[TI-H] Re: Connecting a gps tracking mouse to the Ti-89
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[TI-H] Re: Connecting a gps tracking mouse to the Ti-89
Ofcourse the connection speed has to be constant, first of all, a processor
needs a set frequency, this is usually done using either an internal
oscillator, or external crystal or RC circuit. Also, the speed you send at
automatticly becomes the speed the TI receives at. (There is ofcourse a
certain limit, 9600 Baud or something). Read the information about the
protocols on ti-calc.org.
>From: Olle Hedman <alh@home.se>
>Reply-To: ti-hardware@lists.ticalc.org
>To: ti-hardware@lists.ticalc.org
>Subject: [TI-H] Re: Connecting a gps tracking mouse to the Ti-89
>Date: Thu, 30 Jan 2003 21:14:04 +0100
>
>Mark Blome wrote:
>
>>Hi everybody!
>> some days ago I read an article about the way one can connect a simple
>>gps-receiver to a pda via the serial port. I thought: this should be
>>possible with the Ti-89 as well!
>>As I am a novice either in Ti89 hardware as well as in its assembly
>>programing, I am not sure if Ti-89s hardware in generell is cabable of
>>receiving gps-data via its link cable! For example: the gps serial port
>>will send the data with 4800 bits per sec. Is there a way to tell the
>>Ti-89 to receive data with a specific transfer rate? Is there a kind of a
>>time counter in the calculator (eg for speed calculations etc.)?
>> Thanks for any help!
>> Mark
>
>Unfortunatly there is no way of getting true real time on most calcs.
>They all drift in speed depending on battry and temperature.
>I think some calcs like the 83+ (maybe silver edition is needed) and v200
>has some kind of realtime circuit in it.
>I don't know how usable it is though.
>
>--Olle
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