created separate function for hex to char

Dependencies:   SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217

Fork of SS_SensePOC2P0_11Dec2017_USERPID by rashmi v

Revision:
50:b42238e7f46d
Parent:
49:3ff80c4bc1be
Child:
72:1f990fa8c516
--- a/sdcard.h	Fri Sep 15 19:44:48 2017 +0000
+++ b/sdcard.h	Sat Sep 16 06:54:42 2017 +0000
@@ -58,6 +58,6 @@
 void delete_sdcard(void);                                                       //delete sd card
 //void readfile(uint32_t pid);
 void read_structure(FILE *fp_read_sdcard_file);
-void read_sdcard_file(uint32_t pid);
+void read_sdcard_file();
 // void print_structure(uint32_t pid);
 #endif 
\ No newline at end of file