File: MB9AF10xN.svd

Contents:

 <register> <name>WDG_RIS</name> <description>Hardware Watchdog Timer Interrupt Status Register</description> <addressOffset>0x10</addressOffset> <size>1</size> <access>read-only</access> <resetValue>0xFF</resetValue> <resetMask>0x00</resetMask> <!-- FIELDS --> <fields> <!-- FIELD "RIS" --> <field> <name>RIS</name> <description>Hardware watchdog interrupt status bit</description> <lsb>0</lsb> <msb>0</msb> <access>read-only</access> </field> </fields> </register>

Produces:

 impl R { # [ doc = r" Value of the register as raw bits" ] # [ inline ( always ) ] pub fn bits(&self) -> bool { self.bits } # [ doc = "Bit 0 - Hardware watchdog interrupt status bit" ] # [ inline ( always ) ] pub fn ris(&self) -> RISR { let bits = { const MASK: bool = true; const OFFSET: u8 = 0; ((self.bits >> OFFSET) & MASK as bool) != 0 }; RISR { bits } } }

Compiler error:

error[E0369]: binary operation `>>` cannot be applied to type `bool`  --> src/lib.rs:6496:22  | 6496 | ((self.bits >> OFFSET) & MASK as bool) != 0  | ^^^^^^^^^^^^^^^^^^^^^  |  = note: an implementation of `std::ops::Shr` might be missing for `bool` error: aborting due to previous error(s)

The problem I see that the SVD file declares the register has having a size of 1. I'm not sure if that allowed by the SVD format (the website appears to be down ATM) but I'd expect it to only allow sizes multiple of 8 (bytes bits). Note that we are talking about registers; bitfields can have any size (smaller than the size of their register).

Anyhow the current implementation maps a size of 1 to a bool so the bits field of R is bool which can be shifted to the right by OFFSET thus the compiler error.

cc @whitequark fallout from #84

EDIT I meant bits not bytes.