• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1# Sensor服务使用实例
2
3
4  使用实例以sensorTypeId为0的传感器为例，其他类型的传感器使用方式类似。
5
6```c
7#include "sensor_agent.h"
8#include "sensor_agent_type.h"
9#include "stdio.h"
10
11void SensorDataCallbackImpl(SensorEvent *event)
12{
13    if(event == NULL){
14        return;
15    }
16    float *sensorData=(float *)event->data;
17    for(int32_t i = 0; i < (int32_t)(event->dataLen / sizeof(uint8_t *)); i++){
18        printf("SensorDataCallbackImpl data: %f", *(sensorData + i));
19    }
20}
21
22/* 测试用例函数 */
23static int32_t TestSensorService(void)
24{
25    SensorUser sensorUser;
26    sensorUser.callback = SensorDataCallbackImpl;
27    SensorInfo *sensorInfo = (SensorInfo *)NULL;
28    int32_t count = 0;
29    // 获取设备的sensor列表
30    int32_t ret = GetAllSensors(&sensorInfo, &count);
31    if (ret != 0) {
32        printf("GetAllSensors failed! ret: %d", ret);
33        return ret;
34    }
35    // 使能传感器
36    ret = ActivateSensor(0, &sensorUser);
37    if (ret != 0) {
38        printf("ActivateSensorfailed! ret: %d", ret);
39        return ret;
40    }
41    // 订阅传感器数据
42    ret = SubscribeSensor(0, &sensorUser);
43    if (ret != 0) {
44        printf("SubscribeSensor! ret: %d", ret);
45        return ret;
46    }
47    sleep(10);
48    // 取消传感器数据订阅
49    ret = UnsubscribeSensor(0, &sensorUser);
50    if (ret != 0) {
51        printf("UnsubscribeSensor! ret: %d", ret);
52        return ret;
53    }
54    // 去使能传感器
55    ret = DeactivateSensor(0, &sensorUser);
56    if (ret != 0) {
57        printf("DeactivateSensor! ret: %d", ret);
58        return ret;
59    }
60}
61```
62