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Re: [Xylo-SDR] Lionheart Block diagram v1.2
No - its just internal to the FPGA. No reason why we couldn't add this into
the USB protocol but it we want it to look like a USB virtual com port then
someone will need to write a Windows driver.
So... Should I add an RS232 converter to the Lionheart block diagram?
Quoting Bill Tracey <email@example.com>:
> Phil -- does the debug comm port you've got on the FPGA present as a comm
> port other apps can talk to, or is it only accessible from the XyloFPGA
> If only via XyloFPGA think we will need a custom device driver to take data
> from the USB interface and present it as a comm port so other applications
> can talk to it. like it were a standard comm port
> Not saying it can't be done, just saying not to forget some software will
> be needed as well.
> Bill (kd5tfd)
> At 07:41 PM 1/26/2006, firstname.lastname@example.org wrote:
> >Hi Helmut,
> >Adding serial ports to the FPGA is very easy, I already have one on my
> >Xylo to
> >help with debugging.
> >Based on current feedback I will make the following changes to the V1.2
> >Lionheart block diagram
> >1. 1.2v regulator to run off the 5v rail.
> >2. Use I2C for controlling the LPF's and BPF's. Last night I tested an
> >MCP23016 16 bit I/O expander on my Xylo and it works just fine.
> >3. I think that I understand how the JTAG boundary scan works now so I will
> >change the diagram to show the connector going into the FPGA and from the
> >out over the bus.
> >In regards to the question below, what version of the FX2 are we planning
> >how many pins?
> >Quoting vk4str <email@example.com>:
> > > Hi All,
> > >
> > > > Just posted V1.2 of Lionheart to www.hamsdr.com . Lets get the
> > > > started so Leon can work his magic on the PCB.
> > >
> > > Is it possible to get at least one serial port (emulated COM port over
> > > USB) onto Atlas the motherboard? There are a number of peripherals that
> > > need to be hooked up to the system, GPS engine, TNC's, just to name a
> > > few. Can the FPGA handle that, Leon? There are a lot of applications
> > > that need to see a COM port to work, so the FPGA needs to emulate that
> > > transparently.
> > >
> > > The 128 pin FX2 has two serial ports, that would be easy. One could also
> > > run one 8 bit bus (or more) off the FX2 onto the Atlas, would be handy
> > > to have a small data buss bypassing the FPGA.
> > >
> > > Eric, the newer V2.0 ATX PSU's come with a 24 pin Molex connector. But
> > > you can plug the 20 pin Molex from older pre V2.0 ATX PSU's into that as
> > > well.
> > >
> > > Helmut
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