1 /*
2 * Copyright (C) 2016 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 #include <inttypes.h>
18
19 #include "chre/util/nanoapp/log.h"
20 #include "chre_api/chre.h"
21
22 #define LOG_TAG "[HelloWorld]"
23
24 /**
25 * @file
26 * A very basic example nanoapp that just logs activity in its entry points.
27 * Note that code wrapped in #ifdef CHRE_NANOAPP_INTERNAL is only relevant when
28 * a nanoapp is to be statically built into the CHRE system binary, which would
29 * make it a "system nanoapp" rather than a true dynamically loadable nanoapp.
30 */
31
32 #ifdef CHRE_NANOAPP_INTERNAL
33 namespace chre {
34 namespace {
35 #endif // CHRE_NANOAPP_INTERNAL
36
nanoappStart()37 bool nanoappStart() {
38 LOGI("Hello, world from version 0x%08" PRIx32, chreGetVersion());
39 return true;
40 }
41
nanoappHandleEvent(uint32_t senderInstanceId,uint16_t eventType,const void *)42 void nanoappHandleEvent(uint32_t senderInstanceId, uint16_t eventType,
43 const void * /*eventData*/) {
44 LOGI("Received event 0x%" PRIx16 " from 0x%" PRIx32 " at time %" PRIu64,
45 eventType, senderInstanceId, chreGetTime());
46 }
47
nanoappEnd()48 void nanoappEnd() {
49 LOGI("Goodbye, world!");
50 }
51
52 #ifdef CHRE_NANOAPP_INTERNAL
53 } // anonymous namespace
54 } // namespace chre
55
56 #include "chre/platform/static_nanoapp_init.h"
57 #include "chre/util/nanoapp/app_id.h"
58 #include "chre/util/system/napp_permissions.h"
59
60 CHRE_STATIC_NANOAPP_INIT(HelloWorld, chre::kHelloWorldAppId, 0,
61 chre::NanoappPermissions::CHRE_PERMS_NONE);
62 #endif // CHRE_NANOAPP_INTERNAL
63