Sean Smith / platform_drivers

bug fix: SS was not declared in the spi_write_and_read(.. function

platform_drivers.cpp@7:efb143ea4191, 2019-09-02 (annotated)

Committer:
ssmith73
Date:
Mon Sep 02 11:42:58 2019 +0000
Revision:
7:efb143ea4191
Parent:
6:38fa8ac6e43b 
Bugfix - SS is undeclared in the spi_write_and_read function

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ssmith73 1:10feea6e63a8 1 /***************************************************************************//**
ssmith73 1:10feea6e63a8 2 * @file platform_drivers.cpp
ssmith73 1:10feea6e63a8 3 * @brief Implementation of Generic Platform Drivers.
ssmith73 1:10feea6e63a8 4 * @author DBogdan (dragos.bogdan@analog.com)
ssmith73 1:10feea6e63a8 5 ********************************************************************************
ssmith73 1:10feea6e63a8 6 * Copyright 2017,2019(c) Analog Devices, Inc.
ssmith73 1:10feea6e63a8 7 *
ssmith73 1:10feea6e63a8 8 * All rights reserved.
ssmith73 1:10feea6e63a8 9 *
ssmith73 1:10feea6e63a8 10 * Redistribution and use in source and binary forms, with or without
ssmith73 1:10feea6e63a8 11 * modification, are permitted provided that the following conditions are met:
ssmith73 1:10feea6e63a8 12 * - Redistributions of source code must retain the above copyright
ssmith73 1:10feea6e63a8 13 * notice, this list of conditions and the following disclaimer.
ssmith73 1:10feea6e63a8 14 * - Redistributions in binary form must reproduce the above copyright
ssmith73 1:10feea6e63a8 15 * notice, this list of conditions and the following disclaimer in
ssmith73 1:10feea6e63a8 16 * the documentation and/or other materials provided with the
ssmith73 1:10feea6e63a8 17 * distribution.
ssmith73 1:10feea6e63a8 18 * - Neither the name of Analog Devices, Inc. nor the names of its
ssmith73 1:10feea6e63a8 19 * contributors may be used to endorse or promote products derived
ssmith73 1:10feea6e63a8 20 * from this software without specific prior written permission.
ssmith73 1:10feea6e63a8 21 * - The use of this software may or may not infringe the patent rights
ssmith73 1:10feea6e63a8 22 * of one or more patent holders. This license does not release you
ssmith73 1:10feea6e63a8 23 * from the requirement that you obtain separate licenses from these
ssmith73 1:10feea6e63a8 24 * patent holders to use this software.
ssmith73 1:10feea6e63a8 25 * - Use of the software either in source or binary form, must be run
ssmith73 1:10feea6e63a8 26 * on or directly connected to an Analog Devices Inc. component.
ssmith73 1:10feea6e63a8 27 *
ssmith73 1:10feea6e63a8 28 * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
ssmith73 1:10feea6e63a8 29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
ssmith73 1:10feea6e63a8 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ssmith73 1:10feea6e63a8 31 * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
ssmith73 1:10feea6e63a8 32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
ssmith73 1:10feea6e63a8 33 * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
ssmith73 1:10feea6e63a8 34 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ssmith73 1:10feea6e63a8 35 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ssmith73 1:10feea6e63a8 36 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ssmith73 1:10feea6e63a8 37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ssmith73 1:10feea6e63a8 38 *******************************************************************************/
ssmith73 1:10feea6e63a8 39
ssmith73 1:10feea6e63a8 40 /******************************************************************************/
ssmith73 1:10feea6e63a8 41 /***************************** Include Files **********************************/
ssmith73 1:10feea6e63a8 42 /******************************************************************************/
ssmith73 1:10feea6e63a8 43 #include <stdint.h>
ssmith73 1:10feea6e63a8 44 #include <mbed.h>
ssmith73 1:10feea6e63a8 45 #include "platform_drivers.h"
ssmith73 1:10feea6e63a8 46
ssmith73 1:10feea6e63a8 47 /**
ssmith73 1:10feea6e63a8 48 Provide implementations for the following extern functions.
