pub type FTH_W<'a, const O: u8> = FieldWriter<'a, u32, CR2_SPEC, u8, FTH_A, 3, O>;
Field FTH writer - FIFO threshold
FTH
FIFO empty
1⁄4 FIFO
1⁄2 FIFO
3⁄4 FIFO
FIFO full