Fwd: Re: [SWLUG] Responses

[andrew sprott]

>> >I've built leads in the past to allow me to connect stuff to my psion 5
>> >using the provided serial cable. As Justin says, the cable Psion
>> >provide is gendered and pinned out to talk to a PC's serial port (a la
>> >null modem)
>
>Err, that is what is confusing me. If it is a null-modem cable, and if the
>Garmin cable is null modem surely the pinouts won't be correct. But
>if both cables are straight through then connecting them with a null
>modem cable would work.
>
>> > and so you will need to buy or build a crossover & gender
>> >changer module. It's simple enough to build one with a couple of quid
>> >worth of maplin bits (2 x male Ds and some wire & solder) and some info
>
>K, got all that.
>
>> >That should allow your 5mx to physically talk to the Garmin - whether
>> >you can make it do anything useful with the information is another
>> >matter - if the protocol is even documented.
>
>I've got that working based on a document published by Garmin in 1999.
>Problem is the newer protocols are not documented and Garmin have
>assured me that they have no intention of publishing these specs. But
>at least the system they use allows my software to know - or not know
>- what data structures and protocols a GPS handset uses.
>
>The thing is carrying a laptop and a GPS around a field taking
>readings is not a ideal setup. But, seeing as Delphi compiles for Kylix,
>and if Kylix works with PsiWin, I thought i could use my 5mx with my
>GPS-Mapper software.
>
>Andrew