amiro-lld / include / PCAL6524 / v1 / alld_PCAL6524_v1.h @ c4db2363
History | View | Annotate | Download (16.64 KB)
1 |
/*
|
---|---|
2 |
AMiRo-LLD is a compilation of low-level hardware drivers for the Autonomous Mini Robot (AMiRo) platform.
|
3 |
Copyright (C) 2016..2019 Thomas Schöpping et al.
|
4 |
|
5 |
This program is free software: you can redistribute it and/or modify
|
6 |
it under the terms of the GNU Lesser General Public License as published by
|
7 |
the Free Software Foundation, either version 3 of the License, or
|
8 |
(at your option) any later version.
|
9 |
|
10 |
This program is distributed in the hope that it will be useful,
|
11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
GNU Lesser General Public License for more details.
|
14 |
|
15 |
You should have received a copy of the GNU Lesser General Public License
|
16 |
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
17 |
*/
|
18 |
|
19 |
/**
|
20 |
* @file alld_PCAL6524_v1.h
|
21 |
* @brief GPIO extender macros and structures.
|
22 |
*
|
23 |
* @addtogroup lld_gpioext
|
24 |
* @{
|
25 |
*/
|
26 |
|
27 |
#ifndef AMIROLLD_PCAL6524_V1_H
|
28 |
#define AMIROLLD_PCAL6524_V1_H
|
29 |
|
30 |
#include <amiro-lld.h> |
31 |
|
32 |
#if (defined(AMIROLLD_CFG_PCAL6524) && (AMIROLLD_CFG_PCAL6524 == 1)) || defined(__DOXYGEN__) |
33 |
|
34 |
/******************************************************************************/
|
35 |
/* CONSTANTS */
|
36 |
/******************************************************************************/
|
37 |
|
38 |
/**
|
39 |
* @brief Maximum I2C frequency.
|
40 |
*/
|
41 |
#define PCAL6524_LLD_I2C_MAXFREQUENCY 1000000 |
42 |
|
43 |
/**
|
44 |
* @brief A falling edge indicats an interrupt.
|
45 |
*/
|
46 |
#define PCAL6524_LLD_INT_EDGE APAL_GPIO_EDGE_FALLING
|
47 |
|
48 |
/******************************************************************************/
|
49 |
/* SETTINGS */
|
50 |
/******************************************************************************/
|
51 |
|
52 |
/******************************************************************************/
|
53 |
/* CHECKS */
|
54 |
/******************************************************************************/
|
55 |
|
56 |
/******************************************************************************/
|
57 |
/* DATA STRUCTURES AND TYPES */
|
58 |
/******************************************************************************/
|
59 |
|
60 |
/**
|
61 |
* @brief The PCAL6524Driver sruct.
|
62 |
*/
|
63 |
typedef struct { |
64 |
apalI2CDriver_t* i2cd; |
65 |
apalI2Caddr_t addr; |
66 |
} PCAL6524Driver; |
67 |
|
68 |
/**
|
69 |
* @brief Possible I2C address configurations.
|
70 |
*/
|
71 |
enum {
|
72 |
PCAL6524_LLD_I2C_ADDR_FIXED = 0x0020u, /**< Fixed part of the I2C address. */ |
73 |
PCAL6524_LLD_I2C_ADDR_SCL = 0x0020u, /**< ADDR pin connected to SCL. */ |
74 |
PCAL6524_LLD_I2C_ADDR_SDA = 0x0021u, /**< ADDR pin connected to SDA. */ |
75 |
PCAL6524_LLD_I2C_ADDR_VSS = 0x0022u, /**< ADDR pin connected to VSS. */ |
76 |
PCAL6524_LLD_I2C_ADDR_VDD = 0x0023u, /**< ADDR pin connected to VDD. */ |
77 |
PCAL6524_LLD_I2C_ADDR_DEVICEID = 0x007Cu, /**< Special address to read device ID information. */ |
78 |
}; |
79 |
|
80 |
/**
|
81 |
* @brief Command bit to enable auto-incrementation of command value.
