Re: 1-wire to USB converter that can use 1820s directly

[nobody@xxxxxxxxxxxx (Dave Houston)]

"Rod Speed" <rod.speed.aaa@xxxxxxxxx> wrote:

>Serial ports done that way arent that easy to support in VBA
>either, support for non standard serial ports is pretty poor.

For software on the PC there is absolutely no difference between a serial
port on a PCI card, a virtual serial port (such as those used with
USB-serial or those used with TCP/IP serial servers). They are seen as if
they were serial ports on the motherboard. The advantage is that legacy
software can make use of them.

One potential glitch is that legacy software may only support COM1-COM4
while the ports may be identified as COM1-COM99 (you can rename them). If
you are writing your own software, it's fairly simple to enumerate all of
the ports and make them available to your software - do a Google search on
"VB enumerate serial ports". You should be able to use the same code in VBA.

Another potential glitch is that USB-serial converters are not all created
equal. Some do not handle the handshaking lines. The only fix is to use one
that does. The CP2102 handles everything.