Maxim Integrated / MAX7300

Library for MAX7300 GPIO Expander

Dependents:   MAX14871_Shield

max7300.h@7:e75913818f75, 2016-05-12 (annotated)

Committer:
j3
Date:
Thu May 12 23:35:32 2016 +0000
Revision:
7:e75913818f75
Parent:
2:fd2de5d21702 
updated docs

Who changed what in which revision?

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j3 0:350a850a7191 1 /******************************************************************//**
j3 0:350a850a7191 2 * @file max7300.h
j3 0:350a850a7191 3 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
j3 0:350a850a7191 4 *
j3 0:350a850a7191 5 * Permission is hereby granted, free of charge, to any person obtaining a
j3 0:350a850a7191 6 * copy of this software and associated documentation files (the "Software"),
j3 0:350a850a7191 7 * to deal in the Software without restriction, including without limitation
j3 0:350a850a7191 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
j3 0:350a850a7191 9 * and/or sell copies of the Software, and to permit persons to whom the
j3 0:350a850a7191 10 * Software is furnished to do so, subject to the following conditions:
j3 0:350a850a7191 11 *
j3 0:350a850a7191 12 * The above copyright notice and this permission notice shall be included
j3 0:350a850a7191 13 * in all copies or substantial portions of the Software.
j3 0:350a850a7191 14 *
j3 0:350a850a7191 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
j3 0:350a850a7191 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
j3 0:350a850a7191 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
j3 0:350a850a7191 18 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
j3 0:350a850a7191 19 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
j3 0:350a850a7191 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
j3 0:350a850a7191 21 * OTHER DEALINGS IN THE SOFTWARE.
j3 0:350a850a7191 22 *
j3 0:350a850a7191 23 * Except as contained in this notice, the name of Maxim Integrated
j3 0:350a850a7191 24 * Products, Inc. shall not be used except as stated in the Maxim Integrated
j3 0:350a850a7191 25 * Products, Inc. Branding Policy.
j3 0:350a850a7191 26 *
j3 0:350a850a7191 27 * The mere transfer of this software does not imply any licenses
j3 0:350a850a7191 28 * of trade secrets, proprietary technology, copyrights, patents,
j3 0:350a850a7191 29 * trademarks, maskwork rights, or any other form of intellectual
j3 0:350a850a7191 30 * property whatsoever. Maxim Integrated Products, Inc. retains all
j3 0:350a850a7191 31 * ownership rights.
j3 0:350a850a7191 32 **********************************************************************/
j3 0:350a850a7191 33
j3 0:350a850a7191 34
j3 0:350a850a7191 35 #ifndef MAX7300_H
j3 0:350a850a7191 36 #define MAX7300_H
j3 0:350a850a7191 37
j3 0:350a850a7191 38 #include "mbed.h"
j3 0:350a850a7191 39
j3 0:350a850a7191 40
j3 7:e75913818f75 41 /**
j3 7:e75913818f75 42 * @brief 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or 28-Port I/O
j3 7:e75913818f75 43 * Expander
j3 7:e75913818f75 44 *
j3 7:e75913818f75 45 * @details The MAX7300 compact, serial-interfaced, I/O expansion
j3 7:e75913818f75 46 * peripheral provides microprocessors with up to 28 ports. Each port
j3 7:e75913818f75 47 * is individually user configurable to either a logic input or logic
j3 7:e75913818f75 48 * output.
j3 7:e75913818f75 49 * @code
j3 7:e75913818f75 50 * #include "mbed.h"
j3 7:e75913818f75 51 * #include "max7300.h"
j3 7:e75913818f75 52 *
j3 7:e75913818f75 53 * int main (void)
j3 7:e75913818f75 54 * {
j3 7:e75913818f75 55 * I2C i2c_bus(D14, D15);
j3 7:e75913818f75 56 *
j3 7:e75913818f75 57 * Max7300 io_expander(&i2c_bus, Max7300::MAX7300_I2C_ADRS0);
j3 7:e75913818f75 58 *
j3 7:e75913818f75 59 * for(uint8_t idx = 0; idx < 10; idx++)
j3 7:e75913818f75 60 * {
j3 7:e75913818f75 61 * //configure ports 12 - 21 as outputs
j3 7:e75913818f75 62 * io_expander.config_port((Max7300::max7300_port_number_t) (idx+12), Max7300::MAX7300_PORT_OUTPUT);
j3 7:e75913818f75 63 *
j3 7:e75913818f75 64 * //configure ports 22 - 31 as inputs
j3 7:e75913818f75 65 * io_expander.config_port((Max7300::max7300_port_number_t) (idx+22), Max7300::MAX7300_PORT_INPUT);
j3 7:e75913818f75 66 * }
j3 7:e75913818f75 67 *
j3 7:e75913818f75 68 * io_expander.enable_ports();
j3 7:e75913818f75 69 *
j3 7:e75913818f75 70 * //rest of application...
