Added espchrono_impl.cpp

CMakeLists.txt

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

src/espchrono_impl.cpp

@@ -0,0 +1,25 @@
+// 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
+
+auto espchrono::utc_clock::now() noexcept -> time_point
+{
+    timeval tv;
+    gettimeofday(&tv, NULL);
+    seconds32 seconds{tv.tv_sec};
+    return time_point{seconds};
+}
+
+auto espchrono::millis_clock::now() noexcept -> time_point
+{
+    return time_point{std::chrono::floor<duration>(std::chrono::microseconds{esp_timer_get_time()})};
+}