1996scarlet / LpmsB-Android

This is an open-source unofficial Android client for Alubi LpmsB series.

LpmsB-Android

This is an open-source unofficial Android client for Alubi Lpms-B series.

What is this

Due to the lower version of the official open source apk, and the official new version of the APK does not provide source code. So I wrote a new open source demo.

Usage

0. Android Studio 3.2 or latest
1. Kotlin 1.2.51 or latest
2. Android SDK 28 or latest
3. You Android phone kernal version required 21 or above
4. Android Jetpack 1.0.0-beta3 or latest

Cautions

0. Please give this app bluetooth permission
1. You may need to pair Lpms-B before open the app

How to Build a Motion Identification System

This diagram is a dead-simple which described how to build an easy motion identification system.

Flask Server Example

from flask import Flask
from flask import request

app = Flask(__name__)

@app.route('/save', methods=['POST'])
def save():
    print (request.form.get('result','OKK'))
    return request.form.get('result','OKK')

if __name__ == '__main__':
    app.run(port=23456, host='192.168.0.2')

Response Data Type

• In Android source code, we use Kotlin MutableList<LpmsData> to save temp result.
• When the HTTP request is going to launch, we use GSON.toJson() function to convert temp result to formatted string.
• If you don't know how to parse JSON or unfamiliar with it, please check JSON.org.

Project Dependences

The project dependences are as follows.

• OKHTTP3 to replace Android default HTTP client.
• RxJava2 to make HTTP request and response async.
• Retrofit2 to build local HTTP function interface.
• GraphView to show real-time data in chart.

JSON Example

• Single LpmsData(X-float,I-integer,L-long) {"acc":[X,X,X],"euler":[X,X,X],"frameNumber":I,"gyr":[X,X,X],"imuId":I,"linAcc":[X,X,X],"mag":[X,X,X],"pressure":X,"quat":[X,X,X,X],"timestamp":L}
• List of LpmsData [{Single LpmsData},{Single LpmsData},{Single LpmsData}...]

FAQ

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