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

Jon,

In the line where you specify options for DEVICE, have you tried using

DEVICE          SX28, OSCXT1


For my SX-48 project, I used this syntax for setting the frequency:

FREQ    4000000

I know I'm starting to reach here.

Another idea is to use an oscilloscope to look at the data as it is transferred.  In that way, you could compare the transfer with and without the SX Key.  Without an oscilloscope, you might have to add some code to display various values of variables on the LCD.  For example, is it possible to display the data before the conversions for display?  Could you rotate through the bits, add $30, and display each bit?  This would be another way of looking at differences with and without the SX Key.

Joe

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