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Forum Index : Microcontroller and PC projects : Loops

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vk4tec

Senior Member

Joined: 24/03/2012
Location: Australia
Posts: 239

Posted: 06:10pm 10 Jul 2013

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Hello

When I am dealing with GPS sometimes the data can not be there. Missing serial.

In that the GPS has gone away. - Failure mode

Can you only run one settick loop ?

I would like to have an independant loop that changes an LED based on the GPS stream is active or not.

Comments ?

As opposed to an LED on / off in the "wait for GPS data" loop.

- Andrew-

Andrew Rich VK4TEC
www.tech-software.net

cwilt
Senior Member

Joined: 20/03/2012
Location: United States
Posts: 147

Posted: 06:41pm 10 Jul 2013

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You could base it off of the validation field in GPRMC sentence. Its the 2nd data field in the sentence. Use a global variable that resets to 0 when anything but an A is there. Have your settick loop check that variable.

That validation field is in other nema sentences too.

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