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Drivers/BSP/STM32746G-Discovery/stm32746g_discovery_eeprom.c@8:56384bddaba5, 2017-02-23 (annotated)

Committer:
Jerome Coutant
Date:
Thu Feb 23 14:14:09 2017 +0100
Revision:
8:56384bddaba5
Parent:
6:e1d9da7fe856 
STM32Cube_FW_F7_V1.6.0 BSP_DISCO_F746NG

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 6:e1d9da7fe856 1 /**
bcostm 6:e1d9da7fe856 2 ******************************************************************************
bcostm 6:e1d9da7fe856 3 * @file stm32746g_discovery_eeprom.c
bcostm 6:e1d9da7fe856 4 * @author MCD Application Team
Jerome Coutant 8:56384bddaba5 5 * @version V2.0.0
Jerome Coutant 8:56384bddaba5 6 * @date 30-December-2016
bcostm 6:e1d9da7fe856 7 * @brief This file provides a set of functions needed to manage an I2C M24LR64
bcostm 6:e1d9da7fe856 8 * EEPROM memory.
bcostm 6:e1d9da7fe856 9 @verbatim
bcostm 6:e1d9da7fe856 10 To be able to use this driver, the switch EE_M24LR64 must be defined
bcostm 6:e1d9da7fe856 11 in your toolchain compiler preprocessor
bcostm 6:e1d9da7fe856 12
bcostm 6:e1d9da7fe856 13 ===================================================================
bcostm 6:e1d9da7fe856 14 Notes:
bcostm 6:e1d9da7fe856 15 - The I2C EEPROM memory (M24LR64) is available on separate daughter
bcostm 6:e1d9da7fe856 16 board ANT7-M24LR-A, which is not provided with the STM32746G_DISCOVERY
bcostm 6:e1d9da7fe856 17 board.
bcostm 6:e1d9da7fe856 18 To use this driver you have to connect the ANT7-M24LR-A to CN3
bcostm 6:e1d9da7fe856 19 connector of STM32746G_DISCOVERY board.
bcostm 6:e1d9da7fe856 20 ===================================================================
bcostm 6:e1d9da7fe856 21
bcostm 6:e1d9da7fe856 22 It implements a high level communication layer for read and write
bcostm 6:e1d9da7fe856 23 from/to this memory. The needed STM32F7xx hardware resources (I2C and
bcostm 6:e1d9da7fe856 24 GPIO) are defined in stm32746g_discovery.h file, and the initialization is
bcostm 6:e1d9da7fe856 25 performed in EEPROM_IO_Init() function declared in stm32746g_discovery.c
bcostm 6:e1d9da7fe856 26 file.
bcostm 6:e1d9da7fe856 27 You can easily tailor this driver to any other development board,
bcostm 6:e1d9da7fe856 28 by just adapting the defines for hardware resources and
bcostm 6:e1d9da7fe856 29 EEPROM_IO_Init() function.
bcostm 6:e1d9da7fe856 30
bcostm 6:e1d9da7fe856 31 @note In this driver, basic read and write functions (BSP_EEPROM_ReadBuffer()
bcostm 6:e1d9da7fe856 32 and BSP_EEPROM_WritePage()) use DMA mode to perform the data
bcostm 6:e1d9da7fe856 33 transfer to/from EEPROM memory.
bcostm 6:e1d9da7fe856 34
bcostm 6:e1d9da7fe856 35 @note Regarding BSP_EEPROM_WritePage(), it is an optimized function to perform
bcostm 6:e1d9da7fe856 36 small write (less than 1 page) BUT the number of bytes (combined to write start address) must not
bcostm 6:e1d9da7fe856 37 cross the EEPROM page boundary. This function can only writes into
bcostm 6:e1d9da7fe856 38 the boundaries of an EEPROM page.
bcostm 6:e1d9da7fe856 39 This function doesn't check on boundaries condition (in this driver
bcostm 6:e1d9da7fe856 40 the function BSP_EEPROM_WriteBuffer() which calls BSP_EEPROM_WritePage() is
bcostm 6:e1d9da7fe856 41 responsible of checking on Page boundaries).
