Function rt_sensor_close

components/drivers/sensor/v1/sensor.c:226–283

}

static rt_err_t rt_sensor_close(rt_device_t dev)
{
    rt_sensor_t sensor = (rt_sensor_t)dev;
    int i;
    rt_err_t (*local_ctrl)(struct rt_sensor_device * sensor, int cmd, void *arg) = local_control;

    RT_ASSERT(dev != RT_NULL);

    if (sensor->module)
    {
        rt_mutex_take(sensor->module->lock, RT_WAITING_FOREVER);
    }
    if (sensor->ops->control != RT_NULL)
    {
        local_ctrl = sensor->ops->control;
    }

    /* Configure power mode to power down mode */
    if (local_ctrl(sensor, RT_SENSOR_CTRL_SET_POWER, (void *)RT_SENSOR_POWER_DOWN) == RT_EOK)
    {
        sensor->config.power = RT_SENSOR_POWER_DOWN;
    }

    if (sensor->module != RT_NULL && sensor->info.fifo_max > 0 && sensor->data_buf != RT_NULL)
    {
        for (i = 0; i < sensor->module->sen_num; i ++)
        {
            if (sensor->module->sen[i]->parent.ref_count > 0)
                goto __exit;
        }

        /* Free memory for the sensor buffer */
        for (i = 0; i < sensor->module->sen_num; i ++)
        {
            if (sensor->module->sen[i]->data_buf != RT_NULL)
            {
                rt_free(sensor->module->sen[i]->data_buf);
                sensor->module->sen[i]->data_buf = RT_NULL;
            }
        }
    }
    if (sensor->config.mode != RT_SENSOR_MODE_POLLING)
    {
        /* Sensor disable interrupt */
        if (sensor->config.irq_pin.pin != RT_PIN_NONE)
        {
            rt_pin_irq_enable(sensor->config.irq_pin.pin, RT_FALSE);
        }
    }

__exit:
    if (sensor->module)
    {
        rt_mutex_release(sensor->module->lock);
    }

    return RT_EOK;
}