Quick question that i am sure is rather simple but i cant seem to figure out. I am currently using a Telit GL865 Quad Module through a development board connected to my PC and am working away with it.
I now want to interface it to my microcontroller to enable the MCU to do all the work and fufill my application.
My question is though how do i set up the module initially to talk to the MCU. So to set up Baud Rate, Flow Control, Parity etc??
I know its an obvious question but just cant seem to figure it out,
The module has autobauding. Best is to start with a simple "AT". Just have a look at the Q&A as below.
I have hooked up my GSM modem to my PC and the SIM is registered on the network. But, I can not get the modem to respond to AT commands. I wonder if it needs a null modem on the rs232? From my terminal I see this….
As you can see it echos back in red, but does not give the response from the modem I would expect. I think it is something simple, but cant figure what is wrong.
The flow control is not active in command mode. Sending of SMS is still an AT command, where the flow control is off. As soon you start a CSD call or use GPRS the flow control RTS and CTS in is use. You can power it of by AT&K=0. If I am right, the buffer of the Telit is 4000 characters. Even if you use GPRS and send small packages of data no package will be lost. If you plan to send MB ot GB on GPRS than my recommendation is to use the handshake lines RTS and CTS.
Stephen, just tell it at next exhibition or at restaurant to all your business friends. If you are from Europe, then you are welcome to place a bulk order with me. If you are a student and will lead a group of developers in five years, then it would be nice if you remember me and tell them that there is a guy with skills in wireless living in Germany
Maybe it makes sense to read at my Blog http://www.gsm-modem.de/M2M/ or may Google+
Both contains tons of hints on Wireless M2M.
BTW, I am working on a eBook "How to design a M2M application on GSM and GPS"
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