SparkFun Forums

[mo]

Hello.

I find the NMEA 'RT' command in any permutation I try puts the unit permanently to sleep and only a power reset will end. Serial port activity will not wake.

E.G., $PTNLSRT,S,3,111,30 should sleep for 30 seconds, and wake?

Does anyone have wisdom for me?

Thanks, mo.

[mo]

Well, some people should not be allowed near keyboards, I guess that's me....

For those who may come along and need to know, properly it should have looked like this:

$PTNLSRT,S,0,7,30

*Checksum not required.
*The second term can be set to '0' as not necessary to load to FLASH if power is not removed.
*And Wake Mode is the DECIMAL EQUIVALENT of what the manual calls for.

Now, if I can just sort out the syntax for the equivalent TSIP command that would be great.

mo

[mo]

the TSIP issues.

So the next guy doesn't have to go through this, there are errors in the manual also for the TSIP 'Standby' Command Packet 0xC0.

BYTE<0> manual calls for char 'F' to Standby. No. It is actually char 'S', H'53'.

BYTE<2> is a mess in the manual. decimal int's should be entered.
WAKE on PORT 1 is b'001' d'1'
WAKE on PORT 2 is b'010' d'2'
WAKE on TIMEOUT is b'100' d'4'

BYTE<3> is a 32 bit UINT
TIME is entered as a straight unsigned integer, unlike what the manual discussion says [IEEE754].

The manual also demands 'DLE' byte stuffing. This doesn't work.

Example for a 30 sec Standby is simply:

<10 C0 53 00 04 00 00 00 1E 10 03> and no checksum necessary.

Thanks Trimble.

[mo]

Guess i'd better qualify..

This all with firmware V1.05, Build #4, 5/23/06

Mileage may vary, LSMFT, etc.

Enjoyed talking to myself. Thanks.

[forthguru]

You weren't talking to yourself, many of us were listening, and perhaps the mental support we gave helped you pull it off - who knows!
Anyway, well done.
Ray

[mo]

Thanks Forth.

The Copernicus is a really nice little device, I think.

I am finding that the specs on the unit are modest also. For instance, the book says the 1PPS is +/-50ns. I am finding that closer to 20ns. Nice.

mo