BSP
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Outline
Includes
#include "main.h"
Private define
#define BLOCK_START_ADDR
#define BLOCKSIZE
#define NUM_OF_BLOCKS
#define BUFFER_WORDS_SIZE
#define SD_OK
Private variables
aTxBuffer
aRxBuffer
Private function prototypes
SD_demo()
SD_SetHint()
Fill_Buffer(uint32_t *, uint32_t, uint32_t)
Buffercmp(uint32_t *, uint32_t *, uint16_t)
Files
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SourceVuSTM32 Libraries and SamplesBSPSrc/sd.c
 
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/** ****************************************************************************** * @file BSP/Src/sd.c * @author MCD Application Team * @brief This example code shows how to use the SD Driver ****************************************************************************** * @attention * * Copyright (c) 2017 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. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ *//* ... */ /** @addtogroup BSP * @{ *//* ... */ Includes /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ #define BLOCK_START_ADDR 0 /* Block start address */ #define BLOCKSIZE 512 /* Block Size in Bytes */ #define NUM_OF_BLOCKS 2 /* Total number of blocks */ #define BUFFER_WORDS_SIZE ((BLOCKSIZE * NUM_OF_BLOCKS) >> 2) /* Total data size in bytes */ /*tmp */ #define SD_OK 0 5 defines/* Private macro -------------------------------------------------------------*/Private define /* Private variables ---------------------------------------------------------*/ uint32_t aTxBuffer[BUFFER_WORDS_SIZE]; uint32_t aRxBuffer[BUFFER_WORDS_SIZE]; Private variables /* Private function prototypes -----------------------------------------------*/ static void SD_SetHint(void); static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset); static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength); Private function prototypes /* Private functions ---------------------------------------------------------*/ /** * @brief SD Demo * @param None * @retval None *//* ... */ void SD_demo (void) { uint8_t SD_state = SD_OK; SD_SetHint(); SD_state = BSP_SD_Init(); if(SD_state != SD_OK) { BSP_LCD_DisplayStringAt(5, 90, (uint8_t *)"SD Initialization", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 105, (uint8_t *)" FAILED", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 120, (uint8_t *)"SD Test Aborted.", LEFT_MODE); }if (SD_state != SD_OK) { ... } else { BSP_LCD_DisplayStringAt(5, 75, (uint8_t *)"SD Init : OK.", LEFT_MODE); SD_state = BSP_SD_Erase(BLOCK_START_ADDR, NUM_OF_BLOCKS); if(SD_state != SD_OK) { BSP_LCD_DisplayStringAt(5, 90, (uint8_t *)"SD ERASE : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 105, (uint8_t *)"SD Test Aborted.", LEFT_MODE); }if (SD_state != SD_OK) { ... } else { BSP_LCD_DisplayStringAt(5, 90, (uint8_t *)"SD ERASE : OK.", LEFT_MODE); /* Fill the buffer to write */ Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF); SD_state = BSP_SD_WriteBlocks(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, 1); if(SD_state != SD_OK) { BSP_LCD_DisplayStringAt(5, 105, (uint8_t *)"SD WRITE : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 120, (uint8_t *)"SD Test Aborted.", LEFT_MODE); }if (SD_state != SD_OK) { ... } else { BSP_LCD_DisplayStringAt(5, 105, (uint8_t *)"SD WRITE : OK.", LEFT_MODE); SD_state = BSP_SD_ReadBlocks(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, 1); if(SD_state != SD_OK) { BSP_LCD_DisplayStringAt(5, 120, (uint8_t *)"SD READ : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 135, (uint8_t *)"SD Test Aborted.", LEFT_MODE); }if (SD_state != SD_OK) { ... } else { BSP_LCD_DisplayStringAt(5, 120, (uint8_t *)"SD READ : OK.", LEFT_MODE); if(Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0) { BSP_LCD_DisplayStringAt(5, 135, (uint8_t *)"SD COMPARE : FAILED.", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 150, (uint8_t *)"SD Test Aborted.", LEFT_MODE); }if (Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0) { ... } else { BSP_LCD_DisplayStringAt(5, 135, (uint8_t *)"SD Test : OK.", LEFT_MODE); BSP_LCD_DisplayStringAt(5, 150, (uint8_t *)"SD can be removed.", LEFT_MODE); }else { ... } }else { ... } }else { ... } }else { ... } }else { ... } while (1) { if(CheckForUserInput() > 0) { /* BSP_SD_DeInit(); */ return; }if (CheckForUserInput() > 0) { ... } }while (1) { ... } }{ ... } /** * @brief Display SD Demo Hint * @param None * @retval None *//* ... */ static void SD_SetHint(void) { /* Clear the LCD */ BSP_LCD_Clear(LCD_COLOR_WHITE); /* Set SD Demo description */ BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 55); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_SetFont(&Font12); BSP_LCD_DisplayStringAt(0, 10, (uint8_t *)"SD Demo", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 25, (uint8_t *)"Shows how to write", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 40, (uint8_t *)"& read data on SD", CENTER_MODE); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_SetBackColor(LCD_COLOR_WHITE); }{ ... } /** * @brief Fills buffer with user predefined data. * @param pBuffer: pointer on the buffer to fill * @param uwBufferLenght: size of the buffer to fill * @param uwOffset: first value to fill on the buffer * @retval None *//* ... */ static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset) { uint32_t tmpIndex = 0; /* Put in global buffer different values */ for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++ ) { pBuffer[tmpIndex] = tmpIndex + uwOffset; }for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++) { ... } }{ ... } /** * @brief Compares two buffers. * @param pBuffer1, pBuffer2: buffers to be compared. * @param BufferLength: buffer's length * @retval 1: pBuffer identical to pBuffer1 * 0: pBuffer differs from pBuffer1 *//* ... */ static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength) { while (BufferLength--) { if (*pBuffer1 != *pBuffer2) { return 1; }if (*pBuffer1 != *pBuffer2) { ... } pBuffer1++; pBuffer2++; }while (BufferLength--) { ... } return 0; }{ ... } /** * @} *//* ... */ /** * @} *//* ... */
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