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'[PIC]: Has any had any luck with a usb to rs232 co'
2001\03\06@105055 by e.bockhoefer

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I recently purchased a usb to rs-232 converter in order to interface to my
MPLAD-ICD test kit. My laptop has no rs-232 port, only usb. Unfortunately, I
can't get the converter to work, nor can I get any information on the
converter because the company went out of business. I think the MPLAB
interface is hard coded for an interrupt that is not on the converter, or
something to do with the virtual driver for the converter. Can you recommend
a USB to rs-232 converter that is known to work with the MPLAB kit?

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2001\03\06@110305 by severson

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I'm not sure, but I think that MPLAB may do more than write to the "port" in
a generic way. It either bypasses drivers and writes to hardware (does it
toggle some odd lines, perhaps?), or writes serial data in a way that the OS
can not redirect to a USB/serial converter.

I'd do what I can to solve this problem, but I'd need the help of this list.
It might be "unsolvable" if MPLAB is uncooperative.

Anyone have any insight?

-Robert Severson
http://www.usbmicro.com
http://usbsimm.home.att.net
http://www.jged.com
http://www.annatechnology.com


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2001\03\06@130423 by mike

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On Tue, 6 Mar 2001 10:03:58 -0600, you wrote:

Yes - I played around with an entrega unit - I can't remember if I
tried it on MPLAB-ICD or Picstart Plus. The only problem was that MPLAB didn't see the new (usb) COM port
number (COM3), so you couldn't select it - it was greyed-out onscreen.
However by editing the port number directly in MPLAB.INI it worked
fine.
If you have no luck with this and really need to use it on a laptop
with no serial port, a PCMCIA serial adapter will almost certainly
work as it is a 'real' uart chip mapped into the PC's address space.
RS232-PCMCIA adapters are significantly more expensive and harder to
find though.  
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2001\03\09@143721 by Rick Mann

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on 3/6/01 7:47 AM, Ed Bockhoefer at e.bockhoeferspamspam_OUTpatamerica.com wrote:

> I recently purchased a usb to rs-232 converter in order to interface to my
> MPLAD-ICD test kit. My laptop has no rs-232 port, only usb. Unfortunately, I
> can't get the converter to work, nor can I get any information on the
> converter because the company went out of business. I think the MPLAB
> interface is hard coded for an interrupt that is not on the converter, or
> something to do with the virtual driver for the converter. Can you recommend
> a USB to rs-232 converter that is known to work with the MPLAB kit?

I can't speak to the MPLAB-ICD, but using the WARP-13a from Newfound
Electronics (http://www.new-elect./com) I'm able to use MPLAB to connect
using a uConnect-brand USB-to-serial adapter.

And all this from within VirtualPC on an Apple PowerBook!

------------------------------------------------------------
Roderick Mann                 @spam@rmannKILLspamspamlatencyzero.com.sansspam

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2001\03\09@154615 by Dan Michaels

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At 11:37 AM 3/9/01 -0800, you wrote:
>on 3/6/01 7:47 AM, Ed Bockhoefer at KILLspame.bockhoeferKILLspamspampatamerica.com wrote:
>
>> I recently purchased a usb to rs-232 converter in order to interface to my
>> MPLAD-ICD test kit. My laptop has no rs-232 port, only usb. Unfortunately, I
>> can't get the converter to work, nor can I get any information on the
>> converter because the company went out of business. I think the MPLAB
>> interface is hard coded for an interrupt that is not on the converter, or
>> something to do with the virtual driver for the converter. Can you recommend
>> a USB to rs-232 converter that is known to work with the MPLAB kit?
>

general google search:

http://www.google.com/search?q=RS232+USB+converter

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