Semaphore + chart fixes; added simulation data

lib/obp60task/OBPRingBuffer.h

@@ -9,7 +9,7 @@
 template <typename T>
 class RingBuffer {
 private:
-    SemaphoreHandle_t locker;
+    mutable SemaphoreHandle_t bufLocker;
     std::vector<T> buffer;
     size_t capacity;
     size_t head; // Points to the next insertion position
@@ -24,13 +24,13 @@ private:
     String dataName; // Name of boat data in buffer
     String dataFmt; // Format of boat data in buffer
     int updFreq; // Update frequency in milliseconds
-    int smallest; // Value range of buffer: smallest value
-    int largest; // Value range of buffer: biggest value
+    T smallest; // Value range of buffer: smallest value
+    T largest; // Value range of buffer: biggest value
 
 public:
     RingBuffer(size_t size);
-    void setMetaData(String name, String format, int updateFrequency, int minValue, int maxValue); // Set meta data for buffer
-    bool getMetaData(String& name, String& format, int& updateFrequency, int& minValue, int& maxValue); // Get meta data of buffer
+    void setMetaData(String name, String format, int updateFrequency, T minValue, T maxValue); // Set meta data for buffer
+    bool getMetaData(String& name, String& format, int& updateFrequency, T& minValue, T& maxValue); // Get meta data of buffer
     void add(const T& value); // Add a new value to  buffer
     T get(size_t index) const; // Get value at specific position (0-based index from oldest to newest)
     T getFirst() const; // Get the first (oldest) value in buffer
@@ -45,13 +45,14 @@ public:
     T getMedian(size_t amount) const; // Get the median value of the last <amount> values of buffer
     size_t getCapacity() const; // Get the buffer capacity (maximum size)
     size_t getCurrentSize() const; // Get the current number of elements in buffer
-    size_t getLastIdx() const; // Get the last index of buffer
+    size_t getFirstIdx() const; // Get the index of oldest value in buffer
+    size_t getLastIdx() const; // Get the index of newest value in buffer
     bool isEmpty() const; // Check if buffer is empty
     bool isFull() const; // Check if buffer is full
     T getMinVal() const; // Get lowest possible value for buffer; used for initialized buffer data
     T getMaxVal() const; // Get highest possible value for buffer
     void clear(); // Clear buffer
-    T operator[](size_t index); // Operator[] for convenient access (same as get())
+    T operator[](size_t index) const; // Operator[] for convenient access (same as get())
     std::vector<T> getAllValues() const; // Get all current values as a vector
 };