_TIMEOUT 0x00000002 // Clock Timeout Interrupt
197 #define I2C_MASTER_INT_DATA 0x00000001 // Data Interrupt
198 
199 //*****************************************************************************
200 //
201 // I2C Slave interrupts.
202 //
203 //*****************************************************************************
204 #define I2C_SLAVE_INT_RX_FIFO_FULL \
205  0x00000100 // RX FIFO Full Interrupt
206 #define I2C_SLAVE_INT_TX_FIFO_EMPTY \
207  0x00000080 // TX FIFO Empty Interrupt
208 #define I2C_SLAVE_INT_RX_FIFO_REQ \
209  0x00000040 // RX FIFO Request Interrupt
210 #define I2C_SLAVE_INT_TX_FIFO_REQ \
211  0x00000020 // TX FIFO Request Interrupt
212 #define I2C_SLAVE_INT_TX_DMA_DONE \
213  0x00000010 // TX DMA Complete Interrupt
214 #define I2C_SLAVE_INT_RX_DMA_DONE \
215  0x00000008 // RX DMA Complete Interrupt
216 #define I2C_SLAVE_INT_STOP 0x00000004 // Stop Condition Interrupt
217 #define I2C_SLAVE_INT_START 0x00000002 // Start Condition Interrupt
218 #define I2C_SLAVE_INT_DATA 0x00000001 // Data Interrupt
219 
220 //*****************************************************************************
221 //
222 // I2C Slave FIFO configuration macros.
223 //
224 //*****************************************************************************
225 #define I2C_SLAVE_TX_FIFO_ENABLE \
226  0x00000002
227 #define I2C_SLAVE_RX_FIFO_ENABLE \
228  0x00000004
229 
230 //*****************************************************************************
231 //
232 // I2C FIFO configuration macros.
233 //
234 //*****************************************************************************
235 #define I2C_FIFO_CFG_TX_MASTER 0x00000000
236 #define I2C_FIFO_CFG_TX_SLAVE 0x00008000
237 #define I2C_FIFO_CFG_RX_MASTER 0x00000000
238 #define I2C_FIFO_CFG_RX_SLAVE 0x80000000
239 #define I2C_FIFO_CFG_TX_MASTER_DMA \
240  0x00002000
241 #define I2C_FIFO_CFG_TX_SLAVE_DMA \
242  0x0000a000
243 #define I2C_FIFO_CFG_RX_MASTER_DMA \
244  0x20000000
245 #define I2C_FIFO_CFG_RX_SLAVE_DMA \
246  0xa0000000
247 #define I2C_FIFO_CFG_TX_NO_TRIG 0x00000000
248 #define I2C_FIFO_CFG_TX_TRIG_1 0x00000001
249 #define I2C_FIFO_CFG_TX_TRIG_2 0x00000002
250 #define I2C_FIFO_CFG_TX_TRIG_3 0x00000003
251 #define I2C_FIFO_CFG_TX_TRIG_4 0x00000004
252 #define I2C_FIFO_CFG_TX_TRIG_5 0x00000005
253 #define I2C_FIFO_CFG_TX_TRIG_6 0x00000006
254 #define I2C_FIFO_CFG_TX_TRIG_7 0x00000007
255 #define I2C_FIFO_CFG_TX_TRIG_8 0x00000008
256 #define I2C_FIFO_CFG_RX_NO_TRIG 0x00000000
257 #define I2C_FIFO_CFG_RX_TRIG_1 0x00010000
258 #define I2C_FIFO_CFG_RX_TRIG_2 0x00020000
259 #define I2C_FIFO_CFG_RX_TRIG_3 0x00030000
260 #define I2C_FIFO_CFG_RX_TRIG_4 0x00040000
261 #define I2C_FIFO_CFG_RX_TRIG_5 0x00050000
262 #define I2C_FIFO_CFG_RX_TRIG_6 0x00060000
263 #define I2C_FIFO_CFG_RX_TRIG_7 0x00070000
264 #define I2C_FIFO_CFG_RX_TRIG_8 0x00080000
265 
266 //*****************************************************************************
267 //
268 // I2C FIFO status.