bcostm 6:e1d9da7fe856 42
bcostm 6:e1d9da7fe856 43
bcostm 6:e1d9da7fe856 44 +-----------------------------------------------------------------+
bcostm 6:e1d9da7fe856 45 | Pin assignment for M24LR64 EEPROM |
bcostm 6:e1d9da7fe856 46 +---------------------------------------+-----------+-------------+
bcostm 6:e1d9da7fe856 47 | STM32F7xx I2C Pins | EEPROM | Pin |
bcostm 6:e1d9da7fe856 48 +---------------------------------------+-----------+-------------+
bcostm 6:e1d9da7fe856 49 | . | E0(GND) | 1 (0V) |
bcostm 6:e1d9da7fe856 50 | . | AC0 | 2 |
bcostm 6:e1d9da7fe856 51 | . | AC1 | 3 |
bcostm 6:e1d9da7fe856 52 | . | VSS | 4 (0V) |
bcostm 6:e1d9da7fe856 53 | SDA | SDA | 5 |
bcostm 6:e1d9da7fe856 54 | SCL | SCL | 6 |
bcostm 6:e1d9da7fe856 55 | . | E1(GND) | 7 (0V) |
bcostm 6:e1d9da7fe856 56 | . | VDD | 8 (3.3V) |
bcostm 6:e1d9da7fe856 57 +---------------------------------------+-----------+-------------+
bcostm 6:e1d9da7fe856 58 @endverbatim
bcostm 6:e1d9da7fe856 59 ******************************************************************************
bcostm 6:e1d9da7fe856 60 * @attention
bcostm 6:e1d9da7fe856 61 *
bcostm 6:e1d9da7fe856 62 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
bcostm 6:e1d9da7fe856 63 *
bcostm 6:e1d9da7fe856 64 * Redistribution and use in source and binary forms, with or without modification,
bcostm 6:e1d9da7fe856 65 * are permitted provided that the following conditions are met:
bcostm 6:e1d9da7fe856 66 * 1. Redistributions of source code must retain the above copyright notice,
bcostm 6:e1d9da7fe856 67 * this list of conditions and the following disclaimer.
bcostm 6:e1d9da7fe856 68 * 2. Redistributions in binary form must reproduce the above copyright notice,
bcostm 6:e1d9da7fe856 69 * this list of conditions and the following disclaimer in the documentation
bcostm 6:e1d9da7fe856 70 * and/or other materials provided with the distribution.
bcostm 6:e1d9da7fe856 71 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bcostm 6:e1d9da7fe856 72 * may be used to endorse or promote products derived from this software
bcostm 6:e1d9da7fe856 73 * without specific prior written permission.
bcostm 6:e1d9da7fe856 74 *
bcostm 6:e1d9da7fe856 75 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bcostm 6:e1d9da7fe856 76 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bcostm 6:e1d9da7fe856 77 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bcostm 6:e1d9da7fe856 78 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bcostm 6:e1d9da7fe856 79 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bcostm 6:e1d9da7fe856 80 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bcostm 6:e1d9da7fe856 81 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bcostm 6:e1d9da7fe856 82 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bcostm 6:e1d9da7fe856 83 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bcostm 6:e1d9da7fe856 84 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bcostm 6:e1d9da7fe856 85 *
bcostm 6:e1d9da7fe856 86 ******************************************************************************
bcostm 6:e1d9da7fe856 87 */
bcostm 6:e1d9da7fe856 88 /* Includes ------------------------------------------------------------------*/
bcostm 6:e1d9da7fe856 89 #include "stm32746g_discovery_eeprom.h"
bcostm 6:e1d9da7fe856 90
bcostm 6:e1d9da7fe856 91 /** @addtogroup BSP
bcostm 6:e1d9da7fe856 92 * @{
bcostm 6:e1d9da7fe856 93 */
bcostm 6:e1d9da7fe856 94
bcostm 6:e1d9da7fe856 95 /** @addtogroup STM32746G_DISCOVERY
bcostm 6:e1d9da7fe856 96 * @{
bcostm 6:e1d9da7fe856 97 */
bcostm 6:e1d9da7fe856 98
bcostm 6:e1d9da7fe856 99 /** @addtogroup STM32746G_DISCOVERY_EEPROM
bcostm 6:e1d9da7fe856 100 * @brief This file includes the I2C EEPROM driver of STM32746G-Discovery board.
