Help needed with TI C6711 DSK

Started by L. Bawr June 25, 2004
Hi everyone,

I am looking for a trick to output 6 (binary) signals simultaneously from
the C6711 DSK board to feed a RF circuit.
To retrieve these signals from the board I would like to avoid any external
module (daughter card or home made circuits) because we have a limited
budget for a small demo.
I know c6x Dsp's have GPIO registers that might be very useful but I don't
how to make a connection between these registers and any external pins on
the board. Does anyone know a simple workaround?
I'll appreciate any help or suggestion.

LB


You can use three signal lines which are used to control leds (address
0x90080000) , but it's still not enough and there is no external header.
Look at the schematics propably at the same addess You can control three
other output signals.

Sorry for my english.
Grzegorz G.

U&#2013266111;ytkownik "L. Bawr" <lba@step.polymtl.ca> napisa&#2013266099; w
wiadomo&#2013266102;ci
news:cbhobl$d95$1@zcars0v6.ca.nortel.com...
> Hi everyone, > > I am looking for a trick to output 6 (binary) signals simultaneously from > the C6711 DSK board to feed a RF circuit. > To retrieve these signals from the board I would like to avoid any
external
> module (daughter card or home made circuits) because we have a limited > budget for a small demo. > I know c6x Dsp's have GPIO registers that might be very useful but I don't > how to make a connection between these registers and any external pins on > the board. Does anyone know a simple workaround? > I'll appreciate any help or suggestion. > > LB > >
I've just looked at the schematic and I've seen  at address where LED are
three other unused test points , so You can use them with LED pins to
control 6 output signals.

Grzegorz G.


U&#2013266111;ytkownik "L. Bawr" <lba@step.polymtl.ca> napisa&#2013266099; w
wiadomo&#2013266102;ci
news:cbhobl$d95$1@zcars0v6.ca.nortel.com...
> Hi everyone, > > I am looking for a trick to output 6 (binary) signals simultaneously from > the C6711 DSK board to feed a RF circuit. > To retrieve these signals from the board I would like to avoid any
external
> module (daughter card or home made circuits) because we have a limited > budget for a small demo. > I know c6x Dsp's have GPIO registers that might be very useful but I don't > how to make a connection between these registers and any external pins on > the board. Does anyone know a simple workaround? > I'll appreciate any help or suggestion. > > LB > >
L. Bawr wrote:

> Hi everyone, > > I am looking for a trick to output 6 (binary) signals simultaneously from > the C6711 DSK board to feed a RF circuit. > To retrieve these signals from the board I would like to avoid any external > module (daughter card or home made circuits) because we have a limited > budget for a small demo. > I know c6x Dsp's have GPIO registers that might be very useful but I don't > how to make a connection between these registers and any external pins on > the board. Does anyone know a simple workaround? > I'll appreciate any help or suggestion. > > LB > >
You're lucky, my C6711 (starterkit) doesn't have GPIO onboard (only for C&D versions)
I'm not very familiar with the 6711 DSK (I've got a 6713 DSK), but I think
this is how you would do it:

1)  The GPIO module is muxed with the HPI.  You need to configure the board
such that at startup it enables the GPIO rather than the HPI.  Most likely
there is a jumper or a switch on the board that will allow you to do this.
Check the DSK's documentation.
2)  Download the GPIO guide and the 6711 data sheet off the TI web site.
3)  Find the addresses of the GPIO registers in the 6711 data sheet.
4)  Use the GPIO User Guide to program the fields properly (i.e. to
configure the bits as outputs and write to them).
5)  I imagine there is a HPI/GPIO header on the board.  Again look at the
DSK documentation to see which pin corresponds to the GPIO signals.

Brad

"L. Bawr" <lba@step.polymtl.ca> wrote in message
news:cbhobl$d95$1@zcars0v6.ca.nortel.com...
> Hi everyone, > > I am looking for a trick to output 6 (binary) signals simultaneously from > the C6711 DSK board to feed a RF circuit. > To retrieve these signals from the board I would like to avoid any
external
> module (daughter card or home made circuits) because we have a limited > budget for a small demo. > I know c6x Dsp's have GPIO registers that might be very useful but I don't > how to make a connection between these registers and any external pins on > the board. Does anyone know a simple workaround? > I'll appreciate any help or suggestion. > > LB > >
ThanX for your help all. It was very helpful.
LB

"L. Bawr" <lba@step.polymtl.ca> wrote in message
news:cbhobl$d95$1@zcars0v6.ca.nortel.com...
> Hi everyone, > > I am looking for a trick to output 6 (binary) signals simultaneously from > the C6711 DSK board to feed a RF circuit. > To retrieve these signals from the board I would like to avoid any
external
> module (daughter card or home made circuits) because we have a limited > budget for a small demo. > I know c6x Dsp's have GPIO registers that might be very useful but I don't > how to make a connection between these registers and any external pins on > the board. Does anyone know a simple workaround? > I'll appreciate any help or suggestion. > > LB > >
Hi
It would be nice if anybody could give me a link for the C6711 DSK
schematic or if somebody can send it to me asap.

Thanks
Nithin

Grzegorz G. wrote:
> I've just looked at the schematic and I've seen at address where LED
are
> three other unused test points , so You can use them with LED pins to > control 6 output signals. > > Grzegorz G. > > > U=BFytkownik "L. Bawr" <lba@step.polymtl.ca> napisa=B3 w wiadomo=B6ci > news:cbhobl$d95$1@zcars0v6.ca.nortel.com... > > Hi everyone, > > > > I am looking for a trick to output 6 (binary) signals
simultaneously from
> > the C6711 DSK board to feed a RF circuit. > > To retrieve these signals from the board I would like to avoid any > external > > module (daughter card or home made circuits) because we have a
limited
> > budget for a small demo. > > I know c6x Dsp's have GPIO registers that might be very useful but
I don't
> > how to make a connection between these registers and any external
pins on
> > the board. Does anyone know a simple workaround? > > I'll appreciate any help or suggestion. > > > > LB > > > >