|
82 |
* @details Can be added (ORed) to any command value.
|
83 |
*/
|
84 |
#define PCAL6524_LLD_CMD_AUTOINCREMENT 0x80u |
85 |
|
86 |
/**
|
87 |
* @brief The total number of registers that can be accessed.
|
88 |
* @note This is the maximum number of bytes that may be read or written continuously.
|
89 |
*/
|
90 |
#define PCAL6524_LLD_NUM_REGISTERS 52 |
91 |
|
92 |
typedef union { |
93 |
uint8_t raw[3];
|
94 |
struct {
|
95 |
uint16_t name : 12;
|
96 |
uint16_t part : 9;
|
97 |
uint8_t revision : 3;
|
98 |
}; |
99 |
} pcal6524_lld_deviceid_t; |
100 |
|
101 |
/**
|
102 |
* @brief Control commands for the PCAL6524.
|
103 |
*/
|
104 |
typedef enum { |
105 |
PCAL6524_LLD_CMD_INPUT_P0 = 0x00u, /**< read only */ |
106 |
PCAL6524_LLD_CMD_INPUT_P1 = 0x01u, /**< read only */ |
107 |
PCAL6524_LLD_CMD_INPUT_P2 = 0x02u, /**< read only */ |
108 |
PCAL6524_LLD_CMD_OUTPUT_P0 = 0x04u, /**< read/write */ |
109 |
PCAL6524_LLD_CMD_OUTPUT_P1 = 0x05u, /**< read/write */ |
110 |
PCAL6524_LLD_CMD_OUTPUT_P2 = 0x06u, /**< read/write */ |
111 |
PCAL6524_LLD_CMD_POLARITYINVERSION_P0 = 0x08u, /**< read/write */ |
112 |
PCAL6524_LLD_CMD_POLARITYINVERSION_P1 = 0x09u, /**< read/write */ |
113 |
PCAL6524_LLD_CMD_POLARITYINVERSION_P2 = 0x0Au, /**< read/write */ |
114 |
PCAL6524_LLD_CMD_CONFIGURATION_P0 = 0x0Cu, /**< read/write */ |
115 |
PCAL6524_LLD_CMD_CONFIGURATION_P1 = 0x0Du, /**< read/write */ |
116 |
PCAL6524_LLD_CMD_CONFIGURATION_P2 = 0x0Eu, /**< read/write */ |
117 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P0A = 0x40u, /**< read/write */ |
118 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P0B = 0x41u, /**< read/write */ |
119 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P1A = 0x42u, /**< read/write */ |
120 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P1B = 0x43u, /**< read/write */ |
121 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P2A = 0x44u, /**< read/write */ |
122 |
PCAL6524_LLD_CMD_OUTPUTDRIVESTRENGTH_P2B = 0x45u, /**< read/write */ |
123 |
PCAL6524_LLD_CMD_INPUTLATCH_P0 = 0x48u, /**< read/write */ |
124 |
PCAL6524_LLD_CMD_INPUTLATCH_P1 = 0x49u, /**< read/write */ |
125 |
PCAL6524_LLD_CMD_INPUTLATCH_P2 = 0x4Au, /**< read/write */ |
126 |
PCAL6524_LLD_CMD_PUPDENABLE_P0 = 0x4Cu, /**< read/write */ |
127 |
PCAL6524_LLD_CMD_PUPDENABLE_P1 = 0x4Du, /**< read/write */ |
128 |
PCAL6524_LLD_CMD_PUPDENABLE_P2 = 0x4Eu, /**< read/write */ |
129 |
PCAL6524_LLD_CMD_PUPDSELECTION_P0 = 0x50u, /**< read/write */ |
130 |
PCAL6524_LLD_CMD_PUPDSELECTION_P1 = 0x51u, /**< read/write */ |
131 |
PCAL6524_LLD_CMD_PUPDSELECTION_P2 = 0x52u, /**< read/write */ |
132 |
