fdcan implementation takes rec::Fdcan, so the other fdcan can't use it

[SDEEV]

can.rs:242

impl Can<FDCAN2> { pub fn fdcan2( rb: FDCAN2, prec: rec::Fdcan, ) -> fdcan::FdCan<Self, fdcan::ConfigMode> { prec.enable(); // Enable APB1 peripheral clock

prec is taken and never returned

The underlying trait CanExt forces this behaviour

[richardeoin]

Unfortunately the clock to all FDCAN peripherals are controlled by a single memroy-mapped bit in hardware. Therefore in the HAL abstraction it's not possible to safely clock multiple FDCAN blocks.

It is possible with unsafe using this method