[dba-Tech] OT: Is anyone into controllers?

oh, thats great. Thanks a lot.
now I only need to find out how to talk to the serial,
but I think there must be some dll or such around somewhere.

Lembit

----- Original Message ----- 
From: "Stuart McLachlan" <stuart at lexacorp.com.pg>
To: "Discussion of Hardware and Software issues" 
<dba-tech at databaseadvisors.com>
Sent: Tuesday, September 26, 2006 10:48 PM
Subject: Re: [dba-Tech] OT: Is anyone into controllers?


> On 26 Sep 2006 at 15:41, Lembit Soobik wrote:
>
>> thank you , Stuart,
>> the microprocessor side is not that difficult.
>> The problem is, how to write/read the USB port from the PC side without
>> needing to develop a driver or such.
>
> You don't need to. The cables generally come with drivers which make them
> look like standard serial connections.
>
> As an example, I run CMap on my laptop on a boat with a Garmin 76 GPS.
>
> Th GPS  has a standard serial interface, my laptop doesn't have an serial
> port and the CMap software doesn't know anything about USB ports, it only
> knows how to interface to a Com1: to Com4:.
>
> When I plug my GPS to my laptop usin the adapter cable, the GPS thinks it
> is talking over a standard RS323 interface and CMap thinks that it is
> reading/writing on Com2:  (my laptop thinks that the built in modem is
> sitting on Com1:)
>
>
> -- 
> Stuart
>
>
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