Controlling serial port

[Seb Schöps]

Hi everyone,

I need a way to control the serial COM port from my PC. I find several
options to do this with VB 6.0, but I can't figure out how to do this with
..NET. What I need to do is:

- set the RTS bit to 1 or 0
- set the DTR bit to 1 or 0
- set the TXD bit to 1 or 0
- get the CTS bit.

That's all. Does anyone know how to do this?

Thanks very much in advance!

Regards
Sebastian

 

[Dick Grier]

Hi,

There is no way to "- set the TXD bit to 1 or 0" in any language. TxD is
controlled by the UART. The other things are simple to do

You send data using the Windows serial APIs, or a control or class that
wraps these APIs. There are lots of options in these areas. I have code in
my book (see below), you can download NETComm.ocx from my homepage, and
there are LOTS of resources available on the web.

Dick

--
Richard Grier (Microsoft Visual Basic MVP)

See www.hardandsoftware.net for contact information.

Author of Visual Basic Programmer's Guide to Serial Communications, 3rd
Edition ISBN 1-890422-27-4 (391 pages) published February 2002.

 

[thomas wenning]

Hallo Seb,

Hi everyone,

I need a way to control the serial COM port from my PC. I find several
options to do this with VB 6.0, but I can't figure out how to do this with
.NET. What I need to do is:

- set the RTS bit to 1 or 0
- set the DTR bit to 1 or 0
- set the TXD bit to 1 or 0
- get the CTS bit.

look at your crossposting (German VB.net) and the answer from Thomas
Scheidegger.

Gruß

Thomas

 

[Jason L James]

Dick,

where can I get a copy of your book in the United Kingdom?

Amazon.co.uk says it is out of stock.

How much of the content is using VB.Net?

I have some experience of RS232 in VB6 and
interfacing with microcontrollers, etc, but very
little in .Net. I have used the VB6 CommControl
in VB.Net but that is all.

Thanks,

Jason.

 

[Dick Grier]

Hi,

Grey Matter.

However, it may be faster (and perhaps no more expensive) to order directly
from www.mabry.com/vbpgser.

Dick

--
Richard Grier (Microsoft Visual Basic MVP)

See www.hardandsoftware.net for contact information.

Author of Visual Basic Programmer's Guide to Serial Communications, 3rd
Edition ISBN 1-890422-27-4 (391 pages) published February 2002.