Move some methods on low_level timer to be available on simpler timers

Author: usbalbin

embassy-stm32/src/timer/low_level.rs

@@ -505,6 +505,18 @@ impl<'d, T: GeneralInstance1Channel> Timer<'d, T> {
             }
         }
     }
+
+    pub fn set_prescaler(&mut self, psc: u16) {
+        self.regs_1ch().psc().write_value(psc);
+    }
+
+    /// Set output compare mode.
+    pub fn set_output_compare_mode(&self, channel: Channel, mode: OutputCompareMode) {
+        let raw_channel: usize = channel.index();
+        self.regs_1ch()
+            .ccmr_output(raw_channel / 2)
+            .modify(|w| w.set_ocm(raw_channel % 2, mode.into()));
+    }
 }
 
 impl<'d, T: GeneralInstance2Channel> Timer<'d, T> {
@@ -611,14 +623,6 @@ impl<'d, T: GeneralInstance4Channel> Timer<'d, T> {
         });
     }
 
-    /// Set output compare mode.
-    pub fn set_output_compare_mode(&self, channel: Channel, mode: OutputCompareMode) {
-        let raw_channel: usize = channel.index();
-        self.regs_gp16()
-            .ccmr_output(raw_channel / 2)
-            .modify(|w| w.set_ocm(raw_channel % 2, mode.into()));
-    }
-
     /// Set output polarity.
     pub fn set_output_polarity(&self, channel: Channel, polarity: OutputPolarity) {
         self.regs_gp16()