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:
61:ce5ad0838227
Parent:
43:85a7f399cb9d
--- a/ecg_dec.h	Tue Nov 14 12:03:36 2017 +0000
+++ b/ecg_dec.h	Wed Nov 15 16:10:05 2017 +0000
@@ -3,5 +3,5 @@
 #ifndef ECG_DEC_H_
 #define ECG_DEC_H_
 
-uint16_t ecg(uint32_t pid);
+void ecg(uint32_t pid);             //changed uint16_t to void  on 15Nov rashmi
 #endif
\ No newline at end of file