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Discussion Groups | Rabbit-Semi | RFU on Win7

This is a group for folks designing and programming embedded systems using the Rabbit Semiconductor C-programmable microcontroller. This group is not affiliated with either Rabbit or Z-World, but is a user forum for sharing ideas, asking questions, flaunting knowledge, and other typical user group stuff. The Rabbit is a powerful uC, supported by a full-featured C-compiler.

RFU on Win7 - seecwriter - Feb 29 13:47:29 2012

I'm changing PCs, from WinXP to Win7 64-bit. The RFU for DC 9.25 works
but the RFU from DC 10.66 does not. I have it configured the same as
it was on my WinXP.

I'm using a serial port, not a USB port, for communication. I have the
"Use USB to serial converter" unchecked.

I can communicate with the unit via the serial port, so I know the port
works.

Does this sound like a driver issue?



Re: RFU on Win7 - mario_wtbbh - Feb 29 16:27:33 2012

Just a couple of points on DC10.x.

- You should use 10.70. There were a couple of fixes, especially for the RCM6700 series.

- Re DC10 RFU, I've only used a USB (On Win 7, 64-bit) and have had no problems. However, we have the same FTDI chip on board that many serial/USB converters use, so we are no different to an external USB converter.

Latest FTDI version is 18/March/2011, V2.8.14.0

--- In r..., "seecwriter" wrote:
>
> I'm changing PCs, from WinXP to Win7 64-bit. The RFU for DC 9.25 works
> but the RFU from DC 10.66 does not. I have it configured the same as
> it was on my WinXP.
>
> I'm using a serial port, not a USB port, for communication. I have the
> "Use USB to serial converter" unchecked.
>
> I can communicate with the unit via the serial port, so I know the port
> works.
>
> Does this sound like a driver issue?
>


_____________________________
 Free pdf download: What Every Programmer Should Know About Memory.


Re: RFU on Win7 - seecwriter - Feb 29 17:21:12 2012

We don't use USB on our products. Just straight RS-232.

During the installation of DC I recall seeing a message that said
the USB drivers would be installed when a programming cable is
connected. Since it only mentioned USB drivers I paid little
attention. Why would I need a USB driver if I'm not using USB? But
maybe there is a connection. If so, what cable would I connect, and
what would I connect it to?

Steve

--- In r..., "mario_wtbbh" wrote:
>
> Just a couple of points on DC10.x.
>
> - You should use 10.70. There were a couple of fixes, especially for the RCM6700 series.
>
> - Re DC10 RFU, I've only used a USB (On Win 7, 64-bit) and have had no problems. However, we have the same FTDI chip on board that many serial/USB converters use, so we are no different to an external USB converter.
>
> Latest FTDI version is 18/March/2011, V2.8.14.0
>
> --- In r..., "seecwriter" wrote:
> >
> > I'm changing PCs, from WinXP to Win7 64-bit. The RFU for DC 9.25 works
> > but the RFU from DC 10.66 does not. I have it configured the same as
> > it was on my WinXP.
> >
> > I'm using a serial port, not a USB port, for communication. I have the
> > "Use USB to serial converter" unchecked.
> >
> > I can communicate with the unit via the serial port, so I know the port
> > works.
> >
> > Does this sound like a driver issue?
>



Re: RFU on Win7 - Scott Henion - Feb 29 17:29:18 2012

On 2/29/2012 5:20 PM, seecwriter wrote:
> We don't use USB on our products. Just straight RS-232.
>
> During the installation of DC I recall seeing a message that said
> the USB drivers would be installed when a programming cable is
> connected. Since it only mentioned USB drivers I paid little
> attention. Why would I need a USB driver if I'm not using USB? But
> maybe there is a connection. If so, what cable would I connect, and
> what would I connect it to?
>

If you have a regular cable, then it in itself should not need USB drivers.

However, many PC's and laptops have serial ports that sit on the USB
bus. My dell Inspiron is that way.

Check the advanced properties on the serial port in the device manager.
Under advanced, there might be a latency option. Setting it to 1
(default is 16) really helps speed and stability.

Try the USB option even though you might have a direct port. It looks
like it relaxes the timings.

--
------
Scott G. Henion, Consultant
Web site: http://SHDesigns.org
------



Re: RFU on Win7 - mario_wtbbh - Feb 29 17:43:01 2012

Sorry, I just got your point: I.e. You are using a genuine RS232 port on the PC motherboard, not a USB/serial converter.

The problem is that even "genuine" com ports are emulated in micro-code and don't use real UARTs anymore.

RFU (and DC) need to "bit-bash" the port, taking control of the DTR line.

In your case, drivers won't help. You need to check your BIOS settings and check for port "simplification" options - disable FIFOs,etc.

One long shot: have you tried to run RFU in XP compatibility mode?

Alternatively, you could buy a USB/serial converter that has an FTDI chip. (There is a Rabbit/Digi part number for one brand)
--- In r..., "seecwriter" wrote:
>
> We don't use USB on our products. Just straight RS-232.
>
> During the installation of DC I recall seeing a message that said
> the USB drivers would be installed when a programming cable is
> connected. Since it only mentioned USB drivers I paid little
> attention. Why would I need a USB driver if I'm not using USB? But
> maybe there is a connection. If so, what cable would I connect, and
> what would I connect it to?
>
> Steve
>
> --- In r..., "mario_wtbbh" wrote:
> >
> > Just a couple of points on DC10.x.
> >
> > - You should use 10.70. There were a couple of fixes, especially for the RCM6700 series.
> >
> > - Re DC10 RFU, I've only used a USB (On Win 7, 64-bit) and have had no problems. However, we have the same FTDI chip on board that many serial/USB converters use, so we are no different to an external USB converter.
> >
> > Latest FTDI version is 18/March/2011, V2.8.14.0
> >
> >
> >
> > --- In r..., "seecwriter" wrote:
> > >
> > > I'm changing PCs, from WinXP to Win7 64-bit. The RFU for DC 9.25 works
> > > but the RFU from DC 10.66 does not. I have it configured the same as
> > > it was on my WinXP.
> > >
> > > I'm using a serial port, not a USB port, for communication. I have the
> > > "Use USB to serial converter" unchecked.
> > >
> > > I can communicate with the unit via the serial port, so I know the port
> > > works.
> > >
> > > Does this sound like a driver issue?
> > >
>