-Delphi tutorial: serial comms, i.e. Using the COM port Bi-directional Communications 'Master'/'Slave' two computer system This has good information, and a search button at the bottom of the page Please don't dismiss it because it isn't full of graphics, scripts, cookies, etc!
- Arduino Delphi Serial Communication With Arduino Download
- Serial Communication In Arduino
- Serial Communication Software
I am old fashioned. I disavow any responsibility for things you may elect to do. In particular, I disavow any responsibility for any consequences arising from connections you make between devices. You can't just plug 'anything' into your computer or anything else! In particular, make sure that you aren't assuming that an RS-232 interface can be connected directly to, say, an or BASICstamp, or PIC or other. There are notes on some of those issues on, for those of you who need them.
Enough 'lawyer feeding'. Let's turn to the Fun Stuff.
If you have already read my page 'dt4r' (the illustrations just a little way down the page will be familiar), you can that isn't duplicated THERE! This is one of the more advanced tutorials in a series which shows you how to link two devices using serial comms. In the tutorials, the 'devices' are a Windows PC running programs written with Delphi and an. However: Either device could be replaced by another.
Many of the issues discussed here are general, but I find that principles are best understood when backed up by examples of their application. If you want to know more about the source and format of these pages. It may be easier to read this if you re-size the window, so that it does not use the full width of your screen. The Delphi sourcecode is available for download. The Arduino sourcecode is presented here in full, and you can copy it and paste it into your Arduino development environment for compilation and upload to your Arduino. This page are a bit rough and ready.
Explanations are sketchy. But the code DOES work. I'll try to come back to this and improve it later. Challenge Before I present the tutorial: A challenge for you: If you are an advocate of another language, write whatever is needed to connect a PC (or other device) to the Arduino with switch and LED and Arduino program as presented here. In other words, replace what is plugged into the Arduino, but leave the Arduino side of things as it is in the essay below. If you succeed, and publish the details, with full sourcecode for the language of your choice, I would be glad to post a link to your work here,.
Two computers; one system For many years, for a number of different reasons, I've wanted to hook a microprocessor to a 'big' computer, and have them talk to one another. These days (August 2010) I am using the wonderful Arduino for microprocessor projects, and a Windows XP computer for my 'main' work.
The material below could be used with other devices. In particular, if your objective is to connect some serial device to a 'big' PC, you will find helpful material, I hope. In the diagram below, if you assume that the 'some serial device' is a PC, you see two PCs attached to the Arduino. The one on the left is there for when you are setting up the Arduino to do whatever you want it to do with the other PC. It would normally unplugged, taken away after the system had been built. The set up above is pretty general. Even without restricting what it implies, you can have two scenarios.
In order to explain the scenarios, I need to say what I mean by 'Master' and 'Slave' in the rest of this essay. A 'master' device is in charge. The 'slave' device will 'speak when spoken to'. It may get on with various things when it isn't commanded by the master to be doing other things, but it will not 'come up' on the serial channel, aka 'serial link' between master and slave unless the master has told it to. The master may 'speak' to the slave in an imperious manner, just issuing a command, and assuming the slave will execute it without any reply. If, for instance, there was an LED attached to the slave, the master might send a 'turn LED on' command'.
Or, the master might 'say' 'Turn on the LED, and tell me that you've done it.' In the latter case, the master would have to be programmed to look for the slave's reply. You can build systems like the above in which the 'Some Serial Device' is the master, and the Arduino is the slave, and you can build systems the other way around (Arduino as master, other serial device as slave.) In the work so far within this tutorial, an example of a Windows XP computer as master, with an Arduino as slave has been created.
(The hard parts of doing the reverse are all solved, and part of the first solution.) It is all well and good thinking in general terms, but eventually it is necessary to get down to cases. For the work to be discussed, this is the set-up I was using. The is a neat, inexpensive solution to the problems arising from the fact that the PC uses RS-232 serial comms and the Arduino is a TLL device. I'll try to expand on that later.
(See my, for a badly written 'answer', in the meantime.('Hardware' section, near top.)) N.B.: The 'Rx'/'Tx' markings on the device, and on the diagram above cause people no end of confusion. They stand for 'transmit' and 'receive'. But relative to which device??? There's a signal FROM the PC TO the Arduino that is marked 'Tx' above.
