Revision 6:09923c817679, committed 2015-06-15

Comitter:

pradeepvk2208

Date:

Mon Jun 15 13:37:24 2015 +0000

Parent:

5:e13062be9e7b

Commit message:

sd_card_raw

Changed in this revision

diff -r e13062be9e7b -r 09923c817679 main.cpp
--- a/main.cpp	Sat Jun 13 10:30:01 2015 +0000
+++ b/main.cpp	Mon Jun 15 13:37:24 2015 +0000
@@ -43,28 +43,38 @@
 SPI spi(PTD6, PTD7, PTD5); // mosi, miso, sclk
 DigitalOut cs(PTD2);
 int count_bro;
-char alpha[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
+char alpha[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y',' '};
 int block_number;
 
 
 int main()
 {
+    Timer t;
     
      initialise_card();
       int result= initialise_card();
-      printf("initialise card result=%d\n",result);
+      printf("initialise card result=%d \r\n",result);
       disk_initialize();
        uint8_t buffer[512];
+
        for(block_number=0;block_number<100;block_number++)
      { for(count_bro=0;count_bro<512;count_bro++)
       {buffer[count_bro]= alpha[rand () % 26];}
-      disk_write(buffer, block_number);}
+      t.start();
+      disk_write(buffer, block_number);
+      t.stop();
+      printf("Time taken to write 1 block is %f \r\n",t.read());
+      t.reset();}
       uint8_t read_data[512];
       for(block_number=0;block_number<100;block_number++)
-      {disk_read(read_data, block_number);
+      {t.start();
+      disk_read(read_data, block_number);
+      t.stop();
+       printf("Time taken to read 1 block is %f \r\n",t.read());
+       t.reset();
       for(count_bro=0;count_bro<512;count_bro++)
       {printf("%c",read_data[count_bro]);}
-      printf("\n");}
+      printf("\r\n");}
       
       
     
@@ -90,11 +100,11 @@
  // send CMD8 to determine whther it is ver 2.x
     int r = cmd8();
     if (r == R1_IDLE_STATE) {
-        printf("Entering v2 bro\n");
+        //printf("Entering v2 bro\n");
         return initialise_card_v2();
         
     } else if (r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) {
-        printf("Entering v1 bro\n");
+       // printf("Entering v1 bro\n");
         return initialise_card_v1();
         
     } else {
@@ -346,7 +356,7 @@
     }
     else
     {
-        printf("Hey,block init succesful\n");
+      //  printf("Hey,block init succesful\n");
     }
     
     spi.frequency(1000000); // Set to 1MHz for data transfer
@@ -363,7 +373,6 @@
     
     // send the data block
     write(buffer, 512);
-    printf("Written Successfully bro \n");
     return 0;
 }