USB-to-Serial adapter
Started by ●April 26, 2005
Does anyone know the the models of USB-to-serial adapters that
RabbitSemi recommends? I can't find any information on their web site.
Steve
Reply by ●April 27, 20052005-04-27
At 08:41 PM 4/26/2005 +0000, you wrote:
>Does anyone know the the models of USB-to-serial adapters that
>RabbitSemi recommends? I can't find any information on their web site.
http://www.rabbitsemiconductor.com/products/rs232_usb_cable/index.shtml
--
Mike vanMeeteren fast351@fast... FASTechnologies Corp.
Track Hauler: 2001 F150 Track toy: 89 Mustang LX 351W 10.93 @ 122.5 MPH
>Does anyone know the the models of USB-to-serial adapters that
>RabbitSemi recommends? I can't find any information on their web site.
http://www.rabbitsemiconductor.com/products/rs232_usb_cable/index.shtml
--
Mike vanMeeteren fast351@fast... FASTechnologies Corp.
Track Hauler: 2001 F150 Track toy: 89 Mustang LX 351W 10.93 @ 122.5 MPH
Reply by ●April 27, 20052005-04-27
I didn't realize they sold it. I thought it was just a
recommendation. Do you know what brand it is?
Steve
--- Mike van Meeteren <mike@mike...> wrote:
> At 08:41 PM 4/26/2005 +0000, you wrote:
> >Does anyone know the the models of USB-to-serial
> adapters that
> >RabbitSemi recommends? I can't find any
> information on their web site. http://www.rabbitsemiconductor.com/products/rs232_usb_cable/index.shtml
>
> --
> Mike vanMeeteren fast351@fast...
> FASTechnologies Corp.
> Track Hauler: 2001 F150 Track toy: 89 Mustang LX
> 351W 10.93 @ 122.5 MPH
recommendation. Do you know what brand it is?
Steve
--- Mike van Meeteren <mike@mike...> wrote:
> At 08:41 PM 4/26/2005 +0000, you wrote:
> >Does anyone know the the models of USB-to-serial
> adapters that
> >RabbitSemi recommends? I can't find any
> information on their web site. http://www.rabbitsemiconductor.com/products/rs232_usb_cable/index.shtml
>
> --
> Mike vanMeeteren fast351@fast...
> FASTechnologies Corp.
> Track Hauler: 2001 F150 Track toy: 89 Mustang LX
> 351W 10.93 @ 122.5 MPH
Reply by ●April 27, 20052005-04-27
--- In rabbit-semi@rabb..., Steve Trigero <seecwriter@y...>
wrote:
> I didn't realize they sold it. I thought it was just a
> recommendation. Do you know what brand it is?
>
> Steve
>
http://www.easysync.co.uk/usbrs232_single.html
Model: US232B
Joseph
Reply by ●April 28, 20052005-04-28
It’s a generic no name brand based on the FTDI chip. Plenty of people have had headaches with other brands/models so I’d recommend just getting that one. I think the main problem with other ones is that they poorly control the RS-232 control lines (DTR from memory) used by Dynamic C.
-----Original
Message-----
From: r...@yahoogroups.com
[mailto:r...@yahoogroups.com] On
Behalf Of Steve Trigero
Sent: Thursday,
28 April 2005
1:34
AM
To: r...@yahoogroups.com
Subject: Re: [rabbit-semi]
USB-to-Serial adapter
I didn't realize they sold
it. I thought it was just a
recommendation. Do you know what brand it
is?
Steve
--- Mike van Meeteren <m...@fastec.com>
wrote:
> At 08:41 PM 4/26/2005 +0000, you
wrote:
> >Does anyone know the the models of
USB-to-serial
> adapters that
> >RabbitSemi recommends? I can't
find
any
> information on their web site.
>
>
http://www.rabbitsemiconductor.com/products/rs232_usb_cable/index.shtml
>
> --
> Mike
vanMeeteren
f...@fastec.com
> FASTechnologies Corp.
