How can i add bluetooth module hc 06

Projects Programming
1 
#include "ssd1306h.h"
#include "MAX30102.h"
#include "Pulse.h"
 
#include <Wire.h>

// Routines to clear and set bits 
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif


SSD1306 oled; 
MAX30102 sensor;
Pulse pulseIR;
Pulse pulseRed;
MAFilter bpm;

#define LED LED_BUILTIN
#define BUTTON 3
#define OPTIONS 7

static const uint8_t heart_bits[] PROGMEM = { 0x00, 0x00, 0x38, 0x38, 0x7c, 0x7c, 0xfe, 0xfe, 0xfe, 0xff, 
                                        0xfe, 0xff, 0xfc, 0x7f, 0xf8, 0x3f, 0xf0, 0x1f, 0xe0, 0x0f,
                                        0xc0, 0x07, 0x80, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 
                                        0x00, 0x00 };

//spo2_table is approximated as  -45.060*ratioAverage* ratioAverage + 30.354 *ratioAverage + 94.845 ;
const uint8_t spo2_table[184] PROGMEM =
        { 95, 95, 95, 96, 96, 96, 97, 97, 97, 97, 97, 98, 98, 98, 98, 98, 99, 99, 99, 99, 
          99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 
          100, 100, 100, 100, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97, 
          97, 97, 96, 96, 96, 96, 95, 95, 95, 94, 94, 94, 93, 93, 93, 92, 92, 92, 91, 91, 
          90, 90, 89, 89, 89, 88, 88, 87, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81, 
          80, 80, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 70, 69, 69, 68, 67, 
          66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50, 
          49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 31, 30, 29, 
          28, 27, 26, 25, 23, 22, 21, 20, 19, 17, 16, 15, 14, 12, 11, 10, 9, 7, 6, 5, 
          3, 2, 1 } ;
// 'logo', 128x64px
const unsigned char bmp_logo [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x18, 0x0f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x47, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xbf, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x7f, 0xff, 0xfc, 0x00, 0x00, 0x03, 0xe0, 0x20, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x01, 0xff, 0xff, 0xff, 0x00, 0x00, 0x0c, 0x01, 0xfe, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x03, 0xff, 0xff, 0xff, 0x80, 0x00, 0x10, 0x00, 0x10, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x07, 0xff, 0xff, 0xff, 0x80, 0x00, 0x10, 0x00, 0x10, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x07, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x10, 0x00, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x18, 0x00, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x07, 0xf0, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x1f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x10, 0x10, 0x08, 0x21, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x0a, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x07, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x80, 
	0x00, 0x0f, 0xc0, 0x7c, 0x0f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x80, 
	0x00, 0x0f, 0x00, 0x38, 0x03, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x80, 
	0x00, 0x0e, 0x00, 0x30, 0x01, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x80, 
	0x00, 0x0c, 0x00, 0x30, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 
	0x00, 0x1c, 0x00, 0x30, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 
	0x00, 0x1c, 0x00, 0x70, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 
	0x00, 0x1c, 0x00, 0x70, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 
	0x00, 0x0e, 0x00, 0xf8, 0x00, 0x70, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 
	0x00, 0x0e, 0x00, 0xfc, 0x00, 0xf0, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 
	0x00, 0x07, 0x07, 0xaf, 0x00, 0xf0, 0x01, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 
	0x00, 0x07, 0xdf, 0x27, 0xe3, 0xe0, 0x01, 0x40, 0x00, 0x81, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 
	0x00, 0x03, 0xff, 0x27, 0xff, 0xc0, 0x01, 0x20, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 
	0x00, 0x01, 0xff, 0x27, 0xff, 0xc0, 0x01, 0x10, 0x00, 0x80, 0x00, 0x00, 0x1c, 0x00, 0x08, 0x00, 
	0x00, 0x00, 0x0e, 0x23, 0xe6, 0x00, 0x01, 0x08, 0x00, 0x80, 0x00, 0x00, 0x12, 0x00, 0x08, 0x00, 
	0x00, 0x01, 0xc7, 0x27, 0xe0, 0xc0, 0x01, 0x08, 0x00, 0x80, 0x00, 0x00, 0x22, 0x00, 0x08, 0x00, 
	0x00, 0x01, 0xc7, 0xff, 0xe1, 0xc0, 0x01, 0x04, 0xc0, 0x80, 0x02, 0x04, 0x42, 0x00, 0x08, 0x00, 
	0x00, 0x01, 0xc7, 0xff, 0xe1, 0xc0, 0x01, 0x07, 0x00, 0x40, 0x82, 0x08, 0x44, 0x00, 0x00, 0x00, 
	0x00, 0x01, 0xc6, 0xee, 0xe1, 0xc0, 0x01, 0x79, 0x00, 0x40, 0x82, 0x10, 0x5c, 0x00, 0x00, 0x00, 
	0x00, 0x01, 0xc0, 0x06, 0x01, 0x80, 0x03, 0x81, 0x80, 0x40, 0x82, 0x10, 0x20, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xe0, 0x58, 0x01, 0x80, 0x04, 0x80, 0x40, 0x20, 0x82, 0x10, 0x20, 0x80, 0x00, 0x00, 
	0x00, 0x00, 0xe2, 0x00, 0x03, 0x80, 0x00, 0x80, 0x40, 0x20, 0x81, 0x20, 0x13, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xec, 0xc8, 0x6f, 0x80, 0x00, 0x80, 0x20, 0x20, 0x81, 0x20, 0x1e, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xfc, 0xcc, 0xff, 0x00, 0x00, 0x80, 0x20, 0x20, 0x81, 0x40, 0x00, 0x00, 0x08, 0x00, 
	0x00, 0x00, 0xff, 0xde, 0xff, 0x00, 0x00, 0x80, 0x20, 0x20, 0x80, 0xc0, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x7f, 0xff, 0xfe, 0x00, 0x00, 0x80, 0x30, 0x20, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x1f, 0xff, 0xf8, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x07, 0xff, 0xf0, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};


