blob: 23915e919818c93409dfdb7477364d1783972ae6 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <vector>
#include "base/macros.h"
#include "tools/battor_agent/battor_protocol_types.h"
namespace battor {
// Converter capable of taking raw samples from the BattOr and using
// configuration information to turn them into samples with real units.
class BattOrSampleConverter {
// Constructs a BattOrSampleConverter.
// - eeprom: The BattOr's EEPROM, which contains some required conversion
// parameters.
// - calibration_frame: The first frame sent back from the BattOr when
// streaming samples. This frame gives current and voltage measurements
// that ignore whatever the BattOr's connected to, and therefore provide
// a means for us to determine baseline current and voltage.
BattOrSampleConverter(const BattOrEEPROM& eeprom,
const std::vector<RawBattOrSample>& calibration_frame);
virtual ~BattOrSampleConverter();
// Converts a raw sample to a unitful one with a timestamp.
BattOrSample ToSample(const RawBattOrSample& sample,
size_t sample_number) const;
// Converts a raw sample to watts.
float ToWatts(const RawBattOrSample& sample) const;
// Returns the lowest magnitude sample that the BattOr can collect.
BattOrSample MinSample() const;
// Returns the highest magnitude sample that the BattOr can collect.
BattOrSample MaxSample() const;
// The BattOr's EEPROM, which stores some conversion parameters we need.
BattOrEEPROM eeprom_;
// The baseline current and voltage calculated from the calibration frame.
double baseline_current_;
double baseline_voltage_;
} // namespace battor