So isn't it just like setting CS for desired slave should activate it for receiving data? Cuz right now it seems like you can set CS whenever you want and it does nothing but only when you set MRDY it gets interrupted for receiving... However, according to i.e. http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus it seems like 4 lines should be sufficient for SPI interface implementation... while on CC2530 ZNP 6 lines are being used. Could anyone explain me why?
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