In SX Microcontrollers, SX/B Compiler and SX-Key Tool, aa200orion wrote:

I am using an SX on an SX Tech board and trying to transmit serial data out through pin RB.1 to a USB-Serial adapter board, Parallax # 28030 to a computer.  I'm using a program to dump any data that comes across.  All that is printed out on the comuter is random data that has nothing to do with what I'm sending.  The command line is:  SEROUT RB.1, T9600, $41.  I have tried various baud rates with TRUE and INVERTED commands and nothing seems to work.  The dump program is one that I use all the time and I know it works.
 

Is there any circuitry that needs to be between pin RB.1 and the USB adapter board to prevent loading of the signal to the point where the USB adapter will not work properly?  I have looked in the NUTS & VOLTS columns and did not find that was of help, unless I missed it.

 

 

Any help will be greatly appreciated,

 

Jimmy

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