SMS via pic

[aratti]

Tray to connect your system as per the attached schematic.This works for me.

With MAX232 you should not use electrolytic capacitors. See the datasheet.

Make sure you have proper contacts in your layout.

.

Al.

[kenandere]

Thanks to your kind suggestions all, especially aratti;

In fact, Ajay Bhargav from 8051projects.net forum, I really appreciate his latest comment .

The solution is; making some additional connections at GSM serial port, as below;



Before I only connected, RX,TX and GRND pins of the GSM serial port.

And below you can see the general connection latest I made:



And a program to send sms and or call a phone number is as follows:

'Definitions
DEFINE OSC 4			'for 4 Mhz
'DEFINE OSC 8			'for 8 Mhz

DEFINE HSER_TXSTA 20h	'I wonder shall I define as DEFINE HSER_TXSTA 24h???
DEFINE HSER_RCSTA 90h	'same for all

DEFINE HSER_BAUD 2400	'for 2400 Baud rate
'DEFINE HSER_BAUD 4800	'for 4800 Baud rate
'DEFINE HSER_BAUD 9600	'for 9600 Baud rate

DEFINE HSER_SPBRG 25		'for 4Mhz/2400 & 8Mhz/4800 with an error %0.16
'DEFINE HSER_SPBRG 12	'for 4Mhz/4800 & 8Mhz/9600 with an error %0.16

DEFINE HSER_CLROERR 1	'same for all

' Initialization & Declaration
i var byte
TRISB=%00000000
PORTB=%00000000
TRISD=%00001111
PORTD=%00000000

' CHECK
FIRSTCHECK:
    HIGH PORTB.7
    PAUSE 500
    HIGH PORTB.6
    PAUSE 500
    HIGH PORTB.5
    PAUSE 500
    HIGH PORTB.4
    PAUSE 500
    PORTB=%00000000

GSM_CHECK:
HSEROUT ["AT",13]                    'Send AT to modem followed by a CR
HSERIN 5000, GSM_CHECK, [WAIT("OK")] 'Check OK reply, wait 5sec max.
HIGH PORTB.7
PAUSE 1000

HSEROUT ["AT+GMM",13]                           'Ask model name
HSERIN 5000, GSM_CHECK, [WAIT("T610 series")]   'Check model name
HIGH PORTB.6
PAUSE 1000

HSEROUT ["AT+IPR=2400",13]      'Set transfer speed
HSERIN 5000, GSM_CHECK, [WAIT("OK")]'Check OK reply, wait 5sec max.
HIGH PORTB.5
PAUSE 1000

HSEROUT ["AT+CMGF=1",13]            'send AT to modem followed by a CR and line feed
HSERIN 5000, GSM_CHECK, [WAIT("OK")]'Check OK reply, wait 5sec max.
HIGH PORTB.4
PAUSE 1000

PORTB=%00000000

BEGIN:
IF PORTB.5=1 THEN ERROR_CALL
IF PORTB.6=1 THEN ERROR_SMS
HIGH PORTB.7
pause 1000
LOW PORTB.7
if PORTD.2 = 0 then SEND_SMS
IF PORTD.3 = 0 THEN CALL_PHONE
PAUSE 1000
GOTO BEGIN

SEND_SMS:
HIGH PORTB.6
HSEROUT ["at+cmgs=",34,"XXXXX",34,13]
PAUSE 1000
HSEROUT ["this is a test message",26]
HSERIN 10000, BEGIN, [WAIT("OK")]'Check OK reply, wait 5sec max.
LOW PORTB.6
GOTO BEGIN

CALL_PHONE:
HIGH PORTB.5
HSEROUT ["atd[XXXXX];",13]
HSERIN 5000, BEGIN, [WAIT("OK")]'Check OK reply, wait 5sec max.
PAUSE 2000
LOW PORTB.5
GOTO BEGIN

ERROR_CALL:
FOR i = 1 to 5
HIGH PORTB.4
PAUSE 500
LOW PORTB.4
PAUSE 500
next i
PORTB=%00000000
GOTO BEGIN
    
ERROR_SMS:
FOR i = 1 to 5
HIGH PORTB.4
PAUSE 500
LOW PORTB.4
PAUSE 500
next i
PORTB=%00000000
GOTO BEGIN

' END
End

Thanks again for your attention and time, I will continue with :
- Improving the program to a real case scenario,
- Think more about the real case scenario, because at first stage I would like to use this as an alarm system for my garden house. I will need some sensors for unexpected visitors or animals.

Do you have any idea, what kind of sensors I can use to detect unexpected visitors?

Regards,

[aratti]

Glad to know you have finally your gsm system at work.

- Think more about the real case scenario, because at first stage I would like to use this as an alarm system for my garden house. I will need some sensors for unexpected visitors or animals.

Do you have any idea, what kind of sensors I can use to detect unexpected visitors?

Just take a look at one of my project @ http://techni.caliti.es/blog/2008/12...ontroller.html

Al.

[ScaleRobotics]

Do you have any idea, what kind of sensors I can use to detect unexpected visitors?
Regards,

Most (inexpensive) motion sensors use an infra red sensor with a fresnel lense on it. The heat of the human/animal is above background, so as it moves, the fresnel lense makes the heat hit and miss the sensor. This gives quick varying temperatures, where normal heating and cooling of the room, or outdoors, occurs slowly.

You can go to the hardware store and buy a cheap outdoor light and steal the parts out of it like this:
http://www.acehardware.com/product/i...LAID=109386813

Or buy the parts:
http://www.futurlec.com/PIR_Sensors.shtml

[Byte_Butcher]

Do you have any idea, what kind of sensors I can use to detect unexpected visitors?

These are nice little IR sensors. They even have serial interface. For outdoor use they'll obviously need some protection...

http://www.zilog.com/docs/devtools/PS0284.pdf
http://search.digikey.com/scripts/Dk...me=269-4710-ND


steve

[Dennis]

Hi all

As input sensors you could use security lights that have a PIR that have a 12Volt buzzer output and use that as the input trigger for your pic.
Is there any possiblity of using the mobile phone's camera to take a pic and send that as an MMS ?

Kind regards

Dennis

[suwanggoh]

hi kenandere,

i just want to confirm the connections of rs232 on the GSM side.

you short the pin 1,4,6 and short pin 7,8?

i succeed in sending sms from PIC, but i couldnt get any response from the phone t630.

thank

suwang

[kenandere]

Hello Suwang,

Yeah as say, 1-4-6 and 7-8.

Regards,

[dumato52]

Hullo every one thankyou for ur help;
I am doing project related to the one of kenandere above, but am not using the sensors, am using +5V to act as an interrupt to PIC16F84 microcontroller which is connected to the phone, the pic16f84 should send an SMS to the programmed number after receiving an interrupt;
My questions are;
How do i know whether my phone supports AT commands?
Can program above work on pic16f84?
Components i have so far
-pic16f84
-2330 nokia
-max232
pliz help me, i will be glad, thankyou in advance