Echo''s on serial pins
Archiver
Posts: 46,084
Known feature / bug -- the serial (programming) port echos everything. I
would get a Max232 chip and use two other ports.
Original Message
> I've got a BS2SX in my application, and am communicating to it via
> the Sin and Sout pins hooked to my PC. When I send communication to
> it, it hears just fine, but it seems to be echoing the received
> transmission on the Sout line. I've scoped the line, used
> hyperterminal, and a Visual Basic program to verify that it isn't
> just a ghost. I've also used two different stamps (both BS2SX), and
> the problem is still there.
>
> Am I missing something about the native serial port pins? Should I
> be pulling something else low? High? Has anyone else seen this?
would get a Max232 chip and use two other ports.
Original Message
> I've got a BS2SX in my application, and am communicating to it via
> the Sin and Sout pins hooked to my PC. When I send communication to
> it, it hears just fine, but it seems to be echoing the received
> transmission on the Sout line. I've scoped the line, used
> hyperterminal, and a Visual Basic program to verify that it isn't
> just a ghost. I've also used two different stamps (both BS2SX), and
> the problem is still there.
>
> Am I missing something about the native serial port pins? Should I
> be pulling something else low? High? Has anyone else seen this?