Question
Interfacing of stm32F446re with SD card
#include <stdio.h>
#include <string.h>
#include "fatfs.h"
#include "fatfs_sd.h"
#include "main.h"
FATFS fs;
FIL fil;
FATFS* pfs;
DWORD fre_clust;
uint32_t totalSpace, freeSpace;
/* 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 */
char buffer[100];
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);
void read_and_print_file(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int _write(int file, char* ptr, int len) {
int i;
for (i = 0; i < len; i++) {
ITM_SendChar(*ptr++);
}
return len;
}
/* 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_SPI1_Init();
MX_FATFS_Init();
/* USER CODE BEGIN 2 */
CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
ITM->LAR = 0xC5ACCE55; // Unlock the ITM register
ITM->TCR = 0x00010005; // Enable ITM with stimulus port 0
ITM->TPR = 0x0000000F; // Set privilege level to allow tracing in user code
if (!(GPIO_PIN_4)) {
printf("SD card is not initialized\n");
} else {
printf("SD card is initialized\n");
}
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);
printf("t_space :%d\n" + totalSpace);
printf("f_space :%d\n" + freeSpace);
while (1) {
f_mount(&fs, "", 0);
printf("Creating the file\n");
f_open(&fil, "/abc.txt", FA_OPEN_ALWAYS | FA_WRITE | FA_READ);
printf("File is created\n");
f_puts("AutoTec Systems\n", &fil);
printf("Data is stored in the SD card\n");
f_close(&fil);
// Read and print file contents
read_and_print_file();
printf("data is read\n");
HAL_Delay(500);
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_SCALE3);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 72;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != 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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
Error_Handler();
}
}
static void MX_SPI1_Init(void) {
/* SPI1 parameter configuration*/
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi1) != HAL_OK) {
Error_Handler();
}
}
static void MX_GPIO_Init(void) {
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, GPIO_PIN_RESET);
/*Configure GPIO pin : PA4 */
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
void Error_Handler(void) {
__disable_irq();
while (1) {
}
/* USER CODE END Error_Handler_Debug */
}
void read_and_print_file(void) {
f_open(&fil, "abc.txt", FA_READ);
// Reads line by line until the end
while (f_gets(buffer, sizeof(buffer), &fil)) {
// Print the content to SWV terminal
printf("%s", buffer);
// Clear the buffer
memset(buffer, 0, sizeof(buffer));
}
f_close(&fil);
}..this is our code, it executes succesfully with 0 errors, nut it didint create any file into the sd card why? give solution for this problem..