From 01adda7e31f990dcb69ab54e1529bbdcd153d8de Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwe@kingsome.cn>
Date: Tue, 8 Oct 2019 17:56:39 +0800
Subject: [PATCH] 1

---
 a8/timer.cc  | 2 +-
 a8/xtimer.cc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/a8/timer.cc b/a8/timer.cc
index 8aaf396..9a2585c 100644
--- a/a8/timer.cc
+++ b/a8/timer.cc
@@ -256,7 +256,7 @@ namespace a8
         if (!timer) {
             abort();
         }
-        long long remain_time = a8::XGetTickCount() - timer->expires;
+        long long remain_time = timer->expires - a8::XGetTickCount();
         return std::max(remain_time, (long long)0);
     }
 
diff --git a/a8/xtimer.cc b/a8/xtimer.cc
index 8b4dc23..3d7d692 100644
--- a/a8/xtimer.cc
+++ b/a8/xtimer.cc
@@ -267,7 +267,7 @@ namespace a8
         if (!timer) {
             abort();
         }
-        long long remain_time = get_tick_count_func_(context_) - timer->expires;
+        long long remain_time = timer->expires - get_tick_count_func_(context_);
         return std::max(remain_time, (long long)0);
     }