From 70eadd26d747c10e6c985b44cdd14c7df408d873 Mon Sep 17 00:00:00 2001
From: gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>
Date: Tue, 12 Nov 2013 11:19:51 +0000
Subject: git-svn-id:
 svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6468
 35acf78f-673a-0410-8e92-d51de3d6d3f4

---
 os/nil/include/nil.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'os')

diff --git a/os/nil/include/nil.h b/os/nil/include/nil.h
index b6ef8436d..7ba088dac 100644
--- a/os/nil/include/nil.h
+++ b/os/nil/include/nil.h
@@ -719,6 +719,17 @@ typedef struct {
 #define chVTGetSystemTimeX() port_timer_get_time()
 #endif
 
+/**
+ * @brief   Returns the elapsed time since the specified start time.
+ *
+ * @param[in] start     start time
+ * @return              The elapsed time.
+ *
+ * @xclass
+ */
+#define chVTTimeElapsedSinceX(start)                                        \
+  ((systime_t)(chVTGetSystemTimeX() - start))
+
 /**
  * @brief   Checks if the specified time is within the specified time window.
  * @note    When start==end then the function returns always true because the
-- 
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