InetrfaceProducts NXP / PCAL955x

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   PCAL9555_Hello OM13082-JoyStick OM13082_LED OM13082-test ... more

PCAL9555/PCAL9555.h@1:fd7cfa821b6a, 2015-03-19 (annotated)

Committer:
nxp_ip
Date:
Thu Mar 19 02:21:57 2015 +0000
Revision:
1:fd7cfa821b6a
Parent:
0:6c9a51a50eea 
API document update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxp_ip 0:6c9a51a50eea 1 /** PCA(L)9555 16-bit I2C-bus GPIO expander
nxp_ip 0:6c9a51a50eea 2 *
nxp_ip 0:6c9a51a50eea 3 * An operation sample of PCA(L)9555, PCA9535 and PCA9539.
nxp_ip 0:6c9a51a50eea 4 * mbed accesses the PCAL9555 registers through I2C.
nxp_ip 0:6c9a51a50eea 5 *
nxp_ip 0:6c9a51a50eea 6 * @class PCAL9555
nxp_ip 0:6c9a51a50eea 7 * @author Akifumi (Tedd) OKANO, NXP Semiconductors
nxp_ip 1:fd7cfa821b6a 8 * @version 0.6
nxp_ip 1:fd7cfa821b6a 9 * @date 19-Mar-2015
nxp_ip 0:6c9a51a50eea 10 *
nxp_ip 0:6c9a51a50eea 11 * Released under the Apache 2 license
nxp_ip 0:6c9a51a50eea 12 *
nxp_ip 0:6c9a51a50eea 13 * About PCAL9555:
nxp_ip 0:6c9a51a50eea 14 * http://www.nxp.com/products/interface_and_connectivity/i2c/i2c_general_purpose_i_o/series/PCAL9555A.html
nxp_ip 0:6c9a51a50eea 15 */
nxp_ip 0:6c9a51a50eea 16
nxp_ip 0:6c9a51a50eea 17 #ifndef MBED_PCAL9555
nxp_ip 0:6c9a51a50eea 18 #define MBED_PCAL9555
nxp_ip 0:6c9a51a50eea 19
nxp_ip 0:6c9a51a50eea 20 #include "mbed.h"
nxp_ip 0:6c9a51a50eea 21 #include "PCAL955x.h"
nxp_ip 0:6c9a51a50eea 22 #include "CompGpioExpAPI.h"
nxp_ip 0:6c9a51a50eea 23
nxp_ip 0:6c9a51a50eea 24 /** PCAL9555 class
nxp_ip 0:6c9a51a50eea 25 *
nxp_ip 0:6c9a51a50eea 26 * This is a driver code for the Low-voltage 16-bit I2C-bus GPIO with Agile I/O.
nxp_ip 0:6c9a51a50eea 27 * This class provides interface for PCAL9555 operation.
nxp_ip 0:6c9a51a50eea 28 * Detail information is available on next URL.
nxp_ip 0:6c9a51a50eea 29 * http://www.nxp.com/products/interface_and_connectivity/i2c/i2c_general_purpose_i_o/series/PCAL9555A.html
nxp_ip 0:6c9a51a50eea 30 *
nxp_ip 0:6c9a51a50eea 31 * PCAL9555 library's basic IO operation is compatible to PCA9555, PCA9535 and PCA9539.
nxp_ip 0:6c9a51a50eea 32 * This library can be used for those GPIO expander chips also.
