--- In lpc2000@yahoogroups.com, David Hawkins <dwh@o...> wrote: > > Hi all, > > I have an application where I need to emulate a synchronous > serial interface to a microVAX (yeah really!). > > The microVAX reads a 21-bit angular encoder position. > The encoders need to be changed, but the old control > interface needs to be retained (at least for now). > I have a new-style encoder that I need to adapt to > the old interface. > So the angular encoder puts out 21 clock pulses with 21 transitions of data, right? > The old encoder interface is basically a 21-bit shift > register. The new encoders use a serial interface, > and some processing of errors and CRCs is required. > The new encoder will have a bridge between it and the VAX, right ? OK, there is more here then I picked up on, my first read thru. As you stated, you have an idea how to do this. So I'll leave it up to you. If you have a web site of what your doing here, I would like to see some pics. hamilton
Message
Re: Multi-byte SPI transfers in slave mode (21-bits actually)
2005-11-21 by donhamilton2002
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