init commit

src/clock.rs

@@ -0,0 +1,62 @@
+use crate::time::Hertz;
+
+pub const HBO_FREQ: Hertz = Hertz::from_raw(20_000_000);
+
+/// Frozen clock frequencies
+///
+/// The existence of this value indicates that the clock configuration can no longer be changed.
+/// The [self] module documentation gives some more information on how to retrieve an instance
+/// of this structure.
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub struct Clocks {
+    sysclk: Hertz,
+    apb1: Hertz,
+    apb2: Hertz,
+    #[cfg(not(feature = "va41628"))]
+    adc_clk: Hertz,
+}
+
+impl Clocks {
+    #[doc(hidden)]
+    pub fn __new(final_sysclk: Hertz, #[cfg(not(feature = "va41628"))] adc_clk: Hertz) -> Self {
+        Self {
+            sysclk: final_sysclk,
+            apb1: final_sysclk / 2,
+            apb2: final_sysclk / 4,
+            #[cfg(not(feature = "va41628"))]
+            adc_clk,
+        }
+    }
+
+    /// Returns the frequency of the HBO clock
+    pub const fn hbo(&self) -> Hertz {
+        HBO_FREQ
+    }
+
+    /// Returns the frequency of the APB0 which is equal to the system clock.
+    pub const fn apb0(&self) -> Hertz {
+        self.sysclk()
+    }
+
+    /// Returns system clock divied by 2.
+    pub const fn apb1(&self) -> Hertz {
+        self.apb1
+    }
+
+    /// Returns system clock divied by 4.
+    pub const fn apb2(&self) -> Hertz {
+        self.apb2
+    }
+
+    /// Returns the system (core) frequency
+    pub const fn sysclk(&self) -> Hertz {
+        self.sysclk
+    }
+
+    /// Returns the ADC clock frequency which has a separate divider.
+    #[cfg(not(feature = "va41628"))]
+    pub const fn adc_clk(&self) -> Hertz {
+        self.adc_clk
+    }
+}