From 81cff65c57ccecf96960dbace9ab663ba3bbf857 Mon Sep 17 00:00:00 2001
From: Koen Zandberg <koen@bergzand.net>
Date: Wed, 16 May 2018 16:49:03 +0200
Subject: [PATCH] tests/xtimer_now64: Start time measure after print
Printing can take a lot of time over a serial connection. On the atmega
board it takes more than 2 ms, skewing the first measurement over the
threshold value and causing a test failure. This moves the print
statement above the first measumerement to prevent the skew.
---
tests/xtimer_now64_continuity/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/xtimer_now64_continuity/main.c b/tests/xtimer_now64_continuity/main.c
index 79f2cdefc4..2b4b117c6b 100644
--- a/tests/xtimer_now64_continuity/main.c
+++ b/tests/xtimer_now64_continuity/main.c
@@ -34,8 +34,8 @@ int main(void)
uint64_t diff_min = UINT64_MAX;
uint64_t diff_max = 0;
uint64_t diff_sum = 0;
- xtimer_ticks64_t before = xtimer_now64();
print_str("[START]\n");
+ xtimer_ticks64_t before = xtimer_now64();
while(--n) {
xtimer_ticks64_t now = xtimer_now64();
xtimer_ticks64_t diff = xtimer_diff64(now, before);
--
GitLab