I am writing a bit banging SPI driver for the HTS221 with no success,
I drive the SDO data just before the falling clk end
and I read the SDI data on the rising clk edge. I have included a screen capture of the Saleae logic analyzer..
which shows (what I believe to be a typical initialization) setting the reading cntrl1 and writing cntrl1 with PD= 1, but I am not seeing the correct response from the who am I request.