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GM862 can't receive any response

 
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GM862
Guest
GM862 can't receive any response
PostPosted: Wed Apr 08, 2009 1:11 am     Reply with quote
Hi,

i am trying to commincate with telit gm862-gps.

i have a circuit which can send sms and can make a call but i can't get any response. I tested my circuit with hyperterminal it is working correctly i can send data and receive data. and when i connect the module to hyper terminal i can send and receive data.

But can't receive any thing from module my code is simple.

Code:


while(true)
{
 printf("ATDXXXXXXXX;");
 putc(13);
 response = getc();
 //then i blink a led when any thing is received
}
.

when i connect it to module it calls the number but can't receive anything.
when i conncet it to hyperterminal it sends and can recieve data to.

i am using ccs 3.249 18F2620 running at 32mhz internal osc.

i am using just 3 pin connection (TX,RX,GND) and module works fine with hyperterminal with this connecion.

sory my exact code isn't here right now.

and i am using HW usart whith correct pins and i have ERRORS in #use_rs232 statement.

Any suggestions
Guest
PostPosted: Wed Apr 08, 2009 4:30 am     Reply with quote
post the complete code
GM862
Guest
PostPosted: Wed Apr 08, 2009 4:45 am     Reply with quote
complete code isn't with me but i will post it 3-4 hours later.

But as i mentioned before the module and my PIC are working whit PC.
GM862
Guest
PostPosted: Wed Apr 08, 2009 9:54 am     Reply with quote
here is my complete code

if i use my circuit with hyper terminal i get the data. when i conncet the gps module to hyperterminal i can get the data when i conncet the module to my circuit i can send data but i can't get the response.

Code:

#include <18F2620.h>

#use rs232(BAUD = 9600, XMIT = PIN_TX, RCV = PIN_RX, PARITY = N, BITS=8,ERRORS)

#use fast_io(A)                     
#use fast_io(B)

#fuses INTRC_IO,NOMCLR,BORV28,NOLVP,PROTECT,NOPBADEN,PUT,NOWDT
#use delay (clock = 32000000)


#include <variables.h>
////////////////////////////////////////////////////////////////////////////////
void main(void)
{
   setup_oscillator(OSC_32MHZ);
   SETUP_ADC_PORTS(NO_ANALOGS);
   port_b_pullups(TRUE);
   setup_comparator(NC_NC_NC_NC);
   setup_adc(ADC_OFF);
   setup_ccp1(CCP_OFF);
   setup_ccp2(CCP_OFF);

   set_tris_a(0x13);
   set_tris_b(0xFF);
   set_tris_c(0xC0);
         

   delay_ms(30000);             

   printf("ATE0");              //echo disabled
   putc(13);

   printf("AT+IPR=9600");
   putc(13);

   while(TRUE)                  //sonsuz döngü içerisinde
   {
      if(BTN_1 == 0)
      {
         delay_ms(100);
         if(BTN_1 == 0)
         {
            if(kbhit()) gps_location[0] = getch();
            printf("AT$GPSACP");
            delay_ms(100);
            putc(13);                 

            gps_location[0] = getch();

            for(sayac = 1; sayac < 10; sayac++)
            {
               bekleme_sure = 0;
               gps_location[sayac] = getch();
            }
         }
      }
   }
}
GM862
Guest
PostPosted: Wed Apr 08, 2009 10:05 am     Reply with quote
and by the way i am using EZ10 board
GM862
Guest
PostPosted: Wed Apr 08, 2009 11:24 am     Reply with quote
Problem solved.

I don't know but i received the response from interrupt it works now.

i did not understand why it was not working but for now i don't care important is it is working.
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