int getVCC() {
  //reads internal 1V1 reference against VCC
  #if defined(__AVR_ATmega1284P__)
    ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);  // For ATmega1284
  #else
    ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);  // For ATmega328
  #endif
  delay(2); // Wait for Vref to settle
  ADCSRA |= _BV(ADSC); // Convert
  while (bit_is_set(ADCSRA, ADSC));
  uint8_t low = ADCL;
  unsigned int val = (ADCH << 8) | low;
  //discard previous result
  ADCSRA |= _BV(ADSC); // Convert
  while (bit_is_set(ADCSRA, ADSC));
  low = ADCL;
  val = (ADCH << 8) | low;
  
  return (((long)1024 * 1100) / val)/100;  
}

void print_digit(int x, int y, long val, char c=' ', uint8_t field = 3,const int BIG = 2)
    {  
    uint8_t ff = field;
    do { 
        char ch = (val!=0) ? val%10+'0': c;
        oled.drawChar( x+BIG*(ff-1)*6, y, ch, BIG);
        val = val/10; 
        --ff;
    } while (ff>0);
}


/*
 *   Record, scale  and display PPG Wavefoem
 */
const uint8_t MAXWAVE = 72;

class Waveform {
  public:
    Waveform(void) {wavep = 0;}

      void record(int waveval) {
        waveval = waveval/8;         // scale to fit in byte  缩放以适合字节
        waveval += 128;              //shift so entired waveform is +ve  
        waveval = waveval<0? 0 : waveval;
        waveform[wavep] = (uint8_t) (waveval>255)?255:waveval; 
        wavep = (wavep+1) % MAXWAVE;
      }
  
      void scale() {
        uint8_t maxw = 0;
        uint8_t minw = 255;
        for (int i=0; i<MAXWAVE; i++) { 
          maxw = waveform[i]>maxw?waveform[i]:maxw;
          minw = waveform[i]<minw?waveform[i]:minw;
        }
        uint8_t scale8 = (maxw-minw)/4 + 1;  //scale * 8 to preserve precision
        uint8_t index = wavep;
        for (int i=0; i<MAXWAVE; i++) {
          disp_wave[i] = 31-((uint16_t)(waveform[index]-minw)*8)/scale8;
          index = (index + 1) % MAXWAVE;
        }
      }