nxp_ip 1:fd7cfa821b6a 33 * Next sample code shows operation based on low-level-API (operated by just device instane)
nxp_ip 0:6c9a51a50eea 34 *
nxp_ip 0:6c9a51a50eea 35 * Example:
nxp_ip 0:6c9a51a50eea 36 * @code
nxp_ip 1:fd7cfa821b6a 37 * // GPIO-expander operation sample using a device instance
nxp_ip 1:fd7cfa821b6a 38 *
nxp_ip 0:6c9a51a50eea 39 * #include "mbed.h"
nxp_ip 0:6c9a51a50eea 40 * #include "PCAL9555.h"
nxp_ip 0:6c9a51a50eea 41 *
nxp_ip 0:6c9a51a50eea 42 * PCAL9555 gpio( p28, p27, 0xE8 ); // using PCA9539
nxp_ip 0:6c9a51a50eea 43 *
nxp_ip 0:6c9a51a50eea 44 * int main() {
nxp_ip 0:6c9a51a50eea 45 * gpio.configure( 0xFFFF ); // Set all pins: input
nxp_ip 0:6c9a51a50eea 46 * printf( " 0x%04X\r\n", (int)gpio );// Print pins state
nxp_ip 0:6c9a51a50eea 47 *
nxp_ip 0:6c9a51a50eea 48 * gpio.configure( 0x0000 ); // Set all pins: output
nxp_ip 0:6c9a51a50eea 49 * int count = 0;
nxp_ip 0:6c9a51a50eea 50 * while(1) {
nxp_ip 0:6c9a51a50eea 51 * gpio.write( count++ );
nxp_ip 0:6c9a51a50eea 52 * }
nxp_ip 0:6c9a51a50eea 53 * }
nxp_ip 0:6c9a51a50eea 54 * @endcode
nxp_ip 0:6c9a51a50eea 55 *
nxp_ip 0:6c9a51a50eea 56 * GpioDigitalInOut, GpioDigitalOut, GpioDigitalIn,
nxp_ip 0:6c9a51a50eea 57 * GpioBusInOut, GpioBusOut and GpioBusIn API class are available also.
nxp_ip 1:fd7cfa821b6a 58 * For those high-level-API details, please find those class library page.
nxp_ip 1:fd7cfa821b6a 59 * The GpioDigital* and GpioBus* APIs can be used like next sample code.
nxp_ip 0:6c9a51a50eea 60 *
nxp_ip 0:6c9a51a50eea 61 * @code
nxp_ip 1:fd7cfa821b6a 62 * // GPIO-expander operation sample using high-level-API
nxp_ip 1:fd7cfa821b6a 63 *
nxp_ip 0:6c9a51a50eea 64 * #include "mbed.h"
nxp_ip 0:6c9a51a50eea 65 * #include "PCAL9555.h"
nxp_ip 0:6c9a51a50eea 66 *
nxp_ip 0:6c9a51a50eea 67 * PCAL9555 gpio( p28, p27, 0xE8 ); // using PCA9539
nxp_ip 0:6c9a51a50eea 68 *
nxp_ip 0:6c9a51a50eea 69 * // The GPIO pins are grouped in some groups and operated as bus I/O
nxp_ip 0:6c9a51a50eea 70 * GpioBusIn bus_in( gpio, X0_0, X0_1, X0_2, X0_3 );
nxp_ip 0:6c9a51a50eea 71 * GpioBusOut bus_out( gpio, X0_4, X0_5, X0_6 );
nxp_ip 0:6c9a51a50eea 72 * GpioBusInOut bus_io( gpio, X1_7, X1_6, X1_5, X1_4, X1_3, X1_2, X1_1, X1_0 );
nxp_ip 0:6c9a51a50eea 73 * GpioDigitalOut myled( gpio, X0_7 );
nxp_ip 0:6c9a51a50eea 74 *
nxp_ip 0:6c9a51a50eea 75 * int main() {
nxp_ip 0:6c9a51a50eea 76 * bus_io.input();
nxp_ip 0:6c9a51a50eea 77 * printf( "I/O = 0x%02X\r\n", (int)bus_io );
