interfacing PIC 16F628A to a Mobile Phone

[windowsxm]

Hello everybody,i am new to this forum and i am hoping that somebody will help me out in solving my problem.

Recently,i have started doing a project where by i interface a microcontroller(PIC 16F628A) to a mobile phone (NOKIA 6500) to send a SMS.after a lot of googling,i have decided to use AT commands as it is very easy to understand and i used C laguage(software - MikroC pro) to program my PIC.

How did i connect my PIC to the phone?

16F628A --> MAX232 -->DB 9 Female --> USB to serial RS232 converter(RS232 side connected to DB 9)-->USB A to USB A Female Adaptor -->mobile phone's cable (USB) --> mobile phone(NOKIA 6500)

What is my problem?
i can't seem to have my code sent from the PIC to the phone.

What are the tests that i have carried out?

1- i checked the PIC functionality by writing a simple code to continuously blinking a LED.
2 - i checked whether the phone supports the AT commands by typing in the commands using Hyperterminal.
3 - i simulated the the PIC and the code using (Proteus 7 ) and it works.

Can any one point out to the thing that i am doing wrong.
Thanks in advance

The code

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Code C - [expand]
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void main(){
UART1_init(9600);
UART1_Write_Text("AT+CMGF=1");
Delay_ms(2000);
UART1_Write(0x0D);
Delay_ms(2000);
UART1_Write_Text("AT+CMGS=");                //AT+CMGS=
Delay_ms(1000);
UART1_Write(0x22);                                        //write (")
Delay_ms(2000);
UART1_Write_Text("0123456789");        //number SMS send to
Delay_ms(2000);
UART1_Write(0x22);                                        // write (")
UART1_Write(0x0D);                                        // <CR> mean (ENTER)
Delay_ms(2000);
UART1_Write_Text("hi");                                //words to be sent
UART1_Write(0x0D);
Delay_ms(2000);
UART1_Write(26);                                        //ctrl+z
Delay_ms(2000);
UART1_Write(0x0D);                                        // <CR> mean (ENTER)
Delay_ms(2000);
}

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[nandhu015]

Post your code.

 

[windowsxm]

have added the code.

 

[nandhu015]

At the first look, there is lot of timing between text and enter. Reduce the timing(no need for a delay there).

 

[windowsxm]

Still no results,i tried to reduce and remove the delays as well.

 

[nandhu015]

Does the same sequence working fine from hyperterminal??

 

[windowsxm]

Yes and it works.