pub type EXTSEL_W<'a> = FieldWriterSafe<'a, u32, CR2_SPEC, u8, EXTSEL_A, 3, 17>;
Field EXTSEL writer - External event select for regular group
EXTSEL
Timer 3 CC1 event
Timer 2 CC3 event
Timer 1 CC3 event
Timer 8 CC1 event
Timer 8 TRGO event
Timer 5 CC1 event
Timer 5 CC3 event
SWSTART