nxp_ip 0:6c9a51a50eea 78 * printf( "In = 0x%01X\r\n", (int)bus_in );
nxp_ip 0:6c9a51a50eea 79 *
nxp_ip 0:6c9a51a50eea 80 * bus_io.output();
nxp_ip 0:6c9a51a50eea 81 *
nxp_ip 0:6c9a51a50eea 82 * int count = 0;
nxp_ip 0:6c9a51a50eea 83 * while(1) {
nxp_ip 0:6c9a51a50eea 84 * bus_out = count;
nxp_ip 0:6c9a51a50eea 85 * bus_io = count;
nxp_ip 0:6c9a51a50eea 86 * myled = count & 0x1;
nxp_ip 0:6c9a51a50eea 87 * count++;
nxp_ip 0:6c9a51a50eea 88 * wait( 0.1 );
nxp_ip 0:6c9a51a50eea 89 * }
nxp_ip 0:6c9a51a50eea 90 * }
nxp_ip 0:6c9a51a50eea 91 * @endcode
nxp_ip 0:6c9a51a50eea 92 */
nxp_ip 0:6c9a51a50eea 93
nxp_ip 0:6c9a51a50eea 94 class PCAL9555 : public PCAL955x
nxp_ip 0:6c9a51a50eea 95 {
nxp_ip 0:6c9a51a50eea 96 public:
nxp_ip 0:6c9a51a50eea 97 /** Name of the PCAL9555 registers */
nxp_ip 0:6c9a51a50eea 98 enum command_reg {
nxp_ip 1:fd7cfa821b6a 99 InputPort0 = 0x00, /**< InputPort0 register */
nxp_ip 1:fd7cfa821b6a 100 InputPort1, /**< InputPort1 register */
nxp_ip 1:fd7cfa821b6a 101 OutoutPort0, /**< OutoutPort0 register */
nxp_ip 1:fd7cfa821b6a 102 OutoutPort1, /**< OutoutPort1 register */
nxp_ip 1:fd7cfa821b6a 103 PolarityInversionPort0, /**< PolarityInversionPort0 register */
nxp_ip 1:fd7cfa821b6a 104 PolarityInversionPort1, /**< PolarityInversionPort1 register */
nxp_ip 1:fd7cfa821b6a 105 ConfigurationPort0, /**< ConfigurationPort0 register */
nxp_ip 1:fd7cfa821b6a 106 ConfigurationPort1, /**< ConfigurationPort1 register */
nxp_ip 1:fd7cfa821b6a 107 OutputDriveStrength0_0 = 0x40, /**< OutputDriveStrength0_0 register */
nxp_ip 1:fd7cfa821b6a 108 OutputDriveStrength0_1, /**< OutputDriveStrength0_1 register */
nxp_ip 1:fd7cfa821b6a 109 OutputDriveStrength1_0, /**< OutputDriveStrength1_0 register */
nxp_ip 1:fd7cfa821b6a 110 OutputDriveStrength1_1, /**< OutputDriveStrength1_1 register */
nxp_ip 1:fd7cfa821b6a 111 InputLatch0, /**< InputLatch0 register */
nxp_ip 1:fd7cfa821b6a 112 InputLatch1, /**< InputLatch1 register */
nxp_ip 1:fd7cfa821b6a 113 PullUpPullDowmEnable0, /**< PullUpPullDowmEnable0 register */
nxp_ip 1:fd7cfa821b6a 114 PullUpPullDowmEnable1, /**< PullUpPullDowmEnable1 register */
nxp_ip 1:fd7cfa821b6a 115 PullUpPullDowmSelection0, /**< PullUpPullDowmSelection0 register */
nxp_ip 1:fd7cfa821b6a 116 PullUpPullDowmSelection1, /**< PullUpPullDowmSelection1 register */
nxp_ip 1:fd7cfa821b6a 117 InterruptMask0, /**< InterruptMask0 register */