PCAL6524_LLD_CMD_INTERRUPTMASK_P0 = 0x54u, /**< read/write */ |
133 |
PCAL6524_LLD_CMD_INTERRUPTMASK_P1 = 0x55u, /**< read/write */ |
134 |
PCAL6524_LLD_CMD_INTERRUPTMASK_P2 = 0x56u, /**< read/write */ |
135 |
PCAL6524_LLD_CMD_INTERRUPTSTATUS_P0 = 0x58u, /**< read only */ |
136 |
PCAL6524_LLD_CMD_INTERRUPTSTATUS_P1 = 0x59u, /**< read only */ |
137 |
PCAL6524_LLD_CMD_INTERRUPTSTATUS_P2 = 0x5Au, /**< read only */ |
138 |
PCAL6524_LLD_CMD_OUTPUTCONFIGURATION = 0x5Cu, /**< read/write */ |
139 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P0A = 0x60u, /**< read/write */ |
140 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P0B = 0x61u, /**< read/write */ |
141 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P1A = 0x62u, /**< read/write */ |
142 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P1B = 0x63u, /**< read/write */ |
143 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P2A = 0x64u, /**< read/write */ |
144 |
PCAL6524_LLD_CMD_INTERRUPTEDGE_P2B = 0x65u, /**< read/write */ |
145 |
PCAL6524_LLD_CMD_INTERRUPTCLEAR_P0 = 0x68u, /**< write only */ |
146 |
PCAL6524_LLD_CMD_INTERRUPTCLEAR_P1 = 0x69u, /**< write only */ |
147 |
PCAL6524_LLD_CMD_INTERRUPTCLEAR_P2 = 0x6Au, /**< write only */ |
148 |
PCAL6524_LLD_CMD_INPUTSTATUS_P0 = 0x6Cu, /**< read only */ |
149 |
PCAL6524_LLD_CMD_INPUTSTATUS_P1 = 0x6Du, /**< read only */ |
150 |
PCAL6524_LLD_CMD_INPUTSTATUS_P2 = 0x6Eu, /**< read only */ |
151 |
PCAL6524_LLD_CMD_INDIVIDUALPINOUTPUTCONFIGURATION_P0 = 0x70u, /**< read/write */ |
152 |
PCAL6524_LLD_CMD_INDIVIDUALPINOUTPUTCONFIGURATION_P1 = 0x71u, /**< read/write */ |
153 |
PCAL6524_LLD_CMD_INDIVIDUALPINOUTPUTCONFIGURATION_P2 = 0x72u, /**< read/write */ |
154 |
PCAL6524_LLD_CMD_SWITCHDEBOUNCEENABLE_P0 = 0x74u, /**< read/write */ |
155 |
PCAL6524_LLD_CMD_SWITCHDEBOUNCEENABLE_P1 = 0x75u, /**< read/write */ |
156 |
PCAL6524_LLD_CMD_SWITCHDEBOUNCECOUNT = 0x76u, /**< read/write */ |
157 |
} pcal6524_lld_cmd_t; |
158 |
|
159 |
/**
|
160 |
* @brief Input register bit values.
|
161 |
* @details The bits in the input register reflect the incoming logic levels per pin.
|
162 |
* If a pin is configured as ouput, the bit reflects th set value or is forced to 0 in case the outpus is configured as open-drain.
|
163 |
* If a pin is configured as input with latched interrupts, reading the according port will reset the input value and clear the interrupt.
|
164 |
*/
|
165 |
typedef enum { |
166 |
PCAL6524_LLD_INPUT_LOW = 0b0,
|
167 |
PCAL6524_LLD_INPUT_HIGH = 0b1,
|
168 |
} pcal6524_lld_input_t; |
169 |
|
170 |
/**
|
171 |
* @brief Output register bit values.
|
172 |
* @details Defines the logic level to be driven by output pins.
