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

thanks, John

Lembit

----- Original Message ----- 
From: "JWColby" <jwcolby at colbyconsulting.com>
To: "'Discussion of Hardware and Software issues'" 
<dba-tech at databaseadvisors.com>
Sent: Wednesday, September 27, 2006 1:40 PM
Subject: Re: [dba-Tech] OT: Is anyone into controllers?


> When I was doing a program at the screw company, I used the serial object
> that comes with VB (not vba).  I think it was an OCX IIRC.  I placed it on 
> a
> form and hooked the events up.  I could then program the uart (start, stop
> parity, baud) and then read/write the buffers.  The only issue is that the
> object is part of VB and you have to have some kind of license installed 
> on
> the machine.  It was a while ago and I don't remember the details.  I do
> know I wrapped it in a class however.
>
> John W. Colby
> Colby Consulting
> www.ColbyConsulting.com
>
> -----Original Message-----
> From: dba-tech-bounces at databaseadvisors.com
> [mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Lembit Soobik
> Sent: Wednesday, September 27, 2006 4:30 AM
> To: Discussion of Hardware and Software issues
> Subject: Re: [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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