update dependencies (primary goal: defmt v1.0) & use defmt again in lib

.github/workflows/CI.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         rust: [1.81.0, stable]
-        features: ['']
+        features: ['', '--all-features']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

CHANGELOG.md

@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 <!-- next-header -->
 ## [Unreleased] - ReleaseDate
 
+### Added
+
+* Re-introduced usage of `defmt` (the dependency was still present, only its usage and the `defmt-03` feature were
+ removed before the previous release)
+
+### Changed
+
+* Updated to `defmt` 1.0 (non-breaking change, backwards compatible with 0.3 through semver trick)
+
 ## [1.0.0] - 2024-09-23
 ### Added
 

Cargo.toml

@@ -12,11 +12,12 @@ license = "MIT OR Apache-2.0"
 authors = ["Ralph Ursprung <[email protected]>", "ripytide <[email protected]>"]
 
 [features]
+defmt = ["dep:defmt", "embedded-hal/defmt-03"]
 
 [dependencies]
 embedded-hal = "1.0"
 
-defmt = { version = "0.3", optional = true }
+defmt = { version = "1.0", optional = true }
 
 [dev-dependencies]
 embedded-hal-mock = { version = "0.11", default-features = false, features = ["eh1"] }

README.md

@@ -20,6 +20,9 @@ See the documentation for usage examples.
 * You plan on using a single motor with the standby feature: use `Motor` and control the standby pin manually
 * You plan on using a single motor without the standby feature: use `Motor`
 
+## Optional features
+* `defmt`: you can enable this feature to get a `defmt::Format` implementation for all structs & enums in this crate and a `defmt::trace` call for every speed change.
+
 ## Examples
 A simple example for the STM32F4 microcontrollers is [available](examples/stm32f4-single-motor-example/README.md).
 

examples/stm32f4-single-motor-example/Cargo.toml

@@ -7,12 +7,12 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 cortex-m = { version = "0.7", features = ["critical-section-single-core"]}
 cortex-m-rtic = "1.1.4"
-panic-probe = { version = "0.3", features = ["print-defmt"] }
+panic-probe = { version = "1.0", features = ["print-defmt"] }
 
 stm32f4xx-hal = { version = "0.22", features = ["stm32f401", "rtic1"] }
 
-defmt = "0.3.10"
-defmt-rtt = "0.4"
+defmt = "1.0"
+defmt-rtt = "1.0"
 
 # use `tb6612fng = "0.1"` in reality; path used here to ensure that the example always compiles against the latest master
 tb6612fng = { path = "../.." }

src/lib.rs

@@ -9,6 +9,9 @@
 //! * You plan on using both motors without the standby feature: use two separate [`Motor`]s
 //! * You plan on using a single motor with the standby feature: use [`Motor`] and control the standby pin manually
 //! * You plan on using a single motor without the standby feature: use [`Motor`]
+//!
+//! ## Optional features
+//! * `defmt`: you can enable this feature to get a `defmt::Format` implementation for all structs & enums in this crate and a `defmt::trace` call for every speed change.
 
 #![forbid(unsafe_code)]
 #![deny(warnings)]
@@ -24,6 +27,7 @@ use embedded_hal::pwm::SetDutyCycle;
 
 /// Defines errors which can happen when calling [`Motor::drive()`].
 #[derive(PartialEq, Eq, Debug, Copy, Clone)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum MotorError<IN1Error, IN2Error, PWMError> {
     /// An invalid speed has been defined. The speed must be given as a percentage value between 0 and 100 to be valid.
     InvalidSpeed,
@@ -68,6 +72,7 @@ impl<
 
 /// Defines errors which can happen when calling [`Tb6612fng::new()`].
 #[derive(PartialEq, Eq, Debug, Copy, Clone)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum Tb6612fngError<STBYError> {
     /// An error in setting the initial output of the standby pin
     Standby(STBYError),
@@ -93,6 +98,7 @@ impl<STBYError: Debug + Error + 'static> Error for Tb6612fngError<STBYError> {
 
 /// Defines the possible drive commands.
 #[derive(PartialEq, Eq, Debug, Copy, Clone)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum DriveCommand {
     /// Drive forward with the defined speed (in percentage)
     Forward(u8),
@@ -109,6 +115,7 @@ pub enum DriveCommand {
 /// Use the [`Motor`] struct directly if you only have one motor.
 /// See the crate-level comment for further details on when to use what.
 #[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct Tb6612fng<MAIN1, MAIN2, MAPWM, MBIN1, MBIN2, MBPWM, STBY> {
     /// The first motor, labelled as 'A' on the chip
     pub motor_a: Motor<MAIN1, MAIN2, MAPWM>,
@@ -245,6 +252,7 @@ where
 /// This is unaware of the standby pin. If you plan on using both motors and the standby feature then use the [`Tb6612fng`] struct instead.
 /// See the crate-level comment for further details on when to use what.
 #[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct Motor<IN1, IN2, PWM> {
     in1: IN1,
     in2: IN2,
@@ -350,6 +358,9 @@ where
             }
         }
 
+        #[cfg(feature = "defmt")]
+        defmt::trace!("driving: {}", drive_command);
+
         self.pwm
             .set_duty_cycle_percent(speed)
             .map_err(MotorError::PwmError)?;