nxp_ip 1:fd7cfa821b6a 118 InterruptMask1, /**< InterruptMask1 register */
nxp_ip 1:fd7cfa821b6a 119 InterruptStatus0, /**< InterruptStatus0 register */
nxp_ip 1:fd7cfa821b6a 120 InterruptStatus1, /**< InterruptStatus1 register */
nxp_ip 1:fd7cfa821b6a 121 OutputPortConfiguration = 0x4F, /**< OutputPortConfiguration register */
nxp_ip 0:6c9a51a50eea 122 };
nxp_ip 0:6c9a51a50eea 123
nxp_ip 1:fd7cfa821b6a 124 #if DOXYGEN_ONLY
nxp_ip 1:fd7cfa821b6a 125 /** GPIO-Expander pin names
nxp_ip 1:fd7cfa821b6a 126 * for when the high-level APIs
nxp_ip 1:fd7cfa821b6a 127 * (GpioDigitalOut, GpioDigitalInOut, GpioDigitalIn,
nxp_ip 1:fd7cfa821b6a 128 * GpioBusOut, GpioBusInOut are GpioBusIn) are used
nxp_ip 1:fd7cfa821b6a 129 */
nxp_ip 1:fd7cfa821b6a 130 typedef enum {
nxp_ip 1:fd7cfa821b6a 131 X0_0, /**< P0_0 pin */
nxp_ip 1:fd7cfa821b6a 132 X0_1, /**< P0_1 pin */
nxp_ip 1:fd7cfa821b6a 133 X0_2, /**< P0_2 pin */
nxp_ip 1:fd7cfa821b6a 134 X0_3, /**< P0_3 pin */
nxp_ip 1:fd7cfa821b6a 135 X0_4, /**< P0_4 pin */
nxp_ip 1:fd7cfa821b6a 136 X0_5, /**< P0_5 pin */
nxp_ip 1:fd7cfa821b6a 137 X0_6, /**< P0_6 pin */
nxp_ip 1:fd7cfa821b6a 138 X0_7, /**< P0_7 pin */
nxp_ip 1:fd7cfa821b6a 139 X1_0, /**< P1_0 pin */
nxp_ip 1:fd7cfa821b6a 140 X1_1, /**< P1_1 pin */
nxp_ip 1:fd7cfa821b6a 141 X1_2, /**< P1_2 pin */
nxp_ip 1:fd7cfa821b6a 142 X1_3, /**< P1_3 pin */
nxp_ip 1:fd7cfa821b6a 143 X1_4, /**< P1_4 pin */
nxp_ip 1:fd7cfa821b6a 144 X1_5, /**< P1_5 pin */
nxp_ip 1:fd7cfa821b6a 145 X1_6, /**< P1_6 pin */
nxp_ip 1:fd7cfa821b6a 146 X1_7, /**< P1_7 pin */
nxp_ip 1:fd7cfa821b6a 147 X0 = X0_0, /**< P0_0 pin */
nxp_ip 1:fd7cfa821b6a 148 X1 = X0_1, /**< P0_1 pin */
nxp_ip 1:fd7cfa821b6a 149 X2 = X0_2, /**< P0_2 pin */
nxp_ip 1:fd7cfa821b6a 150 X3 = X0_3, /**< P0_3 pin */
nxp_ip 1:fd7cfa821b6a 151 X4 = X0_4, /**< P0_4 pin */
nxp_ip 1:fd7cfa821b6a 152 X5 = X0_5, /**< P0_5 pin */
nxp_ip 1:fd7cfa821b6a 153 X6 = X0_6, /**< P0_6 pin */
nxp_ip 1:fd7cfa821b6a 154 X7 = X0_7, /**< P0_7 pin */
nxp_ip 1:fd7cfa821b6a 155 X8 = X1_0, /**< P1_0 pin */
nxp_ip 1:fd7cfa821b6a 156 X9 = X1_1, /**< P1_1 pin */
nxp_ip 1:fd7cfa821b6a 157 X10 = X1_2, /**< P1_2 pin */
nxp_ip 1:fd7cfa821b6a 158 X11 = X1_3, /**< P1_3 pin */
nxp_ip 1:fd7cfa821b6a 159 X12 = X1_4, /**< P1_4 pin */
nxp_ip 1:fd7cfa821b6a 160 X13 = X1_5, /**< P1_5 pin */
nxp_ip 1:fd7cfa821b6a 161 X14 = X1_6, /**< P1_6 pin */
nxp_ip 1:fd7cfa821b6a 162 X15 = X1_7, /**< P1_7 pin */
nxp_ip 1:fd7cfa821b6a 163
