Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

GSM Modem reading sms with PIC18F4520

Status
Not open for further replies.
H

hez_91

Newbie level 5
Newbie level 5
Joined
May 21, 2010
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Singapore
Activity points
1,340
Hi,

I am working with a iTegno 3800 GSM modem and I require to wake the PIC out of sleep mode and retrieve the data in the SMS whenever I receive it. The programming language i am using is C.

What are the possible ways I could do this? I was thinking of EUSART Receive Interrupt bits but I am not sure on how to implement this.

Thanks
Wong
 

i think that you cannot wake up the microcontroller by usart. because modem doesnt procude a signal when received a sms.
i suggest you, first send sms to modem, and then call it. incoming call produce a square wave in the communication port of modem. you can use this square wave to wake up pic18f4520
 
  • Like
Reactions: kds187

    K

    kds187

    Points: 2
    Helpful Answer Positive Rating
otuzsubat said:
i think that you cannot wake up the microcontroller by usart. because modem doesnt procude a signal when received a sms.
Click to expand...

Sim300 sends a phrase of signals with details when a message is received. But i dont know about the iTegno 3800 modem

Nandhu
 

otuzsubat said:
i think that you cannot wake up the microcontroller by usart. because modem doesnt procude a signal when received a sms.
i suggest you, first send sms to modem, and then call it. incoming call produce a square wave in the communication port of modem. you can use this square wave to wake up pic18f4520
Click to expand...


Greetings,

You're right, and that square pulse can be used to wake up the pic using an external interruption pin... Thanks... in the modem that You use, what pin is that, that from the square pulse come from?

Thanks
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top