bcostm 6:e1d9da7fe856 101 * @{
bcostm 6:e1d9da7fe856 102 */
bcostm 6:e1d9da7fe856 103
bcostm 6:e1d9da7fe856 104 /** @defgroup STM32746G_DISCOVERY_EEPROM_Private_Types STM32746G_DISCOVERY_EEPROM Private Types
bcostm 6:e1d9da7fe856 105 * @{
bcostm 6:e1d9da7fe856 106 */
bcostm 6:e1d9da7fe856 107 /**
bcostm 6:e1d9da7fe856 108 * @}
bcostm 6:e1d9da7fe856 109 */
bcostm 6:e1d9da7fe856 110
bcostm 6:e1d9da7fe856 111 /** @defgroup STM32746G_DISCOVERY_EEPROM_Private_Defines STM32746G_DISCOVERY_EEPROM Private Defines
bcostm 6:e1d9da7fe856 112 * @{
bcostm 6:e1d9da7fe856 113 */
bcostm 6:e1d9da7fe856 114 /**
bcostm 6:e1d9da7fe856 115 * @}
bcostm 6:e1d9da7fe856 116 */
bcostm 6:e1d9da7fe856 117
bcostm 6:e1d9da7fe856 118 /** @defgroup STM32746G_DISCOVERY_EEPROM_Private_Macros STM32746G_DISCOVERY_EEPROM Private Macros
bcostm 6:e1d9da7fe856 119 * @{
bcostm 6:e1d9da7fe856 120 */
bcostm 6:e1d9da7fe856 121 /**
bcostm 6:e1d9da7fe856 122 * @}
bcostm 6:e1d9da7fe856 123 */
bcostm 6:e1d9da7fe856 124
bcostm 6:e1d9da7fe856 125 /** @defgroup STM32746G_DISCOVERY_EEPROM_Private_Variables STM32746G_DISCOVERY_EEPROM Private Variables
bcostm 6:e1d9da7fe856 126 * @{
bcostm 6:e1d9da7fe856 127 */
bcostm 6:e1d9da7fe856 128 __IO uint16_t EEPROMAddress = 0;
bcostm 6:e1d9da7fe856 129 __IO uint16_t EEPROMDataRead;
bcostm 6:e1d9da7fe856 130 __IO uint8_t EEPROMDataWrite;
bcostm 6:e1d9da7fe856 131 /**
bcostm 6:e1d9da7fe856 132 * @}
bcostm 6:e1d9da7fe856 133 */
bcostm 6:e1d9da7fe856 134
bcostm 6:e1d9da7fe856 135 /** @defgroup STM32746G_DISCOVERY_EEPROM_Private_Function_Prototypes STM32746G_DISCOVERY_EEPROM Private Function Prototypes
bcostm 6:e1d9da7fe856 136 * @{
bcostm 6:e1d9da7fe856 137 */
bcostm 6:e1d9da7fe856 138 /**
bcostm 6:e1d9da7fe856 139 * @}
bcostm 6:e1d9da7fe856 140 */
bcostm 6:e1d9da7fe856 141
bcostm 6:e1d9da7fe856 142 /** @defgroup STM32746G_DISCOVERY_EEPROM_Exported_Functions STM32746G_DISCOVERY_EEPROM Exported Functions
bcostm 6:e1d9da7fe856 143 * @{
bcostm 6:e1d9da7fe856 144 */
bcostm 6:e1d9da7fe856 145
bcostm 6:e1d9da7fe856 146 /**
bcostm 6:e1d9da7fe856 147 * @brief Initializes peripherals used by the I2C EEPROM driver.
bcostm 6:e1d9da7fe856 148 *
bcostm 6:e1d9da7fe856 149 * @note There are 2 different versions of M24LR64 (A01 & A02).
