Move PDP values out to a separate queue so the timestamps make sense etc

Change-Id: Iad5303c3446dc29f339f02af9c9c99dd7c75d8e0
diff --git a/y2014/wpilib/wpilib_interface.cc b/y2014/wpilib/wpilib_interface.cc
index cc634d9..13b2e7b 100644
--- a/y2014/wpilib/wpilib_interface.cc
+++ b/y2014/wpilib/wpilib_interface.cc
@@ -122,8 +122,7 @@
 
 class SensorReader {
  public:
-  SensorReader(::frc971::wpilib::PDPFetcher *pdp_fetcher)
-      : pdp_fetcher_(pdp_fetcher) {
+  SensorReader() {
     // Set it to filter out anything shorter than 1/4 of the minimum pulse width
     // we should ever see.
     encoder_filter_.SetPeriodNanoSeconds(
@@ -280,7 +279,7 @@
   }
 
   void RunIteration() {
-    ::frc971::wpilib::SendRobotState(my_pid_, ds_, pdp_fetcher_);
+    ::frc971::wpilib::SendRobotState(my_pid_, ds_);
 
     const auto &values = constants::GetValues();
 
@@ -440,7 +439,6 @@
 
   int32_t my_pid_;
   DriverStation *ds_;
-  ::frc971::wpilib::PDPFetcher *const pdp_fetcher_;
 
   ::std::unique_ptr<::frc971::wpilib::DMASynchronizer> dma_synchronizer_;
 
@@ -706,7 +704,7 @@
 
     ::frc971::wpilib::PDPFetcher pdp_fetcher;
     ::std::thread pdp_fetcher_thread(::std::ref(pdp_fetcher));
-    SensorReader reader(&pdp_fetcher);
+    SensorReader reader;
 
     // Create this first to make sure it ends up in one of the lower-numbered
     // FPGA slots so we can use it with DMA.