SDCard (with SDMMC interface) demo using ST BSP driver.
main.cpp
- Committer:
- bcostm
- Date:
- 2018-04-26
- Revision:
- 1:2b4442b30a9e
- Parent:
- 0:c1aa0132b74f
File content as of revision 1:2b4442b30a9e:
#include "mbed.h" #include "stm32l496g_discovery.h" #include "stm32l496g_discovery_lcd.h" #include "stm32l496g_discovery_sd.h" #define NUM_OF_BLOCKS 5 #define BLOCK_START_ADDR 0 #define BLOCK_SIZE 512 #define BLOCK_END_ADDR (BLOCK_SIZE * NUM_OF_BLOCKS) #define BUFFER_WORDS_SIZE ((BLOCK_SIZE * NUM_OF_BLOCKS) >> 2) // Total data size in bytes uint32_t aTxBuffer[BUFFER_WORDS_SIZE]; uint32_t aRxBuffer[BUFFER_WORDS_SIZE]; static void print_demo_title(void); static void print_PASS(void); static void print_FAIL(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); int main() { uint8_t status; print_demo_title(); wait(0.2); // Initialization status = BSP_SD_Init(); if (status == MSD_OK) { BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD INIT OK", LEFT_MODE); } else if (status == MSD_ERROR_SD_NOT_PRESENT) { BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD CARD NOT FOUND", LEFT_MODE); print_FAIL(); } else { BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SD INIT FAIL", LEFT_MODE); print_FAIL(); } // Erase status = BSP_SD_Erase(BLOCK_START_ADDR, BLOCK_END_ADDR); if (status == MSD_OK) { BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SD ERASE OK", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SD ERASE FAIL", LEFT_MODE); print_FAIL(); } // Prepare the buffer to write Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF); // Write status = BSP_SD_WriteBlocks(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT); if (status == MSD_OK) { BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SD WRITE OK", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SD WRITE FAIL", LEFT_MODE); print_FAIL(); } // Read status = BSP_SD_ReadBlocks(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT); if (status == MSD_OK) { BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SD READ OK", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SD READ FAIL", LEFT_MODE); print_FAIL(); } // Compare data if (Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) == 0) { BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)"SD DATA OK", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)"SD DATA FAIL", LEFT_MODE); print_FAIL(); } print_PASS(); } static void print_demo_title(void) { BSP_LCD_Init(); BSP_LCD_Clear(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SDCARD", CENTER_MODE); BSP_LCD_SetFont(&Font12); BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows how to write", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"and read data on the SDCard", CENTER_MODE); BSP_LCD_SetFont(&Font20); } static void print_PASS(void) { BSP_LCD_SetTextColor(LCD_COLOR_BLACK); BSP_LCD_SetBackColor(LCD_COLOR_GREEN); BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)"Demo OK", CENTER_MODE); while(1); } static void print_FAIL(void) { BSP_LCD_SetBackColor(LCD_COLOR_RED); BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)"Demo FAILED", CENTER_MODE); while(1); } /** * @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 uwBufferLength, uint32_t uwOffset) { uint32_t tmpIndex = 0; /* Put in global buffer different values */ for (tmpIndex = 0; tmpIndex < uwBufferLength; tmpIndex++ ) { pBuffer[tmpIndex] = tmpIndex + uwOffset; } } /** * @brief Compares two buffers. * @param pBuffer1, pBuffer2: buffers to be compared. * @param BufferLength: buffer's length * @retval 0: pBuffer2 identical to pBuffer1 * 1: pBuffer2 differs from pBuffer1 */ static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength) { while (BufferLength--) { if (*pBuffer1 != *pBuffer2) { return 1; } pBuffer1++; pBuffer2++; } return 0; }