Moved libftdi-specific code to PRHardware.cpp and added abstract PRHardware*() functions.

Added PRCommon.h.

src/PRDevice.h

@@ -29,9 +29,9 @@
  */
 
 #include "../include/pinproc.h"
+#include "PRCommon.h"
 #include "PRHardware.h"
 #include <queue>
-#include <ftdi.h>
 
 using namespace std;
 
@@ -39,13 +39,6 @@ using namespace std;
 #define maxDrivers (256)
 #define maxSwitchRules (256<<2) // 8 bits of switchNum indicies plus bits for debounced and state.
 
-#ifdef NDEBUG
-#  define DEBUG(block)
-#else
-#  define DEBUG(block) block
-#endif
-extern void PRLog(const char *format, ...);
-
 class PRDevice
 {
 public:
@@ -117,9 +110,6 @@ protected:
     queue<uint32_t> unrequestedDataQueue; /**< Queue of words received from the device that were not requested via RequestData().  Usually switch events. */
     queue<uint32_t> requestedDataQueue; /**< Queue of words received from the device as the result of a call to RequestData(). */
 
-    bool ftdiInitialized;
-    ftdi_context ftdic;
-
     uint8_t collected_bytes_fifo[FTDI_BUFFER_SIZE];
     int32_t collected_bytes_rd_addr;
     int32_t collected_bytes_wr_addr;