itm: hide has_software_lock, locked

There functions are internally queried inside lock, unlock.

Author: tmplt

CHANGELOG.md

@@ -12,7 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   Also fixes `VectActive::from` to take a `u16` and subtract `16` for
   `VectActive::Interrupt`s to match `SBC::vect_active()` (#373).
 - DWT: add `configure` API for address, cycle count comparison (#342, #367).
-- ITM: add `configure` API; `lock`, `unlock`, `busy`, `locked` functions (#342, #383).
+- ITM: add `configure` API; `lock`, `unlock`, `busy` functions (#342, #383).
 - TPIU: add API for *Formatter and Flush Control* (FFCR) and *Selected Pin Control* (SPPR) registers (#342).
 - Add `std` and `serde` crate features for improved host-side ITM decode functionality when working with the downstream `itm`, `cargo-rtic-scope` crates (#363, #366).
 

src/peripheral/itm.rs

@@ -251,15 +251,15 @@ impl ITM {
     ///
     /// See (coresight, B2.3.10).
     #[inline]
-    pub fn has_software_lock(&self) -> bool {
+    fn has_software_lock(&self) -> bool {
         self.lsr.read().sli()
     }
 
     /// Checks whether the peripheral is locked.
     ///
     /// See (coresight, B2.3.10).
     #[inline]
-    pub fn locked(&self) -> bool {
+    fn locked(&self) -> bool {
         self.has_software_lock() && self.lsr.read().slk()
     }