/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 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 "crc.h"
#include "dma.h"
#include "fatfs.h"
#include "sdio.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include <string.h>
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#ifndef _USE_MKFS
#define _USE_MKFS 1
#endif
#if (_USE_MKFS == 1)
#define FATFS_MKFS_BUFFER_SIZE 4096U
#endif
#define FATFS_SPEED_TEST_BUFFER_SIZE 4096U
/* 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 */
static void FATFS_Test(void);
static void FATFS_SpeedTest(uint32_t kilobytes);
/* 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_DMA_Init();
MX_USART2_UART_Init();
MX_SDIO_SD_Init();
MX_CRC_Init();
MX_FATFS_Init();
/* USER CODE BEGIN 2 */
HAL_Delay(200);
FATFS_Test();
const uint32_t speed_test_kbytes = 512U; /* Adjust size to profile different transfers */
FATFS_SpeedTest(speed_test_kbytes);
/* 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_SCALE2);
/** 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 = 84;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
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();
}
}
/* USER CODE BEGIN 4 */
static void FATFS_SpeedTest(uint32_t kilobytes)
{
const char speed_file[] = "sd_speed.bin";
FRESULT res;
UINT bytes_io = 0U;
uint32_t total_bytes = 0U;
uint32_t remaining = 0U;
uint32_t start_tick = 0U;
uint32_t elapsed_ms = 0U;
uint32_t speed_kbs = 0U;
uint8_t is_mounted = 0U;
uint8_t file_opened = 0U;
uint8_t file_created = 0U;
static uint8_t transfer_buffer[FATFS_SPEED_TEST_BUFFER_SIZE];
if (kilobytes == 0U)
{
printf("fatfs speed test: size parameter must be > 0\r\n");
return;
}
if (kilobytes > (UINT32_MAX / 1024U))
{
printf("fatfs speed test: size too large\r\n");
return;
}
total_bytes = kilobytes * 1024U;
for (uint32_t i = 0U; i < sizeof(transfer_buffer); ++i)
{
transfer_buffer[i] = (uint8_t)(i & 0xFFU);
}
printf("fatfs speed test: mounting %s\r\n", SDPath);
res = f_mount(&SDFatFS, (TCHAR const*)SDPath, 1);
if (res != FR_OK)
{
printf("fatfs speed test: mount failed (%d)\r\n", (int)res);
return;
}
is_mounted = 1U;
res = f_open(&SDFile, speed_file, FA_CREATE_ALWAYS | FA_WRITE);
if (res != FR_OK)
{
printf("fatfs speed test: open for write failed (%d)\r\n", (int)res);
goto cleanup;
}
file_opened = 1U;
file_created = 1U;
printf("fatfs speed test: writing %lu KB\r\n", (unsigned long)kilobytes);
remaining = total_bytes;
start_tick = HAL_GetTick();
while (remaining > 0U)
{
uint32_t chunk = (remaining > sizeof(transfer_buffer)) ? (uint32_t)sizeof(transfer_buffer) : remaining;
res = f_write(&SDFile, transfer_buffer, chunk, &bytes_io);
if ((res != FR_OK) || (bytes_io != chunk))
{
printf("fatfs speed test: write error (%d)\r\n", (int)res);
goto cleanup;
}
remaining -= chunk;
}
res = f_sync(&SDFile);
if (res != FR_OK)
{
printf("fatfs speed test: sync failed (%d)\r\n", (int)res);
goto cleanup;
}
elapsed_ms = HAL_GetTick() - start_tick;
speed_kbs = (elapsed_ms > 0U) ? (uint32_t)(((uint64_t)total_bytes * 1000ULL) / ((uint64_t)elapsed_ms * 1024ULL)) : 0U;
printf("fatfs speed test: write done in %lu ms (%lu KB/s)\r\n",
(unsigned long)elapsed_ms, (unsigned long)speed_kbs);
f_close(&SDFile);
file_opened = 0U;
res = f_open(&SDFile, speed_file, FA_READ);
if (res != FR_OK)
{
printf("fatfs speed test: open for read failed (%d)\r\n", (int)res);
goto cleanup;
}
file_opened = 1U;
printf("fatfs speed test: reading %lu KB\r\n", (unsigned long)kilobytes);
remaining = total_bytes;
start_tick = HAL_GetTick();
while (remaining > 0U)
{
uint32_t chunk = (remaining > sizeof(transfer_buffer)) ? (uint32_t)sizeof(transfer_buffer) : remaining;
res = f_read(&SDFile, transfer_buffer, chunk, &bytes_io);
if (res != FR_OK)
