Extend arm_time and start_time to nanosecond resolution

PandABlocks · Feb 16, 2024 · d92547c · d92547c
1 parent 1d3c940
commit d92547c
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/docs/capture.rst b/docs/capture.rst
@@ -148,7 +148,9 @@ sample_bytes      Number of bytes in one sample unless ``format`` is ``ASCII``.
 fields            Information about each captured field.
 ================= ==============================================================
 
-All timestamps are in `ISO 8601 UTC format <https://en.wikipedia.org/wiki/ISO_8601>`_, i.e. ``YYYY-MM-DDTHH:mm:ss.sssZ``.
+All timestamps are in
+`ISO 8601 UTC format <https://en.wikipedia.org/wiki/ISO_8601>`_ with nanosecond
+resolution, i.e. ``YYYY-MM-DDTHH:mm:ss.sssssssssZ``.
 
 ``start_time`` will be a hardware timestamp if a hardware time source which
 produces non-zero timestamps is selected, otherwise, it will be a system

diff --git a/server/prepare.c b/server/prepare.c
@@ -268,9 +268,9 @@ static void format_timestamp_message(
     struct tm tm;
     gmtime_r(&tsp->tv_sec, &tm);
     snprintf(timestamp_message, max_len,
-        "%4d-%02d-%02dT%02d:%02d:%02d.%03ldZ",
+        "%4d-%02d-%02dT%02d:%02d:%02d.%09ldZ",
         tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
-        tm.tm_hour, tm.tm_min, tm.tm_sec, tsp->tv_nsec / 1000000);
+        tm.tm_hour, tm.tm_min, tm.tm_sec, tsp->tv_nsec);
 }