Diff: main.cpp

Revision:

4:68cb56ba60c6

Parent:

3:017b99069995

--- a/main.cpp	Mon Jun 29 03:38:40 2015 +0000
+++ b/main.cpp	Thu Jul 02 07:37:06 2015 +0000
@@ -10,24 +10,34 @@
 #define MAX_SIZE 100 
 SDFileSystem sd(MOSI, MISO, CLK, SEL, "sd"); // the pinout on the mbed Cool Components workshop board
 
-char sdread[MAX_SIZE];
+
 int main() {
-    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); 
-    
-    printf("Reading from SD card...\r\n");
-    fp = fopen("/sd/mydir/sdtest.txt", "r");
-    if (fp != NULL) {
-         fgets(sdread,MAX_SIZE,fp);
-         printf("%s", sdread);
-        fclose(fp);
-    } else {
-        printf("failed!\n");
-    }
+
+        char str[MAX_SIZE];
+        mkdir("/sd/mydir", 0777);
+        //"w" : {Write) - Create an empty file for output operations. If a file with the same name already exists, its contents are discarded and the file is treated as a new empty file.
+        //"a+" :(append/update) -  open (or create if the file does not exist) for update at the end of the file
+        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!");
+        printf("Insert data:");
+        scanf("%s",str);
+        printf("\r\n");
+        fflush(stdin);
+        fprintf(fp,"%s", str);
+        fclose(fp); 
+        
+        printf("Reading from SD card...\r\n");
+        fp = fopen("/sd/mydir/sdtest.txt", "r");
+        if (fp != NULL) {
+             fgets(str,MAX_SIZE,fp);
+             printf("%s", str);
+             printf("\r\n");
+            fclose(fp);
+        } else {
+            printf("failed!\n");
+        }
+        
 }