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gps receiver based query — Parallax Forums

gps receiver based query

janujanu Posts: 11
edited 2013-03-01 05:39 in Robotics
Hi.,
Am doing GPS receiver based project. i could integrate the GPS with EVK board. Buti can't receive any characters from GPS. GPS and EVK interface with UART communication. i set a baud rate 4800bps , No parity bit, 0 START BIT, 1 STOB BIT,NORMAL channel mode. So i could not Predict my problem.My GPS receiver is NMEA protocol supported.
Please any solution to complete my project as soon.









Best Regards.,
Manochitra.K

Comments

  • Christof Eb.Christof Eb. Posts: 1,158
    edited 2013-03-01 02:21
    Hi, janu,
    do you think, that you yourself could help anyone, with so little informations?
    Good luck, Christof
  • blittledblittled Posts: 681
    edited 2013-03-01 05:39
    Since you did not mention what GPS module you are using it is hard to say what the problem is but check your GPS module specifications since I can think of these issues

    1. You should use the TTL Serial lines. Using the RS232 Serial lines to a microcontroller will not work.
    2. Check the default baud rate for your module. Many are 9600. If yours is 9600 you should receive only garbage back from your GPS module when the microcontroller is set to receive 4800 baud
    3. TX and RX are reversed
    4. You are supplying the wrong voltage to the GPS module
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