ldr.cpp

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// Copyright 2023 Myron Rodrigues
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#include "ldr.h"
 
#include "utility.h"
 
LDR::LDR(int samples, ADC * adc) : samples_(samples), adc_(adc) {}
 
float LDR::read_voltage()
{
  // return voltage in v
  float v[samples_] = {0.f};
  for (int i = 0; i < samples_; ++i) {
    v[i] = adc_->read_voltage(ADCChannel::ldr);
    delay(10);
  }
  return median(v, samples_);
}