Finally, I got to do the promised evaluation of the answers. See below.
Number of participants: 34
> * What OS do you run geda applications on?
Fedora Core: 16 (1x FC-4, 1x FC-5, 2x FC-6, 3x FC-7, 4x FC-8, 3x FC-9)
Mac OSX: 8
Debian: 8 (3x etch, 3x lenny, 1x
>The code was designed for a CPLD, so perhaps there is a difference. In
>ISE, with the FPGA I'm putting down buffer symbols which tell it what
>kind of IO to use. If you could directly map the "INOUT" port to a pin
>on the chip (where "0" or "Z" output states would make sense), that
>works intuitiv
On Thu, 2008-06-26 at 15:22 -0700, Ben Jackson wrote:
> On Thu, Jun 26, 2008 at 11:07:49PM +0100, Peter Clifton wrote:
> >
> > This is similar to the code in the Xilinx I2C entity.
> >
> > When I try to assign from the input port of the IOBUF using similar
> > code, I just end up getting this err
On Thu, Jun 26, 2008 at 02:56:22PM -0700, Ben Jackson wrote:
> On Thu, Jun 26, 2008 at 07:47:57PM +0100, Peter Clifton wrote:
> In the case of I2C where you only want inputs and pulldowns, 'O' is always
> 0 (zero) and T should be true when you want to pull down. My own i2c
> module has inputs sda,
On Thu, Jun 26, 2008 at 11:07:49PM +0100, Peter Clifton wrote:
>
> This is similar to the code in the Xilinx I2C entity.
>
> When I try to assign from the input port of the IOBUF using similar
> code, I just end up getting this error.
>
> http://www.xilinx.com/support/answers/14264.htm
Right, F
On Thu, 2008-06-26 at 14:56 -0700, Ben Jackson wrote:
> On Thu, Jun 26, 2008 at 07:47:57PM +0100, Peter Clifton wrote:
> >
> > -- I2C bus signals
> > sda : inout std_logic;
> > scl : inout std_logic;
> >
> > So.. my total NOOB question.. when I make a symbol for that, and
> > instantiate it
On Thu, Jun 26, 2008 at 07:47:57PM +0100, Peter Clifton wrote:
>
> -- I2C bus signals
> sda : inout std_logic;
> scl : inout std_logic;
>
> So.. my total NOOB question.. when I make a symbol for that, and
> instantiate it in my schematic, exactly how to I hook up those signals
> to a bi-dir
Hi,
I'm trying to implement an I2C controller for my project, and have
started from the Xilinx application note XAPP333.
ftp://ftp.xilinx.com/pub/applications/refdes/xapp333.zip
(Need to register to download I think).
The I2C controller section is an VHDL entity, and the SDA / SCL lines
are def
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2)
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