| // Copyright 2021 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /* |
| * Poll feature and log changes. |
| */ |
| |
| #include <iomanip> |
| #include <iostream> |
| #include <memory> |
| |
| #include <base/command_line.h> |
| #include <base/strings/string_number_conversions.h> |
| #include <base/threading/thread.h> |
| #include <base/time/time.h> |
| |
| #include "hps/hps.h" |
| #include "hps/hps_reg.h" |
| #include "hps/util/command.h" |
| |
| namespace { |
| |
| // Argument is feature number. |
| int Watch(std::unique_ptr<hps::HPS> hps, |
| const base::CommandLine::StringVector& args) { |
| int feat; |
| if (args.size() != 2) { |
| std::cerr << "Feature number required" << std::endl; |
| return 1; |
| } |
| if (!base::StringToInt(args[1], &feat)) { |
| std::cerr << args[1] << ": illegal feature number" << std::endl; |
| return 1; |
| } |
| if (feat < 0 || feat > 1) { |
| std::cerr << args[1] << ": feature number out of range (0,1)" << std::endl; |
| return 1; |
| } |
| hps->Enable(feat); |
| int last = -2; |
| for (;;) { |
| int result = hps->Result(feat); |
| if (result != last) { |
| last = result; |
| if (result < 0) { |
| std::cout << "Invalid result" << std::endl; |
| } else { |
| std::cout << "Result = " << result << std::endl; |
| } |
| } |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(100)); |
| } |
| } |
| |
| Command watch("watch", |
| "watch feature-number - " |
| "Poll for feature change.", |
| Watch); |
| |
| } // namespace |