void draw(uint8_t X) {
  for (int i=0; i<MAXWAVE; i++) {
    uint8_t y = disp_wave[i];
    oled.drawPixel(X+i, y);
    if (i<MAXWAVE-1) {
      uint8_t nexty = disp_wave[i+1];
      if (nexty>y) {
        for (uint8_t iy = y+1; iy<nexty; ++iy)  
        oled.drawPixel(X+i, iy);
        } 
        else if (nexty<y) {
          for (uint8_t iy = nexty+1; iy<y; ++iy)  
          oled.drawPixel(X+i, iy);
          }
       }
    } 
}

private:
    uint8_t waveform[MAXWAVE];
    uint8_t disp_wave[MAXWAVE];
    uint8_t wavep = 0;
    
} wave;

int  beatAvg;
int  SPO2, SPO2f;
int  voltage;
bool filter_for_graph = false;
bool draw_Red = false;
uint8_t pcflag =0;
uint8_t istate = 0;
uint8_t sleep_counter = 0;

void button(void){
    pcflag = 1;
}

void checkbutton(){
    if (pcflag && !digitalRead(BUTTON)) {
      istate = (istate +1) % 4;
      filter_for_graph = istate & 0x01;
      draw_Red = istate & 0x02;
      EEPROM.write(OPTIONS, filter_for_graph);
      EEPROM.write(OPTIONS+1, draw_Red);
    }
    pcflag = 0;
}



void Display_5(){
   if(pcflag && !digitalRead(BUTTON)){
     draw_oled(5);
     delay(1100);
   }
   pcflag = 0;
 

}

void go_sleep() {
    oled.fill(0);
    oled.off();
    delay(20);
    sensor.off();
    delay(20);
    cbi(ADCSRA, ADEN);  // disable adc
    delay(10);
    pinMode(0,INPUT);
    pinMode(2,INPUT);
    set_sleep_mode(SLEEP_MODE_PWR_DOWN);     
    sleep_mode();  // sleep until button press 
    // cause reset
    setup();
}

void draw_oled(int msg) {
    oled.firstPage();
    do{
    switch(msg){
        case 0:  oled.drawStr(10,0,F("Device error"),1); 
                 break;
        case 1:  oled.drawStr(13,10,F("PLACE"),1); 
                 oled.drawStr(10,20,F("Hand"),1);
                 oled.drawChar(100,0,voltage/10+'0');
                 oled.drawChar(106,0,'.');
                 oled.drawChar(112,0,voltage%10+'0');
                 oled.drawChar(118,0,'V');
                 oled.drawStr(84,14,F("SPO2"),1); 
                 if (draw_Red) 
                    oled.drawStr(84,24,F("Red"),1); 
                 else
                    oled.drawStr(84,24,F("IR"),1); 
                 if (filter_for_graph) 
                    oled.drawStr(108,24,F("IP"),1); 
                 else
                    oled.drawStr(108,24,F("Raw"),1); 
                 break;
        case 2:  print_digit(86,0,beatAvg);
                 wave.draw(8);
                 print_digit(98,16,SPO2f,' ',3,1);
                 oled.drawChar(116,16,'%');
                 print_digit(98,24,SPO2,' ',3,1);
                 oled.drawChar(116,24,'%');
                 break;
        case 3:  oled.drawStr(0,9,F("Pulse "),1);
                 oled.drawStr(0,20,F("Oximeter"),1);
                 //oled.drawXBMP(6,8,16,16,heart_bits);
                
                 break;
        case 4:  oled.drawStr(28,12,F("OFF IN"),1);
                 oled.drawChar(76,12,10-sleep_counter/10+'0');
                 oled.drawChar(82,12,'*');
                 break;
        case 5:  oled.drawStr(0,4,F("BMP:"),1); 
                 print_digit(25,0,beatAvg);
                 oled.drawStr(0,15,F("SpO2:%"),1); 
                 print_digit(25,15,SPO2);
                 oled.drawXBMP(106,8,16,16,heart_bits);
                 break;
        }
    } while (oled.nextPage());
}