j3 7:e75913818f75 71 * }
j3 7:e75913818f75 72 * @endcode
j3 7:e75913818f75 73 */
j3 0:350a850a7191 74 class Max7300
j3 0:350a850a7191 75 {
j3 0:350a850a7191 76 public:
j3 0:350a850a7191 77
j3 7:e75913818f75 78 /**
j3 7:e75913818f75 79 * @brief Valid 7-bit I2C addresses
j3 7:e75913818f75 80 * @details 16 valid I2C addresses are possible through the
j3 7:e75913818f75 81 * connection od AD0 and AD1 to Vcc, GND, SDA, or SCL.
j3 7:e75913818f75 82 */
j3 0:350a850a7191 83 typedef enum
j3 0:350a850a7191 84 {
j3 0:350a850a7191 85 MAX7300_I2C_ADRS0 = 0x40,
j3 0:350a850a7191 86 MAX7300_I2C_ADRS1,
j3 0:350a850a7191 87 MAX7300_I2C_ADRS2,
j3 0:350a850a7191 88 MAX7300_I2C_ADRS3,
j3 0:350a850a7191 89 MAX7300_I2C_ADRS4,
j3 0:350a850a7191 90 MAX7300_I2C_ADRS5,
j3 0:350a850a7191 91 MAX7300_I2C_ADRS6,
j3 0:350a850a7191 92 MAX7300_I2C_ADRS7,
j3 0:350a850a7191 93 MAX7300_I2C_ADRS8,
j3 0:350a850a7191 94 MAX7300_I2C_ADRS9,
j3 0:350a850a7191 95 MAX7300_I2C_ADRS10,
j3 0:350a850a7191 96 MAX7300_I2C_ADRS11,
j3 0:350a850a7191 97 MAX7300_I2C_ADRS12,
j3 0:350a850a7191 98 MAX7300_I2C_ADRS13,
j3 0:350a850a7191 99 MAX7300_I2C_ADRS14,
j3 0:350a850a7191 100 MAX7300_I2C_ADRS15
j3 0:350a850a7191 101 }max7300_i2c_adrs_t;
j3 0:350a850a7191 102
j3 0:350a850a7191 103
j3 7:e75913818f75 104 /**
j3 7:e75913818f75 105 * @brief Valid port configurations
j3 7:e75913818f75 106 * @details Valid port configurations for the MAX7300 are;
j3 7:e75913818f75 107 * push-pull GPO, schmitt GPI, schmitt GPI with pull-up.
j3 7:e75913818f75 108 */
j3 0:350a850a7191 109 typedef enum
j3 0:350a850a7191 110 {
j3 0:350a850a7191 111 MAX7300_PORT_OUTPUT = 1,
j3 0:350a850a7191 112 MAX7300_PORT_INPUT,
j3 0:350a850a7191 113 MAX7300_PORT_INPUT_PULLUP
j3 0:350a850a7191 114 }max7300_port_type_t;
j3 0:350a850a7191 115
j3 0:350a850a7191 116
j3 7:e75913818f75 117 /**
j3 7:e75913818f75 118 * @brief Valid port numbers
j3 7:e75913818f75 119 * @details Simple enumeration of port numbers
j3 7:e75913818f75 120 */
j3 0:350a850a7191 121 typedef enum
j3 0:350a850a7191 122 {
j3 0:350a850a7191 123 MAX7300_PORT_04 = 4,
j3 0:350a850a7191 124 MAX7300_PORT_05,
j3 0:350a850a7191 125 MAX7300_PORT_06,
j3 0:350a850a7191 126 MAX7300_PORT_07,
j3 0:350a850a7191 127 MAX7300_PORT_08,
j3 0:350a850a7191 128 MAX7300_PORT_09,
j3 0:350a850a7191 129 MAX7300_PORT_10,
j3 0:350a850a7191 130 MAX7300_PORT_11,
j3 0:350a850a7191 131 MAX7300_PORT_12,
j3 0:350a850a7191 132 MAX7300_PORT_13,
j3 0:350a850a7191 133 MAX7300_PORT_14,
j3 0:350a850a7191 134 MAX7300_PORT_15,
