Wrong example, not working

[paologaleotti]

So im writing a firmware for STM32 in rust using this sensor, there is something wrong in the lib. Following the example (disabled std feature of course), once created the object it does not have all the fields and methods that it should:

[teamplayer3]

I tested it again and for me the auto-completion worked. You can try reloading the workspace in the rust-analyser extension. How do you create the i2c variable?

[paologaleotti]

It is possible that maybe my i2c is not compatible with the trait wanted by the library?

use stm32f1xx_hal::{
    i2c::{BlockingI2c, DutyCycle, Mode},
    prelude::*,
    stm32,
};

 let i2c = BlockingI2c::i2c1(
        dp.I2C1,
        (scl, sda),
        &mut afio.mapr,
        Mode::Fast {
            frequency: 400_000.Hz(),
            duty_cycle: DutyCycle::Ratio2to1,
        },
        clocks,
        1000,
        10,
        1000,
        1000,
    );

I'm just using the plain i2c from the stm32 HAL

[teamplayer3]

The hal you are using is using the old embedded_hal (0.2.7) version. ens160 only supports > 1.0. If this PR gets merged it will work. Maybe you can ask for the state of it.

A workaround would be to write a wrapper around the i2c impl which impls the new embedded-hal traits in your project.

[paologaleotti]

Oh ok so its actually the stm32 HAL that is using an old embedded_hal? i actually did not notice that.

[teamplayer3]

Yes, that's correct. I hope the workaround will work, or the PR is merged soon.