Currently myself working with ADT7302 SPI sensor for monitoring temperature.
For that I have connect the sensor to Galileo board or Minnowboard MAX which are running Linux OS.
I'm not getting any kind of reading from the MISO line instead I got 0xFF always.
Now my question is how can I access through standard SPI ioctl syscall and SPI_IOC_MESSAGE macro.
Is the ADT7302 is partially read only sensor ? because from the data sheet I don't understand the how the sensor is perform communication to master. there are no any internal register like control register are provided at all.
I didn't found any kind of documents or code from the Google. So I think you are the only one person to giving me an answer because after all you were develop the driver for the same.