1 files changed, 12 insertions, 2 deletions

diff --git a/app/pll.c b/app/pll.c
index 0c9ed80..43fb9ad 100644
--- a/app/pll.c
+++ b/app/pll.c
@@ -105,16 +105,26 @@ void pll_dispatch (uint64_t edge)
 
 void pll_set_offset (EPOCH epoch, uint64_t abs)
 {
+  int64_t new_offset;
+  int diff;
+
   /* Find nearest second to abs*/
   abs += pll_freq >> 2;
   abs -= phase;
   abs /= pll_freq;
 
-  offset = epoch.s - abs;
+  new_offset = epoch.s - abs;
+
+  if (new_offset != offset) {
+    diff = (int) (new_offset - offset);
+
+
+    printf ("PLL wallclock offset moved by %d\r\n", diff);
+    offset = new_offset;
+  }
 
   pll_valid = 1;
   time_known = 1;
-
 }