first naive implementation of dac trait

Author: mendelt

src/blocking/dac.rs

@@ -0,0 +1,10 @@
+//! Trait for digital to analog conversion
+
+/// Represents a single DAC channel.
+pub trait DAC<WORD> {
+    /// Error type returned by DAC methods
+    type Error;
+
+    /// Set the output of the DAC
+    fn try_set_output(&mut self, value: WORD) -> Result<(), Self::Error>;
+}

src/blocking/mod.rs

@@ -4,6 +4,7 @@
 //! traits. To save boilerplate when that's the case a `Default` marker trait may be provided.
 //! Implementing that marker trait will opt in your type into a blanket implementation.
 
+pub mod dac;
 pub mod delay;
 pub mod i2c;
 pub mod rng;