Temperature sensor with CORE2 AWS

[pradeep]

Im using Grove - Temperature Sensor V1.2 with M5Stack AWS Edu kit,...im using the same example code given by seeeds wiki. It perfectly worked with my arduino.. But in m5stack it gives nan, and the raw values are 3400.00,3900.66 likes this, can anyone help me to resolve this...
.................................Code.....................................
// Demo code for Grove - Temperature Sensor V1.1/1.2
// Loovee @ 2015-8-26

#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);

}
................................................................................

[rashedtalukder]

Hi Pradeep, different hardware will have different pin assignments. Your sensor should be connected to Port B if it's using the ADC and pinTempSensor should be set to pin 36.