void setup(void) {
  pinMode(LED, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);
  filter_for_graph = EEPROM.read(OPTIONS);
  draw_Red = EEPROM.read(OPTIONS+1);
  oled.init();
  oled.fill(0x00);
  draw_oled(3);
  delay(8000); 
  if (!sensor.begin())  {
    draw_oled(0);
    while (1);
  }
  sensor.setup(); 
  attachInterrupt(digitalPinToInterrupt(BUTTON),button, CHANGE);
}

long lastBeat = 0;    //Time of the last beat 
long displaytime = 0; //Time of the last display update
bool led_on = false;


void loop()  {
  
    sensor.check();
    long now = millis();   //start time of this cycle
    if (!sensor.available()) return;
    uint32_t irValue = sensor.getIR(); 
    uint32_t redValue = sensor.getRed();
    sensor.nextSample();
    if (irValue<30000) {
        voltage = getVCC();
        checkbutton();
        draw_oled(sleep_counter<=50 ? 1 : 60); // finger not down message
        //? : 是三元运算符，整个表达式根据条件返回不同的值，如果x>y为真则返回x，如果为假则返回y，之后=赋值给z。相当于:if(x>y)z=x;elsez=y
        delay(200);
        ++sleep_counter;
        if (sleep_counter>100) {
          go_sleep(); 
          sleep_counter = 0;
        }
    } else {
        sleep_counter = 0;
        // remove DC element移除直流元件
        int16_t IR_signal, Red_signal;
        bool beatRed, beatIR;
        if (!filter_for_graph) {//图形过滤器
           IR_signal =  pulseIR.dc_filter(irValue) ;
           Red_signal = pulseRed.dc_filter(redValue);
           beatRed = pulseRed.isBeat(pulseRed.ma_filter(Red_signal));
           beatIR =  pulseIR.isBeat(pulseIR.ma_filter(IR_signal));        
        } else {
           IR_signal =  pulseIR.ma_filter(pulseIR.dc_filter(irValue)) ;
           Red_signal = pulseRed.ma_filter(pulseRed.dc_filter(redValue));
           beatRed = pulseRed.isBeat(Red_signal);
           beatIR =  pulseIR.isBeat(IR_signal);
        }
        // invert waveform to get classical BP waveshape
        wave.record(draw_Red ? -Red_signal : -IR_signal ); 
        // check IR or Red for heartbeat     
        if (draw_Red ? beatRed : beatIR){
            long btpm = 60000/(now - lastBeat);
            if (btpm > 0 && btpm < 200) beatAvg = bpm.filter((int16_t)btpm);
            lastBeat = now; 
            digitalWrite(LED, HIGH); 
            led_on = true;
            // compute SpO2 ratio
            long numerator   = (pulseRed.avgAC() * pulseIR.avgDC())/256;
            long denominator = (pulseRed.avgDC() * pulseIR.avgAC())/256;
            int RX100 = (denominator>0) ? (numerator * 100)/denominator : 999;
            // using formula
            SPO2f = (10400 - RX100*17+50)/100;  
            // from table
            if ((RX100>=0) && (RX100<184))
              SPO2 = pgm_read_byte_near(&spo2_table[RX100]);
        }
        // update display every 50 ms if fingerdown
        if (now-displaytime>50) {
            displaytime = now;
            wave.scale();
            draw_oled(2);
            
        }
        Display_5();

 
    }
    // flash led for 25 ms
    if (led_on && (now - lastBeat)>25){
        digitalWrite(LED, LOW);
        led_on = false;
     }
}
2

As your topic does not relate directly to the installation or operation of the IDE it has been moved to the Programming category of the forum

What do you want to do using the HC06 ?

3

i want to transfer BPM and Sp02 data through it to andriod smartphone app .I aim to collect and store of multiple individuals on my phone via the module and diplay within a app.

4

Which Arduino board are you using ?

