[td]

THANKS FOR REPLAY…..

 I WILL PASTE MY CODE.BUT I DONT KNOW HOW TO POST. BCOZ THE PROGRAM IS TOO LARGE. I USED    [/CODE]

 

THEN ALSO ONLY SMALL PORTION IS INCLUDING WITHIN THAT TAG….

 

 

I GOT READY MADE PROGRAM./IN THAT I HAVE DONE SMALL CHANGES TO DISPLAY ON HYPERTERMINAL INSTEAD OF LED.THEN ALSO I M NOT GETTIND..

 

PLEASE GUIDE ME..

 

[CODE]   [/CODE]

 

THEN ALSO ONLY SMALL PORTION IS INCLUDING WITHIN THAT TAG….

 

 

I GOT READY MADE PROGRAM./IN THAT I HAVE DONE SMALL CHANGES TO DISPLAY ON HYPERTERMINAL INSTEAD OF LED.THEN ALSO I M NOT GETTIND..

 

PLEASE GUIDE ME..

 

[td]

i didnt get any solution……………..

now also the response of the modem is not going to pic………..

[td]

here  i m using 8mhz internal oscillator.for that i use

OSCCON =0b01100010;

(in 18f45k20)

is ther any additional registers i have to set for this?may be because of this, receiver part is not ok.

and we are using baud rate 9600.

please guide me..

[td]

 here i m using gsm module. i directly connect gsm module and controller.

i have connected rx,tx,vcc,power key and ground of modem.is there any extra connections in modem?

when i load the pgm to pic, and connected with modem, i can send sms from modem to mobile. but the response of the modem is not going to pic.ie, when i give through pic, AT+CMGR=1, modem can read the sms.but that the response of modem(+CMGR: “REC READ”,”+918108111649″,,”12/07/22,14:24:11+22″
Hello
OK) is not going to pic.

please give me solution.. please guide me…

[td]

 thanks for reply.

how can i connect level converter in between modem and pic?now i connected

pic tx

---

modem rx

pic rx

---

modem tx

and connected max232  input pin(rx)

---

modem tx

                        max232  output pin(tx)

---

modem rx

ie, level convertr parallelly.

 

 

without connecting this max232, i can send sms in to mobile.

but the problem is response of modem is not going to pic

[td]

hi

 

in this project pic is not getting the response from modem.

i just write the AT command, then modem is responding OK.but pic is not getting that response.i tried to print the response from modem.but i m not getting any output.

when i checked pic and hyper, its working and checked modem and hyper.that is also working. ang when i connected pic and gsm modem, modem is getting all the commands from controller.and i can send sms from modem to mobile.but in case of sms reading, modem is responding for AT+CMGR=1.

but pic is not getting that response.ie,from pic to gsm, transmission is ok.but from gsm to pic, not working.

 

please help me to sove this problem

[td]

thank for reply..

my pic is working at 3.3v and modem at 4v.so why should i use level converter? i connected rx,tx pin of modem to tx,rx pin of pic.

and connected level converter(max232) parallel to pic(used only for watching in hyper)

 

i can send sms from modem to mobile.and modem can read the sms..but the response of the modem is not going to pic

 

 

[td]

i m not giving the delay aftr AT+CMGR=1

 

 

putrsUSART(“AT+CMGR=1”);
putcUSART(0x0D);

while(BusyUSART());
gets(a);

 

 

and i connected modem and pic directly- rx of pic to tx of modem and vice verse. but then also nothing is going to tic.ie, response of modem is not going to pic

[td]

in my program, i have written like this

AT+CMGR = 1

when i re-write in last post, AT changes to AM. sorry for the mistske.

 

please give me one solution to my problem.how can i give modem response to pic?

[td]

when i connected pic and levelconverter to pc, the above program is working fine.but, when i connected modem and pic, i can send sms.and modem can read the sms.but when the modem execute the AM+CMGR=1 command, the modem response string is not going to pic. please help me to solve the problem..

[td]

i changed the steps, but i m not getting the string…

+CMGR: “REC READ”,”+918108111649″,,”12/07/22,14:24:11+22″
Hello

OK

 

here is the pgm……

 

putrsUSART(“AT+CMGR=1”);
putcUSART(0x0D);

while(BusyUSART());
gets(a);
Delay1KTCYx(75);
putsUSART(a);

}

 

void gets(char *buffer)
{
  unsigned char data;
 do
  {
    while(!DataRdyUSART());// Wait for data to be received
    data = getcUSART();                         
    *buffer = data;
    buffer++;              // Increment the string pointer
  }
while(data!=’K’);
*buffer=’’;
}

 

please help me to print the modem response….

 

thank you

[td]

thank you 

 

here your program is for getting hello only..but the modem response is 

 

+CMGR: “REC READ”,”+918108111649″,,”12/07/22,14:24:11+22″
Hello

OK

so 1st we have to read these whole string.how can i read this whole sting?

i used some inbuilt functions for reading charecter wise.but some strange characters are coming.here is my code.

 

for(i=0;i<70;i++)

    a=getcUSART();

}
putsUSART(a);

how can i input that whole sting to pic?

 

 

 

[td]

thanks for reply..

 

what you mean by

if(Rcv_Byte==arr1[count]||count>5)

 

is that necessary to set flag??

[td]

Thank you for reply.

 

i have reduced the delay .and took the buffer like a[50],

in both case stange characters are coming.

[Author]

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