269 //
270 //*****************************************************************************
271 #define I2C_FIFO_RX_BELOW_TRIG_LEVEL \
272  0x00040000
273 #define I2C_FIFO_RX_FULL 0x00020000
274 #define I2C_FIFO_RX_EMPTY 0x00010000
275 #define I2C_FIFO_TX_BELOW_TRIG_LEVEL \
276  0x00000004
277 #define I2C_FIFO_TX_FULL 0x00000002
278 #define I2C_FIFO_TX_EMPTY 0x00000001
279 
280 //*****************************************************************************
281 //
282 // Prototypes for the APIs.
283 //
284 //*****************************************************************************
285 extern void I2CIntRegister(uint32_t ui32Base, void(*pfnHandler)(void));
286 extern void I2CIntUnregister(uint32_t ui32Base);
287 extern void I2CTxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config);
288 extern void I2CTxFIFOFlush(uint32_t ui32Base);
289 extern void I2CRxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config);
290 extern void I2CRxFIFOFlush(uint32_t ui32Base);
291 extern uint32_t I2CFIFOStatus(uint32_t ui32Base);
292 extern void I2CFIFODataPut(uint32_t ui32Base, uint8_t ui8Data);
293 extern uint32_t I2CFIFODataPutNonBlocking(uint32_t ui32Base,
294  uint8_t ui8Data);
295 extern uint32_t I2CFIFODataGet(uint32_t ui32Base);
296 extern uint32_t I2CFIFODataGetNonBlocking(uint32_t ui32Base,
297  uint8_t *pui8Data);
298 extern void I2CMasterBurstLengthSet(uint32_t ui32Base,
299  uint8_t ui8Length);
300 extern uint32_t I2CMasterBurstCountGet(uint32_t ui32Base);
301 extern void I2CMasterGlitchFilterConfigSet(uint32_t ui32Base,
302  uint32_t ui32Config);
303 extern void I2CSlaveFIFOEnable(uint32_t ui32Base, uint32_t ui32Config);
304 extern void I2CSlaveFIFODisable(uint32_t ui32Base);
305 extern bool I2CMasterBusBusy(uint32_t ui32Base);
306 extern bool I2CMasterBusy(uint32_t ui32Base);
307 extern void I2CMasterControl(uint32_t ui32Base, uint32_t ui32Cmd);
308 extern uint32_t I2CMasterDataGet(uint32_t ui32Base);
309 extern void I2CMasterDataPut(uint32_t ui32Base, uint8_t ui8Data);
310 extern void I2CMasterDisable(uint32_t ui32Base);
311 extern void I2CMasterEnable(uint32_t ui32Base);
312 extern uint32_t I2CMasterErr(uint32_t ui32Base);
313 extern void I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk,
314  bool bFast);
315 extern void I2CMasterIntClear(uint32_t ui32Base);
316 extern void I2CMasterIntDisable(uint32_t ui32Base);
317 extern void I2CMasterIntEnable(uint32_t ui32Base);
318 extern bool I2CMasterIntStatus(uint32_t ui32Base, bool bMasked);
319 extern void I2CMasterIntEnableEx(uint32_t ui32Base,
320  uint32_t ui32IntFlags);
321 extern void I2CMasterIntDisableEx(uint32_t ui32Base,
322  uint32_t ui32IntFlags);
323 extern uint32_t I2CMasterIntStatusEx(uint32_t ui32Base,
324  bool bMasked);
325 extern void I2CMasterIntClearEx(uint32_t ui32Base,
326  uint32_t ui32IntFlags);
327 extern void I2CMasterTimeoutSet(uint32_t ui32Base, uint32_t ui32Value);
