Discussion in "Project Addition or Changes" started by    Helia    Feb 9, 2017.
Fri Feb 10 2017, 11:00 AM
#11
Hi
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Sat Feb 11 2017, 09:22 PM
#12
I made a few changes to make programming easier.
Remember to add comments , it makes understanding and maintaining
your code much easier.
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Tue Feb 14 2017, 06:18 AM
#13
Thank you
when we send a message the message is not getting displayed but the AT commands are getting displayed.Is it like that or the message should be displayed.
Tue Feb 14 2017, 06:11 PM
#14


Thank you
when we send a message the message is not getting displayed but the AT commands are getting displayed.Is it like that or the message should be displayed.

Helia


Most modems you can be set to echo or not echo AT commands.
Other messages are not usually echoed.
Check your modem manual for details, they are not all the same.

Thu Feb 16 2017, 04:37 PM
#15
Hi
This is what we get on the lcd when we burn the code .
Is the message read by the gsm ?
I wanted the read message to be displayed on the lcd so that we know that the gsm is reading the message.

Thu Feb 16 2017, 05:56 PM
#16


Hi
This is what we get on the lcd when we burn the code .
Is the message read by the gsm ?

Helia


You will have to post your full code
and a wiring diagram of your project.

There a many AT commands that get a simple answer.
If you send the command and get the right answer you can be sure the
modem is seeing you.
Your display is garbled, so something is wrong.
Probably with your display routine.
Fri Feb 17 2017, 04:20 AM
#17
This is the proteus simulation and the code.. we are getting the message displayed on proteus..but actually when we are trying on hardware we are just getting the at commands displayed and cant read the msg.. please help
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Fri Feb 17 2017, 08:02 AM
#18
The syntax should be like this
REC READ :"number who sent the message ,text message .
In our case as seen in the lcd pic posted previously,the lcd only displays till R of read and the further details does not get displayed on the lcd. Should the remaining part of the message be displayed on the next line of lcd and if so how to go about it?

Mon Feb 20 2017, 09:52 PM
#19


The syntax should be like this
REC READ :"number who sent the message ,text message .
In our case as seen in the lcd pic posted previously,the lcd only displays till R of read and the further details does not get displayed on the lcd. Should the remaining part of the message be displayed on the next line of lcd and if so how to go about it

Helia



Space in the 89c51 you are using is limited.
If you change the input buffer size to 90 by changing
BUFFERLIMIT equ 90 you should be able to store the full reply.
You could run out of memory, so increase the size in 10 byte steps.


The LCD is obviously limited to two rows of 16 characters, so you will need
to scroll the display, that is, show part of the message for a few seconds,
then clear the display and show the next part.
Practise using the display, then move on to scrolling the message.
To use both lines.

Working with a micro as limited as the 8051 is harder than working
with a better chip.
Working with a limited display like a 2 line LCD is harder than workng
with a PC display
Working in assembler rather than say....'c' makes it even harder.
Do worry if it seems difficult.. it is




[ Edited Tue Feb 21 2017, 01:36 AM ]
 sankalp_s like this.
Thu Mar 16 2017, 09:15 AM
#20
hi.. the following code is not working on hardware.. the msg what we are sending is not gettng displayed on lcd could you please help us out....

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