bcostm 6:e1d9da7fe856 150 * Then try to connect on 1st one (EEPROM_I2C_ADDRESS_A01)
bcostm 6:e1d9da7fe856 151 * and if problem, check the 2nd one (EEPROM_I2C_ADDRESS_A02)
bcostm 6:e1d9da7fe856 152 * @retval EEPROM_OK (0) if operation is correctly performed, else return value
bcostm 6:e1d9da7fe856 153 * different from EEPROM_OK (0)
bcostm 6:e1d9da7fe856 154 */
bcostm 6:e1d9da7fe856 155 uint32_t BSP_EEPROM_Init(void)
bcostm 6:e1d9da7fe856 156 {
bcostm 6:e1d9da7fe856 157 /* I2C Initialization */
bcostm 6:e1d9da7fe856 158 EEPROM_IO_Init();
bcostm 6:e1d9da7fe856 159
bcostm 6:e1d9da7fe856 160 /* Select the EEPROM address for A01 and check if OK */
bcostm 6:e1d9da7fe856 161 EEPROMAddress = EEPROM_I2C_ADDRESS_A01;
bcostm 6:e1d9da7fe856 162 if(EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
bcostm 6:e1d9da7fe856 163 {
bcostm 6:e1d9da7fe856 164 /* Select the EEPROM address for A02 and check if OK */
bcostm 6:e1d9da7fe856 165 EEPROMAddress = EEPROM_I2C_ADDRESS_A02;
bcostm 6:e1d9da7fe856 166 if(EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
bcostm 6:e1d9da7fe856 167 {
bcostm 6:e1d9da7fe856 168 return EEPROM_FAIL;
bcostm 6:e1d9da7fe856 169 }
bcostm 6:e1d9da7fe856 170 }
bcostm 6:e1d9da7fe856 171 return EEPROM_OK;
bcostm 6:e1d9da7fe856 172 }
bcostm 6:e1d9da7fe856 173
bcostm 6:e1d9da7fe856 174 /**
bcostm 6:e1d9da7fe856 175 * @brief DeInitializes the EEPROM.
bcostm 6:e1d9da7fe856 176 * @retval EEPROM state
bcostm 6:e1d9da7fe856 177 */
bcostm 6:e1d9da7fe856 178 uint8_t BSP_EEPROM_DeInit(void)
bcostm 6:e1d9da7fe856 179 {
bcostm 6:e1d9da7fe856 180 /* I2C won't be disabled because common to other functionalities */
bcostm 6:e1d9da7fe856 181 return EEPROM_OK;
bcostm 6:e1d9da7fe856 182 }
bcostm 6:e1d9da7fe856 183
bcostm 6:e1d9da7fe856 184 /**
bcostm 6:e1d9da7fe856 185 * @brief Reads a block of data from the EEPROM.
bcostm 6:e1d9da7fe856 186 * @param pBuffer: pointer to the buffer that receives the data read from
bcostm 6:e1d9da7fe856 187 * the EEPROM.
bcostm 6:e1d9da7fe856 188 * @param ReadAddr: EEPROM's internal address to start reading from.
bcostm 6:e1d9da7fe856 189 * @param NumByteToRead: pointer to the variable holding number of bytes to
bcostm 6:e1d9da7fe856 190 * be read from the EEPROM.
bcostm 6:e1d9da7fe856 191 *
bcostm 6:e1d9da7fe856 192 * @note The variable pointed by NumByteToRead is reset to 0 when all the
bcostm 6:e1d9da7fe856 193 * data are read from the EEPROM. Application should monitor this
bcostm 6:e1d9da7fe856 194 * variable in order know when the transfer is complete.
bcostm 6:e1d9da7fe856 195 *
bcostm 6:e1d9da7fe856 196 * @retval EEPROM_OK (0) if operation is correctly performed, else return value
bcostm 6:e1d9da7fe856 197 * different from EEPROM_OK (0) or the timeout user callback.
bcostm 6:e1d9da7fe856 198 */
bcostm 6:e1d9da7fe856 199 uint32_t BSP_EEPROM_ReadBuffer(uint8_t* pBuffer, uint16_t ReadAddr, uint16_t* NumByteToRead)
bcostm 6:e1d9da7fe856 200 {
bcostm 6:e1d9da7fe856 201 uint32_t buffersize = *NumByteToRead;
bcostm 6:e1d9da7fe856 202
bcostm 6:e1d9da7fe856 203 /* Set the pointer to the Number of data to be read. This pointer will be used
bcostm 6:e1d9da7fe856 204 by the DMA Transfer Completer interrupt Handler in order to reset the
bcostm 6:e1d9da7fe856 205 variable to 0. User should check on this variable in order to know if the
bcostm 6:e1d9da7fe856 206 DMA transfer has been complete or not. */
bcostm 6:e1d9da7fe856 207 EEPROMDataRead = *NumByteToRead;
bcostm 6:e1d9da7fe856 208
bcostm 6:e1d9da7fe856 209 if(EEPROM_IO_ReadData(EEPROMAddress, ReadAddr, pBuffer, buffersize) != HAL_OK)
bcostm 6:e1d9da7fe856 210 {
bcostm 6:e1d9da7fe856 211 BSP_EEPROM_TIMEOUT_UserCallback();
bcostm 6:e1d9da7fe856 212 return EEPROM_FAIL;
bcostm 6:e1d9da7fe856 213 }
bcostm 6:e1d9da7fe856 214
bcostm 6:e1d9da7fe856 215 /* If all operations OK, return EEPROM_OK (0) */
bcostm 6:e1d9da7fe856 216 return EEPROM_OK;
bcostm 6:e1d9da7fe856 217 }
bcostm 6:e1d9da7fe856 218
bcostm 6:e1d9da7fe856 219 /**
bcostm 6:e1d9da7fe856 220 * @brief Writes more than one byte to the EEPROM with a single WRITE cycle.
