ST / Mbed 2 deprecated DISCO-F469NI_SD_demo

SD card use for DISCO_F469NI basic example

Dependencies:   BSP_DISCO_F469NI SD_DISCO_F469NI mbed

main.cpp@3:336723c7a78c, 2017-07-05 (annotated)

Committer:
jeromecoutant
Date:
Wed Jul 05 06:43:53 2017 +0000
Revision:
3:336723c7a78c
Parent:
2:fdce3ea5ef35 
Update with MBED rev145

Who changed what in which revision?

UserRevisionLine numberNew contents of line
adustm 0:354f8b7c3755 1 #include "mbed.h"
adustm 0:354f8b7c3755 2 #include "SD_DISCO_F469NI.h"
adustm 0:354f8b7c3755 3
adustm 0:354f8b7c3755 4 SD_DISCO_F469NI sd;
adustm 0:354f8b7c3755 5
adustm 0:354f8b7c3755 6 DigitalOut led_green(LED1);
adustm 0:354f8b7c3755 7 DigitalOut led_red(LED2);
adustm 0:354f8b7c3755 8
adustm 0:354f8b7c3755 9 Serial pc(USBTX, USBRX);
adustm 0:354f8b7c3755 10
adustm 0:354f8b7c3755 11 #define BLOCK_START_ADDR 0 /* Block start address */
adustm 0:354f8b7c3755 12 #define NUM_OF_BLOCKS 5 /* Total number of blocks */
Jerome Coutant 2:fdce3ea5ef35 13 #define BUFFER_WORDS_SIZE ((512 * NUM_OF_BLOCKS) >> 2) /* Total data size in bytes */
adustm 0:354f8b7c3755 14
adustm 0:354f8b7c3755 15 uint32_t aTxBuffer[BUFFER_WORDS_SIZE];
adustm 0:354f8b7c3755 16 uint32_t aRxBuffer[BUFFER_WORDS_SIZE];
adustm 0:354f8b7c3755 17 /* Private function prototypes -----------------------------------------------*/
adustm 0:354f8b7c3755 18 void SD_main_test(void);
adustm 0:354f8b7c3755 19 void SD_Detection(void);
adustm 0:354f8b7c3755 20
adustm 0:354f8b7c3755 21 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
adustm 0:354f8b7c3755 22 static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength);
adustm 0:354f8b7c3755 23
adustm 0:354f8b7c3755 24 int main()
adustm 0:354f8b7c3755 25 {
Jerome Coutant 2:fdce3ea5ef35 26 uint8_t SD_state = MSD_OK;
adustm 0:354f8b7c3755 27 pc.printf("SD\n");
adustm 0:354f8b7c3755 28 pc.printf("This example shows how to write\n");
adustm 0:354f8b7c3755 29 pc.printf("and read data on the microSD and also\n");
adustm 0:354f8b7c3755 30 pc.printf("how to detect the presence of the card\n");
adustm 0:354f8b7c3755 31 led_red = 0;
adustm 0:354f8b7c3755 32
adustm 0:354f8b7c3755 33 SD_state = sd.Init();
Jerome Coutant 2:fdce3ea5ef35 34 if(SD_state != MSD_OK){
adustm 0:354f8b7c3755 35 if(SD_state == MSD_ERROR_SD_NOT_PRESENT){
adustm 0:354f8b7c3755 36 pc.printf("SD shall be inserted before running test\n");
adustm 0:354f8b7c3755 37 } else {
adustm 0:354f8b7c3755 38 pc.printf("SD Initialization : FAIL.\n");
adustm 0:354f8b7c3755 39 }
adustm 0:354f8b7c3755 40 pc.printf("SD Test Aborted.\n");
adustm 0:354f8b7c3755 41 } else {
adustm 0:354f8b7c3755 42 pc.printf("SD Initialization : OK.\n");
adustm 0:354f8b7c3755 43
Jerome Coutant 2:fdce3ea5ef35 44 if(sd.Erase(BLOCK_START_ADDR, (512 * NUM_OF_BLOCKS)) != MSD_OK){
adustm 0:354f8b7c3755 45 pc.printf("SD ERASE : FAILED.\n");
adustm 0:354f8b7c3755 46 pc.printf("SD Test Aborted.\n");
adustm 0:354f8b7c3755 47 } else {
adustm 0:354f8b7c3755 48 pc.printf("SD ERASE : OK.\n");
adustm 0:354f8b7c3755 49
adustm 0:354f8b7c3755 50 /* Fill the buffer to write */
adustm 0:354f8b7c3755 51 Fill_Buffer(aTxBuffer, BUFFER_WORDS_SIZE, 0x22FF);
adustm 0:354f8b7c3755 52
