christian b / GPS

Mbed library to handle GPS data reception and parsing

Dependents:   GPS_U-blox_NEO-6M_Code

Features

  • All positionning parameters are contained into a global data structure.
  • Automatic nema string parsing and data structure update.
    • GSA,GGA,VTG and RMC
  • Convert latitude and longitude to decimal value.
  • Converts latittude,longitude and altitude to ECEF coordinates.

Planed developement

  • Test library for RTOS use.
  • Complete the nema parsing decoders (couple of parameters are not parsed yet and not present in the data structure).
  • Add conversion tool to get ENU coordinates.

Diff: utils/CircularBuffer.h

Revision:
0:0c1aa5906cef
diff -r 000000000000 -r 0c1aa5906cef utils/CircularBuffer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/CircularBuffer.h	Wed Aug 06 01:37:39 2014 +0000
@@ -0,0 +1,34 @@
+template< class T >
+class CircularBuffer{
+    public:
+        CircularBuffer(int FIFOsize)
+        {
+            m_FIFO = new T[FIFOsize];
+            m_size = FIFOsize;
+            m_elementcount = 0;
+            m_outindex = 0;
+        };
+        ~CircularBuffer()
+        {
+            delete[] m_FIFO;          
+        };
+        T Get()
+        {
+            m_elementcount--;
+            return m_FIFO[(m_outindex++)%m_size];
+        };
+        void Put(T n)
+        {
+            m_elementcount++;
+            m_FIFO[(m_elementcount+m_outindex)%m_size] = n;
+        };
+        long GetElementCount()
+        {
+            return m_elementcount;
+        };
+    private:
+        long    m_size;
+        long    m_elementcount;
+        long    m_outindex;
+        T*      m_FIFO;
+    };
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