Sensor服务使用实例
Sensor服务使用实例
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。
#include "sensor_agent.h"
#include "sensor_agent_type.h"
#include "stdio.h"
void SensorDataCallbackImpl(SensorEvent *event)
{
if(event == NULL){
return;
}
float *sensorData=(float *)event->data;
for(int32_t i = 0; i < (int32_t)(event->dataLen / sizeof(uint8_t *)); i++){
printf("SensorDataCallbackImpl data: %f", *(sensorData + i));
}
}
/* 测试用例函数 */
static int32_t TestSensorService(void)
{
SensorUser sensorUser;
sensorUser.callback = SensorDataCallbackImpl;
SensorInfo *sensorInfo = (SensorInfo *)NULL;
int32_t count = 0;
// 获取设备的sensor列表
int32_t ret = GetAllSensors(&sensorInfo, &count);
if (ret != 0) {
printf("GetAllSensors failed! ret: %d", ret);
return ret;
}
// 使能传感器
ret = ActivateSensor(0, &sensorUser);
if (ret != 0) {
printf("ActivateSensorfailed! ret: %d", ret);
return ret;
}
// 订阅传感器数据
ret = SubscribeSensor(0, &sensorUser);
if (ret != 0) {
printf("SubscribeSensor! ret: %d", ret);
return ret;
}
sleep(10);
// 取消传感器数据订阅
ret = UnsubscribeSensor(0, &sensorUser);
if (ret != 0) {
printf("UnsubscribeSensor! ret: %d", ret);
return ret;
}
// 去使能传感器
ret = DeactivateSensor(0, &sensorUser);
if (ret != 0) {
printf("DeactivateSensor! ret: %d", ret);
return ret;
}
}
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