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eldruin / lsm303agr-rs

Platform agnostic Rust driver for the LSM303AGR ultra-compact high-performance eCompass module: ultra-low-power 3D accelerometer and 3D magnetometer
Apache License 2.0
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Derive Debug for modes #1

Closed chrysn closed 3 years ago

chrysn commented 3 years ago

This allows using Debug on the full device, and thus .unwrap() on .into_mag_continuous().

Without this, errors like this show when trying to unwrap:

error[E0599]: the method `unwrap` exists for enum `Result<lsm303agr::Lsm303agr<I2cInterface<I2CDevice>, MagContinuous>, ModeChangeError<riot_wrappers::i2c::Error, (), lsm303agr::Lsm303agr<I2cInterface<I2CDevice>, MagOneShot>>>`, but its trait bounds were not satisfied
  --> src/lib.rs:20:51
   |
20 |     let mut sensor = sensor.into_mag_continuous().unwrap();
   |                                                   ^^^^^^ method cannot be called on `Result<lsm303agr::Lsm303agr<I2cInterface<I2CDevice>, MagContinuous>, ModeChangeError<riot_wrappers::i2c::Error, (), lsm303agr::Lsm303agr<I2cInterface<I2CDevice>, MagOneShot>>>` due to unsatisfied trait bounds
   | 
  ::: /home/chrysn/git/crates/lsm303agr-rs/src/types.rs:14:1
   |
14 | pub struct ModeChangeError<CommE, PinE, DEV> {
   | -------------------------------------------- doesn't satisfy `_: Debug`
   |
   = note: the following trait bounds were not satisfied:
           `ModeChangeError<riot_wrappers::i2c::Error, (), lsm303agr::Lsm303agr<I2cInterface<I2CDevice>, MagOneShot>>: Debug`
eldruin commented 3 years ago

For the record, I have released this in version 0.1.1.