bcostm 6:e1d9da7fe856 221 *
bcostm 6:e1d9da7fe856 222 * @note The number of bytes (combined to write start address) must not
bcostm 6:e1d9da7fe856 223 * cross the EEPROM page boundary. This function can only write into
bcostm 6:e1d9da7fe856 224 * the boundaries of an EEPROM page.
bcostm 6:e1d9da7fe856 225 * This function doesn't check on boundaries condition (in this driver
bcostm 6:e1d9da7fe856 226 * the function BSP_EEPROM_WriteBuffer() which calls BSP_EEPROM_WritePage() is
bcostm 6:e1d9da7fe856 227 * responsible of checking on Page boundaries).
bcostm 6:e1d9da7fe856 228 *
bcostm 6:e1d9da7fe856 229 * @param pBuffer: pointer to the buffer containing the data to be written to
bcostm 6:e1d9da7fe856 230 * the EEPROM.
bcostm 6:e1d9da7fe856 231 * @param WriteAddr: EEPROM's internal address to write to.
bcostm 6:e1d9da7fe856 232 * @param NumByteToWrite: pointer to the variable holding number of bytes to
bcostm 6:e1d9da7fe856 233 * be written into the EEPROM.
bcostm 6:e1d9da7fe856 234 *
bcostm 6:e1d9da7fe856 235 * @note The variable pointed by NumByteToWrite is reset to 0 when all the
bcostm 6:e1d9da7fe856 236 * data are written to the EEPROM. Application should monitor this
bcostm 6:e1d9da7fe856 237 * variable in order know when the transfer is complete.
bcostm 6:e1d9da7fe856 238 *
bcostm 6:e1d9da7fe856 239 * @note This function just configure the communication and enable the DMA
bcostm 6:e1d9da7fe856 240 * channel to transfer data. Meanwhile, the user application may perform
bcostm 6:e1d9da7fe856 241 * other tasks in parallel.
bcostm 6:e1d9da7fe856 242 *
bcostm 6:e1d9da7fe856 243 * @retval EEPROM_OK (0) if operation is correctly performed, else return value
bcostm 6:e1d9da7fe856 244 * different from EEPROM_OK (0) or the timeout user callback.
bcostm 6:e1d9da7fe856 245 */
bcostm 6:e1d9da7fe856 246 uint32_t BSP_EEPROM_WritePage(uint8_t* pBuffer, uint16_t WriteAddr, uint8_t* NumByteToWrite)
bcostm 6:e1d9da7fe856 247 {
bcostm 6:e1d9da7fe856 248 uint32_t buffersize = *NumByteToWrite;
bcostm 6:e1d9da7fe856 249 uint32_t status = EEPROM_OK;
bcostm 6:e1d9da7fe856 250
bcostm 6:e1d9da7fe856 251 /* Set the pointer to the Number of data to be written. This pointer will be used
bcostm 6:e1d9da7fe856 252 by the DMA Transfer Completer interrupt Handler in order to reset the
bcostm 6:e1d9da7fe856 253 variable to 0. User should check on this variable in order to know if the
bcostm 6:e1d9da7fe856 254 DMA transfer has been complete or not. */
bcostm 6:e1d9da7fe856 255 EEPROMDataWrite = *NumByteToWrite;
bcostm 6:e1d9da7fe856 256
bcostm 6:e1d9da7fe856 257 if(EEPROM_IO_WriteData(EEPROMAddress, WriteAddr, pBuffer, buffersize) != HAL_OK)
bcostm 6:e1d9da7fe856 258 {
bcostm 6:e1d9da7fe856 259 BSP_EEPROM_TIMEOUT_UserCallback();
bcostm 6:e1d9da7fe856 260 status = EEPROM_FAIL;
bcostm 6:e1d9da7fe856 261 }
bcostm 6:e1d9da7fe856 262
bcostm 6:e1d9da7fe856 263 if(BSP_EEPROM_WaitEepromStandbyState() != EEPROM_OK)
bcostm 6:e1d9da7fe856 264 {
bcostm 6:e1d9da7fe856 265 return EEPROM_FAIL;
bcostm 6:e1d9da7fe856 266 }
bcostm 6:e1d9da7fe856 267
bcostm 6:e1d9da7fe856 268 /* If all operations OK, return EEPROM_OK (0) */
bcostm 6:e1d9da7fe856 269 return status;
bcostm 6:e1d9da7fe856 270 }
bcostm 6:e1d9da7fe856 271
bcostm 6:e1d9da7fe856 272 /**
bcostm 6:e1d9da7fe856 273 * @brief Writes buffer of data to the I2C EEPROM.