ssmith73 1:10feea6e63a8 49 For Example - in main.cpp
ssmith73 6:38fa8ac6e43b 50 PinName slave_selects[8] = { SPI_CS, SPI_CSE };
ssmith73 1:10feea6e63a8 51 mbed::SPI spi(SPI_MOSI, SPI_MISO, SPI_SCK);
ssmith73 1:10feea6e63a8 52 mbed::I2C i2c(I2C_SDA, I2C_SCL);
ssmith73 1:10feea6e63a8 53 **/
ssmith73 6:38fa8ac6e43b 54
ssmith73 1:10feea6e63a8 55 extern SPI spi;
ssmith73 1:10feea6e63a8 56 extern I2C i2c;
ssmith73 6:38fa8ac6e43b 57 extern PinName slave_selects[MAX_SLAVE_SELECTS];
ssmith73 1:10feea6e63a8 58 /******************************************************************************/
ssmith73 1:10feea6e63a8 59 /************************ Functions Definitions *******************************/
ssmith73 1:10feea6e63a8 60 /******************************************************************************/
ssmith73 1:10feea6e63a8 61
ssmith73 1:10feea6e63a8 62 /**
ssmith73 1:10feea6e63a8 63 * @brief Initialize the I2C communication peripheral.
ssmith73 1:10feea6e63a8 64 * @param desc - The I2C descriptor.
ssmith73 1:10feea6e63a8 65 * @param param - The structure that contains the I2C parameters.
ssmith73 1:10feea6e63a8 66 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 67 */
ssmith73 1:10feea6e63a8 68 int32_t mbed_i2c_init(struct i2c_desc **desc,
ssmith73 1:10feea6e63a8 69 const struct i2c_init_param *param)
ssmith73 1:10feea6e63a8 70 {
ssmith73 1:10feea6e63a8 71 i2c_desc * new_desc = (i2c_desc*) malloc(sizeof(i2c_desc));
ssmith73 1:10feea6e63a8 72 new_desc->id = param->id;
ssmith73 1:10feea6e63a8 73 new_desc->slave_address = param->slave_address;
ssmith73 1:10feea6e63a8 74 new_desc->type = param->type;
ssmith73 1:10feea6e63a8 75
ssmith73 1:10feea6e63a8 76 *desc = new_desc;
ssmith73 1:10feea6e63a8 77
ssmith73 1:10feea6e63a8 78 return SUCCESS;
ssmith73 1:10feea6e63a8 79 }
ssmith73 1:10feea6e63a8 80
ssmith73 1:10feea6e63a8 81
ssmith73 1:10feea6e63a8 82 /**
ssmith73 1:10feea6e63a8 83 * @brief Free the resources allocated by i2c_init().
ssmith73 1:10feea6e63a8 84 * @param desc - The I2C descriptor.
ssmith73 1:10feea6e63a8 85 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 86 */
ssmith73 1:10feea6e63a8 87 int32_t i2c_remove(struct i2c_desc *desc)
ssmith73 1:10feea6e63a8 88 {
ssmith73 1:10feea6e63a8 89 if (desc) {
ssmith73 1:10feea6e63a8 90 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 91 }
ssmith73 1:10feea6e63a8 92
ssmith73 1:10feea6e63a8 93 return SUCCESS;
ssmith73 1:10feea6e63a8 94 }
ssmith73 1:10feea6e63a8 95
ssmith73 1:10feea6e63a8 96 /**
ssmith73 1:10feea6e63a8 97 * @brief Write data to a slave device.
ssmith73 1:10feea6e63a8 98 * @param desc - The I2C descriptor.
ssmith73 1:10feea6e63a8 99 * @param data - Buffer that stores the transmission data.
ssmith73 1:10feea6e63a8 100 * @param bytes_number - Number of bytes to write.
ssmith73 1:10feea6e63a8 101 * @param stop_bit - Stop condition control.
ssmith73 1:10feea6e63a8 102 * Example: 0 - A stop condition will not be generated;
ssmith73 1:10feea6e63a8 103 * 1 - A stop condition will be generated.
ssmith73 1:10feea6e63a8 104 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 105 */
ssmith73 1:10feea6e63a8 106
ssmith73 1:10feea6e63a8 107 int32_t mbed_i2c_write(struct i2c_desc *desc,
ssmith73 1:10feea6e63a8 108 uint8_t *data,
ssmith73 1:10feea6e63a8 109 uint8_t bytes_number,
ssmith73 1:10feea6e63a8 110 uint8_t stop_bit)
ssmith73 1:10feea6e63a8 111 {
ssmith73 1:10feea6e63a8 112 /**
ssmith73 1:10feea6e63a8 113 The MBED I2C API is reversed for parameter 4
ssmith73 1:10feea6e63a8 114 Instead of stop_bit - it has
ssmith73 1:10feea6e63a8 115 @param repeated - Repeated start, true - don't send stop at end default value is false.
