main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fatfs.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "fatfs_sd.h"
#include "stdio.h"
#include "string.h"
#include "stddef.h"	// NULL

/* USER CODE END Includes */

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

/* USER CODE END PTD */

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

SPI_HandleTypeDef hspi2;
FATFS fs;
FATFS *pfs;
FIL fil;
FRESULT fres;
DWORD fre_clust;
uint32_t totalSpace, freeSpace;
char buffer[100];
uint8_t str[50];

uint32_t bw, br;
volatile uint8_t closedFlag = 0;

//BYTE buf[32] = "Hello World";


/* USER CODE END PD */

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

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
int _write(int file, char* p, int len)
{
	if(HAL_UART_Transmit(&huart3, (uint8_t*)p, len, 10)==HAL_OK) return len;
	else return 0;
}
void _Error_Handler(char *file, int line);
void saveFile();
void MountSD(void);
void UnMountSD(void);
void OpenFile(char* fileName);
void CloseFile(void);
void CheckSize(void);
void WriteFile(char* fileName);
void ReadFile(char* fileName);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* 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_USART3_UART_Init();
  MX_FATFS_Init();
  MX_SPI2_Init();
  MX_TIM7_Init();
  /* USER CODE BEGIN 2 */


  /* Wait for SD module reset */
  HAL_Delay(1000);
  //saveFile();
  printf("-----------Start_Program------------\r\n");
  MountSD();
  CheckSize();
  char* fileName = "log-file.txt";
  OpenFile(fileName);
  char text[20] = "Write and Read!";

  WriteFile(text);
  //CloseFile();

  ReadFile(fileName);
  CloseFile();
  UnMountSD();
  printf("------------End_Program-------------\r\n");


//	uint16_t len = (uint16_t)strlen(text);
//	text[len] = '\r';
//	text[len+1] = '\n';
//	printf("TEXT : ");
//	HAL_UART_Transmit(&huart3, text, len+2, 50);







  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 180;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 8;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Activate the Over-Drive mode
  */
  if (HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

void MountSD(void)
{
	fres = f_mount(&fs, "", 0);
	if (fres == FR_OK) {
		printf("Micro SD card is mounted successfully!\r\n");
	} else if (fres != FR_OK) {
		printf("Micro SD card's mount error!\r\n");
	}
}

void UnMountSD(void)
{
	f_mount(NULL, "", 1);
	if (fres == FR_OK) {
		printf("The Micro SD card is unmounted!\r\n");
	} else if (fres != FR_OK) {
		printf("The Micro SD was not unmounted!\r\n");
	}
}

void OpenFile(char* fileName)
{
	fres = f_open(&fil, fileName, FA_OPEN_APPEND | FA_WRITE | FA_READ);
	if (fres == FR_OK) {
		printf("File opened for reading and writing!\r\n");
	} else if (fres != FR_OK) {
		printf("File was not opened for reading and writing!\r\n");
	}

	closedFlag = 0;
}

void CloseFile(void)
{
	fres = f_close(&fil);
	if (fres == FR_OK) {
		printf("The file is closed.\r\n");
	} else if (fres != FR_OK) {
		printf("The file was not closed.\r\n");
	}

	closedFlag = 1;
}

void CheckSize(void)
{

	fres = f_getfree("", &fre_clust, &pfs);
	totalSpace = (uint32_t) ((pfs->n_fatent - 2) * pfs->csize * 0.5);
	freeSpace = (uint32_t) (fre_clust * pfs->csize * 0.5);
	char mSz[100];
	sprintf(mSz, "%lu", freeSpace);	// lu
	if (fres == FR_OK) {
		printf("The free space is: ");
		printf(mSz);
		printf("\r\n");
	} else if (fres != FR_OK) {
		printf("The free space could not be determined!\r\n");
	}
}

void WriteFile(char* text)
{
	fres = f_lseek(&fil, 0);	// move cursor to initial position
	if (fres != FR_OK){
		printf("Can't move to initial position\r\n");
	}
//#define FPUTS
#define FWRITE

