I am trying to connect the Freescale KM34Z50M to Cirrus Logic CDB5480 board. The CDB senses temperature and the KM controls a relay based on the temperature readings. The CDB senses the room temperature properly, but when I connect the KM TWR to it, the readings somehow get corrupted. I connect the pins 17,18,19,20 of SPI to the RX,TX,CLK and CS of the CDB respectively. Can anyone explain why this happens?
Thanks in advance.