MultiWork Project

MultiWork is a project I have been working in my free time. It is an Android Based Measurement Tool. The smartphones have become very popular and almost everyone has one so I decided to start this project.

It is a Logic Analyzer, Frecuencimeter, LC Meter and Joystick to control my Robotic Arm (I will upload some photos later). The hardware is made by me with a dsPIC Microcontroller and communicates with the smartphone through Bluetooth with an HC-06 module.

You can see my article of this project in Spanish here.

Logic Analyzer Features

• 8 channels available
• Capable of decoding UART and I2C communications
• Data can be showed in a list with the decoded data or in a chart to see communication waveform
• Smartphone and tablet adapted UI
• Up to 40MSPS
• Buffer size for 16000 samples
• Trigger by state changing for each channel
• More features and protocols will be added by the time...

Requirements

• Android based device with at least Android ICS 4.0 (API 14)
• Electronic hardware which sample the data, schematics and PCB can be found here
• dsPIC firmware can be found here

Libraries/API

• MultiWork uses achartengine to show data waveform, thanks to Dan for this great framework and helping me to add annotations capabilities.
• The Protocol Decoder API used to decode the incoming data which is in com.protocolanalyzer.api.andres. The API is based on the abstract class Protocol, to create a new protocol just extends the Protocol class and create the corresponding decode() method. Example:

public class I2CProtocol extends Protocol{

	public I2CProtocol(long freq) {
		super(freq);
	}

	@Override
	public void decode(double startTime) {
		// code
	}
    }

The bits which are going to be decoded must be saved on logicData member of Protocol and the Strings with the decoded data must be saved on mDecodedData in the class TimePosition which define the start and finish time of the decoded event corresponding to the string calculating approximates time based on the sample rate frequency. The Strings can easily be added using the addString() method.

Distribution

APK can be found in the MultiWork directory.

License

The Multiwork project is released under BSD 2-Clause License