#ifdef FPUTS
////////////////////////////f_puts//////////////////////////////////
	int num = 0;
	sprintf((char*)buffer, "%s\n", text);
	for (uint8_t i = 0; i < 3; i++) {
		num += f_puts(buffer, &fil);
		printf("nchr : %d\r\n", num);	// 15 + \r\n\0 = 18
	}
	char temp[100];
	int cnt = 0;
	for	(int i = 0; i<sizeof(temp); i++)
	{
		temp[i] = buffer[i];
	}

	while(temp[cnt] != 0)	// NULL
	{
		printf("charData : %c\r\n", temp[cnt]);
		if (temp[cnt] == '\n') cnt++;
		cnt++;

	}

	printf("cnt : %d\r\n", cnt);
	if (cnt  == (num/3))
	{
		printf("Good Writing\r\n");
		printf("%d bytes Write\r\n", num);
	}
	else
	{
		printf("Writing failed\r\n");
	}
#endif

////////////////////////f_write////////////////////////////////

#ifdef FWRITE
	sprintf((char*)buffer, "%s\r\n", text);
	uint16_t length = (uint16_t)strlen(text);	    // + \r\n
	int cnt = 0;
	while(buffer[cnt] != 0)
	{
		if (buffer[cnt] == '\r') length++;
		else if(buffer[cnt] == '\n') length++;
		cnt++;
	}
	//uint16_t length = (uint16_t)strlen(text) + 1;
	//uint16_t length = (uint16_t)strlen(text) + 2;
	printf("length : %d\r\n", length);

	for (uint8_t i = 0; i < 3; i++) {
		fres = f_write(&fil, buffer, length, (void*)&bw);
	}


	//fres = f_write(&fil, buffer, sizeof(buffer), (void*)&bw);
	if(fres == FR_OK)
	{
		printf("Writing Complete\r\n");
		sprintf((char*)str, "%3d bytes Write", (int)bw);
		printf("%s\r\n", str);
	}
	else if(fres != FR_OK)
	{
		printf("Writing failed\r\n");
	}

#endif

}

void ReadFile(char* fileName)
{
	if (closedFlag == 0) CloseFile();

	fres = f_open(&fil, fileName, FA_READ);
	if (fres == FR_OK) {
		printf("File opened for reading.\r\n");
	} else if (fres != FR_OK) {
		printf("File was not opened for reading!\r\n");
	}
//#define FGETS
#define FREAD

//////////////////////////f_gets//////////////////////////////////
#ifdef FGETS
	while (f_gets(buffer, sizeof(buffer), &fil)) {
		char mRd[100];
		sprintf(mRd, "%s", buffer);
		printf(mRd);
	}
#endif

//////////////////////////f_read//////////////////////////////////

#ifdef FREAD
	fres = f_read(&fil, buffer, sizeof(buffer), (void*)&br);	// read util NULL
	char mRd[100];
	if (fres == FR_OK)
	{
		sprintf((char*)mRd, "%s", buffer);
		printf("\r\n-----------READING_TEXT----------\r\n");
		printf("%s", mRd);	// already existed \r\n
		printf("\r\n-----------READING_TEXT----------\r\n");
		sprintf((char*)str, "%3d bytes Read", (int)br);
		printf("%s\r\n", str);

	}
	else if (fres != FR_OK || br == 0)
	{
		printf("Can't read~!\r\n");
	}
#endif

}


void saveFile()
{
	/* Wait for SD module reset */
	HAL_Delay(1000);

	/* Waiting for the Micro SD module to initialize */
	HAL_Delay(500);

	fres = f_mount(&fs, "", 0);
	if (fres == FR_OK) {
		printf("Micro SD card is mounted successfully!\r\n");
	} else if (fres != FR_OK) {
		printf("Micro SD card's mount error!\r\n");
	}