j3 0:350a850a7191 135 MAX7300_PORT_16,
j3 0:350a850a7191 136 MAX7300_PORT_17,
j3 0:350a850a7191 137 MAX7300_PORT_18,
j3 0:350a850a7191 138 MAX7300_PORT_19,
j3 0:350a850a7191 139 MAX7300_PORT_20,
j3 0:350a850a7191 140 MAX7300_PORT_21,
j3 0:350a850a7191 141 MAX7300_PORT_22,
j3 0:350a850a7191 142 MAX7300_PORT_23,
j3 0:350a850a7191 143 MAX7300_PORT_24,
j3 0:350a850a7191 144 MAX7300_PORT_25,
j3 0:350a850a7191 145 MAX7300_PORT_26,
j3 0:350a850a7191 146 MAX7300_PORT_27,
j3 0:350a850a7191 147 MAX7300_PORT_28,
j3 0:350a850a7191 148 MAX7300_PORT_29,
j3 0:350a850a7191 149 MAX7300_PORT_30,
j3 0:350a850a7191 150 MAX7300_PORT_31
j3 0:350a850a7191 151 }max7300_port_number_t;
j3 0:350a850a7191 152
j3 0:350a850a7191 153
j3 0:350a850a7191 154 /**********************************************************//**
j3 0:350a850a7191 155 * @brief Constructor for Max7300 Class.
j3 0:350a850a7191 156 *
j3 0:350a850a7191 157 * @details Allows user to use existing I2C object
j3 0:350a850a7191 158 *
j3 0:350a850a7191 159 * On Entry:
j3 0:350a850a7191 160 * @param[in] i2c_bus - pointer to existing I2C object
j3 0:350a850a7191 161 * @param[in] i2c_adrs - 7-bit slave address of MAX7300
j3 0:350a850a7191 162 *
j3 0:350a850a7191 163 * On Exit:
j3 7:e75913818f75 164 *
j3 7:e75913818f75 165 * @return None
j3 0:350a850a7191 166 **************************************************************/
j3 0:350a850a7191 167 Max7300(I2C *i2c_bus, max7300_i2c_adrs_t i2c_adrs);
j3 0:350a850a7191 168
j3 0:350a850a7191 169
j3 0:350a850a7191 170 /**********************************************************//**
j3 0:350a850a7191 171 * @brief Constructor for Max7300 Class.
j3 0:350a850a7191 172 *
j3 0:350a850a7191 173 * @details Allows user to create a new I2C object if not
j3 0:350a850a7191 174 * already using one
j3 0:350a850a7191 175 *
j3 0:350a850a7191 176 * On Entry:
j3 0:350a850a7191 177 * @param[in] sda - sda pin of I2C bus
j3 0:350a850a7191 178 * @param[in] scl - scl pin of I2C bus
j3 0:350a850a7191 179 * @param[in] i2c_adrs - 7-bit slave address of MAX7300
j3 0:350a850a7191 180 *
j3 0:350a850a7191 181 * On Exit:
j3 7:e75913818f75 182 *
j3 7:e75913818f75 183 * @return None
j3 0:350a850a7191 184 **************************************************************/
j3 0:350a850a7191 185 Max7300(PinName sda, PinName scl, max7300_i2c_adrs_t i2c_adrs);
j3 0:350a850a7191 186
j3 0:350a850a7191 187
j3 0:350a850a7191 188 /**********************************************************//**
j3 0:350a850a7191 189 * @brief Default destructor for Max7300 Class.
j3 0:350a850a7191 190 *
j3 0:350a850a7191 191 * @details Destroys I2C object if owner
j3 0:350a850a7191 192 *
j3 0:350a850a7191 193 * On Entry:
j3 0:350a850a7191 194 *
j3 0:350a850a7191 195 * On Exit:
j3 7:e75913818f75 196 *
j3 7:e75913818f75 197 * @return None
j3 0:350a850a7191 198 **************************************************************/
j3 0:350a850a7191 199 ~Max7300();
j3 0:350a850a7191 200
j3 0:350a850a7191 201
j3 0:350a850a7191 202 /**********************************************************//**
j3 0:350a850a7191 203 * @brief Enables MAX7300 GPIO Ports
j3 0:350a850a7191 204 *
j3 0:350a850a7191 205 * @details Sets 'S' bit of configuration register
j3 0:350a850a7191 206 *
j3 0:350a850a7191 207 * On Entry:
j3 0:350a850a7191 208 *
j3 0:350a850a7191 209 * On Exit:
j3 7:e75913818f75 210 *
j3 7:e75913818f75 211 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 212 **************************************************************/
j3 0:350a850a7191 213 int16_t enable_ports(void);
j3 0:350a850a7191 214
j3 0:350a850a7191 215
j3 0:350a850a7191 216 /**********************************************************//**
j3 0:350a850a7191 217 * @brief Disables MAX7300 GPIO Ports
j3 0:350a850a7191 218 *
j3 0:350a850a7191 219 * @details Clears 'S' bit of configuration register
j3 0:350a850a7191 220 *
j3 0:350a850a7191 221 * On Entry:
j3 0:350a850a7191 222 *
j3 0:350a850a7191 223 * On Exit:
j3 7:e75913818f75 224 *
j3 7:e75913818f75 225 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 226 **************************************************************/
j3 0:350a850a7191 227 int16_t disable_ports(void);
j3 0:350a850a7191 228
j3 0:350a850a7191 229
j3 0:350a850a7191 230 /**********************************************************//**
j3 1:e1ee2549a047 231 * @brief Enables Transition Detection
j3 1:e1ee2549a047 232 *
j3 1:e1ee2549a047 233 * @details Sets 'M' bit of configuration register
j3 1:e1ee2549a047 234 *
j3 1:e1ee2549a047 235 * On Entry:
j3 1:e1ee2549a047 236 *
j3 1:e1ee2549a047 237 * On Exit:
j3 7:e75913818f75 238 *
j3 7:e75913818f75 239 * @return 0 on success, non-0 on failure
j3 1:e1ee2549a047 240 **************************************************************/
j3 1:e1ee2549a047 241 int16_t enable_transition_detection(void);
j3 1:e1ee2549a047 242
j3 1:e1ee2549a047 243
j3 1:e1ee2549a047 244 /**********************************************************//**
j3 1:e1ee2549a047 245 * @brief Disables Transition Detection
j3 1:e1ee2549a047 246 *
j3 1:e1ee2549a047 247 * @details Clears 'M' bit of configuration register
j3 1:e1ee2549a047 248 *
j3 1:e1ee2549a047 249 * On Entry:
j3 1:e1ee2549a047 250 *
j3 1:e1ee2549a047 251 * On Exit:
j3 7:e75913818f75 252 *
j3 7:e75913818f75 253 * @return 0 on success, non-0 on failure
j3 1:e1ee2549a047 254 **************************************************************/
j3 1:e1ee2549a047 255 int16_t disable_transition_detection(void);
j3 1:e1ee2549a047 256
j3 1:e1ee2549a047 257
j3 1:e1ee2549a047 258 /**********************************************************//**
j3 0:350a850a7191 259 * @brief Configures a single MAX7300 GPIO port
j3 0:350a850a7191 260 *
j3 0:350a850a7191 261 * @details Configures MAX7300 GPIO port as either an output,
j3 0:350a850a7191 262 * input, or input with pullup.
j3 0:350a850a7191 263 *
j3 0:350a850a7191 264 * On Entry:
j3 0:350a850a7191 265 * @param[in] port_num - GPIO port to configure
j3 0:350a850a7191 266 * @param[in] port_type - One of the following port types
j3 0:350a850a7191 267 * MAX7300_PORT_OUTPUT
j3 0:350a850a7191 268 * MAX7300_PORT_INPUT
j3 0:350a850a7191 269 * MAX7300_PORT_INPUT_PULLUP
j3 0:350a850a7191 270 *
j3 0:350a850a7191 271 * On Exit:
j3 7:e75913818f75 272 *
j3 7:e75913818f75 273 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 274 **************************************************************/
j3 0:350a850a7191 275 int16_t config_port(max7300_port_number_t port_num, max7300_port_type_t port_type);
j3 0:350a850a7191 276
j3 0:350a850a7191 277
j3 0:350a850a7191 278 /**********************************************************//**
j3 0:350a850a7191 279 * @brief Configure 4 MAX7300 GPIO ports
j3 0:350a850a7191 280 *
j3 0:350a850a7191 281 * @details Allows user to configure 4 ports at a time
j3 0:350a850a7191 282 *
j3 0:350a850a7191 283 * On Entry:
j3 1:e1ee2549a047 284 * @param[in] low_port - lowest of 4 ports to configure,
j3 1:e1ee2549a047 285 * on 4 port boundaries as in datasheet
j3 0:350a850a7191 286 *
j3 0:350a850a7191 287 * @param[in] data - Byte with each ports desired type with
j3 0:350a850a7191 288 * the following format - xx|xx|xx|xx
j3 0:350a850a7191 289 *
j3 0:350a850a7191 290 * On Exit:
j3 7:e75913818f75 291 *
j3 7:e75913818f75 292 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 293 **************************************************************/
j3 1:e1ee2549a047 294 int16_t config_4_ports(max7300_port_number_t low_port, uint8_t data);
j3 1:e1ee2549a047 295
j3 1:e1ee2549a047 296
j3 1:e1ee2549a047 297 /**********************************************************//**
j3 1:e1ee2549a047 298 * @brief Configures all MAX7300 GPIO ports
j3 1:e1ee2549a047 299 *
j3 1:e1ee2549a047 300 * @details Allows user to configure all ports to a single type
j3 1:e1ee2549a047 301 *
j3 1:e1ee2549a047 302 * On Entry:
j3 1:e1ee2549a047 303 * @param[in] port_type - One of the following port types
j3 1:e1ee2549a047 304 * MAX7300_PORT_OUTPUT
j3 1:e1ee2549a047 305 * MAX7300_PORT_INPUT
j3 1:e1ee2549a047 306 * MAX7300_PORT_INPUT_PULLUP
j3 1:e1ee2549a047 307 *
j3 1:e1ee2549a047 308 * On Exit:
j3 7:e75913818f75 309 *
j3 7:e75913818f75 310 * @return 0 on success, non-0 on failure
j3 1:e1ee2549a047 311 **************************************************************/
j3 1:e1ee2549a047 312 int16_t config_all_ports(max7300_port_type_t port_type);
j3 0:350a850a7191 313
j3 0:350a850a7191 314
j3 0:350a850a7191 315 /**********************************************************//**
j3 0:350a850a7191 316 * @brief Read a single MAX7300 GPIO port
j3 0:350a850a7191 317 *
j3 0:350a850a7191 318 * @details
j3 0:350a850a7191 319 *
j3 0:350a850a7191 320 * On Entry:
j3 1:e1ee2549a047 321 * @param[in] port_num - MAX7300 port number to read
j3 0:350a850a7191 322 *
j3 0:350a850a7191 323 * On Exit:
j3 7:e75913818f75 324 *
j3 7:e75913818f75 325 * @return State of port, or -1 on failure
j3 0:350a850a7191 326 **************************************************************/
j3 0:350a850a7191 327 int16_t read_port(max7300_port_number_t port_num);
j3 0:350a850a7191 328
j3 0:350a850a7191 329
j3 0:350a850a7191 330 /**********************************************************//**
j3 0:350a850a7191 331 * @brief Write a single MAX7300 GPIO port
j3 0:350a850a7191 332 *
j3 0:350a850a7191 333 * @details
j3 0:350a850a7191 334 *
j3 0:350a850a7191 335 * On Entry:
j3 1:e1ee2549a047 336 * @param[in] port_num - MAX7300 port to write
j3 1:e1ee2549a047 337 * @param[in] data - lsb of byte is written to port
j3 0:350a850a7191 338 *
j3 0:350a850a7191 339 * On Exit:
j3 7:e75913818f75 340 *
j3 7:e75913818f75 341 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 342 **************************************************************/
j3 0:350a850a7191 343 int16_t write_port(max7300_port_number_t port_num, uint8_t data);
j3 0:350a850a7191 344
j3 0:350a850a7191 345
j3 0:350a850a7191 346 /**********************************************************//**
j3 0:350a850a7191 347 * @brief Read 8 MAX7300 GPIO ports
j3 0:350a850a7191 348 *
j3 0:350a850a7191 349 * @details
j3 0:350a850a7191 350 *
j3 0:350a850a7191 351 * On Entry:
j3 1:e1ee2549a047 352 * @param[in] low_port - lowest port of 8 ports to read,
j3 1:e1ee2549a047 353 * on 8 port boundaries as in datasheet.