bcostm 6:e1d9da7fe856 274 * @param pBuffer: pointer to the buffer containing the data to be written
bcostm 6:e1d9da7fe856 275 * to the EEPROM.
bcostm 6:e1d9da7fe856 276 * @param WriteAddr: EEPROM's internal address to write to.
bcostm 6:e1d9da7fe856 277 * @param NumByteToWrite: number of bytes to write to the EEPROM.
bcostm 6:e1d9da7fe856 278 * @retval EEPROM_OK (0) if operation is correctly performed, else return value
bcostm 6:e1d9da7fe856 279 * different from EEPROM_OK (0) or the timeout user callback.
bcostm 6:e1d9da7fe856 280 */
bcostm 6:e1d9da7fe856 281 uint32_t BSP_EEPROM_WriteBuffer(uint8_t *pBuffer, uint16_t WriteAddr, uint16_t NumByteToWrite)
bcostm 6:e1d9da7fe856 282 {
bcostm 6:e1d9da7fe856 283 uint16_t numofpage = 0, numofsingle = 0, count = 0;
bcostm 6:e1d9da7fe856 284 uint16_t addr = 0;
bcostm 6:e1d9da7fe856 285 uint8_t dataindex = 0;
bcostm 6:e1d9da7fe856 286 uint32_t status = EEPROM_OK;
bcostm 6:e1d9da7fe856 287
bcostm 6:e1d9da7fe856 288 addr = WriteAddr % EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 289 count = EEPROM_PAGESIZE - addr;
bcostm 6:e1d9da7fe856 290 numofpage = NumByteToWrite / EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 291 numofsingle = NumByteToWrite % EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 292
bcostm 6:e1d9da7fe856 293 /* If WriteAddr is EEPROM_PAGESIZE aligned */
bcostm 6:e1d9da7fe856 294 if(addr == 0)
bcostm 6:e1d9da7fe856 295 {
bcostm 6:e1d9da7fe856 296 /* If NumByteToWrite < EEPROM_PAGESIZE */
bcostm 6:e1d9da7fe856 297 if(numofpage == 0)
bcostm 6:e1d9da7fe856 298 {
bcostm 6:e1d9da7fe856 299 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 300 dataindex = numofsingle;
bcostm 6:e1d9da7fe856 301 /* Start writing data */
bcostm 6:e1d9da7fe856 302 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 303 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 304 {
bcostm 6:e1d9da7fe856 305 return status;
bcostm 6:e1d9da7fe856 306 }
bcostm 6:e1d9da7fe856 307 }
bcostm 6:e1d9da7fe856 308 /* If NumByteToWrite > EEPROM_PAGESIZE */
bcostm 6:e1d9da7fe856 309 else
bcostm 6:e1d9da7fe856 310 {
bcostm 6:e1d9da7fe856 311 while(numofpage--)
bcostm 6:e1d9da7fe856 312 {
bcostm 6:e1d9da7fe856 313 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 314 dataindex = EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 315 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 316 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 317 {
bcostm 6:e1d9da7fe856 318 return status;
bcostm 6:e1d9da7fe856 319 }
bcostm 6:e1d9da7fe856 320
bcostm 6:e1d9da7fe856 321 WriteAddr += EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 322 pBuffer += EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 323 }
bcostm 6:e1d9da7fe856 324
bcostm 6:e1d9da7fe856 325 if(numofsingle!=0)
bcostm 6:e1d9da7fe856 326 {
bcostm 6:e1d9da7fe856 327 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 328 dataindex = numofsingle;
bcostm 6:e1d9da7fe856 329 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 330 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 331 {
bcostm 6:e1d9da7fe856 332 return status;
bcostm 6:e1d9da7fe856 333 }
bcostm 6:e1d9da7fe856 334 }
bcostm 6:e1d9da7fe856 335 }
bcostm 6:e1d9da7fe856 336 }
bcostm 6:e1d9da7fe856 337 /* If WriteAddr is not EEPROM_PAGESIZE aligned */
bcostm 6:e1d9da7fe856 338 else
bcostm 6:e1d9da7fe856 339 {
bcostm 6:e1d9da7fe856 340 /* If NumByteToWrite < EEPROM_PAGESIZE */
bcostm 6:e1d9da7fe856 341 if(numofpage== 0)
bcostm 6:e1d9da7fe856 342 {
bcostm 6:e1d9da7fe856 343 /* If the number of data to be written is more than the remaining space
bcostm 6:e1d9da7fe856 344 in the current page: */
bcostm 6:e1d9da7fe856 345 if(NumByteToWrite > count)
