simple sending sms on gprs modem connect with at89c51 using AT-command

[Ni yanfang]

hello. I had done with set up gprs modem connect with at89c51 circuit(this is means I had done the hardware part, only left software).All I need i want to know sample of sending sms using AT command.
If you know , kindly send to my gamil: niyanfang21@gmail.com. Thank you so much.

 

[Jinzpaul4u]

Hello there,

Try these links

**broken link removed**

https://www.engineersgarage.com/forums/pic/interfacing-pic-16f688-telit-gprs-modem

Best regards,

 

[Ni yanfang]

Hello there,

Try these links

**broken link removed**

https://www.engineersgarage.com/forums/pic/interfacing-pic-16f688-telit-gprs-modem

Best regards,

OK Thank you so much.:smile:By the way, can I check with I will use gprs modem connect with AT89c51 without connecting with pc, can I have sample code for sending sms. I mean can I have exactly code for my project please.

 

[Jinzpaul4u]

Hello there,

Please check out these threads,

https://www.edaboard.com/threads/128810/

https://www.edaboard.com/threads/83420/

https://www.edaboard.com/threads/57901/

https://www.edaboard.com/threads/195757/


**broken link removed**


**broken link removed**


http://electronicsprojs.blogspot.in/2012/03/sending-sms-using-at-commands.html


Try and revert back me. ok??

Best reagrds,

 

[Ni yanfang]

hi, for hardware, I had done with hardware, but I do not know how to check whether it is working or not.
I am using gprs modem (Q2403), max232 with AT89C51. I connect max232 with AT89c51 in one circuit. but my lcd do not light when I connect with power. isn't right? Thank you.

- - - Updated - - -

Hello there,

Please check out these threads,

https://www.edaboard.com/threads/128810/

https://www.edaboard.com/threads/83420/

https://www.edaboard.com/threads/57901/

https://www.edaboard.com/threads/195757/


**broken link removed**


**broken link removed**


http://electronicsprojs.blogspot.in/2012/03/sending-sms-using-at-commands.html


Try and revert back me. ok??

Best reagrds,

Yes I will read and try first. And thank you so much. This is really useful. Have a nice day.

 

[sanket.joshi]

i have simcom module...
the sequence of commands to be followed for sending sms is as follow...

at
ati //not necessary
at+cops?
at+cgmr // not necessary
at+creg? // this is to check whether your sim responding or not
at+cmgf=1
at+cmgs="+91-mobile no"
<type message
<ctrl-z

first try this through hyperterminal...look at response of each command then try to handle it using microcontroller....

 

[Ni yanfang]

i have simcom module...
the sequence of commands to be followed for sending sms is as follow...

at
ati //not necessary
at+cops?
at+cgmr // not necessary
at+creg? // this is to check whether your sim responding or not
at+cmgf=1
at+cmgs="+91-mobile no"
<type message
<ctrl-z

first try this through hyperterminal...look at response of each command then try to handle it using microcontroller....

Morning. thank you. Sorry I forgot to tell you that I go through the steps already as you mention. And it was working successful in hyper terminal. may I know how to handle micro-controller?

- - - Updated - - -

i have simcom module...
the sequence of commands to be followed for sending sms is as follow...

at
ati //not necessary
at+cops?
at+cgmr // not necessary
at+creg? // this is to check whether your sim responding or not
at+cmgf=1
at+cmgs="+91-mobile no"
<type message
<ctrl-z

first try this through hyperterminal...look at response of each command then try to handle it using microcontroller....

Morning. thank you. Sorry I forgot to tell you that I go through the steps already as you mention. And it was working successful in hyper terminal. may I know how to handle micro-controller?

 

[sanket.joshi]

while using these commands in hyperterminal you must have observed response of each step.....
u have to send one command and then wait till correct response is captured...
like this you have to send all commands...

 

[Ni yanfang]

while using these commands in hyperterminal you must have observed response of each step.....
u have to send one command and then wait till correct response is captured...
like this you have to send all commands...

Hi. Thank you for your reply. I was successful on sending sms on hyper terminal altready. but I am not sure how to check my AT89c51 microcontroller working with using AT command?? do you have any ideas? THANKS.

 

[sanket.joshi]

if you want to send AT commands you have to send it to modem using RX/Tx...you have to set baud rate as 9600...
how to set baud rate you can refer following link....
https://www.google.co.in/url?sa=t&r...MbjIkjZnn6P1SX3DW-kzR_g&bvm=bv.49967636,d.bmk

- - - Updated - - -

after you set baud rate u can communicate with gsm module using serial port....
now you transmit at commands and use serial interrupt for receiving response from module...

 

[Ni yanfang]

if you want to send AT commands you have to send it to modem using RX/Tx...you have to set baud rate as 9600...
how to set baud rate you can refer following link....
https://www.google.co.in/url?sa=t&r...MbjIkjZnn6P1SX3DW-kzR_g&bvm=bv.49967636,d.bmk

- - - Updated - - -

after you set baud rate u can communicate with gsm module using serial port....
now you transmit at commands and use serial interrupt for receiving response from module...

Ok thanks a lot. i will read first.:-o