ssmith73 1:10feea6e63a8 116 Inverting here to keep the no-OS/platform_drivers API
ssmith73 1:10feea6e63a8 117 */
ssmith73 2:996b477a1553 118 if(!(i2c.write(desc->slave_address , (char *)data, bytes_number, !stop_bit)))
ssmith73 2:996b477a1553 119 return SUCCESS;
ssmith73 2:996b477a1553 120 else
ssmith73 2:996b477a1553 121 return FAILURE;
ssmith73 1:10feea6e63a8 122 }
ssmith73 1:10feea6e63a8 123
ssmith73 1:10feea6e63a8 124 /**
ssmith73 1:10feea6e63a8 125 * @brief Read data from a slave device.
ssmith73 1:10feea6e63a8 126 * @param desc - The I2C descriptor.
ssmith73 1:10feea6e63a8 127 * @param data - Buffer that will store the received data.
ssmith73 1:10feea6e63a8 128 * @param bytes_number - Number of bytes to read.
ssmith73 1:10feea6e63a8 129 * @param stop_bit - Stop condition control.
ssmith73 1:10feea6e63a8 130 * Example: 0 - A stop condition will not be generated;
ssmith73 1:10feea6e63a8 131 * 1 - A stop condition will be generated.
ssmith73 1:10feea6e63a8 132 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 133 */
ssmith73 1:10feea6e63a8 134 int32_t mbed_i2c_read(struct i2c_desc *desc,
ssmith73 1:10feea6e63a8 135 uint8_t *data,
ssmith73 1:10feea6e63a8 136 uint8_t bytes_number,
ssmith73 1:10feea6e63a8 137 uint8_t stop_bit)
ssmith73 1:10feea6e63a8 138 {
ssmith73 1:10feea6e63a8 139 /**
ssmith73 1:10feea6e63a8 140 The MBED I2C API is reversed for parameter 4
ssmith73 1:10feea6e63a8 141 Instead of stop_bit - it has
ssmith73 1:10feea6e63a8 142 @param repeated - Repeated start, true - don't send stop at end default value is false.
ssmith73 1:10feea6e63a8 143 Inverting here to keep the no-OS/platform_drivers API
ssmith73 1:10feea6e63a8 144 */
ssmith73 2:996b477a1553 145 if(!(i2c.read(desc->slave_address, (char *)data, bytes_number, !stop_bit)))
ssmith73 2:996b477a1553 146 return SUCCESS;
ssmith73 2:996b477a1553 147 else
ssmith73 2:996b477a1553 148 return FAILURE;
ssmith73 1:10feea6e63a8 149 }
ssmith73 1:10feea6e63a8 150
ssmith73 1:10feea6e63a8 151 /**
ssmith73 1:10feea6e63a8 152 * @brief Initialize the SPI communication peripheral.
ssmith73 1:10feea6e63a8 153 * @param desc - The SPI descriptor.
ssmith73 1:10feea6e63a8 154 * @param init_param - The structure that contains the SPI parameters.
ssmith73 1:10feea6e63a8 155 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 156 */
ssmith73 1:10feea6e63a8 157 int32_t mbed_spi_init(struct spi_desc **desc,
ssmith73 1:10feea6e63a8 158 const struct spi_init_param *param)
ssmith73 1:10feea6e63a8 159 {
ssmith73 1:10feea6e63a8 160
ssmith73 1:10feea6e63a8 161 // Create the spi description object for the device
ssmith73 1:10feea6e63a8 162 spi_desc * new_desc = (spi_desc*) malloc(sizeof(*new_desc));
ssmith73 1:10feea6e63a8 163 new_desc->chip_select = param->chip_select;
ssmith73 1:10feea6e63a8 164 new_desc->mode = param->mode;
ssmith73 1:10feea6e63a8 165 new_desc->max_speed_hz = param->max_speed_hz;
ssmith73 1:10feea6e63a8 166 *desc = new_desc;
ssmith73 6:38fa8ac6e43b 167 //Create the DigitalOut object, based on user-defined chip-select
ssmith73 6:38fa8ac6e43b 168 DigitalOut SS(slave_selects[new_desc->chip_select]);
ssmith73 1:10feea6e63a8 169 spi.format(SEND_BYTE, param->mode); //Stick to byte-multiples
ssmith73 1:10feea6e63a8 170 /**
ssmith73 1:10feea6e63a8 171 NOTE: Actual frequency of SPI clk will be somewhat device
ssmith73 1:10feea6e63a8 172 dependent, relating to clock-settings, prescalars etc. If absolute
ssmith73 1:10feea6e63a8 173 SPI frequency is required, consult your device documentation.
