Embedded System Based on an ARM Microcontroller to Analyze Heart Rate Variability in Real Time Using Wavelets

Code 1

Efficient use of RAM memory using structures and unions.

typedef union

  unsigned uint8_tAllFlags;

  struct

   unsigned flag_0:1;

   unsigned flag_1:1;

   unsigned flag_2:1;

   unsigned flag_3:1;

   unsigned flag_4:1;

   unsigned flag_5:1;

   unsigned flag_6:1;

   unsigned flag_7:1;

   ;

DeviceStatusFlags;

DeviceStatusFlags Flags;

Used Bytes in RAM: 1

   uint8_t flag_0;

   uint8_t flag_1;

   uint8_t flag_2;

   uint8_t flag_3;

   uint8_t flag_4;

   uint8_t flag_5;

   uint8_t flag_6;

   uint8_t flag_7;

Used Bytes in RAM: 8