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Re: General questions on ZD1211B behaviour, for using ZD1211B in non-Linux embedded system

by Martin Maurer-5 :: Rate this Message:

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Hello,

i want to to use a ZD1211B in a non-Linux embedded system (hobbyist project, should be GPLed when working).

The system contains a uC with USB host and an USB stick (currently i have a SNU5600 from Philips).

The USB part is already working (at least i can access an usb mem stick), so now i can concentrate on ZD1211B part.

Reading in VID / PID (0471 / 1236) is also already working.

Can you perhaps help me with some initial steps to get ZD1211B working:

1) Is there meanwhile some documentation, how things are working or must existing drivers again be reverese engineered ? I saw some questions on it in the past but i think there was almost no documentation...

2) What initial steps are needed to setup operation of ZD1211B ?

3) Must i load firmware everytime ? Or only when used firmware is older than firmware in files ? Just for understanding: Is ZD1211B a RAM based device ?

4) Which firmware file must i load ? There are multiple ones (which have different names), must all of them loaded for complete software ? Is there a certain order for loading ? What does "ub", "uph", "uphm", "uphr", "ur" mean ?

5) Which source to take best as base for new development ? Look into latest linux sources or sourceforge archive ? Or somewhere else ?

6) Last, but not least: Has someone already done a similar thing, which i can take as reference ? But i haven't found something with google...

Regards and thanks for helping,

Martin Maurer

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« Return to Thread: Re: General questions on ZD1211B behaviour, for using ZD1211B in non-Linux embedded system