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

My SX-key seems to have stopped working mysteriously (I get a "SX-key not found on com#"). I have been using it for several weeks programming SXs with the same program every time and it has worked fine up until today. I have tried things like restarting my computer, reinstalling the Parallax USB-to-serial drivers, installed the latest version of the SX-Key editor, tried programming different SXs with different boards and power supplies... no luck. I'm thinking my SX-key is probably just bad for one reason or another and it's time for a replacement.
 

Since I am just using the same program over and over, will the SX-blitz work for me? Reading on the Parallax website it seems like it will work fine for programming SXs, it just lacks some debugging capabilities which I don't use anyway.


I'm also curious what sorts of things might have caused my SX-Key to stop working. The board I am connecting it to during programming is powered by batteries through a 5v LDO regulator. There is a 50mHz oscillator connected to the SX on the board and I'm wondering if it's okay to have that connected while programming (I read somewhere that it was okay). What about a loose connection between the header and the SX-key? I've noticed sometimes I would get a chip connection error and I could get it to program after "jiggling" the SX-key on the header.

 

Thanks for any help,

Clint

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