Diff: source/sdcard.cpp

Revision:

90:d0805b58b0ae

Parent:

81:a869abf56e85

Child:

94:b24d2b432b27

--- a/source/sdcard.cpp	Mon Apr 09 15:05:43 2018 +0000
+++ b/source/sdcard.cpp	Mon Apr 09 15:43:45 2018 +0000
@@ -704,6 +704,61 @@
     return buff;
 }
 
+char *read_Inventory()
+{
+    static char    *buff;
+    long    numbytes;
+
+    char filepath[] = "/sd/protocol/medInventory.txt";
+
+
+    //Configure CRC, large frames, and write validation
+    sd.crc(true);
+    sd.large_frames(true);
+    sd.write_validation(true);
+
+    //mount SD card
+    printf("\n\rMounting SD card...");
+    if (sd.mount() != 0) {
+        printf("failed!\n\r");
+        return NULL;
+    }
+    printf("success!\n\r");
+
+    //open file for read
+    printf("open file %s...",filepath);
+    FILE *fp = fopen(filepath, "r");
+    if(fp == NULL) {
+        printf("failed!\n\r");
+        return NULL;
+    }
+    printf("success!\n\r");
+
+    /* Get the number of bytes */
+    fseek(fp, 0L, SEEK_END);
+    numbytes = ftell(fp);
+
+    /* reset the file position indicator to
+    the beginning of the file */
+    fseek(fp, 0L, SEEK_SET);
+
+    /* grab sufficient memory for the
+    buffer to hold the text */
+    buff = (char*)calloc(numbytes, sizeof(char));
+
+
+    /* copy all the text into the buffer */
+    fread(buff, sizeof(char), numbytes-1, fp);
+    fclose(fp);
+
+    /* free the memory we used for the buffer */
+    //free(buff);
+
+    //Unmount the SD card
+    sd.unmount();
+
+    return buff;
+}