stock mbed AnalogReads current loop closed and working
Fork of priustroller by
sensors/tempsensors.cpp
- Committer:
- bwang
- Date:
- 2015-03-08
- Revision:
- 11:dccbaa9274c5
- Parent:
- tempsensors.cpp@ 1:1f58bdcf2956
- Child:
- 28:af9d43bcb371
File content as of revision 11:dccbaa9274c5:
#include "includes.h" #include "sensors.h" NtcTempSensor::NtcTempSensor(PinName pin, float r_25, float ntc_b, float r_divider) { _in = new AnalogIn(pin); _ntc_b = ntc_b; _ntc_a = r_25 / exp(_ntc_b / 298.0f); _r_divider = r_divider; } float NtcTempSensor::GetTemp() { float v = (float) *_in * 3.3f; float r_n = v * _r_divider / (1.0f + v); return _ntc_b / log (r_n / _ntc_a); }