feat: postcard-experimental feature

Cargo.toml

@@ -18,6 +18,8 @@ default = []
 defmt-03 = ["dep:defmt"]
 serde = ["dep:serde"]
 async = ["dep:embedded-hal-async"]
+postcard = ["dep:postcard"]
+postcard-experimental = ["postcard", "postcard/experimental-derive"]
 
 [dependencies]
 embedded-hal = { version = "1" }
@@ -26,3 +28,4 @@ libm = "0.2"
 
 serde = { version = "1", features = ["derive"], default-features = false, optional = true }
 defmt = { version = "0.3", optional = true }
+postcard = { version = "1", optional = true }

src/accel.rs

@@ -18,6 +18,7 @@
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct Accel {
     pub(crate) x: i16,
     pub(crate) y: i16,
@@ -95,6 +96,7 @@ impl Accel {
 #[derive(Copy, Clone, Debug)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub enum AccelFullScale {
     /// ±2g range (16384 LSB/g)
     G2 = 0,
@@ -134,6 +136,7 @@ impl AccelFullScale {
 #[derive(Debug, Clone, Copy)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct AccelF32 {
     /// X-axis acceleration in g-force
     x: f32,

src/gravity.rs

@@ -24,6 +24,7 @@ use crate::quaternion::Quaternion;
 #[derive(Debug, Copy, Clone)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct Gravity {
     /// Forward/backward tilt component
     pub x: f32,

src/gyro.rs

@@ -11,6 +11,7 @@
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct Gyro {
     pub(crate) x: i16,
     pub(crate) y: i16,
@@ -61,6 +62,12 @@ impl Gyro {
     }
 }
 
+impl From<Gyro> for [i16; 3] {
+    fn from(value: Gyro) -> Self {
+        [value.x, value.y, value.z]
+    }
+}
+
 /// Full-scale range settings for the gyroscope.
 ///
 /// Each setting defines the maximum measurable rotation rate:
@@ -71,6 +78,7 @@ impl Gyro {
 #[derive(Copy, Clone, Debug)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub enum GyroFullScale {
     /// ±250°/s range (131 LSB/°/s)
     Deg250 = 0,
@@ -105,6 +113,7 @@ impl GyroFullScale {
 #[derive(Copy, Clone, Debug)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct GyroF32 {
     /// Roll rate (°/s)
     x: f32,
@@ -131,3 +140,9 @@ impl GyroF32 {
         self.z
     }
 }
+
+impl From<GyroF32> for [f32; 3] {
+    fn from(value: GyroF32) -> Self {
+        [value.x, value.y, value.z]
+    }
+}

src/quaternion.rs

@@ -16,6 +16,7 @@
 #[derive(Debug, Copy, Clone)]
 #[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(feature = "postcard-experimental", derive(postcard::experimental::max_size::MaxSize))]
 pub struct Quaternion {
     /// Scalar (real) component
     pub w: f32,