j3 1:e1ee2549a047 354 * Max is port 24
j3 0:350a850a7191 355 *
j3 0:350a850a7191 356 * On Exit:
j3 7:e75913818f75 357 *
j3 7:e75913818f75 358 * @return State of ports, or -1 on failure
j3 0:350a850a7191 359 **************************************************************/
j3 1:e1ee2549a047 360 int16_t read_8_ports(max7300_port_number_t low_port);
j3 0:350a850a7191 361
j3 0:350a850a7191 362
j3 0:350a850a7191 363 /**********************************************************//**
j3 0:350a850a7191 364 * @brief Write 8 MAX7300 GPIO ports
j3 0:350a850a7191 365 *
j3 0:350a850a7191 366 * @details
j3 0:350a850a7191 367 *
j3 0:350a850a7191 368 * On Entry:
j3 1:e1ee2549a047 369 * @param[in] low_port - lowest port of 8 ports to write,
j3 1:e1ee2549a047 370 * on 8 port boundaries as in datasheet.
j3 1:e1ee2549a047 371 * Max is port 24
j3 1:e1ee2549a047 372 *
j3 1:e1ee2549a047 373 * @param[in] data - Data is written to ports
j3 0:350a850a7191 374 *
j3 0:350a850a7191 375 * On Exit:
j3 7:e75913818f75 376 *
j3 7:e75913818f75 377 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 378 **************************************************************/
j3 1:e1ee2549a047 379 int16_t write_8_ports(max7300_port_number_t low_port, uint8_t data);
j3 1:e1ee2549a047 380
j3 1:e1ee2549a047 381
j3 1:e1ee2549a047 382 /**********************************************************//**
j3 1:e1ee2549a047 383 * @brief Read transition detection mask register
j3 1:e1ee2549a047 384 *
j3 1:e1ee2549a047 385 * @details See page 11 of DS, right hand side column, paragraph 2
j3 1:e1ee2549a047 386 * for details on one-shot event.
j3 1:e1ee2549a047 387 *
j3 1:e1ee2549a047 388 * On Entry:
j3 1:e1ee2549a047 389 * @param[in] enable_snapshot - true to re-enable transition
j3 1:e1ee2549a047 390 * detection
j3 1:e1ee2549a047 391 *
j3 1:e1ee2549a047 392 * On Exit:
j3 7:e75913818f75 393 *
j3 7:e75913818f75 394 * @return 0 on success, non-0 on failure
j3 1:e1ee2549a047 395 **************************************************************/
j3 1:e1ee2549a047 396 int16_t read_mask_register(bool enable_snapshot);
j3 0:350a850a7191 397
j3 0:350a850a7191 398
j3 0:350a850a7191 399 /**********************************************************//**
j3 1:e1ee2549a047 400 * @brief Write transition detection mask register
j3 0:350a850a7191 401 *
j3 1:e1ee2549a047 402 * @details Enables transition detection on Ports 30-24
j3 1:e1ee2549a047 403 *
j3 0:350a850a7191 404 *
j3 0:350a850a7191 405 * On Entry:
j3 1:e1ee2549a047 406 * @param[in] data - Bits to set
j3 0:350a850a7191 407 *
j3 0:350a850a7191 408 * On Exit:
j3 7:e75913818f75 409 *
j3 7:e75913818f75 410 * @return 0 on success, non-0 on failure
j3 0:350a850a7191 411 **************************************************************/
j3 1:e1ee2549a047 412 int16_t write_mask_register(uint8_t data);
j3 1:e1ee2549a047 413
j3 0:350a850a7191 414
j3 0:350a850a7191 415 private:
j3 0:350a850a7191 416
j3 0:350a850a7191 417 I2C *_p_i2c;
j3 0:350a850a7191 418 bool _i2c_owner;
j3 0:350a850a7191 419 uint8_t _w_adrs;
j3 0:350a850a7191 420 uint8_t _r_adrs;
j3 1:e1ee2549a047 421
j3 2:fd2de5d21702 422 int16_t write_config_register(bool set_clear, uint8_t data);
j3 1:e1ee2549a047 423
j3 0:350a850a7191 424 };
j3 0:350a850a7191 425 #endif /* MAX7300_H*/