apps/timer_world/timer_world.cc

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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 <chre.h>
#include <cinttypes>

#include "chre/util/nanoapp/log.h"

#define LOG_TAG "[TimerWorld]"

#ifdef CHRE_NANOAPP_INTERNAL
#include "chre/platform/platform_static_nanoapp_init.h"

namespace chre {
namespace {
#endif  // CHRE_NANOAPP_INTERNAL

uint32_t gOneShotTimerHandle;
uint32_t gCyclicTimerHandle;
int gCyclicTimerCount;

bool nanoappStart() {
  LOGI("App started on platform ID %" PRIx64, chreGetPlatformId());

  gOneShotTimerHandle = chreTimerSet(100000000 /* duration: 100ms */,
      &gOneShotTimerHandle /* data */,
      true /* oneShot */);
  gCyclicTimerHandle = chreTimerSet(150000000 /* duration: 400ms */,
      &gCyclicTimerHandle /* data */,
      false /* oneShot */);
  gCyclicTimerCount = 0;
  return true;
}

void handleTimerEvent(const void *eventData) {
  const uint32_t *timerHandle = static_cast<const uint32_t *>(eventData);
  if (*timerHandle == gOneShotTimerHandle) {
    LOGI("One shot timer event received");
  } else if (*timerHandle == gCyclicTimerHandle) {
    LOGI("Cyclic timer event received");
    gCyclicTimerCount++;
    if (gCyclicTimerCount > 1) {
      chreTimerCancel(gCyclicTimerHandle);
    }
  }
}

void nanoappHandleEvent(uint32_t senderInstanceId,
                        uint16_t eventType,
                        const void *eventData) {
  switch (eventType) {
    case CHRE_EVENT_TIMER:
      handleTimerEvent(eventData);
      break;
    default:
      LOGW("Unknown event received");
      break;
  }
}

void nanoappStop() {
  LOGI("Stopped");
}

#ifdef CHRE_NANOAPP_INTERNAL
}  // namespace

PLATFORM_STATIC_NANOAPP_INIT(TimerWorld);

}  // namespace chre
#endif  // CHRE_NANOAPP_INTERNAL