| // 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. |
| |
| #ifndef TOOLS_BATTOR_AGENT_BATTOR_SAMPLE_CONVERTER_H_ |
| #define TOOLS_BATTOR_AGENT_BATTOR_SAMPLE_CONVERTER_H_ |
| |
| #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 { |
| public: |
| // 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; |
| |
| // 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; |
| |
| private: |
| // 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_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BattOrSampleConverter); |
| }; |
| |
| } // namespace battor |
| |
| #endif // TOOLS_BATTOR_AGENT_BATTOR_SAMPLE_CONVERTER_H_ |