From 43d608d833cdb41b4e4bc6467053065eecb89421 Mon Sep 17 00:00:00 2001
From: Andrej Babic <andrej.babic@psi.ch>
Date: Wed, 15 Apr 2020 17:38:47 +0200
Subject: [PATCH] Fix lost pulse ids statistics

---
 sf-buffer/src/sf_buffer.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sf-buffer/src/sf_buffer.cpp b/sf-buffer/src/sf_buffer.cpp
index 06e7c82..cf0eb8f 100644
--- a/sf-buffer/src/sf_buffer.cpp
+++ b/sf-buffer/src/sf_buffer.cpp
@@ -108,7 +108,10 @@ int main (int argc, char *argv[]) {
             n_frames_with_missing_packets++;
         }
 
-        n_missed_frames += (pulse_id - last_pulse_id) - 1;
+        if (last_pulse_id>0) {
+            n_missed_frames += (pulse_id - last_pulse_id) - 1;
+        }
+        last_pulse_id = pulse_id;
 
         if (n_stat_out == 500) {
             cout << "device_name " << device_name;