1 /*
2 * Copyright (C) 2021 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "cartelemetryd_sample"
18
19 #include <aidl/android/frameworks/automotive/telemetry/ICarTelemetry.h>
20 #include <android-base/logging.h>
21 #include <android-base/stringprintf.h>
22 #include <android/binder_manager.h>
23 #include <utils/SystemClock.h>
24
25 using ::aidl::android::frameworks::automotive::telemetry::CarData;
26 using ::aidl::android::frameworks::automotive::telemetry::ICarTelemetry;
27 using ::android::base::StringPrintf;
28
main(int argc,char * argv[])29 int main(int argc, char* argv[]) {
30 const auto started_at_millis = android::elapsedRealtime();
31
32 // The name of the service is described in
33 // https://source.android.com/devices/architecture/aidl/aidl-hals#instance-names
34 const std::string instance = StringPrintf("%s/default", ICarTelemetry::descriptor);
35 LOG(INFO) << "Obtaining: " << instance;
36 std::shared_ptr<ICarTelemetry> service = ICarTelemetry::fromBinder(
37 ndk::SpAIBinder(AServiceManager_getService(instance.c_str())));
38 if (!service) {
39 LOG(ERROR) << "ICarTelemetry service not found, may be still initializing?";
40 return 1;
41 }
42
43 LOG(INFO) << "Building a CarData message, delta_since_start: "
44 << android::elapsedRealtime() - started_at_millis << " millis";
45
46 // Build a CarData message
47 // TODO(b/174608802): set a correct data ID and content
48 CarData msg;
49 msg.id = 101;
50 msg.content = {1, 0, 1, 0};
51
52 LOG(INFO) << "Sending the car data, delta_since_start: "
53 << android::elapsedRealtime() - started_at_millis << " millis";
54
55 // Send the data
56 ndk::ScopedAStatus writeStatus = service->write({msg});
57
58 if (!writeStatus.isOk()) {
59 LOG(WARNING) << "Failed to write to the service: " << writeStatus.getMessage();
60 }
61
62 // Note: On a device the delta_since_start was between 1ms to 4ms
63 // (service side was not fully implemented yet during the test).
64 LOG(INFO) << "Finished, delta_since_start: " << android::elapsedRealtime() - started_at_millis
65 << " millis";
66
67 return 0;
68 }
69