JObexFTP from Ricardo Schmidt

December 20, 2009 — Florent Clairambault

Ricardo Schmidt made a great multi-platform TC65 control and file management tool called JOBextFTP. This can be used for anyone whose Module Exchange Suite (MES) doesn’t work or doesn’t work correctly.

The biggest effort is put on managing the OBEX file transmission protocol, but it also does offer some simple methods that can be integrated in your development process, like “turnOn”, “turnOff”, “getTime”, “runApp”.

I’m really sorry but I didn’t take the time to test it as I’m currently not making some TC65 development. But it looks very operational to me.

Maybe I should start a list of useful TC65 applications. I can already see this one to help you deploy programs and files locally and my SMSOTAP to help you deploy programs remotely.

Here is the email Ricardo Schmidt sent me on the 17 December 2009 :
I modified and formated some parts of the original mail.

Hello Florent,

With Ondrej ObexTool sources, that I met through your blog, I made up a new tool (think OO). So I made a library to help developers make multiplatform easy communication with TC65 and simmilar modules.
I’m already using it in a desktop configuration program for my M2M application and it just works great.
It have some TODOs and maybe some bugs, but it have a nice object oriented programming. Also I abused of the exceptions, becouse this project is not just an application, but also a library. You can use it to develop your configurator programs, its very easy to do with it.
The code is fully in english, but in future I pretend make it multilanguage. For now it just garantees that TC65 is going to work with it, but I belive TC65i and XT75 should work as TC65, since it under the same AT “platform”.

Some nice features in the library :

  • Auto turns on/off the module
  • If for some previous crash it stayed in DATAMODE, it sends the +++
    until it get the COMMANDMODE again.
  • You can choose for seeing verbose messages and for seeing the AT
    communication.
  • You can send a String as a file to the module.
  • You recieve a file as a String from module (since writing a file is easy).
  • Working in windows platf (under test)

Some nice features in the application :

  • Argument configurable on/off module, verbose and show atcomand.
  • Download, upload and list files just in one connection (no limit) ex.: jobexftp /dev/ttyACM0 -u arq1.ext arq2.ext arq3.ext arq4.ext -l -d filetodown.ext -V -A
  • Option to just stdout the file. (sometimes we just need to see the
    contents)

TODOs:

  • Documentation (kinda important)
  • Auto run jars (in library is ready, just for app)
  • Choose folder to send the file (easy task)
  • MacOSX adaption (maybe its already working, I dont have any macs to test)
  • Multilanguage

The listing comes in the XML from library, I think that this should be treated just in the applications, since the xml is very good for programming analyse.

Hope you like it.

You can get the latest sources from project kenai : http://www.kenai.com/projects/jobexftp

Kenai is NetBeans integrated, and it uses subversion. This project is opensource under GPL (application) and under LGPL (library).

Thank you for the attention,
Ricardo Schmidt

Here is an other message Ricardo sent on the 18 March 2010 :

Hello developers,

Due to the kenai closing, and to have the best control version system, JObexFTP have moved to github.com.
Now we can manage projects better with git control version. If you dont know Git, you should!
The Kenai’s JObexFTP will be closed soon, the repository is already deleted.
Note: The old JObexFTP versions are lost due to new commit.
Please consider joining my project.

What is JObexFTP?
Its a fully opensource library (and application) to transfer files from/to obex server.
You can use it in any J2SE application to enable java communication to module without third party app. You can also use it as a MES in unsupported cinterion plataforms like Linux.
For now it just supports cinterion modules due to ATCommand spec.
It needs RxTx library to have the serial communication.

JObexFTP news:
Now we have fully OO obex objects (files/folders).
The downloading files is speeded up.

Under development:
Human readable folder listing
Multilanguage

Known issues:
Deleting multiple files is buggy and needs reconnection. (Its also buggy in windows MES, but here is a way more buggy)
In Windows sometimes it takes more time to have obex ready to read folder listing (I hate you microsoft)

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TC65 Module Exchange Suite (MES) problems

October 3, 2009 — Florent Clairambault

When you want to locally deploy software on your TC65 chip, you need the Module Exchange Suite (MES). If it doesn’t work, it won’t tell you why, finding out why can be quite tricky.

If you want to find out why the communication with your TC65 failed, the best way is to use the portmon tool and see what is exchanged between the MESServer.exe and the chip.

I collected 3 portmon captures that could help you diagnose your MES communication problems :

  • Here is a successful MES files listing at 19200 bps. You can see that it sends the “AT+CGMM” at different bit rates unless it gets a good response. Then it sets some serial communication options. And then it sends the “AT^SQWE=100″ commands which fails and then establish a successful link using the “AT^SQWE=3″ command.
  • Here a failed MES file listing. Here, after the “”AT^SQWE=3″” is sent, MES sends a 26 bytes message and receives a 41 bytes message from the chip. Then it should request the file listing. But here, MES doesn’t request anything. Maybe MES doesn’t work well, or maybe the reply from the chip doesn’t satisfy his requirements.
    Anyway, after that it should send a 27 bytes message containing : “x-obex/folder-listing”, and it should get the file listing. But it doesn’t. It reads on the serial port like if it was still waiting for something. And finally, it closes the connection (with “+++”).
  • Here a totally failed communication. Here it’s because the modem gets stuck on waiting for the modem hardware flow control (“IOCTL_SERIAL_GET_MODEMSTATUS”) when it’s only a 3 wires (TX,RX,GND) communication. So MES never reads or writes anything.

If you have the same kind of problem, you can send me your portmon capture file.

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