100K温度电阻分度表

1. 粗精度直接用公式计算
   

2. 细精度用厂家的传感器参数来计算 Y = C1 + C2* y + C3 * y * y*y
   

static float get_ntc_temp(double Rt)
{
double y = log(Rt);//122.6us@48M
double val;

static const double c1 = 0.0008314;
static const double c2 = 0.00026178;
static const double c3 = 0.00000014274; 

val = c1 + c2*y + c3*y*y*y;
val = 1/val;
val -= 273.15;