In this article, I present an example showing how to connect an Arduino device to your PC using USB serial and Java.USB serial is available on nearly all Arduino based boards. Further, there are serial interface Java libraries thatcan connect to an Arduino.
'USB Chips: USB Host and Device Controller Chips' edited by Jan Axelson; The Java RxTx class (explained in Serial Programming:Serial Java) can also communicate with some USB devices. MATLAB Programming/Writing to a USB port; LPI Linux Certification/Configure USB Devices. D: Programming JAVA JSerialCommjava -cp D: Programming JAVA JSerialComm jSerialComm-1.3.11.jar. SerialTransmitInteger List COM ports comPorts0 = Communications Port (COM1) comPorts1 = USB-SERIAL CH340 (COM9) enter an integer 678 Read 32 bytes from COM port: Arduino received integer = 678 enter an integer 567.
If you are unfamiliar with data communications in general, take a look a theintroduction to data communications article; although itdoes not cover serial communication, it is still a good starting point for the unfamiliar.
For an out the box complete solution checkout our new BETA library tcMenu library for Arduino including remote control.TcMenu not only provides a full menu system with designer, but also remote control from Arduino to Java using RS232 or Ethernet.
This will require that you have the following components to hand:
![Usb Usb](https://micro-pi.ru/wp-content/uploads/2019/10/CP2102-%D0%BF%D1%80%D0%B5%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BE%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8C-USB-UART.jpg)
- Arduino device with breadboard and jumper wire
- 20x4 LCD display
- some microswitches & 4k7 resistors
- USB Connection to a computer (serial over USB)
- Java version 8 on the PC / Mac
- The>
Setting up the arduino sketch to run
Once everything is wired up, you will need to enter the pins used for the display and switches noted earlier into thesketch. Adobe premiere pro cs4 32 bit full version indowebster. Change the constants at the top of the sketch as shown in the example below (using your own settings).In my example I had the buttons connected on bins 24-26.Now we configure the serial communication speed, I set it to be 9600 baud but over USB, it can reliably run faster.Lastly, indicate which ports you wired up your LCD display to.As long as all is wired up correctly you should be able to run the script on your Arduino, the display should initialiseand look like the example below. If not, switch off and check your wiring and code carefully. The PWM contrast settingcan be adjusted in thesetup()
section of the script.Building the Java code on your PC / Mac
Now is the time to obtain and build the Java source on your PC / Mac.For Java development I recommend IntelliJ IDEA that I use myself and has both freeand commercial versions available for PC / Mac / Linux. Most Java IDE’s will be able to import the mavenpom.xml
asa new project, if you use this method all dependencies will be obtained automatically using the maven POM.There are several examples contained within the code, you want to look in thecom.thecoderscorner.example.datacomms.rs232commands
package. In order to run the project, run the class:com.thecoderscorner.example.datacomms.rs232commands.ui.ArduinoControlApp
If all is working at this point you should see the serial settings dialog requesting the port and speed (above left),choose the usual serial (COM) port that Arduino studio is using, and set the speed to 9600 or whatever you set theArduino side to.Once done you should see the main screen (above right), Connection status is shown in the lower left corner, and thestatus of the last command sent on the lower right.Sending a text message to the 20x4 display
To send a text message to the server, type some text in the text box and press send, the text will be transmittedto the server and displayed on the 20x4 display. Orange telugu movie titles background music free download. You’ll see the last command status will be set to OK very soonafterwards and the text will be on the 20x4 display on the board.Pressing any switches on the board
Likewise if you press any of the switches connected to the Arduino, they will show on the Java UI at the next statusinterval (set to approx 1 second on the sketch). There is a combined status update sent by the board every secondthat includes the latest switch states.Changing the LED combo boxes on the PC
If you tick any of the combo boxes in the Java application, you’ll see the L1 - 5 change on the Arduino display.More about the Java application
The Java application is split into two parts, User interface and data communication components, the communicationcomponents are in theprotocol
package, while the user interface parts are in theui
package.SimpleRS232ArduinoController
is where the serial communication to / from the Arduino take place. It implements the interfaceArduinoInterfaceControl
of which there is another implementation that works standalone, for running the application without a boardconnected to your PC / Mac.There are two Windows in the application, both are Java FX based and use the FXML format. They can be loaded intoScene Builder and designed graphically. There is a resources directory that contains both of the FXML design filesand a logo.