nxp_ip 1:fd7cfa821b6a 164 X_NC = ~0x0L /**< for when the pin is left no-connection */
nxp_ip 1:fd7cfa821b6a 165 } GpioPinName;
nxp_ip 1:fd7cfa821b6a 166 #endif
nxp_ip 1:fd7cfa821b6a 167
nxp_ip 0:6c9a51a50eea 168 /** Create a PCAL9555 instance connected to specified I2C pins with specified address
nxp_ip 0:6c9a51a50eea 169 *
nxp_ip 0:6c9a51a50eea 170 * @param i2c_sda I2C-bus SDA pin
nxp_ip 0:6c9a51a50eea 171 * @param i2c_sda I2C-bus SCL pin
nxp_ip 0:6c9a51a50eea 172 * @param i2c_address I2C-bus address (default: 0x40)
nxp_ip 0:6c9a51a50eea 173 */
nxp_ip 0:6c9a51a50eea 174 PCAL9555( PinName i2c_sda, PinName i2c_scl, char i2c_address = PCAL955x::DEFAULT_I2C_ADDR );
nxp_ip 0:6c9a51a50eea 175
nxp_ip 0:6c9a51a50eea 176 /** Create a PCAL9555 instance connected to specified I2C pins with specified address
nxp_ip 0:6c9a51a50eea 177 *
nxp_ip 0:6c9a51a50eea 178 * @param i2c_obj I2C object (instance)
nxp_ip 0:6c9a51a50eea 179 * @param i2c_address I2C-bus address (default: 0x40)
nxp_ip 0:6c9a51a50eea 180 */
nxp_ip 0:6c9a51a50eea 181 PCAL9555( I2C &i2c_obj, char i2c_address = PCAL955x::DEFAULT_I2C_ADDR );
nxp_ip 0:6c9a51a50eea 182
nxp_ip 0:6c9a51a50eea 183 /** Destractor
nxp_ip 0:6c9a51a50eea 184 */
nxp_ip 0:6c9a51a50eea 185 virtual ~PCAL9555();
nxp_ip 0:6c9a51a50eea 186
nxp_ip 0:6c9a51a50eea 187 /** Returns the number of I/O pins
nxp_ip 0:6c9a51a50eea 188 *
nxp_ip 0:6c9a51a50eea 189 * @returns
nxp_ip 0:6c9a51a50eea 190 * The number of I/O pins
nxp_ip 0:6c9a51a50eea 191 */
nxp_ip 0:6c9a51a50eea 192 virtual int number_of_pins( void );
nxp_ip 0:6c9a51a50eea 193
nxp_ip 0:6c9a51a50eea 194 #if DOXYGEN_ONLY
nxp_ip 0:6c9a51a50eea 195
nxp_ip 0:6c9a51a50eea 196 /** Set output port bits
nxp_ip 0:6c9a51a50eea 197 *
nxp_ip 0:6c9a51a50eea 198 * @param bit_pattern 16-bit output pattern for port1 and port0.
nxp_ip 0:6c9a51a50eea 199 *
nxp_ip 0:6c9a51a50eea 200 * @note
nxp_ip 0:6c9a51a50eea 201 * The data for pins, given as integer.
nxp_ip 0:6c9a51a50eea 202 * The 16-bit MSB goes to P1_7 pin and LSB goes to P0_0 pin.
nxp_ip 0:6c9a51a50eea 203 * Data will not come out from the pin if it is configured as input.
nxp_ip 0:6c9a51a50eea 204 *
nxp_ip 0:6c9a51a50eea 205 * @see configure()
nxp_ip 0:6c9a51a50eea 206 */
nxp_ip 0:6c9a51a50eea 207 void write( int bit_pattern );
nxp_ip 0:6c9a51a50eea 208
nxp_ip 0:6c9a51a50eea 209 /** Read pin states
nxp_ip 0:6c9a51a50eea 210 *
nxp_ip 0:6c9a51a50eea 211 * @return
nxp_ip 0:6c9a51a50eea 212 * 16-bit pattern from port1 and port0.
