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Streaming Accelerometer and Gyroscope data simultaneously

borhenrykborhenryk
in iOS

Hi I am wondering if there is somewhere an example to combine the streaming of acc and gyro into one timestamp. I have the MetaMotionR and I am looking for the equivalent of this function but with both the sensors (so I am able to print(acceleration.x) and print(gyroscope.x) simultaneously in the same function):

@IBAction func accelerometerBMI160StartStreamPressed(_ sender: Any) {
    accelerometerBMI160StartStream.isEnabled = false
    accelerometerBMI160StopStream.isEnabled = true
    accelerometerBMI160StartLog.isEnabled = false
    accelerometerBMI160StopLog.isEnabled = false
    updateAccelerometerBMI160Settings()
    accelerometerBMI160Data.removeAll()



    let signal = mbl_mw_acc_bosch_get_acceleration_data_signal(device.board)!
    mbl_mw_datasignal_subscribe(signal, bridge(obj: self)) {(context, obj) in
        let acceleration: MblMwCartesianFloat = obj!.pointee.valueAs()
        let _self: DeviceDetailViewController = bridge(ptr: context!)
        DispatchQueue.main.async {
            _self.accelerometerBMI160Graph.addX(Double(acceleration.x), y: Double(acceleration.y), z: Double(acceleration.z))
        }
        _self.accelerometerBMI160Data.append((obj!.pointee.epoch, acceleration))
       print(acceleration.x)

        }

    }

    mbl_mw_acc_enable_acceleration_sampling(device.board)
    mbl_mw_acc_start(device.board)

    streamingCleanup[signal] = {
        mbl_mw_acc_stop(self.device.board)
        mbl_mw_acc_disable_acceleration_sampling(self.device.board)
        mbl_mw_datasignal_unsubscribe(signal)
    }
}

Thanks for any tips and help!

Comments

  • LauraLaura

    Please see the fuser in our tutorials. This is what it does.

  • borhenrykborhenryk

    Thanks Laura! This works fine :) Do you know how I can sample acc. and gyro. both on 10Hz frequency? Or if there is a resampling option?

  • LauraLaura

    Yes, our APIs allow you to change the sampling frequency, just follow the tutorials.

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