Stamp 2 Programming Port
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I have read this paragraph in the stamp manual under the Serin command
several times.
I am running a NX-1000 board so it does not pertain to me right this
minute, but for future projects I am curious to know:
Can you or can you not use the Stamp 2 Carrier Board's DB9 Programming
port and P16 for serial communications?
Quote Stamp Manual:
"The SIN pin goes to a PC’s serial data-out pin on the DB9
connector built into BASIC Stamp development boards. The connector is
wired to allow both programming and run-time serial communication
(unless you are using the Stamp 2 Carrier Board which is only designed
for programming). For the built-in serial port set the Rpin argument to
16 in the SERIN command."
mkl
several times.
I am running a NX-1000 board so it does not pertain to me right this
minute, but for future projects I am curious to know:
Can you or can you not use the Stamp 2 Carrier Board's DB9 Programming
port and P16 for serial communications?
Quote Stamp Manual:
"The SIN pin goes to a PC’s serial data-out pin on the DB9
connector built into BASIC Stamp development boards. The connector is
wired to allow both programming and run-time serial communication
(unless you are using the Stamp 2 Carrier Board which is only designed
for programming). For the built-in serial port set the Rpin argument to
16 in the SERIN command."
mkl
Comments
I'll say "yes, it can" and explain my reasoning. On the Stamp 2
Carrier Board, there is a simple, direct, hard-wired connection
between the PC port's DTR signal presented to the DB9 connector and
the Stamp's ATN pin. The Stamp editor uses this connection (pulses
DTR) to reset the Stamp as part of the programming process.
If your PC-based software holds DTR de-asserted (most terminal
programs assert DTR by default), there's no reason why you can't use
I/O 16 on your previously programmed Stamp for serial I/O with the
PC. I do it all the time with Visual Basic and Borland's C++ using
a hardwired cable connection to a Stamp.
A hardware solution would be to modify your cable to put a switch on
DTR or use capacitive coupling on DTR. You could do the same on the
board itself, but cables are cheaper to replace than carrier boards
should your tool slip. ;-)
Regards,
Steve
On 27 Nov 02 at 11:14, Matt Lorenz wrote:
> I have read this paragraph in the stamp manual under the Serin
> command several times.
>
> I am running a NX-1000 board so it does not pertain to me right this
> minute, but for future projects I am curious to know:
>
> Can you or can you not use the Stamp 2 Carrier Board's DB9
> Programming port and P16 for serial communications?
http://www.qsl.net/kf4haz/cables/stamps/
or follow the link from
http://www.qsl.net/kf4haz/
Lonnie - KF4HAZ -
From: "Matt Lorenz" <mklorenz@
I have read this paragraph in the stamp manual under the Serin command
several times.
I am running a NX-1000 board so it does not pertain to me right this
minute, but for future projects I am curious to know:
Can you or can you not use the Stamp 2 Carrier Board's DB9 Programming
port and P16 for serial communications?
Quote Stamp Manual:
"The SIN pin goes to a PC’s serial data-out pin on the DB9
connector built into BASIC Stamp development boards. The connector is
wired to allow both programming and run-time serial communication
(unless you are using the Stamp 2 Carrier Board which is only designed
for programming). For the built-in serial port set the Rpin argument to
16 in the SERIN command."
mkl