Add simple PWM, add PWM pin definitions also accessible from low-level API.

embassy-stm32/src/pwm/pins.rs

@@ -0,0 +1,138 @@
+use crate::gpio::OptionalPin;
+
+#[cfg(feature = "unstable-pac")]
+pub mod low_level {
+    pub use super::sealed::*;
+}
+
+pub(crate) mod sealed {
+    use crate::gpio::sealed::OptionalPin;
+
+    pub trait Channel1Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait Channel1ComplementaryPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait Channel2Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait Channel2ComplementaryPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait Channel3Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait Channel3ComplementaryPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait Channel4Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait Channel4ComplementaryPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait ExternalTriggerPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait BreakInputPin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait BreakInputComparator1Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait BreakInputComparator2Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+
+    pub trait BreakInput2Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait BreakInput2Comparator1Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+    pub trait BreakInput2Comparator2Pin<Timer>: OptionalPin {
+        unsafe fn configure(&mut self);
+    }
+}
+pub trait Channel1Pin<Timer>: sealed::Channel1Pin<Timer> + OptionalPin + 'static {}
+pub trait Channel1ComplementaryPin<Timer>:
+    sealed::Channel1ComplementaryPin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait Channel2Pin<Timer>: sealed::Channel2Pin<Timer> + 'static {}
+pub trait Channel2ComplementaryPin<Timer>:
+    sealed::Channel2ComplementaryPin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait Channel3Pin<Timer>: sealed::Channel3Pin<Timer> + 'static {}
+pub trait Channel3ComplementaryPin<Timer>:
+    sealed::Channel3ComplementaryPin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait Channel4Pin<Timer>: sealed::Channel4Pin<Timer> + 'static {}
+pub trait Channel4ComplementaryPin<Timer>:
+    sealed::Channel4ComplementaryPin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait ExternalTriggerPin<Timer>:
+    sealed::ExternalTriggerPin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait BreakInputPin<Timer>: sealed::BreakInputPin<Timer> + OptionalPin + 'static {}
+pub trait BreakInputComparator1Pin<Timer>:
+    sealed::BreakInputComparator1Pin<Timer> + OptionalPin + 'static
+{
+}
+pub trait BreakInputComparator2Pin<Timer>:
+    sealed::BreakInputComparator2Pin<Timer> + OptionalPin + 'static
+{
+}
+
+pub trait BreakInput2Pin<Timer>: sealed::BreakInput2Pin<Timer> + OptionalPin + 'static {}
+pub trait BreakInput2Comparator1Pin<Timer>:
+    sealed::BreakInput2Comparator1Pin<Timer> + OptionalPin + 'static
+{
+}
+pub trait BreakInput2Comparator2Pin<Timer>:
+    sealed::BreakInput2Comparator2Pin<Timer> + OptionalPin + 'static
+{
+}
+
+macro_rules! impl_no_pin {
+    ($timer:ident, $signal:ident) => {
+        impl crate::pwm::pins::sealed::$signal<crate::peripherals::$timer> for crate::gpio::NoPin {
+            unsafe fn configure(&mut self) {}
+        }
+        impl crate::pwm::pins::$signal<crate::peripherals::$timer> for crate::gpio::NoPin {}
+    };
+}
+
+#[allow(unused)]
+macro_rules! impl_pin {
+    ($timer:ident, $signal:ident, $pin:ident, $af:expr) => {
+        impl crate::pwm::pins::sealed::$signal<crate::peripherals::$timer>
+            for crate::peripherals::$pin
+        {
+            unsafe fn configure(&mut self) {
+                use crate::gpio::sealed::{AFType, Pin};
+                use crate::gpio::Speed;
+                self.set_low();
+                self.set_speed(Speed::VeryHigh);
+                self.set_as_af($af, AFType::OutputPushPull);
+            }
+        }
+
+        impl crate::pwm::pins::$signal<crate::peripherals::$timer> for crate::peripherals::$pin {}
+    };
+}