This is the latest WPILib src, VisionSample2013, cRIO image, ... pulled down from firstforge.wpi.edu.
There might be risks in using the top of tree rather than an official release, but the commit messages do mention fixes for some deadlocks and race conditions.
git-svn-id: https://robotics.mvla.net/svn/frc971/2013/trunk/src@4066 f308d9b7-e957-4cde-b6ac-9a88185e7312
diff --git a/azaleasource/WPILibCProgramming/trunk/WPILib/CounterBase.h b/azaleasource/WPILibCProgramming/trunk/WPILib/CounterBase.h
new file mode 100644
index 0000000..93e1da5
--- /dev/null
+++ b/azaleasource/WPILibCProgramming/trunk/WPILib/CounterBase.h
@@ -0,0 +1,31 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2008. All Rights Reserved. */
+/* Open Source Software - may be modified and shared by FRC teams. The code */
+/* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib. */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CPPCOUNTER_BASE_H_
+#define CPPCOUNTER_BASE_H_
+
+/**
+ * Interface for counting the number of ticks on a digital input channel.
+ * Encoders, Gear tooth sensors, and counters should all subclass this so it can be used to
+ * build more advanced classes for control and driving.
+ */
+class CounterBase
+{
+public:
+ typedef enum {k1X, k2X, k4X} EncodingType;
+
+ virtual ~CounterBase() {}
+ virtual void Start() = 0;
+ virtual INT32 Get() = 0;
+ virtual void Reset() = 0;
+ virtual void Stop() = 0;
+ virtual double GetPeriod() = 0;
+ virtual void SetMaxPeriod(double maxPeriod) = 0;
+ virtual bool GetStopped() = 0;
+ virtual bool GetDirection() = 0;
+};
+
+#endif