The HC06 needs to be driven from a serial interface

5

Your intentions are far from clear. HC-06 is used to transmit alphanumric data via a serial port. The programming required to do that is typically

Serial.print(ladedah);

I can't see if you actually have any data to print. If you do, you might try sending it to the serial monitor for starters. The same code is used. Once sorted, you may then connect Bluetooth, and you are done.

You might find the following background notes useful.

The first four pages will probably suffice.

6

if is possible you can edit this code and put bluetooth module .`#include "ssd1306h.h"
#include "MAX30102.h"
#include "Pulse.h"
#include <avr/pgmspace.h>
#include <EEPROM.h>
#include <avr/sleep.h>
#include <Wire.h>

// Routines to clear and set bits
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif

SSD1306 oled;
MAX30102 sensor;
Pulse pulseIR;
Pulse pulseRed;
MAFilter bpm;

#define LED LED_BUILTIN
#define BUTTON 3
#define OPTIONS 7

static const uint8_t heart_bits[] PROGMEM = { 0x00, 0x00, 0x38, 0x38, 0x7c, 0x7c, 0xfe, 0xfe, 0xfe, 0xff,
0xfe, 0xff, 0xfc, 0x7f, 0xf8, 0x3f, 0xf0, 0x1f, 0xe0, 0x0f,
0xc0, 0x07, 0x80, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00 };

