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

Hello Mr Phantom,

I wouldn't get discouraged quite yet.  There is probably a simple explaination as to why you are not able to download the example programs to your development board.  Once you get past these initial problems I think you'll find that the SX chips are pretty easy to work with and there are plenty of people on the forum that are willing to assist when you get stuck.

In order to troubleshoot the problem it would be helpful if you can provide some other details....

1.  You mentioned you bought the SX Tech Tool Kit PLUS but you didn't mention what power supply you are using.  Did you purchase the recommened power adapter from Parallax at the same time?  If not what power source are you using?

2.  The power from the SX-key should be 5v from the SX tech board or you'll have to supply the 5V if you're doing it manually on a breadboard.  Can you check with a voltmeter to ensure that there is 5v getting to the SX-Key?

3.  In regards to your host PC what are you using?  Is it a laptop, desktop, etc?  Does it have an internal modem??  If it does then it was common for the real 9-pin serial port to be disabled in the BIOS and the modem would be on COM1.  The SX-key might be trying to talk to a modem instead! 

4. Have you ever used the serial port on your PC to talk to any other devices?  I've run into one case with the small ribbon cable going to the back of the computer was left disconnected.  You'll need to confirm that the port is ok.

5.  If none of the above helps then what OS and version are you using?  

Let us know.

Robert

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