Rs 232

Archiver

[font=arial,helvetica]Where could I get info on sending serial data from a BS2 by serial to an
audio amp?

Thank You
David Martin[/font]

Archiver

How about the SEROUT commands, check the Basic Stamp Manual v 2.0?
Download it at www.parallaxinc.com.


> Where could I get info on sending serial data from a BS2 by serial
to an
> audio amp?
>
> Thank You
> David Martin

Archiver

I am trying to get my stamp (BS2SX) to send something to a microsoft
access database to which I have added the xcomm control.

Here is the code at the stamp

N9600 CON $40F0
thepacket var byte(5)
startsending:
thepacket(0) = "A"
thepacket(1) = "t"
SEROUT send_pin,N9600,[noparse][[/noparse]thepacket(0)]
pause 1000
SEROUT send_pin,N9600,[noparse][[/noparse]thepacket(1)]
pause 1000

goto startsending

If I set send_pin to 16, it works like I think it should.

If I set send_pin to a different pin (to which I have attached a serial
port connector and wired according to the stamp manual section on
serout) nothing happens. I only have a stamp pin connected to pin 2 of
the db-9. Is it possible I also need to connect another pin for flow
control?

Thanks

bob

Archiver

If you are using a Max232 driver, or equivalent,
then you use the '$4000' part of the N9600.
SEROUT 16 ... DOES use a Max232 driver equiv.,
which is on the BS2 module, so $40F0 is good
for this.

If you are NOT using a MAX232 driver, you
should NOT use the '$4000', so your baud
rate selector becomes $F0. This would apply
to any data pin except '16'.

However -- your PC will not be happy receiving
just 0V and +5V -- it really wants the +/- 10V
or so the Max232 gives you -- and so you do need
to add a max232 circuit, and then use the $40F0
baud circuit. This should fix your problem.

OR, you can continue to use SEROUT 16 ..., if
that works for you.

--- In basicstamps@yahoogroups.com, "Bob Roan" <bob@t...> wrote:
>
> I am trying to get my stamp (BS2SX) to send something to a microsoft
> access database to which I have added the xcomm control.
>
> Here is the code at the stamp
>
> N9600 CON $40F0
> thepacket var byte(5)
> startsending:
> thepacket(0) = "A"
> thepacket(1) = "t"
> SEROUT send_pin,N9600,[noparse][[/noparse]thepacket(0)]
> pause 1000
> SEROUT send_pin,N9600,[noparse][[/noparse]thepacket(1)]
> pause 1000
>
> goto startsending
>
> If I set send_pin to 16, it works like I think it should.
>
> If I set send_pin to a different pin (to which I have attached a
serial
> port connector and wired according to the stamp manual section on
> serout) nothing happens. I only have a stamp pin connected to pin
2 of
> the db-9. Is it possible I also need to connect another pin for
flow
> control?
>
> Thanks
>
> bob