wavex 1.3.4

WaveX Data Acquisition SDK

WaveX Python SDK

Python bindings for the WaveX acquisition system. The SDK provides access to EMG, IMU, insole, analog, and device state data through a callback-based API with NumPy array support.

Installation

pip install wavex

Quick Start

import time
import numpy
import matplotlib.pyplot as plt
import wavex

from wavex import *

buffer = []

def on_data(args):
    sample = args.EmgSamples[0, :].copy()
    buffer.append(sample)

daq = wavex.DaqSystem()

cfg = CaptureConfiguration()
cfg.set_emg_acq_x(enums.EmgAcqXType.Emg_2kHz)
cfg.set_emg_imu_acq_x(
    enums.EmgImuAcqXType.Emg_2kHz_RawAccGyroData_200Hz
)

daq.OnDataAvailable(on_data)
daq.ConfigureCapture(cfg)

daq.StartCapturing(0)
time.sleep(5)
daq.StopCapturing()

signal = numpy.concatenate(buffer)

plt.plot(signal)
plt.show()

Main Components

WaveX / DaqSystem

The main interface used to communicate with the acquisition hardware.

daq = wavex.DaqSystem()

daq.ConfigureSensor(sensor_cfg, 0)
daq.ConfigureCapture(capture_cfg)

daq.StartCapturing()
daq.StopCapturing()

CaptureConfiguration

Defines which data streams are enabled and their sampling rates. (p for WavePlus receivers, x for WaveX receivers)

cfg = CaptureConfiguration()

cfg.set_emg_acq_x(...)
cfg.set_imu_acq_p(...)
cfg.set_emg_imu_acq_x(...)

cfg.enable_insole(...)
cfg.enable_analog_channel(...)

SensorConfiguration

Configures sensor type, operating mode, and IMU full-scale ranges.

sensor_cfg = SensorConfiguration()

sensor_cfg.set_sensor_config(
    enums.SensorModel.Mini_EmgImu,
    enums.SensorMode.EMG_SENSOR,
    enums.AccelerometerFullScale.g_16,
    enums.GyroscopeFullScale.dps_2000,
)

Receiving Data

Data is delivered through a callback registered with OnDataAvailable.

def on_data(args):
    print(args.ScanNumber)
    print(args.EmgSamples.shape)

daq.OnDataAvailable(on_data)

The callback receives a DataAvailableEvent object containing NumPy arrays for all enabled channels.

Common fields include:

Field	Description
EmgSamples	EMG samples
AccelerometerSamples	Accelerometer data
GyroscopeSamples	Gyroscope data
MagnetometerSamples	Magnetometer data
ImuSamples	Fused IMU data
AnalogSamples	Analog input channels
InsoleSamples	Insole pressure data
ScanNumber	Number of samples in the current callback

Loading Existing Configurations

Configurations exported from the EMGandMotionTools software can be loaded directly.

daq.LoadConfiguration("WaveXConfig.cfg")

Notes

• Data arrays are provided as NumPy arrays.
• Copy data inside callbacks if it must be stored after the callback returns.
• Call ConfigureSensor() and ConfigureCapture() to configure before starting acquisition.
• Sampling rates and available channels depend on the selected acquisition mode and connected hardware.
• It's possible to change the data available period in StartCapturing.