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11 years, 5 months ago.
zeros
when i turn on the Gps the reading in the screen is zeros what the problem could be
Question relating to:
2 Answers
11 years, 5 months ago.
One of the cause of the zero GPS signal problems is an interference noise from the Ethernet PHY on the LPC1768 mbed.
Please try to PowerDown the PHY.
http://mbed.org/forum/mbed/topic/3860/?page=1#comment-20871
http://mbed.org/users/yamaguch/code/GPSReceiver-EthernetDisabled/
11 years, 5 months ago.
Some more information would be useful. I assume you have a GlobalSat EM406 GPS connected to mbed as described on the linked page??
One problem could be that the GPS has no satellite signal. Are you indoors? Even with a good signal the GPS will need time to find the satellites, download the almanac etc before it can do a position fix and provide a lat/lon. That process can be slow when you boot the GPS for the first time or when it has not been used for awhile.