|
173 |
* The default value (after reset) is 0b1 (high),
|
174 |
*/
|
175 |
typedef enum { |
176 |
PCAL6524_LLD_OUTPUT_LOW = 0b0,
|
177 |
PCAL6524_LLD_OUTPUT_HIGH = 0b1,
|
178 |
} pcal6524_lld_output_t; |
179 |
|
180 |
/**
|
181 |
* @brief Polarity inversion register values.
|
182 |
* @details Allows to inverse the logic values written to the input register.
|
183 |
* The default value (after reset) is 0b0 (disabled).
|
184 |
*/
|
185 |
typedef enum { |
186 |
PCAL6524_LLD_POLARITYINVERSION_DISABLED = 0b0,
|
187 |
PCAL6524_LLD_POLARITYINVERSION_ENABLED = 0b1,
|
188 |
} pcal6524_lld_polarityinversion_t; |
189 |
|
190 |
/**
|
191 |
* @brief Configuration regsiter bit values.
|
192 |
* @details Configures the direction of the I/O pins to either high-impedance input or output.
|
193 |
* The default value (after reset) is 0b1 (input).
|
194 |
*/
|
195 |
typedef enum { |
196 |
PCAL6524_LLD_CONFIGURATION_INPUT = 0b1,
|
197 |
PCAL6524_LLD_CONFIGURATION_OUTPUT = 0b0,
|
198 |
} pcal6524_lld_configuration_t; |
199 |
|
200 |
/**
|
201 |
* @brief Output drive strength register mask values.
|
202 |
* @details Configures maximum current of output pins can be defined via a 2 bit mask per pin.
|
203 |
* Toggling multiple output pins simultaneously a peak current may induce noise to supply voltage and ground.
|
204 |
* By lowering the maximum current per pin. this effect can be minimized.
|
205 |
* The default value (after reset) is 0b11 (factor 1x)
|
206 |
*/
|
207 |
typedef enum { |
208 |
PCAL6524_LL_OUTPUTDRIVESTRENGTH_0_25 = 0b00,
|
209 |
PCAL6524_LL_OUTPUTDRIVESTRENGTH_0_5 = 0b01,
|
210 |
PCAL6524_LL_OUTPUTDRIVESTRENGTH_0_75 = 0b10,
|
211 |
PCAL6524_LL_OUTPUTDRIVESTRENGTH_1 = 0b11,
|
212 |
} pcal6524_lld_outputdrivestrength_t; |
213 |
|
214 |
/**
|
215 |
* @brief Input latch register bit values.
|
216 |
* @details Allows to latch interrupt and input states per pin, if an interrupt occurred.
|
217 |
* The default value (after reset) is 0b0 (disabled).
|
218 |
*/
|
219 |
typedef enum { |
220 |
PCAL6524_LLD_INPUTLATCH_ENABLED = 0b1,
|
221 |
PCAL6524_LLD_INPUTLATCH_DISABLED = 0b0,
|
222 |
} pcal6524_lld_inputlatch_t; |
223 |
|
224 |
/**
|
225 |
* @brief Pull-up/Pull-down enable register bis values.
|
226 |
* @details Configures per pin whether the pull-up/pull-down resistors shall be enabled.
|
227 |
* If a pin is configured as open-drain output, the setting in this register are overridden and the resistors are disconnected.
|
228 |
* The default value (after reset) is 0b0 (disabled).
|
229 |
*/
|
230 |
typedef enum { |
231 |
PCAL6524_LLD_PUPD_ENABLED = 0b1,
|
232 |
PCAL6524_LLD_PUPD_DISABLED = 0b0,
|
233 |
} pcal6524_lld_pupdenable_t; |
234 |
|
235 |
/**
|
236 |
* @brief Pull-up/Pull-dpwn selection register bit values.
|
237 |
* @details Selects between pull-up and pull-down resistor (100 kΩ) per pin.
|
238 |
* Has no effect if the according bit is the pull-up/pull-down enable register is disabled.
|
239 |
* The default value (after reset) is 0b1 (pull-up).
