DAC v2 basics.

embassy-stm32/src/dac/mod.rs

@@ -0,0 +1,48 @@
+#![macro_use]
+
+#[cfg_attr(dac_v2, path = "v2.rs")]
+mod _version;
+use crate::gpio::NoPin;
+pub use _version::*;
+
+pub(crate) mod sealed {
+    use super::*;
+    use crate::gpio::{OptionalPin, Pin};
+
+    pub trait Instance {
+        fn regs() -> &'static crate::pac::dac::Dac;
+    }
+
+    pub trait DacPin<T: Instance, const C: u8>: OptionalPin {}
+}
+
+pub trait Instance: sealed::Instance + 'static {}
+
+pub trait DacPin<T: Instance, const C: u8>: sealed::DacPin<T, C> + 'static {}
+
+impl<T: Instance, const C: u8> DacPin<T, C> for NoPin {}
+impl<T: Instance, const C: u8> sealed::DacPin<T, C> for NoPin {}
+
+macro_rules! impl_dac {
+    ($inst:ident) => {
+        impl crate::dac::sealed::Instance for peripherals::$inst {
+            fn regs() -> &'static crate::pac::dac::Dac {
+                &crate::pac::$inst
+            }
+        }
+
+        impl crate::dac::Instance for peripherals::$inst {}
+    };
+}
+
+macro_rules! impl_dac_pin {
+    ($inst:ident, $channel:expr, $pin:ident ) => {
+        impl crate::dac::DacPin<peripherals::$inst, $channel> for peripherals::$pin {}
+
+        impl crate::dac::sealed::DacPin<peripherals::$inst, $channel> for peripherals::$pin {
+            //fn af_num(&self) -> u8 {
+            //$af
+            //}
+        }
+    };
+}