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tmsc6711 mcbsp to uart

Started by txikuto September 29, 2005
Hello, I'm a spanish student and I'm doing my final project of
engineering. I need to connect using an rs232 cable a dsp TI
TMSc6711 to a PC, which I'll use to control some parameters of the
dsp program by a Visual Basic 6.0 program. I have the application
note from TI (mcbsp to uart), and the schematics of the level
converter (TTL to Rs232), but I don't know how to conect these level
converter to the dsp. Where are the Tx and Dx pins (Edma pins 14 and
15) on the dsp? In any connector, I supose... And the power pins...
In fact I don't know how to connect any pin! If somebody can tell me
somthing, it would be fantastic.

And if somebody knows how can I connect 2 PC by rs232 (one sending
data in VB and one monitoring by hyperterminal) for trying my Visual
Basic program, please tell me too.

Thank you very much

See you

Pau Segui.


Hello Pau,

Please see my comments below.

mikedunn

--- txikuto <txikuto@txik...> wrote:

> Hello, I'm a spanish student and I'm doing my final
> project of
> engineering. I need to connect using an rs232 cable
> a dsp TI
> TMSc6711 to a PC, which I'll use to control some
> parameters of the
> dsp program by a Visual Basic 6.0 program. I have
> the application
> note from TI (mcbsp to uart), and the schematics of
> the level
> converter (TTL to Rs232), but I don't know how to
> conect these level
> converter to the dsp. Where are the Tx and Dx pins
> (Edma pins 14 and
> 15) on the dsp? In any connector, I supose... And
> the power pins...

You mention connectors - are you using a 6711 DSK
board?? If so, refer to the schematics [located in
"the CCS install directory"/docs/pdf. If you are
using some other board, refer to the schematics. The
pins that you are looking for are connected to
transmit data and receive data for one of the McBSPs
[as referenced in the app note].

> In fact I don't know how to connect any pin! If
> somebody can tell me
> somthing, it would be fantastic.
>
> And if somebody knows how can I connect 2 PC by
> rs232 (one sending
> data in VB and one monitoring by hyperterminal) for
> trying my Visual
> Basic program, please tell me too.

The cable that you are looking for is normally called
a 'null modem cable' and may be purchased at a
computer store that that sells cables [if you have
access]. If you have to make a cable, do the
following [the info below is from memory - the signals
listed are correct, but I could have left one out].

1. lookup up the pinout of the DB9 connector on the
PC.
2. connect the signals as follows
Tx data - Rx data
Rx data - Tx data
GND - GND
RTS - CTS
CTS - RTS
DSR - DTR
DTR - DSR
3. connect 2 PCs running hyperterminal on each to
check the cable.

>
> Thank you very much
>
> See you
>
> Pau Segui. >
> c6x-unsubscribe@c6x-...