N K / Mbed 2 deprecated analoghalls5_5

working-est copy with class-based code. still open loop

Dependencies:   mbed

Fork of analoghalls6 by N K

currentsensors.cpp

Committer:
bwang
Date:
2015-03-01
Revision:
0:54cf32d35f4d
Child:
1:1f58bdcf2956

File content as of revision 0:54cf32d35f4d:

#include "includes.h"
#include "classes.h"

AnalogCurrentSensor::AnalogCurrentSensor(PinName pin, float volts_per_amp) {
    _in = new AnalogIn(pin);
    _volts_per_amp = volts_per_amp;
    Zero();
}

void AnalogCurrentSensor::Zero() {
    _zero_level = (float) *_in;
}

float AnalogCurrentSensor::GetCurrent() {
    return ((float) *_in - _zero_level) * 3.3f / _volts_per_amp;
}