//spo2_table is approximated as -45.060ratioAverage ratioAverage + 30.354 *ratioAverage + 94.845 ;
const uint8_t spo2_table[184] PROGMEM =
{ 95, 95, 95, 96, 96, 96, 97, 97, 97, 97, 97, 98, 98, 98, 98, 98, 99, 99, 99, 99,
99, 99, 99, 99, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
100, 100, 100, 100, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 98, 98, 98, 97, 97,
97, 97, 96, 96, 96, 96, 95, 95, 95, 94, 94, 94, 93, 93, 93, 92, 92, 92, 91, 91,
90, 90, 89, 89, 89, 88, 88, 87, 87, 86, 86, 85, 85, 84, 84, 83, 82, 82, 81, 81,
80, 80, 79, 78, 78, 77, 76, 76, 75, 74, 74, 73, 72, 72, 71, 70, 69, 69, 68, 67,
66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 58, 57, 56, 56, 55, 54, 53, 52, 51, 50,
49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 31, 30, 29,
28, 27, 26, 25, 23, 22, 21, 20, 19, 17, 16, 15, 14, 12, 11, 10, 9, 7, 6, 5,
3, 2, 1 } ;
// 'logo', 128x64px
const unsigned char bmp_logo [] PROGMEM = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x18, 0x0f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x47, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xbf, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7f, 0xff, 0xfc, 0x00, 0x00, 0x03, 0xe0, 0x20, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0xff, 0xff, 0xff, 0x00, 0x00, 0x0c, 0x01, 0xfe, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x03, 0xff, 0xff, 0xff, 0x80, 0x00, 0x10, 0x00, 0x10, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x07, 0xff, 0xff, 0xff, 0x80, 0x00, 0x10, 0x00, 0x10, 0x00, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x07, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x10, 0x00, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x18, 0x00, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x07, 0xf0, 0x10, 0x08, 0x22, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x10, 0x10, 0x08, 0x21, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x0a, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00,
0x00, 0x0f, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x07, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x80,
0x00, 0x0f, 0xc0, 0x7c, 0x0f, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x80,
0x00, 0x0f, 0x00, 0x38, 0x03, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x80,
0x00, 0x0e, 0x00, 0x30, 0x01, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x80,
0x00, 0x0c, 0x00, 0x30, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
0x00, 0x1c, 0x00, 0x30, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
0x00, 0x1c, 0x00, 0x70, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
0x00, 0x1c, 0x00, 0x70, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
0x00, 0x0e, 0x00, 0xf8, 0x00, 0x70, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80,
0x00, 0x0e, 0x00, 0xfc, 0x00, 0xf0, 0x00, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x07, 0x07, 0xaf, 0x00, 0xf0, 0x01, 0x80, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x07, 0xdf, 0x27, 0xe3, 0xe0, 0x01, 0x40, 0x00, 0x81, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
0x00, 0x03, 0xff, 0x27, 0xff, 0xc0, 0x01, 0x20, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
0x00, 0x01, 0xff, 0x27, 0xff, 0xc0, 0x01, 0x10, 0x00, 0x80, 0x00, 0x00, 0x1c, 0x00, 0x08, 0x00,
0x00, 0x00, 0x0e, 0x23, 0xe6, 0x00, 0x01, 0x08, 0x00, 0x80, 0x00, 0x00, 0x12, 0x00, 0x08, 0x00,
0x00, 0x01, 0xc7, 0x27, 0xe0, 0xc0, 0x01, 0x08, 0x00, 0x80, 0x00, 0x00, 0x22, 0x00, 0x08, 0x00,
0x00, 0x01, 0xc7, 0xff, 0xe1, 0xc0, 0x01, 0x04, 0xc0, 0x80, 0x02, 0x04, 0x42, 0x00, 0x08, 0x00,
0x00, 0x01, 0xc7, 0xff, 0xe1, 0xc0, 0x01, 0x07, 0x00, 0x40, 0x82, 0x08, 0x44, 0x00, 0x00, 0x00,
0x00, 0x01, 0xc6, 0xee, 0xe1, 0xc0, 0x01, 0x79, 0x00, 0x40, 0x82, 0x10, 0x5c, 0x00, 0x00, 0x00,
0x00, 0x01, 0xc0, 0x06, 0x01, 0x80, 0x03, 0x81, 0x80, 0x40, 0x82, 0x10, 0x20, 0x00, 0x00, 0x00,
0x00, 0x00, 0xe0, 0x58, 0x01, 0x80, 0x04, 0x80, 0x40, 0x20, 0x82, 0x10, 0x20, 0x80, 0x00, 0x00,
0x00, 0x00, 0xe2, 0x00, 0x03, 0x80, 0x00, 0x80, 0x40, 0x20, 0x81, 0x20, 0x13, 0x00, 0x00, 0x00,
0x00, 0x00, 0xec, 0xc8, 0x6f, 0x80, 0x00, 0x80, 0x20, 0x20, 0x81, 0x20, 0x1e, 0x00, 0x00, 0x00,
0x00, 0x00, 0xfc, 0xcc, 0xff, 0x00, 0x00, 0x80, 0x20, 0x20, 0x81, 0x40, 0x00, 0x00, 0x08, 0x00,
0x00, 0x00, 0xff, 0xde, 0xff, 0x00, 0x00, 0x80, 0x20, 0x20, 0x80, 0xc0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x7f, 0xff, 0xfe, 0x00, 0x00, 0x80, 0x30, 0x20, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x1f, 0xff, 0xf8, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x07, 0xff, 0xf0, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x03, 0xff, 0xe0, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

int getVCC() {
//reads internal 1V1 reference against VCC
#if defined(AVR_ATmega1284P)
ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); // For ATmega1284
#else
ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); // For ATmega328
#endif
delay(2); // Wait for Vref to settle
ADCSRA |= _BV(ADSC); // Convert
while (bit_is_set(ADCSRA, ADSC));
uint8_t low = ADCL;
unsigned int val = (ADCH << 8) | low;
//discard previous result
ADCSRA |= _BV(ADSC); // Convert
while (bit_is_set(ADCSRA, ADSC));
low = ADCL;
val = (ADCH << 8) | low;

return (((long)1024 * 1100) / val)/100;
}

void print_digit(int x, int y, long val, char c=' ', uint8_t field = 3,const int BIG = 2)
{
uint8_t ff = field;
do {
char ch = (val!=0) ? val%10+'0': c;
oled.drawChar( x+BIG*(ff-1)*6, y, ch, BIG);
val = val/10;
--ff;
} while (ff>0);
}

