From fbd01e717b56e9a4c76cc2fe58c757bbf410dd4c Mon Sep 17 00:00:00 2001
From: 0xFEEDC0DE64 <daniel@brunner.ninja>
Date: Thu, 15 Apr 2021 21:45:31 +0200
Subject: [PATCH] Added espchrono_impl.cpp

---
 CMakeLists.txt         |  1 +
 src/espchrono_impl.cpp | 25 +++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 src/espchrono_impl.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0cd2546..7dbc3ad 100644
--- a/CMakeLists.txt
+++ b/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)
diff --git a/src/espchrono_impl.cpp b/src/espchrono_impl.cpp
new file mode 100644
index 0000000..48d4509
--- /dev/null
+++ b/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()})};
+}