Hi,
> I need something like "Buffalo" (of HC11), where I can access my device from HyperTerminal ...
If you want a simple USB COM port skeleton program that will allow you to communicate from HyperTerminal to a virtual COM port exposed by the M52221DEMO board via its USB interface, you might check out skeleton.zip here:
Basically, that will allow you to run the USB interface either in host or device mode (see readme.txt) and, if in device mode, you can interpret simple command-line commands (from which point you could implement your own debugger-like functionality). A few existing commands implement both flash cloning and USB-based flash upgrades (by pasting an S19 file into the HyperTerminal Window).
My goal is to make a skeleton program anybody can adapt to their own needs.
One other thing you might be interested in if you're trying to learn (or teach!) about the MCF52221 MCU is "StickOS", available at the same website. You can load this onto the M52221DEMO board and then just connect to it with a HyperTerminal and control most of the I/O pins and internal peripherals of the MCU with a simple BASIC programming language, including support for digital input/output, analog input/output, uart input/output, and frequency output pins... It allows you to quickly connect up things if your requirements are simple (like in a classroom :smileyhappy:.
Good luck!
-- Rich