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 <stdint.h>
18 #include <inttypes.h>
19 #include <chre.h>
20
21 #define CHRE_APP_TAG "CHRE App 0: "
22
23 /* chre.h does not define printf format attribute for chreLog() */
24 void chreLog(enum chreLogLevel level, const char *str, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
25
26 #define EVT_LOCAL_SETUP CHRE_EVENT_FIRST_USER_VALUE
27
28 struct MyTimer {
29 uint32_t timerId;
30 };
31
32 struct ExtMsg
33 {
34 uint8_t msg;
35 uint32_t val;
36 } __attribute__((packed));
37
38 static const uint64_t kOneSecond = UINT64_C(1000000000); // in nanoseconds
39
40 static uint32_t mMyTid;
41 static uint64_t mMyAppId;
42 static int cnt;
43 static struct MyTimer mTimer;
44
nanoappFreeEvent(uint16_t eventType,void * data)45 static void nanoappFreeEvent(uint16_t eventType, void *data)
46 {
47 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "event callback invoked: eventType=%04" PRIX16
48 "; data=%p\n", eventType, data);
49 }
50
51 // Default implementation for message free
nanoappFreeMessage(void * msg,size_t size)52 static void nanoappFreeMessage(void *msg, size_t size)
53 {
54 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "message callback invoked: msg=%p; size=%08zu\n",
55 msg, size);
56 chreHeapFree(msg);
57 }
58
nanoappStart(void)59 bool nanoappStart(void)
60 {
61 mMyAppId = chreGetAppId();
62 mMyTid = chreGetInstanceId();
63 cnt = 3;
64 chreSendEvent(EVT_LOCAL_SETUP, (void*)0x87654321, nanoappFreeEvent, mMyTid);
65 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "init\n");
66 return true;
67 }
68
nanoappEnd(void)69 void nanoappEnd(void)
70 {
71 }
72
nanoappHandleEvent(uint32_t srcTid,uint16_t evtType,const void * evtData)73 void nanoappHandleEvent(uint32_t srcTid, uint16_t evtType, const void* evtData)
74 {
75 switch (evtType) {
76 case EVT_LOCAL_SETUP:
77 mTimer.timerId = chreTimerSet(kOneSecond, &mTimer, false);
78 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "started with tid %04" PRIX32
79 " timerid %" PRIu32
80 "\n", mMyTid, mTimer.timerId);
81 break;
82 case CHRE_EVENT_TIMER:
83 {
84 const struct MyTimer *t = (const struct MyTimer *)evtData;
85 struct ExtMsg *extMsg = chreHeapAlloc(sizeof(*extMsg));
86
87 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "received timer %" PRIu32
88 " (TIME: %" PRIu64
89 ") cnt: %d\n", t->timerId, chreGetTime(), cnt);
90 extMsg->msg = 0x01;
91 extMsg->val = cnt;
92 chreSendMessageToHost(extMsg, sizeof(*extMsg), 0, nanoappFreeMessage);
93 if (cnt-- <= 0)
94 chreTimerCancel(t->timerId);
95 break;
96 }
97 case CHRE_EVENT_MESSAGE_FROM_HOST:
98 {
99 const struct chreMessageFromHostData *msg = (const struct chreMessageFromHostData *)evtData;
100 const uint8_t *data = (const uint8_t *)msg->message;
101 const size_t size = msg->messageSize;
102 chreLog(CHRE_LOG_INFO, CHRE_APP_TAG "message=%p; code=%d; size=%zu\n",
103 data, (data && size) ? data[0] : 0, size);
104 break;
105 }
106 }
107 }
108