still have a problem, not quite as general as before.
I can only get a clock signal if I explicitly assign a value to SPIDAT, e.g. mov SPIDAT, #055h
however because its full duplex, you'd expect that you could write a value in on the opposing clock transition.
I seem to have problems with this. i have a signal generator supplying a signal (varying from all low to all high, also tried a few sample bitstreams in sync with the clock).
I then use code to wait for the interrupt (JNB ISPI,$) and then read the SPIDAT register (mov SPIDAT, p2)
I dont seem to be getting any values out of the register and i'm out of ideas
Any help would be massively appreciated
Thanks
Frank