From 56b89f66b74b7d7c727f4e6997d9d0e8298e8535 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <woho@hottis.de>
Date: Fri, 4 Oct 2019 09:48:04 +0100
Subject: [PATCH] changes

---
 snippets/test1/test1.c    | 10 +++++++---
 snippets/test2/.gitignore |  1 +
 snippets/test2/test2.c    | 17 +++++++++++++++++
 3 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 snippets/test2/.gitignore
 create mode 100644 snippets/test2/test2.c

diff --git a/snippets/test1/test1.c b/snippets/test1/test1.c
index 5fd5938..fbd0f5a 100644
--- a/snippets/test1/test1.c
+++ b/snippets/test1/test1.c
@@ -131,6 +131,8 @@ void initCounter() {
 }
 
 int main (void) {
+  static uint32_t lastDiff = 0;
+
   init();
   initCounter();
 
@@ -139,8 +141,10 @@ int main (void) {
     pthread_cond_wait(&eventSignal, &eventMutex);
     pthread_mutex_unlock(&eventMutex);
 
-    double f = 1.0 / (((double) diff) / 1000000.0);
-
-    printf("%d %d %d %f\n", ec, counter, diff, f);
+    if (diff != lastDiff) {
+      lastDiff = diff;
+      double f = 1.0 / (((double) diff) / 1000000.0);
+      printf("%d %d %d %f\n", ec, counter, diff, f);
+    }
   }
 }
diff --git a/snippets/test2/.gitignore b/snippets/test2/.gitignore
new file mode 100644
index 0000000..180cf83
--- /dev/null
+++ b/snippets/test2/.gitignore
@@ -0,0 +1 @@
+test2
diff --git a/snippets/test2/test2.c b/snippets/test2/test2.c
new file mode 100644
index 0000000..4b72c1c
--- /dev/null
+++ b/snippets/test2/test2.c
@@ -0,0 +1,17 @@
+#include <stdint.h>
+#include <stdio.h>
+
+void main() {
+  uint8_t s = 25;
+  uint8_t c = 0;
+  uint8_t l = 0;
+  uint8_t d = 0;
+
+  for (uint8_t i = 0; i < 30; i++) {
+    c += 25;
+    d = c - l;
+    printf("%d %d %d %d\n", i, c, l, d);
+    l = c;
+  }
+}
+