mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
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291 lines
10 KiB
C
291 lines
10 KiB
C
/**
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******************************************************************************
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* @file FatFs/FatFs_MultiDrives/Src/main.c
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* @author MCD Application Team
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* @brief Main program body
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* This sample code shows how to use FatFs with multi drives.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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FATFS RAMFatFs, SDFatFs; /* File system objects logical drives */
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FIL RAMFile, SDFile; /* File objects */
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char RAMpath[4], SDpath[4]; /* RAM disk and SD card logical drives paths */
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static uint8_t buffer[_MAX_SS]; /* a work buffer for the f_mkfs() */
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static void Error_Handler(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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FRESULT res1, res2; /* FatFs function common result codes */
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uint32_t byteswritten1, byteswritten2; /* File write counts */
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uint32_t bytesread1, bytesread2; /* File read counts */
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uint8_t wtext[] = "This is STM32 working with FatFs"; /* File write buffer */
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uint8_t rtext1[100], rtext2[100]; /* File read buffers */
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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- Global MSP (MCU Support Package) initialization
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*/
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HAL_Init();
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/* Configure the system clock to 175 MHz */
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SystemClock_Config();
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/* Initialize Mfx for SD detection */
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BSP_IO_Init();
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/* Configure LED1 and LED3 */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED3);
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/*##-1- Link the disk I/O drivers ##########################################*/
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if((FATFS_LinkDriver(&SDRAMDISK_Driver, RAMpath) == 0) && (FATFS_LinkDriver(&SD_Driver, SDpath) == 0))
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{
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/*##-2- Register the file system object to the FatFs module ##############*/
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res1 = f_mount(&RAMFatFs, (TCHAR const*)RAMpath, 0);
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res2 = f_mount(&SDFatFs, (TCHAR const*)SDpath, 0);
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if((res1 != FR_OK) || (res2 != FR_OK))
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{
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/* FatFs Initialization Error */
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Error_Handler();
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}
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else
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{
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/*##-3- Create a FAT file system (format) on the logical drives ########*/
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/* WARNING: Formatting the uSD card will delete all content on the device */
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res1 = f_mkfs((TCHAR const*)RAMpath, FM_ANY, 0, buffer, sizeof(buffer));
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res2 = f_mkfs((TCHAR const*)SDpath, FM_ANY, 0, buffer, sizeof(buffer));
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if((res1 != FR_OK) || (res2 != FR_OK))
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{
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/* FatFs Format Error */
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Error_Handler();
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}
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else
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{
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/*##-4- Create and Open new text file objects with write access ######*/
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res1 = f_open(&RAMFile, "0:STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE);
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res2 = f_open(&SDFile, "1:STM32.TXT", FA_CREATE_ALWAYS | FA_WRITE);
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if((res1 != FR_OK) || (res2 != FR_OK))
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{
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/* 'STM32.TXT' file Open for write Error */
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Error_Handler();
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}
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else
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{
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/*##-5- Write data to the text files ###############################*/
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res1 = f_write(&RAMFile, wtext, sizeof(wtext), (void *)&byteswritten1);
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res2 = f_write(&SDFile, wtext, sizeof(wtext), (void *)&byteswritten2);
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if((byteswritten1 == 0) || (byteswritten2 == 0) || (res1 != FR_OK) || (res2 != FR_OK))
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{
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/* 'STM32.TXT' file write Error */
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Error_Handler();
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}
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else
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{
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/*##-6- Close the open text files ################################*/
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f_close(&RAMFile);
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f_close(&SDFile);
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/*##-7- Open the text files object with read access ##############*/
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res1 = f_open(&RAMFile, "0:STM32.TXT", FA_READ);
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res2 = f_open(&SDFile, "1:STM32.TXT", FA_READ);
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if((res1 != FR_OK) || (res2 != FR_OK))
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{
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/* 'STM32.TXT' file Open for read Error */
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Error_Handler();
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}
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else
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{
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/*##-8- Read data from the text files ##########################*/
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res1 = f_read(&RAMFile, rtext1, sizeof(rtext1), (UINT*)&bytesread1);
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res2 = f_read(&SDFile, rtext2, sizeof(rtext2), (UINT*)&bytesread2);
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if((res1 != FR_OK) || (res2 != FR_OK))
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{
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/* 'STM32.TXT' file Read or EOF Error */
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Error_Handler();
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}
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else
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{
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/*##-9- Close the open text files ############################*/
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f_close(&RAMFile);
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f_close(&SDFile);
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/*##-10- Compare read data with the expected data ############*/
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if((bytesread1 != byteswritten1) || (bytesread2 != byteswritten2))
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{
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/* Read data is different from the expected data */
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Error_Handler();
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}
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else
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{
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/* Success of the demo: no error occurrence */
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BSP_LED_On(LED1);
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}
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}
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}
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}
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}
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}
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}
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}
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/*##-11- Unlink the disk I/O drivers #######################################*/
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FATFS_UnLinkDriver(RAMpath);
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FATFS_UnLinkDriver(SDpath);
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/* Infinite loop */
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while (1)
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{
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}
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 180000000
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* HCLK(Hz) = 180000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 8000000
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* PLL_M = 8
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* PLL_N = 360
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* PLL_P = 2
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* PLL_Q = 7
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* The SD clock configuration from PLLSAI:
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* PLLSAIM = 8
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* PLLSAIN = 384
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* PLLSAIP = 8
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_PeriphCLKInitTypeDef RCC_PeriphClkInitStruct;
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HAL_StatusTypeDef ret = HAL_OK;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* The voltage scaling allows optimizing the power consumption when the device is
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clocked below the maximum system frequency, to update the voltage scaling value
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regarding system frequency refer to product datasheet. */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 8;
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RCC_OscInitStruct.PLL.PLLN = 360;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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RCC_OscInitStruct.PLL.PLLR = 2;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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/* Activate the OverDrive to reach the 180 MHz Frequency */
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ret = HAL_PWREx_EnableOverDrive();
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if(ret != HAL_OK)
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{
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Error_Handler();
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}
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/* Select PLLSAI output as SD clock source */
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RCC_PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SDIO | RCC_PERIPHCLK_CK48;
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RCC_PeriphClkInitStruct.SdioClockSelection = RCC_SDIOCLKSOURCE_CK48;
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RCC_PeriphClkInitStruct.Clk48ClockSelection = RCC_CK48CLKSOURCE_PLLSAIP;
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RCC_PeriphClkInitStruct.PLLSAI.PLLSAIM = 8;
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RCC_PeriphClkInitStruct.PLLSAI.PLLSAIN = 384;
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RCC_PeriphClkInitStruct.PLLSAI.PLLSAIP = RCC_PLLSAIP_DIV8;
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HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInitStruct);
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
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if(ret != HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while(1)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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