interfacing an analog device to the nrf52

Question

I am trying to connect an lcup heart rate sensor which is an analog device . i am using the SAADC example t interface it to the NRF52 board, but iam not getting the expected values.ow to congigure it for the lcup heart rate sensor

Naveenkumar · Accepted Answer

actually i am getting raw values from the sensor,,i mistook it as BPM vaiues, 
 i have changed the raw values to the BPM. 
 pass the raw values to this function ,, 
 it wil give BPM 
 by using this code void data_convert(uint16_t a)
{
	double alpha = 0.75;
static double oldValue = 0;
static double oldChange = 0;
int rawValue = a;
float voltage = rawValue * (5.0 / 1023.0);
double BPM = alpha * oldValue + (1 - alpha) * rawValue;
	NRF_LOG_INFO("%d
",BPM);

}

interfacing an analog device to the nrf52

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