|
240 |
*/
|
241 |
typedef enum { |
242 |
PCAL6524_LLD_PUPDSELECTION_PULLUP = 0b1,
|
243 |
PCAL6524_LLD_PUPDSELECTION_PULLDOWN = 0b0,
|
244 |
} pcal6524_lld_pupdselection_t; |
245 |
|
246 |
/**
|
247 |
* @brief Interrupt mask register bit values.
|
248 |
* @details Allows to enable (value 0) or disable (value 1) interrupts per pin.
|
249 |
* The default value (after reset) is 0b1 (interrupt disabled).
|
250 |
*/
|
251 |
typedef enum { |
252 |
PCAL6524_LLD_INTERRUPTMASK_ENABLED = 0b0,
|
253 |
PCAL6524_LLD_INTERRUPTMASK_DSIABLED = 0b1,
|
254 |
} pcal6524_lld_interruptmask_t; |
255 |
|
256 |
/**
|
257 |
* @brief Interrupt status register bit value.
|
258 |
* @details Indicates whether an interrupt occurred per pin.
|
259 |
* After reset the register is initialized with 0b0 (no interrupt occurred yet).
|
260 |
*/
|
261 |
typedef enum { |
262 |
PCAL6524_LLD_INTERRUPTSTATUS_ACTIVE = 0b1,
|
263 |
PCAL6524_LLD_INTERRUPTSTATUS_INACTIVE = 0b0,
|
264 |
} pcal6542_lld_interruptstatus_t; |
265 |
|
266 |
/**
|
267 |
* @brief Output port configuration register mask of valid bits.
|
268 |
*/
|
269 |
#define PCAL6524_LLD_OUTPUTCONFIGURATION_MASK 0x07u |
270 |
|
271 |
/**
|
272 |
* @brief Output port configuration register mask for I/O port 0.
|
273 |
*/
|
274 |
#define PCAL6524_LLD_OUTPUTCONFIGURATION_MASK_PORT0 0x01u |
275 |
|
276 |
/**
|
277 |
* @brief Output port configuration register mask for I/O port 1.
|
278 |
*/
|
279 |
#define PCAL6524_LLD_OUTPUTCONFIGURATION_MASK_PORT1 0x02u |
280 |
|
281 |
/**
|
282 |
* @brief Output port configuration register mask for I/O port 2.
|
283 |
*/
|
284 |
#define PCAL6524_LLD_OUTPUTCONFIGURATION_MASK_PORT2 0x04u |
285 |
|
286 |
/**
|
287 |
* @brief Output port configuration register bit values.
|
288 |
* @details Configures all ouput pins per port to be push-pull or open-drain.
|
289 |
* The default value (after reset) is 0b0 (push-pull).
|
290 |
*/
|
291 |
typedef enum { |
292 |
PCAL6524_LLD_OUTPUTCONFIGURATION_PUSHPULL = 0b0,
|
293 |
PCAL6524_LLD_OUTPUTCONFIGURATION_OPENDRAIN = 0b1,
|
294 |
} pcal6524_lld_outputconfiguration_t; |
295 |
|
296 |
/**
|
297 |
* @brief Interrupt edge register mask values.
|
298 |
* @details Configures the type of event that would cause an interrupt per pin.
|
299 |
* The default value (after reset) is 0b00 (level triggered).
|
300 |
*/
|
301 |
typedef enum { |
302 |
PCAL6524_LLD_INTERRUPTEDGE_LEVELTRIGGERED = 0b00,
|
303 |
PCAL6524_LLD_INTERRUPTEDGE_RISINGEDGE = 0b01,
|
304 |
PCAL6524_LLD_INTERRUPTEDGE_FALLINGEDGE = 0b10,
|
305 |
PCAL6524_LLD_INTERRUPTEDGE_ANYEDGE = 0b11,
|
306 |
} pcal6524_lld_interruptedge_t; |
307 |
|
308 |
/**
|
309 |
* @brief Input status register bit values.
