serial communcation character echo in the debug window

cindalusia

Hello!

I have successfully setup serial communication on the BS2sx stamp using the dedicated serial input pin. However, the debug terminal shows the character I have input. I am not using SEROUT or another debug command. Does this echo result because I am piggybacking on the download serial cable?

Thanks!

Jon Williams

Yes. The inverter design on the BS2 module causes anything sent to it to be echoed back. This is actually used, in fact, by the editor to ensure connection reliability during downloads. When writing custom programs that use this connection for serial communication, the PC application must be aware of the echo and have the ability to filter it out -- this is usually quite simple.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Jon Williams
Applications Engineer, Parallax