Disable global time on RPi

humamamouri · Mar 26, 2020 · 43294e9 · 43294e9
1 parent 9c25ae8
commit 43294e9
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/CMake/unix_config.cmake b/CMake/unix_config.cmake
@@ -10,6 +10,7 @@ macro(os_set_flags)
     if(${MACHINE} MATCHES "arm-linux-gnueabihf")
         set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mfpu=neon -mfloat-abi=hard -ftree-vectorize -latomic")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon -mfloat-abi=hard -ftree-vectorize -latomic")
+        add_definitions(-DRASPBERRY_PI)
     elseif(${MACHINE} MATCHES "aarch64-linux-gnu")
         set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -mstrict-align -ftree-vectorize")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mstrict-align -ftree-vectorize")

diff --git a/src/ds5/ds5-device.cpp b/src/ds5/ds5-device.cpp
@@ -901,7 +901,12 @@ namespace librealsense
         //{
         //    throw not_implemented_exception("device time not supported for backend.");
         //}
-
+
+#ifdef RASPBERRY_PI
+        // TODO: This is temporary work-around since global timestamp seems to compromise RPi stability
+        using namespace std::chrono;
+        return duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
+#else
         if (!_hw_monitor)
             throw wrong_api_call_sequence_exception("_hw_monitor is not initialized yet");
 
@@ -916,6 +921,7 @@ namespace librealsense
         uint32_t dt = *(uint32_t*)res.data();
         double ts = dt * TIMESTAMP_USEC_TO_MSEC;
         return ts;
+#endif
     }
 
     std::shared_ptr<synthetic_sensor> ds5u_device::create_ds5u_depth_device(std::shared_ptr<context> ctx,