328 extern void I2CSlaveACKOverride(uint32_t ui32Base, bool bEnable);
329 extern void I2CSlaveACKValueSet(uint32_t ui32Base, bool bACK);
330 extern uint32_t I2CMasterLineStateGet(uint32_t ui32Base);
331 extern void I2CMasterSlaveAddrSet(uint32_t ui32Base,
332  uint8_t ui8SlaveAddr,
333  bool bReceive);
334 extern uint32_t I2CSlaveDataGet(uint32_t ui32Base);
335 extern void I2CSlaveDataPut(uint32_t ui32Base, uint8_t ui8Data);
336 extern void I2CSlaveDisable(uint32_t ui32Base);
337 extern void I2CSlaveEnable(uint32_t ui32Base);
338 extern void I2CSlaveInit(uint32_t ui32Base, uint8_t ui8SlaveAddr);
339 extern void I2CSlaveAddressSet(uint32_t ui32Base, uint8_t ui8AddrNum,
340  uint8_t ui8SlaveAddr);
341 extern void I2CSlaveIntClear(uint32_t ui32Base);
342 extern void I2CSlaveIntDisable(uint32_t ui32Base);
343 extern void I2CSlaveIntEnable(uint32_t ui32Base);
344 extern void I2CSlaveIntClearEx(uint32_t ui32Base, uint32_t ui32IntFlags);
345 extern void I2CSlaveIntDisableEx(uint32_t ui32Base,
346  uint32_t ui32IntFlags);
347 extern void I2CSlaveIntEnableEx(uint32_t ui32Base, uint32_t ui32IntFlags);
348 extern bool I2CSlaveIntStatus(uint32_t ui32Base, bool bMasked);
349 extern uint32_t I2CSlaveIntStatusEx(uint32_t ui32Base,
350  bool bMasked);
351 extern uint32_t I2CSlaveStatus(uint32_t ui32Base);
352 extern void I2CLoopbackEnable(uint32_t ui32Base);
353 
354 //*****************************************************************************
355 //
356 // Mark the end of the C bindings section for C++ compilers.
357 //
358 //*****************************************************************************
359 #ifdef __cplusplus
360 }
361 #endif
362 
363 #endif // __DRIVERLIB_I2C_H__
bool I2CMasterBusy(uint32_t ui32Base)
Definition: i2c.c:1150
void I2CSlaveAddressSet(uint32_t ui32Base, uint8_t ui8AddrNum, uint8_t ui8SlaveAddr)
Definition: i2c.c:283
void I2CMasterEnable(uint32_t ui32Base)
Definition: i2c.c:329
void I2CMasterGlitchFilterConfigSet(uint32_t ui32Base, uint32_t ui32Config)
Definition: i2c.c:1969
void I2CRxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config)
Definition: i2c.c:1669
bool I2CMasterIntStatus(uint32_t ui32Base, bool bMasked)
Definition: i2c.c:784
void I2CTxFIFOFlush(uint32_t ui32Base)
Definition: i2c.c:1631
void I2CLoopbackEnable(uint32_t ui32Base)
Definition: i2c.c:2061
bool I2CMasterBusBusy(uint32_t ui32Base)
Definition: i2c.c:1185
uint32_t I2CFIFODataGet(uint32_t ui32Base)
Definition: i2c.c:1826
void I2CMasterIntDisable(uint32_t ui32Base)
Definition: i2c.c:665
void I2CMasterDisable(uint32_t ui32Base)
Definition: i2c.c:384
void I2CSlaveDataPut(uint32_t ui32Base, uint8_t ui8Data)
Definition: i2c.c:1536
uint32_t I2CSlaveStatus(uint32_t ui32Base)
Definition: i2c.c:1510
uint32_t I2CMasterBurstCountGet(uint32_t ui32Base)
Definition: i2c.c:1928
void I2CTxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config)
Definition: i2c.c:1601
void I2CSlaveIntEnableEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:640