> Track Hauler: 2001 F150 Track toy: 89
Mustang LX
> 351W 10.93 @ 122.5 MPH
>
>
Reply by ●April 28, 20052005-04-28
At 02:57 PM 4/28/2005 +1000, you wrote:
>It s a generic no name brand based on the FTDI chip. Plenty of people have
>had headaches with other brands/models so I d recommend just getting that
>one. I think the main problem with other ones is that they poorly control
>the RS-232 control lines (DTR from memory) used by Dynamic C.
There are three common chips used for USB->Serial adapters. I don't
remember which ones they are off the top of my head (I'll see if I can find
my notes at work) but only one of them works good.
Here is the one we use (although not for Dynamic C):
http://store.pchcables.com/usbtorsseca.html
I've played with quite a few of them, and some even fail the simple
hyperterm built in serial port to USB adapter test. You type, nothing
shows on the other end. You'd think this would be the minimum
functionality, but what do I know.
For development work, I would really recommend a genuine serial port. Even
good USB adapters are slower because the data is getting translated.
-Mike
--
Mike vanMeeteren fast351@fast... FASTechnologies Corp.
Track Hauler: 2001 F150 Track toy: 89 Mustang LX 351W 10.93 @ 122.5 MPH
>It s a generic no name brand based on the FTDI chip. Plenty of people have
>had headaches with other brands/models so I d recommend just getting that
>one. I think the main problem with other ones is that they poorly control
>the RS-232 control lines (DTR from memory) used by Dynamic C.
There are three common chips used for USB->Serial adapters. I don't
remember which ones they are off the top of my head (I'll see if I can find
my notes at work) but only one of them works good.
Here is the one we use (although not for Dynamic C):
http://store.pchcables.com/usbtorsseca.html
I've played with quite a few of them, and some even fail the simple
hyperterm built in serial port to USB adapter test. You type, nothing
shows on the other end. You'd think this would be the minimum
functionality, but what do I know.
For development work, I would really recommend a genuine serial port. Even
good USB adapters are slower because the data is getting translated.
-Mike
--
Mike vanMeeteren fast351@fast... FASTechnologies Corp.
Track Hauler: 2001 F150 Track toy: 89 Mustang LX 351W 10.93 @ 122.5 MPH
Reply by ●April 28, 20052005-04-28
At 06:55 AM 4/28/2005 -0500, you wrote:
>There are three common chips used for USB->Serial adapters. I don't
>remember which ones they are off the top of my head (I'll see if I can find
>my notes at work) but only one of them works good.
OK when I did testing last fall, this is what I discovered.
(Note: this cable is used for our field update utility, which only uses
TX/RX and GND, no hardware handshaking).
Three chipsets are prevalent:
Prolific PL2303
Cypress HID->COM
FTDI
I only found two of the three chipsets in the units that I tested. One was
the I/O Gear unit which was available at Best Buy at the time. It uses the
Prolific chipset. It worked flawlessly with all the testing we did. We
also ended up finding the Bytec BT-DB925 adapter, which also uses the
Prolific chipset, and was also trouble free.
The other one we used was the PCH cable I mentioned in a previous
e-mail. My recall was incorrect, this is not the cable we use. It uses
the Cypress HID->COM driver and it never worked right. Once in a while
you'd get data to come across it, but it was flaky and very slow. I don't
recommend this cable.
The FTDI chipset I have no experience with, but since Rabbit recommends it,
I would guess it works correctly.
The one we order now for our field update kit comes from Ateck. The nice
thing is it's ultra cheap, and has a 6ft cable attached, which makes it
convenient because you don't need a DB9-DB9 serial cable to reach the
device (like you do with the I/O Gear unit which is 6" long).
I have run Dynamic C using this adapter. I just ended up having to disable
the CPU ID verify, and everything worked fine.
