interfacing an analog device to the nrf52

[Naveenkumar]

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]

thanks for the answer,,i am getting the values now properly

[awneil]

So, for the benefit of future readers who may have the same or similar problems, please describe what was wrong, and how you fixed it.

[Naveenkumar]

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\n",BPM);

}