void I2CRxFIFOFlush(uint32_t ui32Base)
Definition: i2c.c:1699
void I2CMasterDataPut(uint32_t ui32Base, uint8_t ui8Data)
Definition: i2c.c:1342
void I2CSlaveIntClear(uint32_t ui32Base)
Definition: i2c.c:1023
void I2CFIFODataPut(uint32_t ui32Base, uint8_t ui8Data)
Definition: i2c.c:1757
void I2CSlaveACKValueSet(uint32_t ui32Base, bool bACK)
Definition: i2c.c:1460
void I2CMasterSlaveAddrSet(uint32_t ui32Base, uint8_t ui8SlaveAddr, bool bReceive)
Definition: i2c.c:1094
void I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32I2CClk, bool bFast)
Definition: i2c.c:181
uint32_t I2CMasterIntStatusEx(uint32_t ui32Base, bool bMasked)
Definition: i2c.c:822
void I2CSlaveInit(uint32_t ui32Base, uint8_t ui8SlaveAddr)
Definition: i2c.c:248
void I2CSlaveIntEnable(uint32_t ui32Base)
Definition: i2c.c:600
void I2CMasterIntClear(uint32_t ui32Base)
Definition: i2c.c:942
uint32_t I2CSlaveIntStatusEx(uint32_t ui32Base, bool bMasked)
Definition: i2c.c:898
uint32_t I2CFIFODataPutNonBlocking(uint32_t ui32Base, uint8_t ui8Data)
Definition: i2c.c:1791
void I2CSlaveFIFOEnable(uint32_t ui32Base, uint32_t ui32Config)
Definition: i2c.c:2006
void I2CSlaveDisable(uint32_t ui32Base)
Definition: i2c.c:409
void I2CMasterTimeoutSet(uint32_t ui32Base, uint32_t ui32Value)
Definition: i2c.c:1398
void I2CMasterIntEnableEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:575
void I2CSlaveFIFODisable(uint32_t ui32Base)
Definition: i2c.c:2032
uint32_t I2CFIFOStatus(uint32_t ui32Base)
Definition: i2c.c:1729
void I2CSlaveIntDisable(uint32_t ui32Base)
Definition: i2c.c:722
void I2CMasterIntEnable(uint32_t ui32Base)
Definition: i2c.c:532
void I2CMasterControl(uint32_t ui32Base, uint32_t ui32Cmd)
Definition: i2c.c:1243
uint32_t I2CMasterLineStateGet(uint32_t ui32Base)
Definition: i2c.c:1123
bool I2CSlaveIntStatus(uint32_t ui32Base, bool bMasked)
Definition: i2c.c:860
uint32_t I2CMasterErr(uint32_t ui32Base)
Definition: i2c.c:1293
uint32_t I2CSlaveDataGet(uint32_t ui32Base)
Definition: i2c.c:1562
uint32_t I2CMasterDataGet(uint32_t ui32Base)
Definition: i2c.c:1368
uint32_t I2CFIFODataGetNonBlocking(uint32_t ui32Base, uint8_t *pui8Data)
Definition: i2c.c:1861
void I2CMasterBurstLengthSet(uint32_t ui32Base, uint8_t ui8Length)
Definition: i2c.c:1900
void I2CSlaveEnable(uint32_t ui32Base)
Definition: i2c.c:354
void I2CMasterIntDisableEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:697
void I2CMasterIntClearEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:987
void I2CSlaveACKOverride(uint32_t ui32Base, bool bEnable)
Definition: i2c.c:1425
void I2CIntRegister(uint32_t ui32Base, void(*pfnHandler)(void))
Definition: i2c.c:449
void I2CSlaveIntClearEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:1063
void I2CSlaveIntDisableEx(uint32_t ui32Base, uint32_t ui32IntFlags)
Definition: i2c.c:754
void I2CIntUnregister(uint32_t ui32Base)
Definition: i2c.c:493
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