rashmi v / Mbed 2 deprecated SS_SensePOC2P0_12Dec2017_USERPID

created separate function for hex to char

Dependencies:   SDFileSystem ds3231 eeprom_Nikita mbed testUniGraphic_150217

Fork of SS_SensePOC2P0_11Dec2017_USERPID by rashmi v

Diff: sdcard.h

Revision:
27:907f8ce0025e
Parent:
26:53ff13a164f3
Child:
36:00d96aa14658
--- a/sdcard.h	Wed Jul 05 15:36:58 2017 +0000
+++ b/sdcard.h	Sat Jul 08 04:19:45 2017 +0000
@@ -16,7 +16,7 @@
 int file_size() ;
 int file_size1() ;
 void sd_read(uint32_t  *v1, int size);
-void sd_open_read(int32_t pid);
+uint8_t sd_open_read(int32_t pid);
 void sd_read1(BLEMsg_info &f);
 void setpos();
 void setpos1(uint32_t position);