µVISION DEBUGGER: CANNOT TYPE CHARACTERS INTO SERIAL WINDOW

Information in this article applies to:

• C51 All Versions
• µVision Version 2 and Later

QUESTION

I have an 8051 application that uses the serial port. I tried to run the simulator with the serial window and I can get output there but I cannot type characters into the serial window. Is there anything I need to configure?

ANSWER

You must ensure that the serial port receiver (the REN bit in the SCON register) is set. For example:

REN = 1;

Once serial reception enabled, you will be able to input characters into the serial window.

SEE ALSO

• DSCOPE: USING THE 320'S SECOND SERIAL PORT
• µVision DEBUGGER: SERIAL WINDOW CHARS ABOVE 0X7F

Last Reviewed: Tuesday, June 29, 2004