Diff: TimeoutTimer.cpp

Revision:

29:b6af04b77a56

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TimeoutTimer.cpp	Mon Oct 27 13:42:26 2014 -0700
@@ -0,0 +1,66 @@
+/**
+ * ACKme WiConnect Host Library is licensed under the BSD licence: 
+ * 
+ * Copyright (c)2014 ACKme Networks.
+ * All rights reserved. 
+ * 
+ * Redistribution and use in source and binary forms, with or without modification, 
+ * are permitted provided that the following conditions are met: 
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, 
+ * this list of conditions and the following disclaimer. 
+ * 2. Redistributions in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation 
+ * and/or other materials provided with the distribution. 
+ * 3. The name of the author may not be used to endorse or promote products 
+ * derived from this software without specific prior written permission. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS AND ANY EXPRESS OR IMPLIED 
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * OF SUCH DAMAGE.
+ */
+
+#include "Wiconnect.h"
+#include "us_ticker_api.h"
+
+/*************************************************************************************************/
+TimeoutTimer::TimeoutTimer()
+{
+    _start = 0;
+    us_ticker_init();
+}
+
+/*************************************************************************************************/
+void TimeoutTimer::reset(void)
+{
+    _start = us_ticker_read();
+}
+
+/*************************************************************************************************/
+TimerTimeout TimeoutTimer::remainingMs(TimerTimeout timeoutMs)
+{
+    volatile TimerTimeout diff = readMs();
+    return (timeoutMs > diff) ? (timeoutMs - diff) : 0;
+}
+
+/*************************************************************************************************/
+TimerTimeout TimeoutTimer::readMs()
+{
+    volatile TimerTimeout now = us_ticker_read();
+    TimerTimeout remaining = (now > _start) ? (now - _start) : ((ULONG_MAX - _start) + now);
+    return remaining / 1000;
+}
+
+/*************************************************************************************************/
+bool TimeoutTimer::timedOut(TimerTimeout timeoutMs)
+{
+    volatile TimerTimeout now = us_ticker_read();
+    return ((now - _start) / 1000) > timeoutMs;
+}