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ex17.c error (PPP)

 
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murad772



Joined: 30 Oct 2010
Posts: 5

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ex17.c error (PPP)
PostPosted: Mon Nov 01, 2010 10:54 am     Reply with quote

Hello,

I have internet development kit that have pic18f6722.

I want to use ppp to make a simple server.
The code compiles with no errors. But when run it on the kit nothing appear on LCD.
I have put printf functions in the main function to determine where is the error. I found that when it call "StackInit();" it does not exit the function so it does not execute the printf functions after the calling.

How can I fix it so I can connect using the dial up modem ?
Below in the main function of ex17.c , the problem is inside comments:

Code:
void main(void) {
   MODEM_RESP resp;
   char x;
   
   MACAddrInit();
   IPAddrInit();

   ISPInit();

   setup_adc_ports(ANALOG_AN0_TO_AN1);
   set_tris_a(3);    //set A0 and A1 to input for ADC
   set_tris_b(0);
   setup_adc(ADC_CLOCK_INTERNAL);

   lcd_init();
   









///////////////////////////////////////////////////////////////////////////////////
//here the problem happens


   StackInit();

// it does not exit from this function call
//////////////////////////////////////////////////////////////////////////////////






   
   while(TRUE) {
      if (!ppp_is_connected() && !ppp_is_connecting()) {
         printf(lcd_putc,"\fDialing");
         resp=ppp_connect(ppp_username, ppp_password, ppp_phonenumber);
         if (resp==MODEM_BUSY) {
            printf(lcd_putc,"\fBusy Signal");
            delay_ms(2000);
         }
         else if (resp==MODEM_NO_DIALTONE) {
            printf(lcd_putc,"\fNo Dialtone");
            delay_ms(2000);
         }
         else if (resp!=MODEM_CONNECTED) {
            printf(lcd_putc,"\fDial Error");
            delay_ms(2000);
         }
         else {
            printf(lcd_putc,"\f%LUbps", connected_baudrate);
            printf(lcd_putc,"\nNegotiating PPP");
         }
      }
      StackTask();
      HTTPTask();
      LCDTask();
   }
}
murad772



Joined: 30 Oct 2010
Posts: 5

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PostPosted: Mon Nov 01, 2010 11:06 am     Reply with quote

The error happens in the file called "Ex17.c" that comes with tcpip files
murad772



Joined: 30 Oct 2010
Posts: 5

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PostPosted: Tue Nov 09, 2010 12:34 pm     Reply with quote

UP ..

Please help.
When trace the code I found that the problem happens in the following loop:

while(kbhit(MODEM)) {fgetc(MODEM);}

it keeps looping. that code in the function "modem_init" in the file modem.c[/code]
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