/*

  • Record, scale and display PPG Wavefoem
    */
    const uint8_t MAXWAVE = 72;

class Waveform {
public:
Waveform(void) {wavep = 0;}

  void record(int waveval) {
    waveval = waveval/8;         // scale to fit in byte  缩放以适合字节
    waveval += 128;              //shift so entired waveform is +ve  
    waveval = waveval<0? 0 : waveval;
    waveform[wavep] = (uint8_t) (waveval>255)?255:waveval; 
    wavep = (wavep+1) % MAXWAVE;
  }

  void scale() {
    uint8_t maxw = 0;
    uint8_t minw = 255;
    for (int i=0; i<MAXWAVE; i++) { 
      maxw = waveform[i]>maxw?waveform[i]:maxw;
      minw = waveform[i]<minw?waveform[i]:minw;
    }
    uint8_t scale8 = (maxw-minw)/4 + 1;  //scale * 8 to preserve precision
    uint8_t index = wavep;
    for (int i=0; i<MAXWAVE; i++) {
      disp_wave[i] = 31-((uint16_t)(waveform[index]-minw)*8)/scale8;
      index = (index + 1) % MAXWAVE;
    }
  }

void draw(uint8_t X) {
for (int i=0; i<MAXWAVE; i++) {
uint8_t y = disp_wave[i];
oled.drawPixel(X+i, y);
if (i<MAXWAVE-1) {
uint8_t nexty = disp_wave[i+1];
if (nexty>y) {
for (uint8_t iy = y+1; iy<nexty; ++iy)
oled.drawPixel(X+i, iy);
}
else if (nexty<y) {
for (uint8_t iy = nexty+1; iy<y; ++iy)
oled.drawPixel(X+i, iy);
}
}
}
}

private:
uint8_t waveform[MAXWAVE];
uint8_t disp_wave[MAXWAVE];
uint8_t wavep = 0;

} wave;

int beatAvg;
int SPO2, SPO2f;
int voltage;
bool filter_for_graph = false;
bool draw_Red = false;
uint8_t pcflag =0;
uint8_t istate = 0;
uint8_t sleep_counter = 0;

void button(void){
pcflag = 1;
}

void checkbutton(){
if (pcflag && !digitalRead(BUTTON)) {
istate = (istate +1) % 4;
filter_for_graph = istate & 0x01;
draw_Red = istate & 0x02;
EEPROM.write(OPTIONS, filter_for_graph);
EEPROM.write(OPTIONS+1, draw_Red);
}
pcflag = 0;
}

void Display_5(){
if(pcflag && !digitalRead(BUTTON)){
draw_oled(5);
delay(1100);
}
pcflag = 0;

}

void go_sleep() {
oled.fill(0);
oled.off();
delay(20);
sensor.off();
delay(20);
cbi(ADCSRA, ADEN); // disable adc
delay(10);
pinMode(0,INPUT);
pinMode(2,INPUT);
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_mode(); // sleep until button press
// cause reset
setup();
}

void draw_oled(int msg) {
oled.firstPage();
do{
switch(msg){
case 0: oled.drawStr(10,0,F("Device error"),1);
break;
case 1: oled.drawStr(13,10,F("PLACE"),1);
oled.drawStr(10,20,F("Hand"),1);
oled.drawChar(100,0,voltage/10+'0');
oled.drawChar(106,0,'.');
oled.drawChar(112,0,voltage%10+'0');
oled.drawChar(118,0,'V');
oled.drawStr(84,14,F("SPO2"),1);
if (draw_Red)
oled.drawStr(84,24,F("Red"),1);
else
oled.drawStr(84,24,F("IR"),1);
if (filter_for_graph)
oled.drawStr(108,24,F("IP"),1);
else
oled.drawStr(108,24,F("Raw"),1);
break;
case 2: print_digit(86,0,beatAvg);
wave.draw(8);
print_digit(98,16,SPO2f,' ',3,1);
oled.drawChar(116,16,'%');
print_digit(98,24,SPO2,' ',3,1);
oled.drawChar(116,24,'%');
break;
case 3: oled.drawStr(0,9,F("Pulse "),1);
oled.drawStr(0,20,F("Oximeter"),1);
//oled.drawXBMP(6,8,16,16,heart_bits);

             break;
    case 4:  oled.drawStr(28,12,F("OFF IN"),1);
             oled.drawChar(76,12,10-sleep_counter/10+'0');
             oled.drawChar(82,12,'*');
             break;
    case 5:  oled.drawStr(0,4,F("BMP:"),1); 
             print_digit(25,0,beatAvg);
             oled.drawStr(0,15,F("SpO2:%"),1); 
             print_digit(25,15,SPO2);
             oled.drawXBMP(106,8,16,16,heart_bits);
             break;
    }
} while (oled.nextPage());

