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

Hey all, wait a second...

seems as if some are messing up two protocols: The one between the SX-Key IDE, and the SX-Key or SX-Blitz, and the protocol between the SX-Key/Blitz and the SX to be programmed.

The IDE-SX-Key/Blitz protocol is Parallax proprietary stuff, and in case of the SX-Key it is encrypted. Nevertheless, If you want so set up your own SX programmer, it does not help monitoring the data exchanged between the IDE, and the SX-Key/Blitz, as this has nothing directly to do with programming the chip.

Instead, follow the instructions given in the DeviceProgramming.pdf document. This describes the "official" methods how to communicate with an SX chip for programming/verifying. In the end, the SX-Key/Blitz devices do nothing else. They receive commands from the IDE (via the "Parallax" protocol), and convert them into the required serial sequences for communicating with the SX chip via the OSC pins, and they also provide the required programming voltage Vpp when necessary.

So, my suggestion is to study the DeviceProgramming document in detail instead of trying to analyze the internal IDE-SX-Key/Bliz communication.

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