UART RLP->Managed

If i just short Tx-Rx on one of the UART ports, could UART be used as a fast way of sending data from RLP to Managed? Or would the UART handling just give more overhead than invoking a RLP call?

You can’t. Interrupts are added to uart drivers automatically.

What do you mean?

If I send some data with UART from RLP I should get that data in an interrupt on the managed side?

No it will not work. Maybe largebuffer object.

Cerberus/Cerb40 has largebuffer?

No but you can add it