}

void setup(void) {
pinMode(LED, OUTPUT);
pinMode(BUTTON, INPUT_PULLUP);
filter_for_graph = EEPROM.read(OPTIONS);
draw_Red = EEPROM.read(OPTIONS+1);
oled.init();
oled.fill(0x00);
draw_oled(3);
delay(8000);
if (!sensor.begin()) {
draw_oled(0);
while (1);
}
sensor.setup();
attachInterrupt(digitalPinToInterrupt(BUTTON),button, CHANGE);
}

long lastBeat = 0; //Time of the last beat
long displaytime = 0; //Time of the last display update
bool led_on = false;

void loop() {

sensor.check();
long now = millis();   //start time of this cycle
if (!sensor.available()) return;
uint32_t irValue = sensor.getIR(); 
uint32_t redValue = sensor.getRed();
sensor.nextSample();
if (irValue<30000) {
    voltage = getVCC();
    checkbutton();
    draw_oled(sleep_counter<=50 ? 1 : 60); // finger not down message
    //? : 是三元运算符，整个表达式根据条件返回不同的值，如果x>y为真则返回x，如果为假则返回y，之后=赋值给z。相当于:if(x>y)z=x;elsez=y
    delay(200);
    ++sleep_counter;
    if (sleep_counter>100) {
      go_sleep(); 
      sleep_counter = 0;
    }
} else {
    sleep_counter = 0;
    // remove DC element移除直流元件
    int16_t IR_signal, Red_signal;
    bool beatRed, beatIR;
    if (!filter_for_graph) {//图形过滤器
       IR_signal =  pulseIR.dc_filter(irValue) ;
       Red_signal = pulseRed.dc_filter(redValue);
       beatRed = pulseRed.isBeat(pulseRed.ma_filter(Red_signal));
       beatIR =  pulseIR.isBeat(pulseIR.ma_filter(IR_signal));        
    } else {
       IR_signal =  pulseIR.ma_filter(pulseIR.dc_filter(irValue)) ;
       Red_signal = pulseRed.ma_filter(pulseRed.dc_filter(redValue));
       beatRed = pulseRed.isBeat(Red_signal);
       beatIR =  pulseIR.isBeat(IR_signal);
    }
    // invert waveform to get classical BP waveshape
    wave.record(draw_Red ? -Red_signal : -IR_signal ); 
    // check IR or Red for heartbeat     
    if (draw_Red ? beatRed : beatIR){
        long btpm = 60000/(now - lastBeat);
        if (btpm > 0 && btpm < 200) beatAvg = bpm.filter((int16_t)btpm);
        lastBeat = now; 
        digitalWrite(LED, HIGH); 
        led_on = true;
        // compute SpO2 ratio
        long numerator   = (pulseRed.avgAC() * pulseIR.avgDC())/256;
        long denominator = (pulseRed.avgDC() * pulseIR.avgAC())/256;
        int RX100 = (denominator>0) ? (numerator * 100)/denominator : 999;
        // using formula
        SPO2f = (10400 - RX100*17+50)/100;  
        // from table
        if ((RX100>=0) && (RX100<184))
          SPO2 = pgm_read_byte_near(&spo2_table[RX100]);
    }
    // update display every 50 ms if fingerdown
    if (now-displaytime>50) {
        displaytime = now;
        wave.scale();
        draw_oled(2);
        
    }
    Display_5();


}
// flash led for 25 ms
if (led_on && (now - lastBeat)>25){
    digitalWrite(LED, LOW);
    led_on = false;
 }

}

7

First, post your code in code tags. Second, since you said 'edit this code,' it needs to be moved to the work for pay category.