CAN FIlter Configuration

[andreapefe]

Hello,

I have written some code to try and modify the fdcan0 filters without success.
My code to configure the can is as follows :

let can1 = {

       let rx = gpioa.pa11.into_alternate().set_speed(Speed::VeryHigh);
       let tx = gpioa.pa12.into_alternate().set_speed(Speed::VeryHigh);

       let can = FdCan::new(dp.FDCAN1, tx, rx, &rcc);

       let mut can = can.into_config_mode();
       can.set_protocol_exception_handling(false);

       can.set_nominal_bit_timing(btr);

       //Create new Standard Filter
       let filtre = StandardFilter {
           filter: FilterType::BitMask {
               filter: 0x004,
               mask: 0x7FF
           },
           action: Action::StoreInFifo0,
       };

       can.set_standard_filter(
           StandardFilterSlot::_0,
           filtre,
       );

       //Set fdcan to reject all frames that do not match the filter
       can.set_global_filter(GlobalFilter::reject_all());

       hprintln!("-- Current Config: {:#?}", can.get_config());

       can.into_normal()
   };

The code builds without issues or warnings but when I try to print the messages received by the can using the can-echo.rs example I receive everything. The messages I am supposed to get and those that I don't. Also the receiver header does not have the right ID. Sending messages using a Raspberry Pi with different ID, the STM always sends back an ID equal to 0.
Furthermore, using GDB I have looked at the register configuration values at the address 0x4000A480 where the FDCAN_RXGFC (Global FIlter COnfiguration) register is located and the register has the reset value. No configuration has been applied.

Am I doing something wrong ? I some kind of configuration wrong ? I am using a testbench where I used to test the bus CAN using STM32F103 without any problems so it is not a hardware problem. The logic analyzer also reads the correct Standard ID so the problem is also not on the message sent by the Raspberry Pi.