How to acess the flags in the data packet structures.

[bvernham]

Subject of the issue

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You have a union of a struct and a variable inside another structure. This is beyond my knowledge of C.

For example: myGNSS.packetUBXHNRPVT->data.flags.gpsFixOK How do I access gpsFixOK? I have tried 10 different ways....
Thanks

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[PaulZC]

Hi Bruce (@bvernham ),

You can access the individual bits of flags like this:
myGNSS.packetUBXHNRPVT->data.flags.bits.gpsFixOK

If you want to read the whole of flags, as a uint8_t, use:
myGNSS.packetUBXHNRPVT->data.flags.all

Best wishes,
Paul

[bvernham]

Yah, after staring at it for hours I figured it out.

Thanks

The union threw me but now I get it.

Also is there a particular reason why I don't want to use the call back?

I know that you have to use for example myGNSS.setAutoESFALGcallback to set up the call back but why don't I want to use it for the ESF?

The only reason why I would use ESF is prior to entering fusion mode but I think it is more efficient to use the call back and turn off the auto (which is why I asked the question when dead reckoning is entered.

Please let me know your thoughts.

Thanks

Bruce

Thanks