Move espchrono ESP32 implementations into espcpputils lib

CMakeLists.txt

@@ -4,7 +4,6 @@ set(headers
 
 set(sources
     src/espchrono.cpp
-    src/espchrono_espimpl.cpp
 )
 
-idf_component_register(INCLUDE_DIRS src SRCS ${headers} ${sources} REQUIRES freertos esp_system cpputils date espcpputils)
+idf_component_register(INCLUDE_DIRS src SRCS ${headers} ${sources} REQUIRES freertos esp_system cpputils date)

src/espchrono_espimpl.cpp

@@ -1,27 +0,0 @@
-// local includes
-#include "espchrono.h"
-
-// system includes
-#include <time.h>
-
-// esp-idf inlcludes
-#include <esp_timer.h>
-
-using namespace std::chrono_literals;
-
-// actual implementations used on the ESP32
-
-namespace espchrono {
-auto utc_clock::now() noexcept -> time_point
-{
-    timeval tv;
-    gettimeofday(&tv, NULL);
-    seconds32 seconds{tv.tv_sec};
-    return time_point{seconds};
-}
-
-auto millis_clock::now() noexcept -> time_point
-{
-    return time_point{std::chrono::floor<duration>(std::chrono::microseconds{esp_timer_get_time()})};
-}
-} // namespace espchrono