Grumpy_Mike:
Use the standard software how to use
Standard software, do you mean just the basic coding using the Arduino interface without the processing?
if that the case, I have tried using the following code:
unsigned char pin = 13;
unsigned char counter=0;
unsigned int heart_rate=0;
unsigned long temp[21];
unsigned long sub=0;
volatile unsigned char state = LOW;
bool data_effect=true;
const int max_heartpluse_duty=2000;//you can change it follow your system's request.2000 meams 2 seconds.
//System return error if the duty overtrip 2 second.
void setup()
{
pinMode(pin, OUTPUT);
Serial.begin(9600);
Serial.println("Please ready your eat clip.");
delay(5000);
array_init();
Serial.println("Heart rate test begin.");
attachInterrupt(1, interrupt, RISING);//set interrupt 0,digital port 2
}
void loop()
{
digitalWrite(pin, state);
}
void sum()//calculate the heart rate
{
if(data_effect)
{
heart_rate=120000/(temp[20]-temp[0]);//6*20*1000/20_total_time
Serial.print("Heart_rate_is:\t");
Serial.println(heart_rate);
}
data_effect=1;//sign bit
}
void interrupt()
{
temp[counter]=millis();
state = !state;
Serial.println(counter,DEC);
Serial.println(temp[counter]);
switch(counter)
{
case(0):
sub=temp[counter]-temp[20];
Serial.println(sub);
break;
default:
sub=temp[counter]-temp[counter-1];
Serial.println(sub);
break;
}
if(sub>max_heartpluse_duty)//set 2 seconds as max heart pluse duty
{
data_effect=0;//sign bit
counter=0;
Serial.println("Heart rate measure error,test will restart!" );
array_init();
}
if (counter==20&&data_effect)
{
counter=0;
sum();
}
else if(counter!=20&&data_effect)
counter++;
else
{
counter=0;
data_effect=1;
}
}
void array_init()
{
for(unsigned char i=0;i!=20;++i)
{
temp[i]=0;
}
temp[20]=millis();
}
It's true that I started to panic since my deadline is coming close, and I just get fix with xbee and temperature sensor and now the pulse sensor is just not working though I have follow the tutorial for almost 5 times. I find people posting same problem in the pulsesensor forum itself but no one get a reply for it.