mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-02 22:17:06 +08:00
256 lines
8.9 KiB
C
256 lines
8.9 KiB
C
/**
|
|
******************************************************************************
|
|
* @file BSP/Src/eeprom.c
|
|
* @author MCD Application Team
|
|
* @brief This example code shows how to manage an I2C M24C64
|
|
* EEPROM memory
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "main.h"
|
|
|
|
/** @addtogroup STM32F4xx_HAL_Examples
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup BSP
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
|
|
|
|
/* Private define ------------------------------------------------------------*/
|
|
#define EEPROM_FEATURES_NUM 2
|
|
#define BUFFER_SIZE1 (countof(Tx1Buffer)-1 + 8)
|
|
#define EEPROM_WRITE_ADDRESS1 0x50
|
|
#define EEPROM_READ_ADDRESS1 0x50
|
|
|
|
/* Private macro -------------------------------------------------------------*/
|
|
#define countof(a) (sizeof(a) / sizeof(*(a)))
|
|
|
|
/* Private variables ---------------------------------------------------------*/
|
|
extern uint8_t NbLoop;
|
|
static uint8_t EEPROMFeature = 0;
|
|
__IO uint16_t NumDataRead = 0;
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
static void EEPROM_SetHint(void);
|
|
static void EEPROM_Show_Feature(uint8_t feature);
|
|
static TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/**
|
|
* @brief EEPROM Demo
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void EEPROM_demo(void)
|
|
{
|
|
EEPROM_SetHint();
|
|
EEPROMFeature = 0;
|
|
|
|
EEPROM_Show_Feature (EEPROMFeature);
|
|
|
|
while (1)
|
|
{
|
|
if(CheckForUserInput() > 0)
|
|
{
|
|
if(++EEPROMFeature < EEPROM_FEATURES_NUM)
|
|
{
|
|
EEPROM_Show_Feature(EEPROMFeature);
|
|
}
|
|
else
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
HAL_Delay(100);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Display EEPROM Demo Hint
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void EEPROM_SetHint(void)
|
|
{
|
|
/* Clear the LCD */
|
|
BSP_LCD_Clear(LCD_COLOR_WHITE);
|
|
|
|
/* Set LCD Demo description */
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
|
|
BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
|
|
BSP_LCD_SetFont(&Font24);
|
|
BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"EEPROM", CENTER_MODE);
|
|
BSP_LCD_SetFont(&Font12);
|
|
BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows the different", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"EEPROM Features, use BUTTON", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 60, (uint8_t *)"to start EEPROM data transfer", CENTER_MODE);
|
|
|
|
/* Set the LCD Text Color */
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
|
|
BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100);
|
|
BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102);
|
|
}
|
|
|
|
/**
|
|
* @brief Show EEPROM Features
|
|
* @param feature: feature index
|
|
* @retval None
|
|
*/
|
|
static void EEPROM_Show_Feature(uint8_t feature)
|
|
{
|
|
uint8_t Tx1Buffer[] = "STM324xG-EVAL EEPROM Ex.";
|
|
uint8_t Rx1Buffer[BUFFER_SIZE1] = {0};
|
|
uint8_t Tx2Buffer[BUFFER_SIZE1] = {0};
|
|
__IO TestStatus TransferStatus1 = FAILED;
|
|
|
|
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_FillRect(12, 92, BSP_LCD_GetXSize() - 24, BSP_LCD_GetYSize()- 104);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
|
|
|
|
/* Initialize the I2C EEPROM driver ----------------------------------------*/
|
|
if(BSP_EEPROM_Init() != EEPROM_OK)
|
|
{
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"Initialization Issue", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 130, (uint8_t *)"Check if HW connected or", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 145, (uint8_t *)"HW version not supported", CENTER_MODE);
|
|
return;
|
|
}
|
|
|
|
switch (feature)
|
|
{
|
|
case 0:
|
|
/* Read old parameter in EEPROM */
|
|
/* Set the Number of data to be read */
|
|
NumDataRead = BUFFER_SIZE1;
|
|
|
|
/* Read from I2C EEPROM from EEPROM_READ_ADDRESS1 */
|
|
if(BSP_EEPROM_ReadBuffer(Rx1Buffer, EEPROM_READ_ADDRESS1, (uint16_t *)(&NumDataRead)) != EEPROM_OK)
|
|
{
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"Init issue at read old data", CENTER_MODE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
|
|
BSP_LCD_DisplayStringAt(0, 145, (uint8_t *)"Press again USER key", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 160, (uint8_t *)"To write new data", CENTER_MODE);
|
|
return;
|
|
}
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"PASSED String read", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 130, (uint8_t *)"in EEPROM:", CENTER_MODE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
|
|
BSP_LCD_DisplayStringAt(0, 160, Rx1Buffer, CENTER_MODE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
|
|
BSP_LCD_DisplayStringAt(0, 190, (uint8_t *)"Press USER key", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 205, (uint8_t *)"To write new data", CENTER_MODE);
|
|
break;
|
|
|
|
case 1:
|
|
/* Write new parameter in EEPROM */
|
|
snprintf((char*)Tx2Buffer, BUFFER_SIZE1, "%s Test %d", Tx1Buffer, NbLoop);
|
|
/* First write in the memory followed by a read of the written data ------*/
|
|
/* Write on I2C EEPROM to EEPROM_WRITE_ADDRESS1 */
|
|
if(BSP_EEPROM_WriteBuffer(Tx2Buffer, EEPROM_WRITE_ADDRESS1, BUFFER_SIZE1) != EEPROM_OK)
|
|
{
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"Init issue at write", CENTER_MODE);
|
|
return;
|
|
}
|
|
|
|
/* Set the Number of data to be read */
|
|
NumDataRead = BUFFER_SIZE1;
|
|
|
|
/* Read from I2C EEPROM from EEPROM_READ_ADDRESS1 */
|
|
if(BSP_EEPROM_ReadBuffer(Rx1Buffer, EEPROM_READ_ADDRESS1, (uint16_t *)(&NumDataRead)) != EEPROM_OK)
|
|
{
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"Init issue at read", CENTER_MODE);
|
|
return;
|
|
}
|
|
|
|
/* Check if the data written to the memory is read correctly */
|
|
TransferStatus1 = Buffercmp(Tx2Buffer, Rx1Buffer, BUFFER_SIZE1);
|
|
if(TransferStatus1 != FAILED)
|
|
{
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"PASSED String writes", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 130, (uint8_t *)"in EEPROM:", CENTER_MODE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
|
|
BSP_LCD_DisplayStringAt(0, 160, Tx2Buffer, CENTER_MODE);
|
|
}
|
|
else
|
|
{
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, 115, (uint8_t *)"FAILED to write!", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, 130, (uint8_t *)"Press USER key to end test", CENTER_MODE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Compares two buffers.
|
|
* @param pBuffer1, pBuffer2: buffers to be compared.
|
|
* @param BufferLength: buffer's length
|
|
* @retval PASSED: pBuffer1 identical to pBuffer2
|
|
* FAILED: pBuffer1 differs from pBuffer2
|
|
*/
|
|
static TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
|
|
{
|
|
while(BufferLength--)
|
|
{
|
|
if(*pBuffer1 != *pBuffer2)
|
|
{
|
|
return FAILED;
|
|
}
|
|
|
|
pBuffer1++;
|
|
pBuffer2++;
|
|
}
|
|
|
|
return PASSED;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|