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After the "LOST" I suppose planes too? OK I 'll wait you with beers!

Ioannis

Yes, me too skimask, can you? And I have a few others too...

Really now tyrantvivi. I supose this is the largest thread on the matter. So even if you cannot fully understand the exposed ideas and...

I would strongly recommend to use mobile modules that support native serial communication. Not by USB adaptors.

Try Wavecom, Telit, Ericsson or other similar. They are made for this purpose.
...

This is not general purpose forum! We do only Pic Basic and specially MELABS PicBasic language!

Ioannis

Mbus or Sbus?

Depends on the phone.

Not all mobiles support text. Old Ericsson used to support PDU format only. Nokia's do support text. All of the GSM modules I checked support text too.
...

Oh, doh! What stupid case! I am glad you did it!

Ioannis

After all the suggestions, I think wishing to you Good Luck is the last resource!

Ioannis

I don't know the difference between these two.

But,

1. Are you sure that Rx and Tx are connected correctly to the mobile? May be they are reversed?

2. When you tried the mobile with...

What I see is in the first case only AT. Where is the rest of the string?

Something is not working here. Check your overall setup of the PIC. Are you sure about the loaded program in the PIC...

Make the file smaller jpg, png, bmp. No more than 200kb. This size is more than enough!

About the problem not monitoring try smaller resistors like 4K7 or smaller. May be your driver from the PIC...

Since you can send and receive with the current cable I don't see why you should change it.

Also please note that the phone might send other characters too, like more CR and LF.

You said you...

First you do not need to use the RTS or other signal as long as you have low data rate and be able to process the data. I am using the 9600 mobile modem to transfer blocks of 66 bytes without any...

You are welcome.

Of course I cannot debug from here, but can suggest to send the commands from terminal program and check what the phone responds.

If all seems OK then check if the PIC...

General all the above lack the response from the mobile. Every command has a response and that response comes with different timing. Other sooner other later.

So my suggestion is to:

[1]: Wait...

Hmm, I think there is a general misunderstanding in this forum.

We cannot help if we don't see any code that you have tried. There are many examples in this thread (try from the page 1 and after)...

What have you written up to this moment? Can we see you project or is it ""TOP SECRET"?

I know the thread has grown exponentially, but have you read the previous posts? There are a lot snippets...

I have tried 6210, 6310, 6310i, Wavecom Fastrack, Telit and long time ago the Falcon mobile modem. All work simply by connecting them. Plug and Play sort of speak. After you type ati3 they respond...

What do you mean by "how is the modem activated now?"

It is always On! If you call the mobile from another computer with a dialup modem through terminal and have your mobile also connected to a PC...

I don't think that 6230 was on the market at the time NavMicro refered to 62xx. I think he meant 6210 like phones.

Anyway USB and RS232 are not interchangable! Not the D+ D- relate to Tx and Rx of...

Hi. Where I live, a ready made cables (e.g. MobileAction) are way to cheaper than building one. I don't see why you should deal with it...

Ioannis

Sorry, cannot help any more. It seems to be something with your mobile. All the schematics is OK. About PDU I have no idea and to be honest, I don't want to get!!!

I always used phones with text...

Yes. Please do disable the response from the mobile since everything that you type is echoed back so you can see it on the terminal window. But on the microcontrler it is not needed. In fact, it...

As Steve asked, did you used the 232 chip? What do you mean by "only the right portion"?

Ioannis

Have you set the mobile to TEXT SMS mode prior to use the code you sent as an example?

Also have you disabled the echo of the device (by ATE0)?

Test the same commands with a terminal to compare...

I suppose you did change also the crystal from 4 to 8MHz, not only the Define, right?

Ioannis