bcostm 6:e1d9da7fe856 346 {
bcostm 6:e1d9da7fe856 347 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 348 dataindex = count;
bcostm 6:e1d9da7fe856 349 /* Write the data contained in same page */
bcostm 6:e1d9da7fe856 350 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 351 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 352 {
bcostm 6:e1d9da7fe856 353 return status;
bcostm 6:e1d9da7fe856 354 }
bcostm 6:e1d9da7fe856 355
bcostm 6:e1d9da7fe856 356 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 357 dataindex = (NumByteToWrite - count);
bcostm 6:e1d9da7fe856 358 /* Write the remaining data in the following page */
bcostm 6:e1d9da7fe856 359 status = BSP_EEPROM_WritePage((uint8_t*)(pBuffer + count), (WriteAddr + count), (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 360 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 361 {
bcostm 6:e1d9da7fe856 362 return status;
bcostm 6:e1d9da7fe856 363 }
bcostm 6:e1d9da7fe856 364 }
bcostm 6:e1d9da7fe856 365 else
bcostm 6:e1d9da7fe856 366 {
bcostm 6:e1d9da7fe856 367 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 368 dataindex = numofsingle;
bcostm 6:e1d9da7fe856 369 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 370 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 371 {
bcostm 6:e1d9da7fe856 372 return status;
bcostm 6:e1d9da7fe856 373 }
bcostm 6:e1d9da7fe856 374 }
bcostm 6:e1d9da7fe856 375 }
bcostm 6:e1d9da7fe856 376 /* If NumByteToWrite > EEPROM_PAGESIZE */
bcostm 6:e1d9da7fe856 377 else
bcostm 6:e1d9da7fe856 378 {
bcostm 6:e1d9da7fe856 379 NumByteToWrite -= count;
bcostm 6:e1d9da7fe856 380 numofpage = NumByteToWrite / EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 381 numofsingle = NumByteToWrite % EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 382
bcostm 6:e1d9da7fe856 383 if(count != 0)
bcostm 6:e1d9da7fe856 384 {
bcostm 6:e1d9da7fe856 385 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 386 dataindex = count;
bcostm 6:e1d9da7fe856 387 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 388 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 389 {
bcostm 6:e1d9da7fe856 390 return status;
bcostm 6:e1d9da7fe856 391 }
bcostm 6:e1d9da7fe856 392 WriteAddr += count;
bcostm 6:e1d9da7fe856 393 pBuffer += count;
bcostm 6:e1d9da7fe856 394 }
bcostm 6:e1d9da7fe856 395
bcostm 6:e1d9da7fe856 396 while(numofpage--)
bcostm 6:e1d9da7fe856 397 {
bcostm 6:e1d9da7fe856 398 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 399 dataindex = EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 400 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 401 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 402 {
bcostm 6:e1d9da7fe856 403 return status;
bcostm 6:e1d9da7fe856 404 }
bcostm 6:e1d9da7fe856 405 WriteAddr += EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 406 pBuffer += EEPROM_PAGESIZE;
bcostm 6:e1d9da7fe856 407 }
bcostm 6:e1d9da7fe856 408 if(numofsingle != 0)
bcostm 6:e1d9da7fe856 409 {
bcostm 6:e1d9da7fe856 410 /* Store the number of data to be written */
bcostm 6:e1d9da7fe856 411 dataindex = numofsingle;
bcostm 6:e1d9da7fe856 412 status = BSP_EEPROM_WritePage(pBuffer, WriteAddr, (uint8_t*)(&dataindex));
bcostm 6:e1d9da7fe856 413 if(status != EEPROM_OK)
bcostm 6:e1d9da7fe856 414 {
bcostm 6:e1d9da7fe856 415 return status;
bcostm 6:e1d9da7fe856 416 }
bcostm 6:e1d9da7fe856 417 }
bcostm 6:e1d9da7fe856 418 }
bcostm 6:e1d9da7fe856 419 }
bcostm 6:e1d9da7fe856 420
bcostm 6:e1d9da7fe856 421 /* If all operations OK, return EEPROM_OK (0) */
bcostm 6:e1d9da7fe856 422 return EEPROM_OK;
bcostm 6:e1d9da7fe856 423 }
bcostm 6:e1d9da7fe856 424
bcostm 6:e1d9da7fe856 425 /**
bcostm 6:e1d9da7fe856 426 * @brief Wait for EEPROM Standby state.
