Posted on April 15, 2014 at 19:52It's SPI, wouldn't you need to send at least TWO bytes, when you send the command it doesn't arrive at the part until after you've shifted back the current response. If you want the response to the command itself you'd need to clock the interface some more.
SPI is symmetrical, data shifts into the slave, and shifts back to the master.
Review the data sheet for your part, and look at the signalling on a logic analyzer if it makes it clearer for you.
