137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/**
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******************************************************************************
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* @file eeprom.c
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* @author MCD Application Team
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* @brief This example code shows how to use the eeprom supported by the
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* B-WL5M-SUBG board
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2022 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "b_wl5m_subg_bus.h"
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/** @addtogroup B_WL5M_SUBG_HAL_Examples
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* @{
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*/
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/** @addtogroup BSP
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
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/* Private define ------------------------------------------------------------*/
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#define BUFFER_SIZE (countof(TxBuffer))
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#define EEPROM_WRITE_ADDRESS1 0x0
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#define EEPROM_READ_ADDRESS1 0x0
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/* Private macro -------------------------------------------------------------*/
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#define countof(a) (sizeof(a) / sizeof(*(a)))
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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static TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief EEPROM Demo
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* @param None
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* @retval None
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*/
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void EEPROM_demo (void)
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{
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uint8_t TxBuffer[] = "**** B-WL5M-SUBG EEPROM ****";
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uint8_t RxBuffer[64] = {0};
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/* Init the LEDs */
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BSP_LED_Init(LED_RED);
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BSP_LED_Init(LED_GREEN);
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/* Select EEPROM Component */
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/* Initialize the EEPROM driver --------------------------------------------*/
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if (BSP_EEPROM_Init() != BSP_ERROR_NONE)
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{
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Error_Handler();
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}
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/* First write in the memory followed by a read of the written data ----*/
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/* Write on EEPROM to EEPROM_WRITE_ADDRESS1 */
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if (BSP_EEPROM_WriteBuffer(TxBuffer, EEPROM_WRITE_ADDRESS1, BUFFER_SIZE) != BSP_ERROR_NONE)
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{
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Error_Handler();
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}
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/* Set the Number of data to be read */
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uint16_t NumDataRead = (uint16_t)BUFFER_SIZE;
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/* Read from I2C EEPROM from EEPROM_READ_ADDRESS1 */
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if (BSP_EEPROM_ReadBuffer(RxBuffer, EEPROM_READ_ADDRESS1, (uint16_t *)(&NumDataRead)) != BSP_ERROR_NONE)
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{
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Error_Handler();
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}
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/* Check if the data written to the memory is read correctly */
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TestStatus TransferStatus = Buffercmp(TxBuffer, RxBuffer, BUFFER_SIZE);
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if(TransferStatus == FAILED)
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{
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printf("\tWrite/Read failed !!\n");
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Error_Handler();
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}
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else
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{
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printf("\tWrite/Read passed !!\n");
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BSP_LED_Toggle( LED_GREEN );
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HAL_Delay( 5000 );
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}
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}
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/**
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* @brief Basic management of the timeout situation.
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* @param None.
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* @retval 0.
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*/
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void BSP_EEPROM_TIMEOUT_UserCallback(void)
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{
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}
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/**
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* @brief Compares two buffers.
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* @param pBuffer1, pBuffer2: buffers to be compared.
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* @param BufferLength: buffer's length
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* @retval PASSED: pBuffer1 identical to pBuffer2
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* FAILED: pBuffer1 differs from pBuffer2
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*/
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static TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
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{
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while(BufferLength--)
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{
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if(*pBuffer1 != *pBuffer2)
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{
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return FAILED;
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}
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pBuffer1++;
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pBuffer2++;
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}
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return PASSED;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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