#include <math.h>

const int B = 4275; // B value of the thermistor
const int R0 = 100000; // R0 = 100k
const int pinTempSensor = A0; // Grove - Temperature Sensor connect to A0

#if defined(ARDUINO_ARCH_AVR)
#define debug Serial
#elif defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_SAM)
#define debug SerialUSB
#else
#define debug Serial
#endif

void setup()
{
Serial.begin(9600);
}

void loop()
{
int a = analogRead(pinTempSensor);

float R = 1023.0/a-1.0;
R = R0*R;

float temperature = 1.0/(log(R/R0)/B+1/298.15)-273.15; // convert to temperature via datasheet

Serial.print("temperature = ");
Serial.println(temperature);

delay(100);

}
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