From 42bb617841294c8ea2e338258ca9d5d824c82f7e Mon Sep 17 00:00:00 2001
From: Michael Zillgith <michael.zillgith@mz-automation.de>
Date: Tue, 23 Feb 2021 17:14:46 +0100
Subject: [PATCH] - HAL: implemented Hal_setTimeInNs for windows

---
 hal/inc/hal_time.h    |  8 ++++++++
 hal/time/win32/time.c | 18 ++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/hal/inc/hal_time.h b/hal/inc/hal_time.h
index 52782959..7d5a942c 100644
--- a/hal/inc/hal_time.h
+++ b/hal/inc/hal_time.h
@@ -71,6 +71,14 @@ Hal_getTimeInMs(void);
 PAL_API nsSinceEpoch
 Hal_getTimeInNs(void);
 
+/**
+* Set the system time from ns time
+*
+* The time value returned as 64-bit unsigned integer should represent the nanoseconds
+* since the UNIX epoch (1970/01/01 00:00 UTC).
+*
+* \return true on success, otherwise false
+*/
 PAL_API bool
 Hal_setTimeInNs(nsSinceEpoch nsTime);
 
diff --git a/hal/time/win32/time.c b/hal/time/win32/time.c
index 17eaf65d..1e7adfe3 100644
--- a/hal/time/win32/time.c
+++ b/hal/time/win32/time.c
@@ -57,3 +57,21 @@ Hal_getTimeInNs()
 
 	return nsTime;
 }
+
+bool
+Hal_setTimeInNs(nsSinceEpoch nsTime)
+{
+    uint64_t t = (nsTime / 100ULL) + 116444736000000000ULL;                               
+
+    FILETIME ft;
+
+	ft.dwLowDateTime = (uint32_t)(t & 0xffffffff);
+	ft.dwHighDateTime = (uint32_t)(t >> 32);
+
+    SYSTEMTIME st;
+
+    FileTimeToSystemTime(&ft, &st);
+
+    return SetSystemTime(&st);
+}
+