Pic to GSM Phone connection (HSerin problems)

[isaac]

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 Hyperterminal, did you set the hyperterminal Handshaking to Hardware or to None?

Ioannis

I set it to none
i even trid a null modem cable but all in vain
i dont have a scope here at home but i gonna get one 2morrow so i get have a good look

Isaac

[Ioannis]

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

Ioannis

[isaac]

Ioannis

Just for your info.
The problem was the cable.
I borrowed someones DLR-3P cable and it worked great with my project board.
I noticed that my cable we were having problem with was a DLR-3 cable without the P

Regards
Isaac

[Ioannis]

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

Ioannis

[pagi]

I'm planning to make a security system wherein I can connect any mobile phone. I've seen some connection diagrams of mobile phone, where do we connect the hardware USART of the PIC16F877 to the mobile phone, Mbus or Sbus? I have experience in interfacing the PIC to a GSM module, I was here wondering if anybody knows, is there a similarity in the AT commands of a GSM Module and a mobile phone? Does all phones support text mode? On last thing, I would really appreciate is somebody could provide me websites that give me additional help in this regard. Thanks!!!!!

[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.

AT commands are common in these modules to control. I'd prefer a module rather than a phone for control applications. See Telit, Wavecom and others too.

Ioannis

[DragonBall_6]

Hi,

Can I ask where can I buy the data cable DLR-3P ? In any nokia shop? because nowadays a lot of shop only sold the usb one not the serial port...hard to find ya...THANK YOU..

dragonball