Diff: main.cpp

Revision:

2:ad4601e7074a

Parent:

0:bdbd3d6fc5d5

--- a/main.cpp	Tue May 16 05:18:55 2017 +0000
+++ b/main.cpp	Tue Oct 09 00:52:07 2018 +0000
@@ -1,19 +1,55 @@
 #include "mbed.h"
 #include "SDFileSystem.h"
- 
-SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
- 
-int main() {
-    printf("Hello World!\n");   
- 
+
+SDFileSystem sd(p11, p12, p13, p14, "sd"); // the pinout on the mbed Cool Components workshop board
+
+FILE * pFile;
+long lSize;
+char * buffer;
+size_t result;
+
+int main()
+{
+    printf("Hello World!\n");
+
     mkdir("/sd/mydir", 0777);
-    
+
     FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
     if(fp == NULL) {
         error("Could not open file for write\n");
     }
-    fprintf(fp, "Hello fun SD Card World!");
-    fclose(fp); 
- 
+    fprintf(fp, "Hello SD file world");
+    fclose(fp);
+
+    pFile = fopen ( "/sd/mydir/sdtest.txt" , "r" );
+    if (pFile==NULL) {
+        error ("File error");
+    }
+
+    // obtain file size:
+    fseek (pFile , 0 , SEEK_END);
+    lSize = ftell (pFile);
+    rewind (pFile);
+
+    // allocate memory to contain the whole file:
+    buffer = (char*) malloc (sizeof(char)*lSize);
+    if (buffer == NULL) {
+        error ("Memory error");
+    }
+
+    // copy the file into the buffer:
+    result = fread (buffer,1,lSize,pFile);
+    if (result != lSize) {
+        error ("Reading error");
+        exit (3);
+    }
+
+    /* the whole file is now loaded in the memory buffer. */
+    printf(buffer);
+
+    // terminate
+    fclose (pFile);
+    free (buffer);
+
     printf("Goodbye World!\n");
 }