nxp_ip 0:6c9a51a50eea 213 *
nxp_ip 0:6c9a51a50eea 214 * @note
nxp_ip 0:6c9a51a50eea 215 * The data from pins, given as integer.
nxp_ip 0:6c9a51a50eea 216 * The 16-bit port data comes from IO pins, P1_7 as MSB, P0_0 as LSB.
nxp_ip 0:6c9a51a50eea 217 * Data cannot be read if the port is configured as output.
nxp_ip 0:6c9a51a50eea 218 *
nxp_ip 0:6c9a51a50eea 219 * @see configure()
nxp_ip 0:6c9a51a50eea 220 */
nxp_ip 0:6c9a51a50eea 221 int read( void );
nxp_ip 0:6c9a51a50eea 222
nxp_ip 0:6c9a51a50eea 223 /** Polarity setting
nxp_ip 0:6c9a51a50eea 224 *
nxp_ip 0:6c9a51a50eea 225 * @param bit_pattern 16-bit polarity setting pattern for port1 and port0.
nxp_ip 0:6c9a51a50eea 226 * If the bit is set to '1', the state will be inverted.
nxp_ip 0:6c9a51a50eea 227 * (Default state is all '0')
nxp_ip 0:6c9a51a50eea 228 *
nxp_ip 0:6c9a51a50eea 229 * @see configure()
nxp_ip 0:6c9a51a50eea 230 */
nxp_ip 0:6c9a51a50eea 231 void polarity( int bit_pattern );
nxp_ip 0:6c9a51a50eea 232
nxp_ip 0:6c9a51a50eea 233 /** Set IO congiguration
nxp_ip 0:6c9a51a50eea 234 *
nxp_ip 0:6c9a51a50eea 235 * @param bit_pattern 16-bit IO direction setting pattern for port1 and port0.
nxp_ip 0:6c9a51a50eea 236 *
nxp_ip 0:6c9a51a50eea 237 * @note
nxp_ip 0:6c9a51a50eea 238 * The data for pins, given as integer.
nxp_ip 0:6c9a51a50eea 239 * The 16-bit MSB goes to P1_7 pin and LSB goes to P0_0 pin.
nxp_ip 0:6c9a51a50eea 240 * If the bit is set to '1', the pin will be input.
nxp_ip 0:6c9a51a50eea 241 *
nxp_ip 0:6c9a51a50eea 242 * @see write()
nxp_ip 0:6c9a51a50eea 243 * @see read()
nxp_ip 0:6c9a51a50eea 244 */
nxp_ip 0:6c9a51a50eea 245 void configure( int bit_pattern );
nxp_ip 0:6c9a51a50eea 246
nxp_ip 0:6c9a51a50eea 247 /** Set interrupt mask
nxp_ip 0:6c9a51a50eea 248 *
nxp_ip 0:6c9a51a50eea 249 * @param bit_pattern 16-bit interrupt mask
nxp_ip 0:6c9a51a50eea 250 *
nxp_ip 0:6c9a51a50eea 251 * @see interrupt_status()
nxp_ip 0:6c9a51a50eea 252 */
nxp_ip 0:6c9a51a50eea 253 void interrupt_mask( int bit_pattern );
nxp_ip 0:6c9a51a50eea 254
nxp_ip 0:6c9a51a50eea 255 /** Read interrupt status
nxp_ip 0:6c9a51a50eea 256 *
nxp_ip 0:6c9a51a50eea 257 * @return
nxp_ip 0:6c9a51a50eea 258 * 16-bit data from interrupt status registers
nxp_ip 0:6c9a51a50eea 259 *
nxp_ip 0:6c9a51a50eea 260 * @see interrupt_status()
nxp_ip 0:6c9a51a50eea 261 */
nxp_ip 0:6c9a51a50eea 262 int interrupt_status( void );
nxp_ip 0:6c9a51a50eea 263
nxp_ip 0:6c9a51a50eea 264 /** A shorthand for read()
nxp_ip 0:6c9a51a50eea 265 */
nxp_ip 0:6c9a51a50eea 266 operator int( void );
nxp_ip 0:6c9a51a50eea 267
nxp_ip 0:6c9a51a50eea 268 #endif
nxp_ip 0:6c9a51a50eea 269
nxp_ip 0:6c9a51a50eea 270 /** Write 16-bit data into registers
nxp_ip 0:6c9a51a50eea 271 *
nxp_ip 0:6c9a51a50eea 272 * @param reg_index Direst access to registers.