bcostm 6:e1d9da7fe856 427 *
bcostm 6:e1d9da7fe856 428 * @note This function allows to wait and check that EEPROM has finished the
bcostm 6:e1d9da7fe856 429 * last operation. It is mostly used after Write operation: after receiving
bcostm 6:e1d9da7fe856 430 * the buffer to be written, the EEPROM may need additional time to actually
bcostm 6:e1d9da7fe856 431 * perform the write operation. During this time, it doesn't answer to
bcostm 6:e1d9da7fe856 432 * I2C packets addressed to it. Once the write operation is complete
bcostm 6:e1d9da7fe856 433 * the EEPROM responds to its address.
bcostm 6:e1d9da7fe856 434 *
bcostm 6:e1d9da7fe856 435 * @retval EEPROM_OK (0) if operation is correctly performed, else return value
bcostm 6:e1d9da7fe856 436 * different from EEPROM_OK (0) or the timeout user callback.
bcostm 6:e1d9da7fe856 437 */
bcostm 6:e1d9da7fe856 438 uint32_t BSP_EEPROM_WaitEepromStandbyState(void)
bcostm 6:e1d9da7fe856 439 {
bcostm 6:e1d9da7fe856 440 /* Check if the maximum allowed number of trials has bee reached */
bcostm 6:e1d9da7fe856 441 if(EEPROM_IO_IsDeviceReady(EEPROMAddress, EEPROM_MAX_TRIALS) != HAL_OK)
bcostm 6:e1d9da7fe856 442 {
bcostm 6:e1d9da7fe856 443 /* If the maximum number of trials has been reached, exit the function */
bcostm 6:e1d9da7fe856 444 BSP_EEPROM_TIMEOUT_UserCallback();
bcostm 6:e1d9da7fe856 445 return EEPROM_TIMEOUT;
bcostm 6:e1d9da7fe856 446 }
bcostm 6:e1d9da7fe856 447 return EEPROM_OK;
bcostm 6:e1d9da7fe856 448 }
bcostm 6:e1d9da7fe856 449
bcostm 6:e1d9da7fe856 450 /**
bcostm 6:e1d9da7fe856 451 * @brief Basic management of the timeout situation.
bcostm 6:e1d9da7fe856 452 * @retval None
bcostm 6:e1d9da7fe856 453 */
bcostm 6:e1d9da7fe856 454 __weak void BSP_EEPROM_TIMEOUT_UserCallback(void)
bcostm 6:e1d9da7fe856 455 {
bcostm 6:e1d9da7fe856 456 }
bcostm 6:e1d9da7fe856 457
bcostm 6:e1d9da7fe856 458 /**
bcostm 6:e1d9da7fe856 459 * @}
bcostm 6:e1d9da7fe856 460 */
bcostm 6:e1d9da7fe856 461
bcostm 6:e1d9da7fe856 462 /**
bcostm 6:e1d9da7fe856 463 * @}
bcostm 6:e1d9da7fe856 464 */
bcostm 6:e1d9da7fe856 465
bcostm 6:e1d9da7fe856 466 /**
bcostm 6:e1d9da7fe856 467 * @}
bcostm 6:e1d9da7fe856 468 */
bcostm 6:e1d9da7fe856 469
bcostm 6:e1d9da7fe856 470 /**
bcostm 6:e1d9da7fe856 471 * @}
bcostm 6:e1d9da7fe856 472 */
bcostm 6:e1d9da7fe856 473
bcostm 6:e1d9da7fe856 474 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/