ssmith73 1:10feea6e63a8 174 **/
ssmith73 1:10feea6e63a8 175 spi.frequency(param->max_speed_hz);
ssmith73 1:10feea6e63a8 176 spi.set_default_write_value(0x00); //code to write when reading back
ssmith73 1:10feea6e63a8 177 SS = GPIO_HIGH; //set SS high
ssmith73 1:10feea6e63a8 178
ssmith73 1:10feea6e63a8 179 return SUCCESS;
ssmith73 1:10feea6e63a8 180 }
ssmith73 1:10feea6e63a8 181
ssmith73 1:10feea6e63a8 182 /**
ssmith73 1:10feea6e63a8 183 * @brief Free the resources allocated by spi_init().
ssmith73 1:10feea6e63a8 184 * @param desc - The SPI descriptor.
ssmith73 1:10feea6e63a8 185 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 186 */
ssmith73 1:10feea6e63a8 187 int32_t spi_remove(struct spi_desc *desc)
ssmith73 1:10feea6e63a8 188 {
ssmith73 1:10feea6e63a8 189 if (desc) {
ssmith73 1:10feea6e63a8 190 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 191 }
ssmith73 1:10feea6e63a8 192
ssmith73 1:10feea6e63a8 193 return SUCCESS;
ssmith73 1:10feea6e63a8 194 }
ssmith73 1:10feea6e63a8 195
ssmith73 1:10feea6e63a8 196
ssmith73 1:10feea6e63a8 197 /**
ssmith73 1:10feea6e63a8 198 * @brief Write and read data to/from SPI.
ssmith73 1:10feea6e63a8 199 *
ssmith73 1:10feea6e63a8 200 * This function will be updated to improve performance
ssmith73 1:10feea6e63a8 201 *
ssmith73 1:10feea6e63a8 202 * @param desc - The SPI descriptor.
ssmith73 1:10feea6e63a8 203 * @param data - The buffer with the transmitted/received data.
ssmith73 1:10feea6e63a8 204 * @param bytes_number - Number of bytes to write/read.
ssmith73 1:10feea6e63a8 205 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 206 */
ssmith73 1:10feea6e63a8 207 int32_t spi_write_and_read(struct spi_desc *desc,
ssmith73 1:10feea6e63a8 208 uint8_t *data,
ssmith73 1:10feea6e63a8 209 uint8_t bytes_number)
ssmith73 1:10feea6e63a8 210 {
ssmith73 1:10feea6e63a8 211 if (desc) {
ssmith73 1:10feea6e63a8 212 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 213 }
ssmith73 7:efb143ea4191 214 //Create the DigitalOut object, based on user-defined chip-select
ssmith73 7:efb143ea4191 215 DigitalOut SS(slave_selects[desc->chip_select]);
ssmith73 1:10feea6e63a8 216
ssmith73 1:10feea6e63a8 217 SS = GPIO_LOW; //!select SS
ssmith73 1:10feea6e63a8 218 for(size_t byte = 0 ; byte < bytes_number ; byte++)
ssmith73 1:10feea6e63a8 219 {
MitchAD 4:7a997a86e5ea 220 data[byte] = spi.write(data[byte]);
ssmith73 1:10feea6e63a8 221 }
ssmith73 1:10feea6e63a8 222 SS = GPIO_HIGH; //!deselect SS
ssmith73 1:10feea6e63a8 223
ssmith73 1:10feea6e63a8 224 return SUCCESS;
ssmith73 1:10feea6e63a8 225 }
ssmith73 1:10feea6e63a8 226
ssmith73 1:10feea6e63a8 227 /**
ssmith73 1:10feea6e63a8 228 * @brief Obtain the GPIO decriptor.
ssmith73 1:10feea6e63a8 229 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 230 * @param gpio_number - The number of the GPIO.
