TC65

Introduction Receiving UDP datagrams on the TC65 is easy but inefficient. You need to create a new thread if you want to receive data asynchronously. There’s no way of knowing if a new datagram has been received or not without hanging on the ::receive( Datagram ); method. This is quite weird considering you can do it in TCP. The real problem is it’s freaking slow. The Cinterion documentation just tells you “This method blocks until a datagram is received.”. What it doesn’t say is that nearly each time, it blocks for 100 to 700 ms after UDP datagrams have actually been received. And worse, this slowness/sleeping avoids the program from treating data and finally throws a little java.io.IOException exception : “No buffer space available”. I tried to give the udp receiving thread a higher priority than the other threads, I tried to make the TCP reception thread sleep a lot just in case it would lock some kind of network object, I looked on how could this method be implemented but couldn’t find a solution and don’t believe there’s one. ...

I’ve installed Windows 7 on my PC. I made an upgrade from vista. Everything was saved except the deploy/debug connection to the Cinterion’s SDK. But a little repair operation with the setup installer made it work. It’s pretty cool because when I switched from XP to Vista, well… I switched back to XP due to that problem. 22/12/09 update : MES doesn’t work fine on any other system than XP. You should try the JObexFTP tool instead. ...

WARNING: All the Cinterion related content from this blog will be removed to go to the javacint wiki soon. Please get used to going there. This page now is on the javacint wiki.

WARNING: All the Cinterion related content from this blog will be removed to go to the javacint wiki soon. Please get used to going there. Program updated ! As I told you in the comment where I released this TC65 SMS OTAP program, it didn’t support serial communication. Well, I have added this feature. The program is now able to directly send OTAP SMS, using a GSM modem. ...

WARNING: All the Cinterion related content from this blog will be removed to go to the javacint wiki soon. Please get used to going there. If you use the TC65 to transmit some frequent (with a transmission interval of less than 700 ms) data, you should know that the TC65’s has a poor TCP implementation considering the ACK management of sent messages. ...

WARNING: All the Cinterion related content from this blog will be removed to go to the javacint wiki soon. Please get used to going there. Update anything Cinterion gives specifications on how to send SMS messages to launch a remote Over The Air Provisionning (OTAP) operation. Recently, someone asked me : We have a little program on some TC65 chips that only send SMS, we would like to connect it to the software that you built. What would we have to do. Well that where the magic comes. You don’t have to touch any of the hardware. The only concrete thing you might have to do is enable GPRS on the sim cards of your M2M fleet. ...

WARNING: All the Cinterion related content from this blog will be removed to go to the javacint wiki soon. Please get used to going there. M2M projects are the type of project I like to work on. Connecting remote devices, making them work together, and controlling everything remotely are things i love ! I discovered the Cinterion TC65 (which belonged to Siemens then) 3 years ago. And it was a dream come true. I’ve been mostly working on it to build some powerfull GPS tracking software over GPRS. But I have also worked on some other projects making it communicate with some equipments using GPIO or serial port. ...

MOVED HERE: javacint / FAQ I decided to open source the content I wrote in my blog pages to the javacint wiki. Please use it and participate from now on.