nxp_ip 0:6c9a51a50eea 273 * The registers can be referenced by regiser index
nxp_ip 0:6c9a51a50eea 274 * @param data 16-bit data. Data will be written into two 8-bit registers
nxp_ip 0:6c9a51a50eea 275 */
nxp_ip 0:6c9a51a50eea 276 virtual void reg_index_write( char register_index, int data );
nxp_ip 0:6c9a51a50eea 277
nxp_ip 0:6c9a51a50eea 278 /** Read 16-bit data from registers
nxp_ip 0:6c9a51a50eea 279 *
nxp_ip 0:6c9a51a50eea 280 * @param reg_index Direst access to registers.
nxp_ip 0:6c9a51a50eea 281 * The registers can be referenced by regiser index
nxp_ip 0:6c9a51a50eea 282 *
nxp_ip 0:6c9a51a50eea 283 * @return
nxp_ip 0:6c9a51a50eea 284 * 16-bit data from two registers.
nxp_ip 0:6c9a51a50eea 285 * The register which has lower address will be upper 8-bit data.
nxp_ip 0:6c9a51a50eea 286 */
nxp_ip 0:6c9a51a50eea 287 virtual int reg_index_read( char register_index );
nxp_ip 0:6c9a51a50eea 288
nxp_ip 0:6c9a51a50eea 289 /** A shorthand for write()
nxp_ip 0:6c9a51a50eea 290 */
nxp_ip 0:6c9a51a50eea 291 PCAL9555& operator= ( int bit_pattern );
nxp_ip 0:6c9a51a50eea 292 PCAL9555& operator= ( PCAL9555& rhs );
nxp_ip 0:6c9a51a50eea 293
nxp_ip 0:6c9a51a50eea 294 private:
nxp_ip 0:6c9a51a50eea 295 /** Register index name */
nxp_ip 0:6c9a51a50eea 296 enum RegisterIndex {
nxp_ip 0:6c9a51a50eea 297 InputPort = InputPort0,
nxp_ip 0:6c9a51a50eea 298 OutoutPort = OutoutPort0,
nxp_ip 0:6c9a51a50eea 299 PolarityInversionPort = PolarityInversionPort0,
nxp_ip 0:6c9a51a50eea 300 ConfigurationPort = ConfigurationPort0,
nxp_ip 0:6c9a51a50eea 301 OutputDriveStrength0 = OutputDriveStrength0_0,
nxp_ip 0:6c9a51a50eea 302 OutputDriveStrength1 = OutputDriveStrength1_0,
nxp_ip 0:6c9a51a50eea 303 InputLatch = InputLatch0,
nxp_ip 0:6c9a51a50eea 304 PullUpPullDowmEnable = PullUpPullDowmEnable0,
nxp_ip 0:6c9a51a50eea 305 PullUpPullDowmSelection = PullUpPullDowmSelection0,
nxp_ip 0:6c9a51a50eea 306 InterruptMask = InterruptMask0,
nxp_ip 0:6c9a51a50eea 307 InterruptStatus = InterruptStatus0
nxp_ip 0:6c9a51a50eea 308 };
nxp_ip 0:6c9a51a50eea 309
nxp_ip 0:6c9a51a50eea 310 static const char regmap[];
nxp_ip 0:6c9a51a50eea 311 const int n_of_pins;
nxp_ip 0:6c9a51a50eea 312 }
nxp_ip 0:6c9a51a50eea 313 ;
nxp_ip 0:6c9a51a50eea 314
nxp_ip 0:6c9a51a50eea 315 #endif // MBED_PCAL9555