ssmith73 1:10feea6e63a8 231 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 232 */
ssmith73 1:10feea6e63a8 233 int32_t gpio_get(struct gpio_desc **desc,
ssmith73 1:10feea6e63a8 234 gpio_desc init_values)
ssmith73 1:10feea6e63a8 235 {
ssmith73 1:10feea6e63a8 236 gpio_desc * new_gpio = new gpio_desc;
ssmith73 1:10feea6e63a8 237 new_gpio->id = init_values.id;
ssmith73 1:10feea6e63a8 238 new_gpio->number = init_values.number;
ssmith73 1:10feea6e63a8 239 new_gpio->pin = init_values.pin;
ssmith73 1:10feea6e63a8 240 new_gpio->type = init_values.type;
ssmith73 1:10feea6e63a8 241
ssmith73 1:10feea6e63a8 242 *desc = new_gpio;
ssmith73 1:10feea6e63a8 243
ssmith73 1:10feea6e63a8 244 return SUCCESS;
ssmith73 1:10feea6e63a8 245 }
ssmith73 1:10feea6e63a8 246
ssmith73 1:10feea6e63a8 247 /**
ssmith73 1:10feea6e63a8 248 * @brief Free the resources allocated by gpio_get().
ssmith73 1:10feea6e63a8 249 * @param desc - The SPI descriptor.
ssmith73 1:10feea6e63a8 250 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 251 */
ssmith73 1:10feea6e63a8 252 int32_t gpio_remove(struct gpio_desc *desc)
ssmith73 1:10feea6e63a8 253 {
ssmith73 1:10feea6e63a8 254 if (desc) {
ssmith73 1:10feea6e63a8 255 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 256 }
ssmith73 1:10feea6e63a8 257
ssmith73 1:10feea6e63a8 258 return SUCCESS;
ssmith73 1:10feea6e63a8 259 }
ssmith73 1:10feea6e63a8 260
ssmith73 1:10feea6e63a8 261 /**
ssmith73 1:10feea6e63a8 262 * @brief Enable the input direction of the specified GPIO.
ssmith73 1:10feea6e63a8 263 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 264 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 265 */
ssmith73 1:10feea6e63a8 266 int32_t gpio_direction_input(struct gpio_desc *desc)
ssmith73 1:10feea6e63a8 267 {
ssmith73 1:10feea6e63a8 268 //unnessary for MBED
ssmith73 1:10feea6e63a8 269 if(desc) { }
ssmith73 1:10feea6e63a8 270 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 271
ssmith73 1:10feea6e63a8 272 return 0;
ssmith73 1:10feea6e63a8 273 }
ssmith73 1:10feea6e63a8 274
ssmith73 1:10feea6e63a8 275 /**
ssmith73 1:10feea6e63a8 276 * @brief Enable the output direction of the specified GPIO.
ssmith73 1:10feea6e63a8 277 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 278 * @param value - The value.
ssmith73 1:10feea6e63a8 279 * Example: GPIO_HIGH
ssmith73 1:10feea6e63a8 280 * GPIO_LOW
ssmith73 1:10feea6e63a8 281 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 282 */
ssmith73 1:10feea6e63a8 283 int32_t gpio_direction_output(struct gpio_desc *desc,
ssmith73 1:10feea6e63a8 284 uint8_t value)
ssmith73 1:10feea6e63a8 285 {
ssmith73 1:10feea6e63a8 286 //unnessary for MBED ?
ssmith73 1:10feea6e63a8 287 if(desc) { }
ssmith73 1:10feea6e63a8 288 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 289
ssmith73 1:10feea6e63a8 290 return SUCCESS;
ssmith73 1:10feea6e63a8 291 }
ssmith73 1:10feea6e63a8 292
ssmith73 1:10feea6e63a8 293 /**
ssmith73 1:10feea6e63a8 294 * @brief Get the direction of the specified GPIO.
ssmith73 1:10feea6e63a8 295 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 296 * @param direction - The direction.