And we are transmitting from the PC to the Arduino. But the Arduino might well call that line 'Rx', as it is the line the Arduino is receiving on. Not rocket science, but easy to get turned around. Follow the diagram: Connect the signal marked 'Tx' on the PA4B to digital pin '3' of the Arduino, the signal marked 'Rx' on the PA4B to digital pin '4' of the Arduino, enter the Arduino programs given below, and all will be well.
README.md CmdMessenger A messaging library for the Arduino and.NET/Mono platform C# Build status: VB# Build status: Arduino Build status: Introduction CmdMessenger is a messaging library for the Arduino Platform (and.NET/Mono platform). It supports multiple transport layers: serial port over USB, Bluetooth, TCP/IP (under development) The message format is: Cmd Id, param 1,., param N; Although the field separator ',' and command separator ';' can be changed The library can.
both send and receive of commands. Both write and read multiple arguments. Both write and read all primary data types. Attach callback functions any received command The library supports any primary data types, and zero to many multiple arguments. Arguments can either be sent in plain text (to be human readable) or in binary form (to be efficient). With version 3.x also comes a full implementation of the toolkit in C#, which runs both in Mono and Visual Studio This allows for full 2-way communication between the arduino controller and the PC. If you are looking for a Python client to communicate with, please have a look at Requirements.
Arduino Delphi Serial Communication With Arduino Download
Earlier versions of the Arduino IDE will probably work but have not been tested. Downloading This package can be downloaded in different manners. The Arduino Library Manager:. The PlatformIO Library Manager:. By directly loading fetching the Archive from GitHub:.
Go to. Click the DOWNLOAD ZIP button in the panel on the. Rename the uncompressed folder Arduino-CmdMessenger-master to CmdMessenger.
You may need to create the libraries subfolder if its your first library. Place the CmdMessenger library folder in your arduinosketchfolder/libraries/ folder. Restart the IDE. For more information,. If you want to have a package that includes all referenced libraries, use the pre-packaged library.
Serial Communication In Arduino
Download the package as a zipfile or as a tarball. Copy the folders inside the libraries folder to you your arduinosketchfolder/libraries/ folder. Restart the IDE. For more information, Getting Started Get to know the library, by trying the examples,from simple to complex: Receive The 1st example will make the PC toggle the integrated led on the Arduino board.
On the Arduino side, it demonstrates how to:. Define commands. Set up a serial connection.
Receive a command with a parameter from the PC. On the PC side, it demonstrates how to:. Define commands. Set up a serial connection. Send a command with a parameter to the Arduino SendandReceive This example expands the previous Receive example.
The Arduino will now send back a status. On the Arduino side,.
it demonstrates how to:. Handle received commands that do not have a function attache. Send a command with a parameter to the PC. On the PC side, it demonstrates how to:.
Handle received commands that do not have a function attached. Receive a command with a parameter from the Arduino SendandReceiveArguments This example expands the previous SendandReceive example.
The Arduino will now receive multiple and sent multiple float values. On the arduino side, it demonstrates how to:. Return multiple types status.
Serial Communication Software
Receive multiple parameters,. Send multiple parameters. Call a function periodically. On the PC side, it demonstrates how to:. Send multiple parameters, and wait for response. Receive multiple parameters.
Add logging events on data that has been sent or received SendandReceiveBinaryArguments This example expands the previous SendandReceiveArguments example. The Arduino will receive and send multiple Binary values, demonstrating that this is more efficient way of communication. On the Arduino side, it demonstrates how to:. Send binary parameters. Receive binary parameters. On the PC side, it demonstrates how to:. Receive multiple binary parameters,.
Send multiple binary parameters. How callback events can be handled while the main program waits. How to calculate milliseconds, similar to Arduino function Millis DataLogging This example expands the previous SendandReceiveArguments example. The PC will now send a start command to the Arduino, and wait for a response from the Arduino. The Arduino will start sending analog data which the PC will plot in a chart This example shows how to:. Use CmdMessenger in combination with GUI applications. Use CmdMessenger in combination with ZedGraph.
Use the StaleGeneralStrategy ArduinoController This example expands the SendandReceiveArguments example. The PC will now sends commands to the Arduino when the trackbar is pulled.