sensing temperature with a thermocouple / thermocouple

hello, testing the spi examples of SDK16.0.0 I was trying to read a type k thermocouple with a max31856 on the nRF52840dk board, I made the connections of ss, sck, mosi, miso. The problem is that I don't get thermocouple values, is there another way to read this type of sendor with the nRF52840dk board?