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

I'm using the internal 4MHZ clock in the chip.  I've tried running the program with and without USB key attached.  No difference.  I did run a simple led on/off circuit to test SX28 board and it programs and runs fine.  At that point I removed all components and wires from SX28 board and loaded the initial program and tested with my FLUKE multimeter.  It's doing the same thing.  I think it's a program problem?  What I don't get is that it works perfect on the Professional Development Board.  I haven't changed anything in the code between the 2 boards.  I've read the chip in the development board and it matched the set-up for the chip on the protoboard.  I'm baffled!!  Thanks!!   

                  Greg

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