Jerome Coutant 2:fdce3ea5ef35 53 if(sd.WriteBlocks(aTxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT) != MSD_OK){
adustm 0:354f8b7c3755 54 pc.printf("SD WRITE : FAILED.\n");
adustm 0:354f8b7c3755 55 pc.printf("SD Test Aborted.\n");
adustm 0:354f8b7c3755 56 } else {
adustm 0:354f8b7c3755 57 pc.printf("SD WRITE : OK.\n");
adustm 0:354f8b7c3755 58
Jerome Coutant 2:fdce3ea5ef35 59 if(sd.ReadBlocks(aRxBuffer, BLOCK_START_ADDR, NUM_OF_BLOCKS, SD_DATATIMEOUT)!= MSD_OK){
adustm 0:354f8b7c3755 60 pc.printf("SD READ : FAILED.\n");
adustm 0:354f8b7c3755 61 pc.printf("SD Test Aborted.\n");
adustm 0:354f8b7c3755 62 } else {
adustm 0:354f8b7c3755 63 pc.printf("SD READ : OK.\n");
adustm 0:354f8b7c3755 64 if(Buffercmp(aTxBuffer, aRxBuffer, BUFFER_WORDS_SIZE) > 0){
adustm 0:354f8b7c3755 65 pc.printf("SD COMPARE : FAILED.\n");
adustm 0:354f8b7c3755 66 pc.printf("SD Test Aborted.\n");
adustm 0:354f8b7c3755 67 } else {
adustm 0:354f8b7c3755 68 pc.printf("SD Test : OK.\n");
adustm 0:354f8b7c3755 69 pc.printf("SD can be removed.\n");
adustm 0:354f8b7c3755 70 }
adustm 0:354f8b7c3755 71 }
adustm 0:354f8b7c3755 72 }
adustm 0:354f8b7c3755 73 }
adustm 0:354f8b7c3755 74 }
adustm 0:354f8b7c3755 75
adustm 0:354f8b7c3755 76 while (1) {
adustm 0:354f8b7c3755 77 }
adustm 0:354f8b7c3755 78 }
adustm 0:354f8b7c3755 79
adustm 0:354f8b7c3755 80 /**
adustm 0:354f8b7c3755 81 * @brief Fills buffer with user predefined data.
adustm 0:354f8b7c3755 82 * @param pBuffer: pointer on the buffer to fill
adustm 0:354f8b7c3755 83 * @param uwBufferLenght: size of the buffer to fill
adustm 0:354f8b7c3755 84 * @param uwOffset: first value to fill on the buffer
adustm 0:354f8b7c3755 85 * @retval None
adustm 0:354f8b7c3755 86 */
adustm 0:354f8b7c3755 87 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset)
adustm 0:354f8b7c3755 88 {
adustm 0:354f8b7c3755 89 uint32_t tmpIndex = 0;
adustm 0:354f8b7c3755 90
adustm 0:354f8b7c3755 91 /* Put in global buffer different values */
adustm 0:354f8b7c3755 92 for (tmpIndex = 0; tmpIndex < uwBufferLength; tmpIndex++ )
adustm 0:354f8b7c3755 93 {
adustm 0:354f8b7c3755 94 pBuffer[tmpIndex] = tmpIndex + uwOffset;
adustm 0:354f8b7c3755 95 }
adustm 0:354f8b7c3755 96 }
adustm 0:354f8b7c3755 97
adustm 0:354f8b7c3755 98 /**
adustm 0:354f8b7c3755 99 * @brief Compares two buffers.
adustm 0:354f8b7c3755 100 * @param pBuffer1, pBuffer2: buffers to be compared.
adustm 0:354f8b7c3755 101 * @param BufferLength: buffer's length
adustm 0:354f8b7c3755 102 * @retval 1: pBuffer identical to pBuffer1
adustm 0:354f8b7c3755 103 * 0: pBuffer differs from pBuffer1
adustm 0:354f8b7c3755 104 */
adustm 0:354f8b7c3755 105 static uint8_t Buffercmp(uint32_t* pBuffer1, uint32_t* pBuffer2, uint16_t BufferLength)
adustm 0:354f8b7c3755 106 {
adustm 0:354f8b7c3755 107 while (BufferLength--)
adustm 0:354f8b7c3755 108 {
adustm 0:354f8b7c3755 109 if (*pBuffer1 != *pBuffer2)
adustm 0:354f8b7c3755 110 {
adustm 0:354f8b7c3755 111 return 1;
adustm 0:354f8b7c3755 112 }
adustm 0:354f8b7c3755 113
adustm 0:354f8b7c3755 114 pBuffer1++;
adustm 0:354f8b7c3755 115 pBuffer2++;
adustm 0:354f8b7c3755 116 }
adustm 0:354f8b7c3755 117
adustm 0:354f8b7c3755 118 return 0;
adustm 0:354f8b7c3755 119 }