Constant stm32ral::stm32f0::peripherals::tim3::SMCR::MSM::RW::Sync

pub const Sync: u32 = 0b1;

0b1: The effect of an event on the trigger input (TRGI) is delayed to allow a perfect synchronization between the current timer and its slaves (through TRGO). It is useful if we want to synchronize several timers on a single external event.