|
310 |
* @details Reflects the current logic level per pin similar to the input register.
|
311 |
* However, values are not latched and reading the register will not reset interrupts.
|
312 |
*/
|
313 |
typedef enum { |
314 |
PCAL6524_LLD_INPUTSTATUS_LOW = 0b0,
|
315 |
PCAL6524_LLD_INPUTSTATUS_HIGH = 0b1,
|
316 |
} pcal6524_lld_inputstatus_t; |
317 |
|
318 |
/**
|
319 |
* @brief Individual pin output configuration register bit values.
|
320 |
* @details Can be used to invert the port-wide push-pull/open-drain configuration via the ouput port configuration register per pin.
|
321 |
* the default value (after reset) is 0b0 (not inverted).
|
322 |
*/
|
323 |
typedef enum { |
324 |
PCAL6524_LLD_INDIVIDUALPINOUTPUTCONFIGURATION_PORT = 0b0,
|
325 |
PCAL6524_LLD_INDIVIDUALPINOUTPUTCONFIGURATION_INVERTED = 0b1,
|
326 |
} pcal6524_lld_individualpinoutputconfiguration_t; |
327 |
|
328 |
/**
|
329 |
* @brief Switch debounce enable register bit values.
|
330 |
* @details Allows to enable debounce functionality for I/O ports 0 and 1.
|
331 |
* In order to use the debounce feature, an oscillator signal must be applied to pin 0 of port 0.
|
332 |
* The default value (after reset) is 0b0 (disabled).
|
333 |
*/
|
334 |
typedef enum { |
335 |
PCAL6524_LLD_SWITCHDEBOUNCE_ENABLED = 0b1,
|
336 |
PCAL6524_LLD_SWITCHDEBOUNCE_DISABLED = 0b0,
|
337 |
} pcal6524_lld_switchdebounceenable_t; |
338 |
|
339 |
/******************************************************************************/
|
340 |
/* MACROS */
|
341 |
/******************************************************************************/
|
342 |
|
343 |
/******************************************************************************/
|
344 |
/* EXTERN DECLARATIONS */
|
345 |
/******************************************************************************/
|
346 |
|
347 |
#ifdef __cplusplus
|
348 |
extern "C" { |
349 |
#endif
|
350 |
uint8_t pcal6524_lld_cmd_groupsize(const pcal6524_lld_cmd_t cmd);
|
351 |
|
352 |
// apalExitStatus_t pcal6524_lld_read_id(const PCAL6524Driver* const pcal6524d, uint8_t* const data, const apalTime_t timeout);
|
353 |
apalExitStatus_t pcal6524_lld_read_reg(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, uint8_t* const data, const apalTime_t timeout); |
354 |
apalExitStatus_t pcal6524_lld_write_reg(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, const uint8_t data, const apalTime_t timeout); |
355 |
apalExitStatus_t pcal6524_lld_read_group(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, uint8_t* const data, const apalTime_t timeout); |
356 |
apalExitStatus_t pcal6524_lld_write_group(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, const uint8_t* const data, const apalTime_t timeout); |
357 |
apalExitStatus_t pcal6524_lld_read_continuous(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, uint8_t* const data, const uint8_t length, const apalTime_t timeout); |
358 |
apalExitStatus_t pcal6524_lld_write_continuous(const PCAL6524Driver* const pcal6524d, const pcal6524_lld_cmd_t reg, const uint8_t* const data, const uint8_t length, const apalTime_t timeout); |
359 |
#ifdef __cplusplus
|
360 |
} |
361 |
#endif
|
362 |
|
363 |
/******************************************************************************/
|
364 |
/* INLINE FUNCTIONS */
|
365 |
/******************************************************************************/
|
366 |
|
367 |
#endif /* defined(AMIROLLD_CFG_PCAL6524) && (AMIROLLD_CFG_PCAL6524 == 1) */ |
368 |
|
369 |
#endif /* AMIROLLD_PCAL6524_V1_H */ |
370 |
|
371 |
/** @} */
|