Finish esp32_p4 port abstraction

Author: ckormanyos

ref_app/ref_app.vcxproj

@@ -1401,10 +1401,6 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
     </ClCompile>
-    <ClCompile Include="src\mcal\xtensa_esp32_p4\gpio.c">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
-    </ClCompile>
     <ClCompile Include="src\mcal\xtensa_esp32_p4\mcal_cpu.cpp">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
@@ -3277,10 +3273,6 @@
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
     </ClInclude>
-    <ClInclude Include="src\mcal\xtensa_esp32_p4\gpio.h">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
-    </ClInclude>
     <ClInclude Include="src\mcal\xtensa_esp32_p4\mcal_benchmark.h">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>

ref_app/ref_app.vcxproj.filters

@@ -1402,9 +1402,6 @@
     <ClCompile Include="src\mcal\xtensa_esp32_p4\mcal_cpu.cpp">
       <Filter>src\mcal\xtensa_esp32_p4</Filter>
     </ClCompile>
-    <ClCompile Include="src\mcal\xtensa_esp32_p4\gpio.c">
-      <Filter>src\mcal\xtensa_esp32_p4</Filter>
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\math\calculus\derivative.h">
@@ -3198,9 +3195,6 @@
     <ClInclude Include="src\mcal\xtensa_esp32_p4\mcal_cpu.h">
       <Filter>src\mcal\xtensa_esp32_p4</Filter>
     </ClInclude>
-    <ClInclude Include="src\mcal\xtensa_esp32_p4\gpio.h">
-      <Filter>src\mcal\xtensa_esp32_p4</Filter>
-    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="src\util\STL\algorithm">

ref_app/src/app/led/app_led.cpp

@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-//  Copyright Christopher Kormanyos 2007 - 2025.
+//  Copyright Christopher Kormanyos 2007 - 2026.
 //  Distributed under the Boost Software License,
 //  Version 1.0. (See accompanying file LICENSE_1_0.txt
 //  or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -29,24 +29,25 @@ namespace local
 
 auto local::app_led_timer() noexcept -> app_led_timer_type&
 {
-  static app_led_timer_type local_app_led_timer
-  {
-    local::app_led_delay
-  };
+  static app_led_timer_type local_app_led_timer { };
 
   return local_app_led_timer;
 }
 
 auto app::led::task_init() -> void
 {
+  local::app_led_timer().start_interval(local::app_led_delay);
+
   mcal::led::led0().toggle();
 }
 
 auto app::led::task_func() -> void
 {
-  if(local::app_led_timer().timeout())
+  auto& my_app_led_timer { local::app_led_timer() };
+
+  if(my_app_led_timer.timeout())
   {
-    local::app_led_timer().start_interval(local::app_led_delay);
+    my_app_led_timer.start_interval(local::app_led_delay);
 
     mcal::led::led0().toggle();
   }