GPS GIVING JUNK VALUES TO ATMEGA16

[prashant]

I M RECIEVIND JUNK VALUES ON LCD LIKE     RD_X$….5 AND SOME UNKNOWN CHARACTERS…

i m using atmega16a with 8mhz freq and baud rate4800/9600(both tried) and codevision for coding. for only just to recieve the gps data i m initially using following code….. 

 

it was supposed to print GPS standard data format….

 

#include <mega16a.h>

 

// Alphanumeric LCD functions

#include <alcd.h>

 

// Standard Input/Output functions

#include <stdio.h>

#include <delay.h>

 

 

char p;

 

// Declare your global variables here

 

void main(void)

{

 

// USART initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART Receiver: On

// USART Transmitter: On

// USART Mode: Asynchronous

// USART Baud Rate: 9600

UCSRA=0x00;

UCSRB=0x18;

UCSRC=0x86;

UBRRH=0x00;

UBRRL=0x67;

 

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

lcd_init(16)

;

lcd_putsf("starting");

delay_ms(50);

lcd_clear();

 

while (1)

      {      

      p=getchar();

      delay_ms(2);

                  

       lcd_putchar(p);

 delay_ms(20);     

      }

}

[Ashutosh Bhatt]

just go through our tutorial interfacing GPS with AVR micro controller

[Ashutosh Bhatt]

just go through our tutorials on GPS interfacing with AVR micro controller

[Author]

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