-Mike
http://www.ateck.com/viewItem.asp?idProductE3057041
>There are three common chips used for USB->Serial adapters. I don't
>remember which ones they are off the top of my head (I'll see if I can find
>my notes at work) but only one of them works good.
OK when I did testing last fall, this is what I discovered.
(Note: this cable is used for our field update utility, which only uses
TX/RX and GND, no hardware handshaking).
Three chipsets are prevalent:
Prolific PL2303
Cypress HID->COM
FTDI
I only found two of the three chipsets in the units that I tested. One was
the I/O Gear unit which was available at Best Buy at the time. It uses the
Prolific chipset. It worked flawlessly with all the testing we did. We
also ended up finding the Bytec BT-DB925 adapter, which also uses the
Prolific chipset, and was also trouble free.
The other one we used was the PCH cable I mentioned in a previous
e-mail. My recall was incorrect, this is not the cable we use. It uses
the Cypress HID->COM driver and it never worked right. Once in a while
you'd get data to come across it, but it was flaky and very slow. I don't
recommend this cable.
The FTDI chipset I have no experience with, but since Rabbit recommends it,
I would guess it works correctly.
The one we order now for our field update kit comes from Ateck. The nice
thing is it's ultra cheap, and has a 6ft cable attached, which makes it
convenient because you don't need a DB9-DB9 serial cable to reach the
device (like you do with the I/O Gear unit which is 6" long).
I have run Dynamic C using this adapter. I just ended up having to disable
the CPU ID verify, and everything worked fine.
-Mike
http://www.ateck.com/viewItem.asp?idProductE3057041
Reply by ●April 28, 20052005-04-28
The one that Rabbit sells is an Easysync US232B and works completely transparently, it uses the FTDI chipset and has a 1 meter cable attached to it.
I went through the same grief a while ago when I needed to use my laptop to do some development and none of the 5 or 6 USB to Serial converters we had in-house worked, I gave in and just ordered the one Rabbit offered and it worked without any problems.
Bob
From:
r...@yahoogroups.com [mailto:r...@yahoogroups.com]
On Behalf Of Mike van Meeteren
Sent: Thursday, April 28, 2005
9:56 AM
To:
r...@yahoogroups.com
Subject: RE: [rabbit-semi]
USB-to-Serial adapter
At 06:55 AM 4/28/2005 -0500, you wrote:
>There are three common chips used for
USB->Serial adapters. I don't
>remember which ones they are off the top of my
head (I'll see if I can find
>my notes at work) but only one of them works
good.
OK when I did testing last fall, this is what I
discovered.
(Note: this cable is used for our field update
utility, which only uses
TX/RX and GND, no hardware
handshaking).
Three chipsets are prevalent:
Prolific PL2303
Cypress HID->COM
FTDI
I only found two of the three chipsets in the
units that I tested. One was
the I/O Gear unit which was available at Best Buy
at the time. It uses the
Prolific chipset. It worked flawlessly with
all the testing we did. We
also ended up finding the Bytec BT-DB925 adapter,
which also uses the
Prolific chipset, and was also trouble
free.
The other one we used was the PCH cable I
mentioned in a previous
e-mail. My recall was incorrect, this is not
the cable we use. It uses
the Cypress
HID->COM driver and it never worked right. Once in a while
you'd get data to come across it, but it was
flaky
and very slow. I don't
recommend this cable.
The FTDI chipset I have no experience with, but
since Rabbit recommends it,
I would guess it works correctly.
The one we order now for our field update kit
comes from Ateck. The nice
thing is it's ultra cheap, and has a 6ft cable
attached, which makes it
convenient because you don't need a DB9-DB9
serial
cable to reach the
device (like you do with the I/O Gear unit which
is 6" long).
I have run Dynamic C using this adapter. I
just ended up having to disable
the CPU ID verify, and everything worked
fine.
-Mike
http://www.ateck.com/viewItem.asp?idProductE3057041
