#include<SPI.h>
//#include <TimerOne.h>
#include "MAX30003.h"

#define MAX30003_CS_PIN 7
#define led 6

volatile char SPI_RX_Buff[5] ;
//volatile char *SPI_RX_Buff_Ptr;
int i=0;
unsigned long uintECGraw = 0;
signed long intECGraw=0;
uint8_t DataPacketHeader[20];
uint8_t data_len = 8;
signed long ...