DW1000 Responding 0xFF


I am trying to Read DW1000 0x00 Reg but it’s Responding with 0xFFFFFF always

What could be the Reason any Idea ??

Thanks in Advance,

SPI lines normally idle high so a value of 0xFF is normally a sign that the device isn’t responding at all.
Check your power and clock to the DW1000.
Check the timings of your clock and chip select.
Check your SPI bus wiring.