From ca604f428dc0d0920d63d0b71c6a8b9a7bb8dffe Mon Sep 17 00:00:00 2001
From: higgx2 <45871759+higgx2@users.noreply.github.com>
Date: Mon, 23 May 2022 15:13:43 +0200
Subject: [PATCH] hdf5 export: Adding timestamps values to each group

HDF5 export was missing timestamps for the master channel(s) if single_time_base equals False.
---
 asammdf/mdf.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/asammdf/mdf.py b/asammdf/mdf.py
index 72c6f3273..1d691bf54 100644
--- a/asammdf/mdf.py
+++ b/asammdf/mdf.py
@@ -1411,6 +1411,23 @@ def export(
                             group.attrs["master"] = (
                                 self.groups[group_index].channels[master_index].name
                             )
+                            master = self.get(group.attrs["master"], group_index)
+                            if reduce_memory_usage:
+                                master.timestamps = downcast(master.timestamps)
+                            if compression:
+                                dataset = group.create_dataset(
+                                    group.attrs["master"], data=master.timestamps, compression=compression
+                                )
+                            else:
+                                dataset = group.create_dataset(
+                                    group.attrs["master"], data=master.timestamps, dtype=master.timestamps.dtype
+                                )
+                            unit = master.unit.replace("\0", "")
+                            if unit:
+                                dataset.attrs["unit"] = unit
+                            comment = master.comment.replace("\0", "")
+                            if comment:
+                                dataset.attrs["comment"] = comment
 
                         channels = [
                             (None, gp_index, ch_index)