sensor

/drivers/peripheral/sensor
├── hal                # sensor模块hal层代码
│   └── include       # sensor模块hal层内部头文件
│   └── src           # sensor模块hal层代码的实现
├── interfaces         # sensor模块对上层服务提供的驱动能力接口
│   └── include       # sensor模块对外提供的接口定义
├── test               # sensor模块测试代码
│   └── unittest      # sensor模块单元测试代码

#include "sensor_if.h"

/* 创建回调函数 */
void SensorDataCallback(struct SensorEvents *event)
{
    if(event == NULL){
        return;
    }
    float *sensorData=(float *)event->data;
    printf("sensor data[%f]", *sensorData);
}

void SensorSample(void)
{
    int ret;
    struct SensorInformation *sensorInfo = NULL;
    int32_t count = 0;
    int32_t sensorInterval = 200000000; /* 数据采样率设置200毫秒，单位纳秒 */

    /* 1.创建传感器接口实例 */
    struct SensorInterface *sensorDev = NewSensorInterfaceInstance();
    if (sensorDev == NULL) {
        return;
    }
    /* 2.订阅者注册传感器数据回调处理函数 */
    ret = sensorDev->Register(0, SensorDataCallback);
    if (ret != 0) {
        return;
    }
    /* 3.获取设备支持的Sensor列表 */
    ret = GetAllSensors(&sensorInfo, &count);
    if (ret != 0) {
        return;
    }
    /* 4.设置传感器采样率 */
    ret = SetBatch(SENSOR_TYPE_ACCELEROMETER, sensorInterval, 0);
    if (ret != 0) {
        return;
    }
    /* 5.使能传感器 */
    ret = Enable(SENSOR_TYPE_ACCELEROMETER);
    if (ret != 0) {
        return;
    }
    /* 6.去使能传感器 */
    ret = Disable(SENSOR_TYPE_ACCELEROMETER);
    if (ret != 0) {
        return;
    }
    /* 7.取消传感器数据订阅函数 */
    ret = Unregister(0);
    if (ret != 0) {
        return;
    }
    /* 8.释放传感器接口实例 */
    ret = FreeSensorInterfaceInstance();
    if (ret != 0) {
        return;
    }
}