[SOLVED] help on serial programming with 8051. i got black box character.. :)

[romel_emperado]

hi again.. the code of this project is written for at89s51 and I would like to use at89s52.... I checked the data sheet of at89s52 and they are almost the same.. if that the case if i use at89s52 do i need to edit the code according to the new device or no need at all?

 

[ckshivaram]

no change is required.. the same hex file will work for the second controller tooo....

 

[romel_emperado]

excellent..!! thanks ckshivaram...

 

[romel_emperado]

HI ckshivaram,

WHY I cant send sms using At commands if I use the international format of number?

+639395016788 -- I cannot send sms with this format

09395016788 -- I can send with this format using at commands


both are the same when sending using your mobile

 

[ckshivaram]

there is no difference.. check the array size you have declared to store the number... when you use + and number it is 13 characters and when you use 0 it is 11 characters...

check it once...........

 

[romel_emperado]

i check it in the LCD before I wrote a code for sending sms..

all the numbers are displayed.

 

[romel_emperado]

I got it.. my sim card is the problem.. I changed sim and I can now send sms

 

[romel_emperado]

Hi ckshivaram

just an update of my work.. it's now working in the actual hardware.. thanks for helping me..

the prototype have the following features:

* accept commands from sms received. e.g. turn on/off devices

* capable of handling sensors for security purposes.

* the system is capable of sending reply about the current state of the system in a form of sms if status command is received from the sender.

**broken link removed**