249 lines
7.8 KiB
C
249 lines
7.8 KiB
C
/**
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******************************************************************************
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* @file sd.c
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* @author MCD Application Team
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* @brief This example code shows how to use the SD Driver
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 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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/** @addtogroup STM32F0xx_HAL_Examples
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* @{
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*/
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/** @addtogroup BSP
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define BLOCK_START_ADDR 0 /* Block start address */
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#define BLOCKSIZE 512 /* Block Size in Bytes */
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#define NUM_OF_BLOCKS 5 /* Total number of blocks */
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#define BUFFER_WORDS_SIZE ((BLOCKSIZE * NUM_OF_BLOCKS) >> 2) /* Total data size in bytes */
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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uint32_t aTxBuffer[BUFFER_WORDS_SIZE];
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uint32_t aRxBuffer[BUFFER_WORDS_SIZE];
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SD_CardInfo CardInfo;
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/* Private function prototypes -----------------------------------------------*/
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static void SD_SetHint(void);
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static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
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static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief SD Demo
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* @param None
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* @retval None
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*/
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void SD_demo (void)
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{
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uint8_t SD_state = MSD_OK;
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__IO uint8_t prev_status = 0;
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SD_SetHint();
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SD_state = BSP_SD_Init();
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/* Check if the SD card is plugged in the slot */
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if(BSP_SD_IsDetected() == SD_PRESENT)
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{
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BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
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BSP_LCD_DisplayStringAt(20, BSP_LCD_GetYSize()-30, (uint8_t *)"SD Connected ", LEFT_MODE);
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}
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else
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{
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(20, BSP_LCD_GetYSize()-30, (uint8_t *)"SD Not Connected", LEFT_MODE);
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}
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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if(SD_state != MSD_OK)
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{
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BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SD INITIALIZATION : FAIL.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SD INITIALIZATION : OK.", LEFT_MODE);
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SD_state = BSP_SD_GetCardInfo(&CardInfo);
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if(SD_state != MSD_OK)
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{
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BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SD GET CARD INFO : FAIL.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SD GET CARD INFO : OK.", LEFT_MODE);
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SD_state = BSP_SD_Erase(BLOCK_START_ADDR, (BLOCKSIZE * NUM_OF_BLOCKS));
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/* Verify that SD card is ready to use after the Erase */
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SD_state |= BSP_SD_GetStatus();
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if(SD_state != MSD_OK)
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{
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BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SD ERASE : FAILED.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SD ERASE : OK.", LEFT_MODE);
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/* Fill the buffer to write */
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Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF);
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SD_state = BSP_SD_WriteBlocks((uint32_t *)aTxBuffer, BLOCK_START_ADDR, BLOCKSIZE, NUM_OF_BLOCKS);
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if(SD_state != MSD_OK)
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{
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BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SD WRITE : FAILED.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SD WRITE : OK.", LEFT_MODE);
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SD_state = BSP_SD_ReadBlocks((uint32_t *)aRxBuffer, BLOCK_START_ADDR, BLOCKSIZE, NUM_OF_BLOCKS);
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if(SD_state != MSD_OK)
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{
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BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SD READ : FAILED.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SD READ : OK.", LEFT_MODE);
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if(Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0)
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{
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BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"SD COMPARE : FAILED.", LEFT_MODE);
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BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SD Test Aborted.", LEFT_MODE);
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}
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else
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{
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BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"SD TEST : OK.", LEFT_MODE);
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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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while (1)
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{
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/* Check if the SD card is plugged in the slot */
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if(BSP_SD_IsDetected() != SD_PRESENT)
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{
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if(prev_status == 0)
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{
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prev_status = 1;
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BSP_LCD_SetTextColor(LCD_COLOR_RED);
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BSP_LCD_DisplayStringAt(20, BSP_LCD_GetYSize()-30, (uint8_t *)"SD Not Connected", LEFT_MODE);
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}
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}
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else if (prev_status == 1)
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{
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BSP_SD_Init();
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BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
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BSP_LCD_DisplayStringAt(20, BSP_LCD_GetYSize()-30, (uint8_t *)"SD Connected ", LEFT_MODE);
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prev_status = 0;
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}
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if(CheckForUserInput() > 0)
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{
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return;
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}
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}
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}
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/**
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* @brief Display SD Demo Hint
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* @param None
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* @retval None
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*/
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static void SD_SetHint(void)
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{
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/* Clear the LCD */
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BSP_LCD_Clear(LCD_COLOR_WHITE);
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/* Set LCD Demo description */
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
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BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
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BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
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BSP_LCD_SetFont(&Font24);
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BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SD", CENTER_MODE);
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BSP_LCD_SetFont(&Font12);
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BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows how to write", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"and read data on the microSD and also", CENTER_MODE);
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BSP_LCD_DisplayStringAt(0, 60, (uint8_t *)"how to detect the presence of the card", CENTER_MODE);
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/* Set the LCD Text Color */
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
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BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100);
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BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102);
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BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
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BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
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}
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/**
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* @brief Fills buffer with user predefined data.
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* @param pBuffer: pointer on the buffer to fill
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* @param uwBufferLenght: size of the buffer to fill
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* @param uwOffset: first value to fill on the buffer
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* @retval None
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*/
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static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset)
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{
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uint32_t tmpIndex = 0;
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/* Put in global buffer different values */
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for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++ )
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{
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pBuffer[tmpIndex] = tmpIndex + uwOffset;
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}
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}
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/**
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* @brief Compares two buffers.
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* @param pBuffer1, pBuffer2: buffers to be compared.
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* @param BufferLength: buffer's length
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* @retval 1: pBuffer identical to pBuffer1
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* 0: pBuffer differs from pBuffer1
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*/
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static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength)
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{
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while (BufferLength--)
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{
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if (*pBuffer1 != *pBuffer2)
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{
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return 1;
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}
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pBuffer1++;
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pBuffer2++;
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}
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return 0;
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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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