Adding y2018 joystick reader

Change-Id: I28611cb498e250e9a019eb2fb71f54afda6a4370
diff --git a/y2018/BUILD b/y2018/BUILD
new file mode 100644
index 0000000..d267b52
--- /dev/null
+++ b/y2018/BUILD
@@ -0,0 +1,47 @@
+load('/aos/downloader/downloader', 'aos_downloader')
+
+
+aos_downloader(
+  name = 'download',
+  start_srcs = [
+    ':joystick_reader',
+    '//aos:prime_start_binaries',
+    '//y2018/control_loops/drivetrain:drivetrain',
+  ],
+  srcs = [
+    '//aos:prime_binaries',
+  ],
+  restricted_to = ['//tools:roborio'],
+)
+
+aos_downloader(
+  name = 'download_stripped',
+  start_srcs = [
+   ':joystick_reader.stripped',
+    '//aos:prime_start_binaries_stripped',
+    '//y2018/control_loops/drivetrain:drivetrain.stripped',
+  ],
+  srcs = [
+    '//aos:prime_binaries_stripped',
+  ],
+  restricted_to = ['//tools:roborio'],
+)
+
+cc_binary(
+  name = 'joystick_reader',
+  srcs = [
+    'joystick_reader.cc',
+  ],
+  deps = [
+    '//aos/common/actions:action_lib',
+    '//aos/common/logging',
+    '//aos/common/util:log_interval',
+    '//aos/common:time',
+    '//aos/input:joystick_input',
+    '//aos/input:drivetrain_input',
+    '//aos/linux_code:init',
+    '//frc971/autonomous:auto_queue',
+    '//frc971/control_loops/drivetrain:drivetrain_queue',
+    '//y2018/control_loops/drivetrain:drivetrain_base',
+  ],
+)
diff --git a/y2018/joystick_reader.cc b/y2018/joystick_reader.cc
new file mode 100644
index 0000000..5e4adf7
--- /dev/null
+++ b/y2018/joystick_reader.cc
@@ -0,0 +1,98 @@
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "aos/common/actions/actions.h"
+#include "aos/common/input/driver_station_data.h"
+#include "aos/common/logging/logging.h"
+#include "aos/common/time.h"
+#include "aos/common/util/log_interval.h"
+#include "aos/input/drivetrain_input.h"
+#include "aos/input/joystick_input.h"
+#include "aos/linux_code/init.h"
+#include "frc971/control_loops/drivetrain/drivetrain.q.h"
+#include "y2018/control_loops/drivetrain/drivetrain_base.h"
+
+using ::frc971::control_loops::drivetrain_queue;
+
+using ::aos::input::driver_station::ButtonLocation;
+using ::aos::input::driver_station::ControlBit;
+using ::aos::input::driver_station::JoystickAxis;
+using ::aos::input::driver_station::POVLocation;
+using ::aos::input::DrivetrainInputReader;
+
+namespace y2018 {
+namespace input {
+namespace joysticks {
+
+std::unique_ptr<DrivetrainInputReader> drivetrain_input_reader_;
+
+class Reader : public ::aos::input::JoystickInput {
+ public:
+  Reader() {
+    drivetrain_input_reader_ = DrivetrainInputReader::Make(
+        DrivetrainInputReader::InputType::kSteeringWheel,
+        ::y2018::control_loops::drivetrain::GetDrivetrainConfig());
+  }
+
+  void RunIteration(const ::aos::input::driver_station::Data &data) override {
+    bool last_auto_running = auto_running_;
+    auto_running_ = data.GetControlBit(ControlBit::kAutonomous) &&
+                    data.GetControlBit(ControlBit::kEnabled);
+    if (auto_running_ != last_auto_running) {
+      if (auto_running_) {
+        StartAuto();
+      } else {
+        StopAuto();
+      }
+    }
+
+    if (!auto_running_) {
+      HandleDrivetrain(data);
+      HandleTeleop(data);
+    }
+
+    // Process any pending actions.
+    action_queue_.Tick();
+    was_running_ = action_queue_.Running();
+  }
+
+  void HandleDrivetrain(const ::aos::input::driver_station::Data &data) {
+    drivetrain_input_reader_->HandleDrivetrain(data);
+    robot_velocity_ = drivetrain_input_reader_->robot_velocity();
+  }
+
+  void HandleTeleop(const ::aos::input::driver_station::Data &data) {
+    if (!data.GetControlBit(ControlBit::kEnabled)) {
+      action_queue_.CancelAllActions();
+      LOG(DEBUG, "Canceling\n");
+    }
+  }
+
+ private:
+  void StartAuto() { LOG(INFO, "Starting auto mode\n"); }
+
+  void StopAuto() {
+    LOG(INFO, "Stopping auto mode\n");
+    action_queue_.CancelAllActions();
+  }
+
+  bool was_running_ = false;
+  bool auto_running_ = false;
+
+  double robot_velocity_ = 0.0;
+
+  ::aos::common::actions::ActionQueue action_queue_;
+};
+
+}  // namespace joysticks
+}  // namespace input
+}  // namespace y2018
+
+int main() {
+  ::aos::Init(-1);
+  ::y2018::input::joysticks::Reader reader;
+  reader.Run();
+  ::aos::Cleanup();
+}