pub type CPOL_W<'a, const O: u8> = BitWriter<'a, u32, CSR_SPEC, CPOLSELECT_A, O>;
Field CPOL writer - Clock Polarity
CPOL
The inactive state value of SPCK is logic level zero.
The inactive state value of SPCK is logic level one.CPOL is used to determine the inactive state value of the serial clock (SPCK). It is used with NCPHA to produce therequired clock/data relationship between master and slave devices.