GPS navigator

[Abhinav Mishra]

Are there different atmega 16 kits for different frequencies like one for 2 MHz and other for 16 MHz 

If I want to work on gps navigator what will be the components required I have already read the description provide on engineers garage…..

Do i need to have anything else if I have atmega16 kit, STK500, lm16 lcd (2×16)

MOst of the progrrams that I have performed on atmega16 kit have operating frequency of 2 Mhz but i need 16 mhz for the gps navigator…..

Please reply

[Vara Ashishkumar]

Hey Abhinav,

There is no any different IC of atmega16 for 2 MHz and 16 MHz. Atmega16 support different clock rate from1 MHz to 16 MHz. You need to configuration of CKOPT fuse for set 16 MHz. Refer the datasheet of Atmega16 for more information.

No need of any extra componet for GPS navigator. You can coonect the GPS through UART port of Atmega16 and extract information from GPS String and display on LCD.

[Abhinav Mishra]

Ok thanks for replying

[Abhinav Mishra]

i am using cv avr for programming purposes and also i am confused with the interfacing of programmer STK 500 with the kit ……

there are two groups of 6 pins one is male and other female i do not know which is connected and where in atmega16 also after connection i am confused with the burning process used………….previously in my training i used avr studio….but i do not know the steps

Please reply…

[Ashutosh Bhatt]

the AVR programmer has SPI interface. that means it requires 4 pins

MOSI, MISO,  Reset and CLOCK. along with these threre are two more pins Vcc and ground

so you have to connect these respective pins with ATmega pins given on PORTB

[Abhinav Mishra]

Thanks for the help

[Abhinav Mishra]

In GPS GTPA010 we use GGA to get the fix information…..what is this fix information….

Also is it desirable to have 1 at 3D FIX pin of GTPA010 if yes then how do we ensure that……

Thanx in advance 

[divya]

I want to implement I I need source code for please provide it sir
its very urgent
I need to submit on this week

[Abhinav Mishra]

source code is provided on this website go to EG labs>Microcontroller>AVR and then search GPS navigator there u will get the source code  

[Vara Ashishkumar]

Hey Abhinav,

GPS is received number of string which is contain various information. GPGGA is one of the string received by GPS receiver and it is provide valuable information of location for  your application GPS  Navigator. In GPGGA string, you get the information longitude and latitude for navigate location. Altitude provide the information of height above sea level. If you want 3D location you need to be all three infromation longitude, latitude and Altitude.

For Example,

your GPGGA string look like appear..

 $GPGGA,123545,4657.038,N,014391.000,E,1,08,0.9,685.4,M,46.9,M,,*47

where..

GGA          Global Positioning System Fix Data

123545       Fix taken at 12:35:19 UTC

4657.038,N   Latitude 48 deg 07.038' N

014391.000,E  Longitude 11 deg 31.000' E

1            Fix quality: 0 = invalid

1 = GPS fix (SPS)

2 = DGPS fix

3 = PPS fix

4 = Real Time Kinematic

5 = Float RTK

6 = estimated (dead reckoning) (2.3 feature)

7 = Manual input mode

8 = Simulation mode

08           Number of satellites being tracked

0.9          Horizontal dilution of position

 685.4,M      Altitude, Meters, above mean sea level

46.9,M       Height of geoid (mean sea level) above WGS84

ellipsoid

(empty field) time in seconds since last DGPS update

(empty field) DGPS station ID number 

     *47 the checksum data, always begins with *

You need to be extract only  your required data like longitude and latitude.

[Abhinav Mishra]

how do we know that it longitude is 11 deg 31.000 when we get 014391.000 as the information

[Vara Ashishkumar]

Hye Abhinav,

GPGGA string gives the information of longitude and latitude in degree minute format.

I apologize for mistake in this Line: 014391.000,E longitude 11 deg 31.000' E

Correct this as : 01131.000,E longitude 11 deg 31.000' E 

Let's I explain what is the degree format?

Longitude and latitude information is in DDMM.MMMM format.

DD – degree

MM.MMMM – minute

For example, 1131.000 means first two digit is degree and remaining last digit is minute

11 = degree and 31.000' = minute

You can converter in different format from degree minute like only degree format or degree minute second format.

 

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