	// FA_OPEN_APPEND opens file if it exists and if not then creates it,
	// the pointer is set at the end of the file for appending
	fres = f_open(&fil, "log-file.txt", FA_OPEN_APPEND | FA_WRITE | FA_READ);
	if (fres == FR_OK) {
		printf("File opened for reading and checking the free space.\r\n");
	} else if (fres != FR_OK) {
		printf("File was not opened for reading and checking the free space!\r\n");
	}

	// clust check -> freeSpace
	fres = f_getfree("", &fre_clust, &pfs);
	totalSpace = (uint32_t) ((pfs->n_fatent - 2) * pfs->csize * 0.5);
	freeSpace = (uint32_t) (fre_clust * pfs->csize * 0.5);
	char mSz[100];
	sprintf(mSz, "%lu", freeSpace);	// lu
	if (fres == FR_OK) {
		printf("The free space is: ");
		printf(mSz);
		printf("\r\n");
	} else if (fres != FR_OK) {
		printf("The free space could not be determined!\r\n");
	}

	// WRITE
	sprintf((char*)buffer, "File saved!\r\n");
	for (uint8_t i = 0; i < 10; i++) {
//		//f_puts("This text is written in the file.\r\n", &fil);
//		f_puts((char*)str, &fil);
		f_write(&fil, buffer, sizeof(buffer), (void*)&bw);
	}

	sprintf((char*)str, "%d bytes Write", (int)bw);
	printf("%s\r\n", str);

	// file closed
	fres = f_close(&fil);
	if (fres == FR_OK) {
		printf("The file is closed.\r\n");
	} else if (fres != FR_OK) {
		printf("The file was not closed.\r\n");
	}

	/* Open file to read */
	fres = f_open(&fil, "log-file.txt", FA_READ);
	if (fres == FR_OK) {
		printf("File opened for reading.\r\n");
	} else if (fres != FR_OK) {
		printf("File was not opened for reading!\r\n");
	}

//	while (f_gets(buffer, sizeof(buffer), &fil)) {
//		char mRd[100];
//		sprintf(mRd, "%s\r\n", buffer);
//		printf(mRd);
//	}



	char mRd[100];
    f_read(&fil, buffer, sizeof(buffer), (void*)&br);
    sprintf((char*)mRd, "%s", buffer);
    printf("%s", mRd);	// already existed \r\n


    sprintf((char*)str, "%d bytes Read", (int)br);
    printf("%s\r\n", str);

	/* Close file */
	fres = f_close(&fil);
	if (fres == FR_OK) {
		printf("The file is closed.\r\n");
	} else if (fres != FR_OK) {
		printf("The file was not closed.\r\n");
	}

	f_mount(NULL, "", 1);
	if (fres == FR_OK) {
		printf("The Micro SD card is unmounted!\r\n");
	} else if (fres != FR_OK) {
		printf("The Micro SD was not unmounted!\r\n");
	}
}

void SDtest(void)
{
	HAL_Delay(1000);
	printf("-----------Start_Program------------\r\n");
	MountSD();
	CheckSize();
	char* fileName = "log-file1.txt";
	OpenFile(fileName);
	char text[20] = "Write and Read!";

	WriteFile(text);
	CloseFile();

	ReadFile(fileName);
	CloseFile();
	UnMountSD();
	printf("------------End_Program-------------\r\n");
}

void _Error_Handler(char *file, int line)
{
	/* USER CODE BEGIN Error_Handler_Debug */
	/* User can add his own implementation to report the HAL error return state */
	while(1)
	{
	}
	/* USER CODE END Error_Handler_Debug */
}

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{

	static uint32_t temp;
	if(GPIO_Pin == GPIO_PIN_10)	// PIN_3 Pressed
	{
		if(HAL_GetTick() - temp > 100){
			printf("%s\r\n", "PIN_10 Pressed");
			HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_7);
			SDtest();
		}

		//while(HAL_GPIO_ReadPin(GPIOE, GPIO_PIN_3) == GPIO_PIN_RESET);
		while(HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_10) == GPIO_PIN_RESET){
			//printf("%s\r\n", "wait for reset");
		}	// button -> 0
		temp = HAL_GetTick();	// check last time
	}



}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */