296 lines
10 KiB
C
296 lines
10 KiB
C
/**
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******************************************************************************
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* @file BSP/Src/eeprom.c
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* @author MCD Application Team
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* @brief This example code shows how to manage I2C EEPROM memory
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* ===================================================================
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* Notes:
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* - This driver is intended for STM32F107xC families devices only.
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* - The I2C EEPROM memory (M24CXX) is available is available directly on
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* STM3210C-EVAL RevC board.
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* ===================================================================
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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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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/** @addtogroup STM32F1xx_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 EEPROM_FEATURES_NUM 2
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#define EEPROM_TEST_NB 1
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#define BUFFER_SIZE1 (countof(Tx1Buffer)-1 + 17)
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#define EEPROM_WRITE_ADDRESS1 0x50
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#define EEPROM_READ_ADDRESS1 0x50
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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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static uint8_t EepromFeature = 0;
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static uint8_t EepromSelected[EEPROM_TEST_NB] = {BSP_EEPROM_M24C64_32};
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static uint8_t EepromTestNb = 0;
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uint8_t EepromDetected = 1;
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/* Private function prototypes -----------------------------------------------*/
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static void EEPROM_SetHint(void);
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static void EEPROM_Show_Feature(uint8_t feature);
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static TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
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extern __IO uint8_t NbLoop;
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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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EEPROM_SetHint();
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EepromFeature = 0;
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EepromTestNb = 0;
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/* Select EEPROM Component */
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BSP_EEPROM_SelectDevice(EepromSelected[EepromTestNb++]);
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EEPROM_Show_Feature(EepromFeature++);
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while (1)
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{
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if(CheckForUserInput() > 0)
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{
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if(EepromFeature < EEPROM_FEATURES_NUM)
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{
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EEPROM_Show_Feature(EepromFeature++);
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}
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else
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{
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return;
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}
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if(EepromTestNb < EEPROM_TEST_NB)
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{
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/* Select another EEPROM */
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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BSP_LCD_DisplayStringAt(0, 205, (uint8_t *)"Press Key push-button", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 220, (uint8_t *)"to select other EEPROM", CENTER_MODE);
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BSP_EEPROM_SelectDevice(EepromSelected[EepromTestNb++]);
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/* Restart example feature */
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EepromFeature = 0;
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}
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}
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HAL_Delay(100);
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}
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}
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/**
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* @brief Display EEPROM Demo Hint
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* @param None
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* @retval None
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*/
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static void EEPROM_SetHint(void)
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{
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/* Clear the LCD */
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BSP_LCD_Clear(LCD_COLOR_WHITE);
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/* Set LCD Demo description */
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
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BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
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BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
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BSP_LCD_SetFont(&Font24);
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BSP_LCD_DisplayStringAt(0, 0, (uint8_t*)"EEPROM", CENTER_MODE);
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BSP_LCD_SetFont(&Font12);
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BSP_LCD_DisplayStringAt(0, 30, (uint8_t*)"This example shows the different", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 45, (uint8_t*)"EEPROM Features, use Key push-button", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 60, (uint8_t*)"to start EEPROM data transfer", CENTER_MODE);
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/* Set the LCD Text Color */
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100);
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BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102);
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}
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/**
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* @brief Show EEPROM Features
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* @param feature : feature index
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* @retval None
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*/
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static void EEPROM_Show_Feature(uint8_t feature)
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{
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uint8_t Tx1Buffer[] = "STM32F107xC EEPROM";
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uint8_t EEPROM_I2C[] = "I2C";
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uint8_t *Bus = NULL;
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uint8_t Rx1Buffer[BUFFER_SIZE1] = {0};
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uint8_t Tx2Buffer[BUFFER_SIZE1] = {0};
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__IO TestStatus TransferStatus1 = FAILED;
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__IO uint32_t NumDataRead = 0;
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BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
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BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
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BSP_LCD_FillRect(12, 92, BSP_LCD_GetXSize()- 24, BSP_LCD_GetYSize() - 104);
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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/* Initialize the EEPROM driver --------------------------------------------*/
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if (BSP_EEPROM_Init() != EEPROM_OK)
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Initialization problem", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"Check if HW connected or", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 145, (uint8_t*)"HW version not supported", CENTER_MODE);
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return;
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}
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EepromDetected = 1;
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switch (feature)
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{
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case 0:
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/* Read old parameter in EEPROM */
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if (EepromDetected == 1)
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{
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/* Set the Number of data to be read */
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NumDataRead = (uint32_t)BUFFER_SIZE1;
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/* Read from EEPROM from EEPROM_READ_ADDRESS1 */
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if (BSP_EEPROM_ReadBuffer(Rx1Buffer, EEPROM_READ_ADDRESS1, (uint32_t *)(&NumDataRead)) != EEPROM_OK)
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Init issue at read old data", CENTER_MODE);
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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BSP_LCD_DisplayStringAt(0, 145, (uint8_t*)"Press again Key push-button", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 160, (uint8_t*)"To write new data", CENTER_MODE);
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return;
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}
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"String read", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"in the current EEPROM selected:", CENTER_MODE);
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_DisplayStringAt(0, 160, Rx1Buffer, CENTER_MODE);
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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BSP_LCD_DisplayStringAt(0, 190, (uint8_t*)"Press Key push-button", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 205, (uint8_t*)"To write new data", CENTER_MODE);
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}
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else
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Problem to communicate", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"with EEPROM", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 145, (uint8_t*)"Press again Key push-button", CENTER_MODE);
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}
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break;
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case 1:
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/* Write new parameter in EEPROM */
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if (EepromDetected == 1)
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{
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Bus = EEPROM_I2C;
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snprintf((char*)Tx2Buffer, BUFFER_SIZE1, "%s %s Ex. test %d", Tx1Buffer, Bus, NbLoop);
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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(Tx2Buffer, EEPROM_WRITE_ADDRESS1, BUFFER_SIZE1) != EEPROM_OK)
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Init issue at write", CENTER_MODE);
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return;
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}
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/* Set the Number of data to be read */
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NumDataRead = (uint32_t)BUFFER_SIZE1;
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/* Read from I2C EEPROM from EEPROM_READ_ADDRESS1 */
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if (BSP_EEPROM_ReadBuffer(Rx1Buffer, EEPROM_READ_ADDRESS1, (uint32_t *)(&NumDataRead)) != EEPROM_OK)
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Init issue at read", CENTER_MODE);
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return;
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}
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/* Check if the data written to the memory is read correctly */
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TransferStatus1 = Buffercmp(Tx2Buffer, Rx1Buffer, BUFFER_SIZE1);
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if(TransferStatus1 != FAILED)
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{
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"String writes", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"in the current EEPROM selected:", CENTER_MODE);
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_DisplayStringAt(0, 160, Tx2Buffer, CENTER_MODE);
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}
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else
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"FAILED to write!", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"Press Key push-button", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 145, (uint8_t*)"to end test.", CENTER_MODE);
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}
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}
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else
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(0, 115, (uint8_t*)"Problem to communicate", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 130, (uint8_t*)"again with EEPROM", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 145, (uint8_t*)"Press Key push-button to end test", CENTER_MODE);
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}
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break;
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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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EepromDetected = 0;
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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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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