13.[STM32F429] eeprom

Memory map

IAR 경우 tools -> options 가서 Message 에서 ALL을 선택해야 용량이 보입니다.

tools -> options...

 

일단 code 용량 체크부터 해봐야합니다.

이 코드의 용량은 29238+8193 =37431 (0x9237)byte입니다.

그러므로 sector2 까지는 쓰네요

저는 비어있는 sector3 에 eeprom을 써봅시다.

아래에 stm32f427 memory를 보니 0x08009236 까지 쓰는걸 볼수 있습니다. 

 

STM32Cube 설정

RCC 설정

SYS 설정

 

#ifndef __MAIN_H
#define __MAIN_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
#define ADDR_FLASH_SECTOR_0     ((uint32_t)0x08000000) /* Base @ of Sector 0, 16 Kbytes */
#define ADDR_FLASH_SECTOR_1     ((uint32_t)0x08004000) /* Base @ of Sector 1, 16 Kbytes */
#define ADDR_FLASH_SECTOR_2     ((uint32_t)0x08008000) /* Base @ of Sector 2, 16 Kbytes */
#define ADDR_FLASH_SECTOR_3     ((uint32_t)0x0800C000) /* Base @ of Sector 3, 16 Kbytes */
#define ADDR_FLASH_SECTOR_4     ((uint32_t)0x08010000) /* Base @ of Sector 4, 64 Kbytes */
#define ADDR_FLASH_SECTOR_5     ((uint32_t)0x08020000) /* Base @ of Sector 5, 128 Kbytes */
#define ADDR_FLASH_SECTOR_6     ((uint32_t)0x08040000) /* Base @ of Sector 6, 128 Kbytes */
#define ADDR_FLASH_SECTOR_7     ((uint32_t)0x08060000) /* Base @ of Sector 7, 128 Kbytes */
#define ADDR_FLASH_SECTOR_8     ((uint32_t)0x08080000) /* Base @ of Sector 8, 128 Kbytes */
#define ADDR_FLASH_SECTOR_9     ((uint32_t)0x080A0000) /* Base @ of Sector 9, 128 Kbytes */
#define ADDR_FLASH_SECTOR_10    ((uint32_t)0x080C0000) /* Base @ of Sector 10, 128 Kbytes */
#define ADDR_FLASH_SECTOR_11    ((uint32_t)0x080E0000) /* Base @ of Sector 11, 128 Kbytes */
/* USER CODE END ET */

/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */

/* USER CODE END EC */

/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */

/* USER CODE END EM */

/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);

/* USER CODE BEGIN EFP */

/* USER CODE END EFP */

/* Private defines -----------------------------------------------------------*/
/* USER CODE BEGIN Private defines */

/* USER CODE END Private defines */

#ifdef __cplusplus
}
#endif

#endif /* __MAIN_H */

#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
static FLASH_EraseInitTypeDef EraseInitStruct;

uint32_t SectorError = 0;
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int fputc(int ch, FILE *f)
{
    uint8_t temp[1]={ch};
    HAL_UART_Transmit(&huart1, temp, 1, 2);
  return(ch);
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
  uint32_t rom_data=1;
  uint32_t user_address=0;
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  /*
  HAL_FLASH_Unlock();
  EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
  EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
  EraseInitStruct.Sector = 3;
  EraseInitStruct.NbSectors = 3;
  HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError);  
  HAL_FLASH_Lock();
  */
  printf("eep_test\r\n");
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  user_address=ADDR_FLASH_SECTOR_3;
  while (1)
  {
    /* USER CODE END WHILE */
    if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)==1){
      printf("check\r\n");
      
      HAL_FLASH_Unlock();
      printf("Addr=%x,Data=%d\r\n",user_address,(*(uint32_t*)user_address));
      
      if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, user_address, rom_data) == HAL_OK){
        printf("Success\r\n");
        printf("Addr=%x,Data=%d,%d\r\n",user_address,(*(uint32_t*)user_address),rom_data);
        rom_data++;
        user_address+=4;
      }
      else{
        Error_Handler();
      }
      HAL_FLASH_Lock(); 
      while(!(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)==0));
      
    }
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

 

주석 부분은 메모리 초기화 코드입니다.

 

결과 화면

USER 스위치를 누를때 마다 메모리를 +4byte(32bit) 증가시키면서 1씩 증가된 값을 씁니다.