ssmith73 1:10feea6e63a8 297 * Example: GPIO_OUT
ssmith73 1:10feea6e63a8 298 * GPIO_IN
ssmith73 1:10feea6e63a8 299 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 300 */
ssmith73 1:10feea6e63a8 301 int32_t gpio_get_direction(struct gpio_desc *desc,
ssmith73 1:10feea6e63a8 302 uint8_t *direction)
ssmith73 1:10feea6e63a8 303 {
ssmith73 1:10feea6e63a8 304 if (desc) {
ssmith73 1:10feea6e63a8 305 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 306 }
ssmith73 1:10feea6e63a8 307
ssmith73 1:10feea6e63a8 308 if (direction) {
ssmith73 1:10feea6e63a8 309 // Unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 310 }
ssmith73 1:10feea6e63a8 311
ssmith73 1:10feea6e63a8 312 return SUCCESS;
ssmith73 1:10feea6e63a8 313 }
ssmith73 1:10feea6e63a8 314
ssmith73 1:10feea6e63a8 315 /**
ssmith73 1:10feea6e63a8 316 * @brief Set the value of the specified GPIO.
ssmith73 1:10feea6e63a8 317 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 318 * @param value - The value.
ssmith73 1:10feea6e63a8 319 * Example: GPIO_HIGH
ssmith73 1:10feea6e63a8 320 * GPIO_LOW
ssmith73 1:10feea6e63a8 321 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 322 */
ssmith73 1:10feea6e63a8 323 int32_t gpio_set_value(struct gpio_desc *desc,
ssmith73 1:10feea6e63a8 324 uint8_t value)
ssmith73 1:10feea6e63a8 325 {
ssmith73 1:10feea6e63a8 326 if (desc)
ssmith73 1:10feea6e63a8 327 DigitalOut(desc->pin, value);
ssmith73 1:10feea6e63a8 328 else
ssmith73 1:10feea6e63a8 329 return FAILURE;
ssmith73 1:10feea6e63a8 330
ssmith73 1:10feea6e63a8 331 return SUCCESS;
ssmith73 1:10feea6e63a8 332 }
ssmith73 1:10feea6e63a8 333
ssmith73 1:10feea6e63a8 334 /**
ssmith73 1:10feea6e63a8 335 * @brief Get the value of the specified GPIO.
ssmith73 1:10feea6e63a8 336 * @param desc - The GPIO descriptor.
ssmith73 1:10feea6e63a8 337 * @param value - The value.
ssmith73 1:10feea6e63a8 338 * Example: GPIO_HIGH
ssmith73 1:10feea6e63a8 339 * GPIO_LOW
ssmith73 1:10feea6e63a8 340 * @return SUCCESS in case of success, FAILURE otherwise.
ssmith73 1:10feea6e63a8 341 */
ssmith73 1:10feea6e63a8 342 int32_t gpio_get_value(struct gpio_desc *desc, uint8_t *value)
ssmith73 1:10feea6e63a8 343 {
ssmith73 1:10feea6e63a8 344 uint8_t returnVal = FAILURE;
ssmith73 1:10feea6e63a8 345 if (desc) {
ssmith73 1:10feea6e63a8 346 {
ssmith73 1:10feea6e63a8 347 DigitalIn gpio(desc->pin);
ssmith73 1:10feea6e63a8 348 *value = (uint8_t)gpio.read();
ssmith73 1:10feea6e63a8 349 *value = gpio;
ssmith73 1:10feea6e63a8 350 returnVal = gpio.is_connected() ? SUCCESS : FAILURE;
ssmith73 1:10feea6e63a8 351 }
ssmith73 1:10feea6e63a8 352
ssmith73 1:10feea6e63a8 353 return returnVal;
ssmith73 1:10feea6e63a8 354 }
ssmith73 1:10feea6e63a8 355 return FAILURE;
ssmith73 1:10feea6e63a8 356 }
ssmith73 1:10feea6e63a8 357
ssmith73 1:10feea6e63a8 358 /**
ssmith73 1:10feea6e63a8 359 * @brief Generate miliseconds delay.
ssmith73 1:10feea6e63a8 360 * @param msecs - Delay in miliseconds.
ssmith73 1:10feea6e63a8 361 * @return None.
ssmith73 1:10feea6e63a8 362 */
ssmith73 1:10feea6e63a8 363 void mdelay(uint32_t msecs)
ssmith73 1:10feea6e63a8 364 {
ssmith73 1:10feea6e63a8 365 if (msecs)
ssmith73 1:10feea6e63a8 366 {
ssmith73 1:10feea6e63a8 367 //unused variable - fix compiler warning
ssmith73 1:10feea6e63a8 368 }
ssmith73 1:10feea6e63a8 369 }