CmdMessenger Library: Update the Wiki ?

Projects Interfacing w/ Software on the Computer
1

This week I have updated CmdMessenger Library. Which is a simple Serial-based Communications Framework for the Arduino. It all explained the following README file:

My question now is:

Shouldnt we update the old links in the Arduino Wiki to point to the newest version of this Library ? I contacted the library's original author (Neil Dudman) a while ago, but received absolutely no reply. However this library is an excellent alternative to Firmata and should be pretty useful for a lot of people. No-one is really going to see it unless it gets a proper, up-to-date link on the Wiki.

The Official Libraries page (Libraries - Arduino Reference) is missing any kind of link or reference to CmdMessenger. However on the page it also mentions:

"Corrections, suggestions, and new documentation should be posted to the Forum."

I guess if no-one here objects we can just go ahead and update those relevant links? Many thanks.

2

Hi,

I've been playing with CmdMessenger. It's really neat.

I need bi-directional communication for my project, and I'm using Processing as a GUI. I need something on Processing's end to interpret CmdMessages sent from Arduino.

I was looking through the code of CmdMessenger and it doesn't look too hard (though I am a novice programmer). Presumably I could make a command interpreter for Processing by looking through the code of CmdMessenger for Arduino and making something similar in Processing? Maybe even make a library out of it.

Does anything like this exist already?

I'm posting here because this seems to be the only thread about CmdMessenger on the Arduino forum so far.

3

Thanks for sharing CmdMessenger.

Is there any reason why I can't use it with SoftwareSerial and a Bluetooth module? I don't seem to be able to get data across the link whereas with a cable it works fine.

SoftwareSerial blueToothSerial(RxD,TxD);
CmdMessenger cmdMessenger = CmdMessenger(blueToothSerial, field_separator, command_separator);

All suggestions gratefully received.

4

Beardy241:
Is there any reason why I can't use it with SoftwareSerial and a Bluetooth module? I don't seem to be able to get data across the link whereas with a cable it works fine.

I've tested it over a Bluetooth HC05 module and it seemed to work just fine. Never tried SoftwareSerial as that is incredibly slow and uses up all of the available CPU.

5

Thanks dreamcat

When I say SoftwareSerial - I mean the NewSoftSerial 11 (beta) from Mikal Hart - formerly called NewSoftSerial.

NewSoftSerial 11 (beta) | Arduiniana Are you meaning the same? (or wasn't there an original SoftwareSerial library?)

I had been using the Messenger library but it seems the Bluetooth connection (using Seeeduino Twig Bluetooth Serial module) cannot carry a Return Carriage which Messenger needs to mark the end of a message. Moving up to CmdMessenger is great because of the ";" message delimiter.

My problem is that now telling CmdMessenger to talk over a bluetooth connection seems to kill all communication.

I'll do some more testing (fiddling!)

Cheers

6

Thanks again dreamcat.

Encouraged by the fact that it's working for you, I've stripped right back to the start and hacked through lots of examples...

I now have CmdMessenger talking to Director over Bluetooth (in both directions). Yippy-i-ay!

It isn't yet working with my project code but I suspect there's something conflicting somewhere. I've not found it yet but it's a reasonably large project.

Thanks again.

Onwards....!