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

Frank,

please try the following:

Connect the SX-Key to the PC's COM port, as usual
Connect the SX-Key to your prototype, and power it up
On the PC launch a terminal program, like HyperTerminal
Configure the terminal program to connect to the COM port with the SX-Key at 57600-8-N-1, no handshake, and turn off echoing outgoing characters in case the terminal program has that feature
With the SX-Key powered, type in the following string (upper/lower case matters) without the quotes: "SX-Key"
While you type in each character, it should be echoed back from the SX-Key
As soon as you have typed in the last character (y), the SX-Key should answer with "SX-Key???", where the "???" stands for three arbitrary characters

If this works, you at least know that the SX20 on the SX-Key is alive, and that the communication with the PC is working.

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