main.cpp

00001 #include "mbed.h"
00002 #include "SD_DISCO_F469NI.h"
00003  
00004 SD_DISCO_F469NI sd;
00005  
00006 DigitalOut led_green(LED1);
00007 DigitalOut led_red(LED2);
00008 
00009 Serial pc(USBTX, USBRX);
00010  
00011 #define BLOCK_START_ADDR         0     /* Block start address      */
00012 #define NUM_OF_BLOCKS            5     /* Total number of blocks   */
00013 #define BUFFER_WORDS_SIZE        ((512 * NUM_OF_BLOCKS) >> 2) /* Total data size in bytes */
00014  
00015 uint32_t aTxBuffer[BUFFER_WORDS_SIZE];
00016 uint32_t aRxBuffer[BUFFER_WORDS_SIZE];
00017 /* Private function prototypes -----------------------------------------------*/
00018 void SD_main_test(void);
00019 void SD_Detection(void);
00020 
00021 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
00022 static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength);
00023  
00024 int main() {
00025     uint8_t SD_state = MSD_OK;
00026     pc.printf("SD\n");
00027     pc.printf("This example shows how to write\n");
00028     pc.printf("and read data on the microSD and also\n");
00029     pc.printf("how to detect the presence of the card\n");
00030     led_red = 0;
00031   
00032     SD_state = sd.Init();
00033     if(SD_state != MSD_OK){
00034         if(SD_state == MSD_ERROR_SD_NOT_PRESENT){
00035             pc.printf("SD shall be inserted before running test\n");
00036         } else {
00037             pc.printf("SD Initialization : FAIL.\n");
00038         }
00039         pc.printf("SD Test Aborted.\n");
00040     } else {
00041         pc.printf("SD Initialization : OK.\n");
00042 
00043         if(sd.Erase(BLOCK_START_ADDR, (512 * NUM_OF_BLOCKS)) != MSD_OK){
00044             pc.printf("SD ERASE : FAILED.\n");
00045             pc.printf("SD Test Aborted.\n");
00046         } else {
00047             pc.printf("SD ERASE : OK.\n");
00048           
00049             /* Fill the buffer to write */
00050             Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF);
00051           
00052             if(sd.WriteBlocks(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT) != MSD_OK){
00053                 pc.printf("SD WRITE : FAILED.\n");
00054                 pc.printf("SD Test Aborted.\n");
00055             } else {
00056                 pc.printf("SD WRITE : OK.\n");
00057             
00058                 if(sd.ReadBlocks(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT)!= MSD_OK){
00059                     pc.printf("SD READ : FAILED.\n");
00060                     pc.printf("SD Test Aborted.\n");
00061                 } else {
00062                     pc.printf("SD READ : OK.\n");
00063                     if(Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0){
00064                         pc.printf("SD COMPARE : FAILED.\n");
00065                         pc.printf("SD Test Aborted.\n");
00066                     } else {
00067                         pc.printf("SD Test : OK.\n");
00068                         pc.printf("SD can be removed.\n");
00069                     }
00070                 }
00071             }
00072         }
00073     }
00074   
00075    // while (1) {}
00076 } 
00077 
00078 /**
00079   * @brief  Fills buffer with user predefined data.
00080   * @param  pBuffer: pointer on the buffer to fill
00081   * @param  uwBufferLenght: size of the buffer to fill
00082   * @param  uwOffset: first value to fill on the buffer
00083   * @retval None
00084   */
00085 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset) {
00086   uint32_t tmpIndex = 0;
00087 
00088   /* Put in global buffer different values */
00089   for (tmpIndex = 0; tmpIndex < uwBufferLength; tmpIndex++ ){
00090     pBuffer[tmpIndex] = tmpIndex + uwOffset;
00091   }
00092 }
00093  
00094 /**
00095   * @brief  Compares two buffers.
00096   * @param  pBuffer1, pBuffer2: buffers to be compared.
00097   * @param  BufferLength: buffer's length
00098   * @retval 1: pBuffer identical to pBuffer1
00099   *         0: pBuffer differs from pBuffer1
00100   */
00101 static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength) {
00102   while (BufferLength--) {
00103     if (*pBuffer1 != *pBuffer2) {
00104       return 1;
00105     }
00106 
00107     pBuffer1++;
00108     pBuffer2++;
00109   }
00110 
00111   return 0;
00112 }