Compilation error with version 1.9.0 on g431 embedded target

[wolfjazz]

Hi,

I tried to update my dependencies to 1.9.0 (from 1.8.5), but I get a compilation error now when trying to build the package.

In my dependencies, I use

[dependencies]
critical-section = "1.2"  # critical section implementation
cortex-m = { version = "0.7", features = ["inline-asm", "critical-section-single-core"] }
cortex-m-interrupt = "0.2"  # interrupt handling
cortex-m-rt = { version = "0.7", features = ["zero-init-ram", "paint-stack"] }
hal = { package = "stm32-hal2", version = "~1.9", features = ["g431", "g4rt", "embedded_hal"] }

I am on Windows, use no_std in my project, and I am compiling with stable Rust. stm32-hal2 on 1.8.5 works fine, on 1.9.0 it doesn't.

I get the following compiler errors:

error[E0599]: the method `wait_for_idle` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:752:14
    |
752 |         self.wait_for_idle()?;
    |              ^^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `set_cr2_write` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:754:47
    |
754 |             i2c::Operation::Write(rb) => self.set_cr2_write(addr, rb.len(), false),
    |                                               ^^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `set_cr2_read` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:755:46
    |
755 |             i2c::Operation::Read(wb) => self.set_cr2_read(addr, wb.len(), false),
    |                                              ^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `write_bytes` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:759:47
    |
759 |             i2c::Operation::Write(rb) => self.write_bytes(rb),
    |                                               ^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `read_bytes` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:760:46
    |
760 |             i2c::Operation::Read(wb) => self.read_bytes(wb),
    |                                              ^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `wait_for_idle` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:767:26
    |
767 |                     self.wait_for_idle()?;
    |                          ^^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `set_cr2_write` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:768:26
    |
768 |                     self.set_cr2_write(addr, wb.len(), false);
    |                          ^^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `wait_for_idle` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:771:26
    |
771 |                     self.wait_for_idle()?;
    |                          ^^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `set_cr2_read` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:772:26
    |
772 |                     self.set_cr2_read(addr, rb.len(), false);
    |                          ^^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `write_bytes` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:779:51
    |
779 |                 i2c::Operation::Write(rb) => self.write_bytes(rb),
    |                                                   ^^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `read_bytes` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:780:50
    |
780 |                 i2c::Operation::Read(wb) => self.read_bytes(wb),
    |                                                  ^^^^^^^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

error[E0599]: the method `stop` exists for mutable reference `&mut I2c<R>`, but its trait bounds were not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:784:14
    |
784 |         self.stop();
    |              ^^^^ method cannot be called on `&mut I2c<R>` due to unsatisfied trait bounds
    |
note: trait bound `R: util::RccPeriph` was not satisfied
   --> C:\Users\mosma\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\stm32-hal2-1.9.0\src\i2c.rs:366:51
    |
364 | impl<R> I2c<R>
    |         ------
365 | where
366 |     R: Deref<Target = pac::i2c1::RegisterBlock> + RccPeriph,
    |                                                   ^^^^^^^^^ unsatisfied trait bound introduced here

For more information about this error, try `rustc --explain E0599`.
error: could not compile `stm32-hal2` (lib) due to 12 previous errors

Any idea?

[David-OConnor]

Interesting! I'm working a project that uses I2C on G431 currently. Is it only the wait_for_idle() function that triggers this?

[David-OConnor]

Does this work on the latest release? (1.9.2)? Just un-broke I2C.

[wolfjazz]

Yes! It works again. Thank you very much! :)