{
printf("fatfs speed test: read error (%d)\r\n", (int)res);
goto cleanup;
}
if (bytes_io == 0U)
{
printf("fatfs speed test: unexpected end of file\r\n");
goto cleanup;
}
remaining -= bytes_io;
}
elapsed_ms = HAL_GetTick() - start_tick;
speed_kbs = (elapsed_ms > 0U) ? (uint32_t)(((uint64_t)total_bytes * 1000ULL) / ((uint64_t)elapsed_ms * 1024ULL)) : 0U;
printf("fatfs speed test: read done in %lu ms (%lu KB/s)\r\n",
(unsigned long)elapsed_ms, (unsigned long)speed_kbs);
f_close(&SDFile);
file_opened = 0U;
printf("fatfs speed test: removing %s\r\n", speed_file);
res = f_unlink(speed_file);
if (res == FR_OK)
{
file_created = 0U;
}
else
{
printf("fatfs speed test: remove failed (%d)\r\n", (int)res);
}
cleanup:
if (file_opened)
{
f_close(&SDFile);
}
if (is_mounted && file_created)
{
FRESULT unlink_res = f_unlink(speed_file);
if (unlink_res != FR_OK)
{
printf("fatfs speed test: cleanup remove %s failed (%d)\r\n", speed_file, (int)unlink_res);
}
}
if (is_mounted)
{
f_mount(NULL, (TCHAR const*)SDPath, 0);
printf("fatfs speed test: unmounted\r\n");
}
}
static void FATFS_Test(void)
{
const char test_file[] = "rocketpi.txt";
const char test_payload[] = "RocketPi FATFS SDIO write/read demo.\r\n";
char read_buffer[sizeof(test_payload)] = {0};
const UINT payload_len = (UINT)strlen(test_payload);
UINT bytes_written = 0;
UINT bytes_read = 0;
FRESULT res;
uint8_t is_mounted = 0;
uint8_t file_opened = 0;
printf("fatfs: mounting %s\r\n", SDPath);
res = f_mount(&SDFatFS, (TCHAR const*)SDPath, 1);
if (res == FR_OK)
{
is_mounted = 1;
}
else if (res == FR_NO_FILESYSTEM)
{
#if (_USE_MKFS == 1)
#if (FATFS_MKFS_BUFFER_SIZE < 1024U)
#error "FATFS_MKFS_BUFFER_SIZE must be >= 1024 bytes"
#endif
static uint8_t mkfs_work[FATFS_MKFS_BUFFER_SIZE];
printf("fatfs: no filesystem, formatting...\r\n");
res = f_mkfs((TCHAR const*)SDPath, FM_ANY, 0, mkfs_work, sizeof(mkfs_work));
if (res != FR_OK)
{
printf("fatfs: format failed (%d)\r\n", (int)res);
return;
}
printf("fatfs: format complete, remounting\r\n");
res = f_mount(&SDFatFS, (TCHAR const*)SDPath, 1);
if (res != FR_OK)
{
printf("fatfs: mount after format failed (%d)\r\n", (int)res);
return;
}
is_mounted = 1;
#else
printf("fatfs: no filesystem and mkfs disabled\r\n");
return;
#endif
}
else
{
printf("fatfs: mount failed (%d)\r\n", (int)res);
return;
}
printf("fatfs: creating %s\r\n", test_file);
res = f_open(&SDFile, test_file, FA_CREATE_ALWAYS | FA_WRITE);
if (res != FR_OK)
{
printf("fatfs: open for write failed (%d)\r\n", (int)res);
goto cleanup;
}
file_opened = 1;
res = f_write(&SDFile, test_payload, payload_len, &bytes_written);
if ((res != FR_OK) || (bytes_written != payload_len))
{
printf("fatfs: write failed (%d)\r\n", (int)res);
goto cleanup;
}
printf("fatfs: wrote %lu bytes\r\n", (unsigned long)bytes_written);
f_close(&SDFile);
file_opened = 0;
res = f_open(&SDFile, test_file, FA_READ);
if (res != FR_OK)
{
printf("fatfs: open for read failed (%d)\r\n", (int)res);
goto cleanup;
}
file_opened = 1;
memset(read_buffer, 0, sizeof(read_buffer));
res = f_read(&SDFile, read_buffer, sizeof(read_buffer) - 1, &bytes_read);
if (res != FR_OK)
{
printf("fatfs: read failed (%d)\r\n", (int)res);
goto cleanup;
}
printf("fatfs: read %lu bytes\r\n", (unsigned long)bytes_read);
f_close(&SDFile);
file_opened = 0;
if ((bytes_read == bytes_written) && (strncmp(read_buffer, test_payload, payload_len) == 0))
{
printf("fatfs: verification OK\r\n");
printf("fatfs: content: %s", read_buffer);
}
else
{
printf("fatfs: verification failed\r\n");
}
cleanup:
if (file_opened)
{
f_close(&SDFile);
}
if (is_mounted)
{
f_mount(NULL, (TCHAR const*)SDPath, 0);
printf("fatfs: unmounted\r\n");
}
}
/* 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 */
