TruePosition GPS Receiver firmware
I cleaned up the chip without removing any of the markings. It looks like it is a Spansion S29JL032H90TFI21. Hopefully somebody has a reader that can handle it.
Looking at the documentation for the LMU unit that these came out of didn't reveal anything new. There is no mention of an antenna elevation mask or signal level mask setting... it's hard to imagine as GPSDO with those (particularly the elevation mask).
Anyway, Heather is now doing a pretty good job of working with it. It would be nice to be able to squeeze some more features out of them...
Oh, and the seller jacked up the price by $10. I think you can get the complete LMU (shipped) for close to that from one of the sellers.
The two digits before the ? are very important. They describe the memory
format. You may want to put it under your microscope.
On 5/8/2017 4:45 PM, Mark Sims wrote:
Anyway, Heather is now doing a pretty good job of working with it.
Oh, and the seller jacked up the price by $10.
Received one bare board and one LMU today. The bare board is up and
running as I type, happily doing a survey. About 200 ma draw at 14.5
VDC. She was reporting a position somewhere in New Jersey when I first
powered it up.
I'll bet the seller saw a sudden increase in demand and decided to raise
the price. Yes - the whole LMU is now cheaper by a few bucks including
shipping, at least to my house here.
I don't have it on Lady Heather yet but plan to do that soon. Is the
version hosted here http://www.ke5fx.com/heather/readme.htm have the
TruePosition code in it?
thanks much,
ben
Hi Mark:
My TL866A programmer will read it, or it says it will. Unfortunately I don't have the TS0P48 adapter. You are welcome to borrow it, perhaps a adapter can be made up. They are commonly available on Ebay.
[cid:bdd0f56e-77c5-4d42-b15d-8a567ae837e1]
-=Bryan=-
From: time-nuts time-nuts-bounces@febo.com on behalf of Mark Sims holrum@hotmail.com
Sent: May 8, 2017 2:45 PM
To: time-nuts@febo.com
Subject: [time-nuts] TruePosition GPS Receiver firmware
I cleaned up the chip without removing any of the markings. It looks like it is a Spansion S29JL032H90TFI21. Hopefully somebody has a reader that can handle it.
Looking at the documentation for the LMU unit that these came out of didn't reveal anything new. There is no mention of an antenna elevation mask or signal level mask setting... it's hard to imagine as GPSDO with those (particularly the elevation mask).
Anyway, Heather is now doing a pretty good job of working with it. It would be nice to be able to squeeze some more features out of them...
Oh, and the seller jacked up the price by $10. I think you can get the complete LMU (shipped) for close to that from one of the sellers.
The two digits before the ? are very important. They describe the memory
format. You may want to put it under your microscope.
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Mark,
I did not find a datasheet specific for your number but I did find a data sheet for the S29JL032H90TFI210, if that might be what you have. If so, I probably have a programmer and socket adapter that can read and program it. I'll see if I can find it this week.
Happy to help if I can.
Joe
-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Mark Sims
Sent: Monday, May 08, 2017 4:46 PM
To: time-nuts@febo.com
Subject: [time-nuts] TruePosition GPS Receiver firmware
I cleaned up the chip without removing any of the markings. It looks like it is a Spansion S29JL032H90TFI21. Hopefully somebody has a reader that can handle it.
Looking at the documentation for the LMU unit that these came out of didn't reveal anything new. There is no mention of an antenna elevation mask or signal level mask setting... it's hard to imagine as GPSDO with those (particularly the elevation mask).
Anyway, Heather is now doing a pretty good job of working with it. It would be nice to be able to squeeze some more features out of them...
Oh, and the seller jacked up the price by $10. I think you can get the complete LMU (shipped) for close to that from one of the sellers.
The two digits before the ? are very important. They describe the
memory
format. You may want to put it under your microscope.
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and follow the instructions there.
Has anyone figured out what the two small push buttons do?
----- Original Message -----
From: "Ben Hall" kd5byb@gmail.com
To: time-nuts@febo.com
Sent: Monday, May 08, 2017 7:30 PM
Subject: Re: [time-nuts] TruePosition GPS Receiver firmware
On 5/8/2017 4:45 PM, Mark Sims wrote:
Anyway, Heather is now doing a pretty good job of working with it. Oh,
and the seller jacked up the price by $10.
Received one bare board and one LMU today. The bare board is up and
running as I type, happily doing a survey. About 200 ma draw at 14.5 VDC.
She was reporting a position somewhere in New Jersey when I first powered
it up.
I'll bet the seller saw a sudden increase in demand and decided to raise
the price. Yes - the whole LMU is now cheaper by a few bucks including
shipping, at least to my house here.
I don't have it on Lady Heather yet but plan to do that soon. Is the
version hosted here http://www.ke5fx.com/heather/readme.htm have the
TruePosition code in it?
thanks much,
ben
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https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
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