Make initial bot3 folder and structure.
Change-Id: I9b7e97fe8533b99a28ab15b4ade5e9ac95c7d836
diff --git a/bot3/wpilib/wpilib_interface.cc b/bot3/wpilib/wpilib_interface.cc
new file mode 100644
index 0000000..49be884
--- /dev/null
+++ b/bot3/wpilib/wpilib_interface.cc
@@ -0,0 +1,363 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+
+#include <thread>
+#include <mutex>
+#include <functional>
+
+#include "aos/common/logging/logging.h"
+#include "aos/common/logging/queue_logging.h"
+#include "aos/common/time.h"
+#include "aos/common/util/log_interval.h"
+#include "aos/common/util/phased_loop.h"
+#include "aos/common/util/wrapping_counter.h"
+#include "aos/common/stl_mutex.h"
+#include "aos/linux_code/init.h"
+#include "aos/common/messages/robot_state.q.h"
+
+#include "frc971/control_loops/control_loops.q.h"
+#include "bot3/control_loops/drivetrain/drivetrain.q.h"
+
+#include "frc971/wpilib/hall_effect.h"
+#include "frc971/wpilib/joystick_sender.h"
+#include "frc971/wpilib/loop_output_handler.h"
+#include "frc971/wpilib/buffered_solenoid.h"
+#include "frc971/wpilib/buffered_pcm.h"
+#include "frc971/wpilib/gyro_sender.h"
+#include "frc971/wpilib/dma_edge_counting.h"
+#include "frc971/wpilib/interrupt_edge_counting.h"
+#include "frc971/wpilib/encoder_and_potentiometer.h"
+#include "frc971/wpilib/logging.q.h"
+#include "bot3/control_loops/drivetrain/drivetrain.h"
+
+#include "Encoder.h"
+#include "Talon.h"
+#include "DriverStation.h"
+#include "AnalogInput.h"
+#include "Compressor.h"
+#include "Relay.h"
+#include "RobotBase.h"
+#include "dma.h"
+#include "ControllerPower.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+using ::aos::util::SimpleLogInterval;
+using ::bot3::control_loops::drivetrain_queue;
+using ::frc971::wpilib::DMAEncoderAndPotentiometer;
+using ::frc971::PotAndIndexPosition;
+using ::frc971::wpilib::InterruptEncoderAndPotentiometer;
+using ::frc971::wpilib::DMASynchronizer;
+using ::frc971::wpilib::BufferedPcm;
+using ::frc971::wpilib::LoopOutputHandler;
+using ::frc971::wpilib::JoystickSender;
+using ::frc971::wpilib::GyroSender;
+
+namespace bot3 {
+namespace wpilib {
+
+double drivetrain_translate(int32_t in) {
+ return static_cast<double>(in) /
+ (256.0 /*cpr*/ * 4.0 /*4x*/) *
+ ::bot3::control_loops::kDrivetrainEncoderRatio *
+ (4 /*wheel diameter*/ * 2.54 / 100.0 * M_PI);
+}
+
+// TODO(comran): Check/update the values below for the bot3.
+static const double kMaximumEncoderPulsesPerSecond =
+ 19500.0 /* free speed RPM */ * 12.0 / 56.0 /* belt reduction */ /
+ 60.0 /* seconds / minute */ * 256.0 /* CPR */ *
+ 4.0 /* index pulse = 1/4 cycle */;
+
+class SensorReader {
+ public:
+ SensorReader() {
+ // Set it to filter out anything shorter than 1/4 of the minimum pulse width
+ // we should ever see.
+ filter_.SetPeriodNanoSeconds(
+ static_cast<int>(1 / 4.0 / kMaximumEncoderPulsesPerSecond * 1e9 + 0.5));
+ }
+
+ void set_left_encoder(::std::unique_ptr<Encoder> left_encoder) {
+ left_encoder_ = ::std::move(left_encoder);
+ }
+
+ void set_right_encoder(::std::unique_ptr<Encoder> right_encoder) {
+ right_encoder_ = ::std::move(right_encoder);
+ }
+
+ // All of the DMA-related set_* calls must be made before this, and it doesn't
+ // hurt to do all of them.
+ // TODO(comran): Do we still need dma?
+ void set_dma(::std::unique_ptr<DMA> dma) {
+ dma_synchronizer_.reset(new DMASynchronizer(::std::move(dma)));
+ }
+
+ void operator()() {
+ LOG(INFO, "In sensor reader thread\n");
+ ::aos::SetCurrentThreadName("SensorReader");
+
+ my_pid_ = getpid();
+ ds_ = DriverStation::GetInstance();
+
+ dma_synchronizer_->Start();
+ LOG(INFO, "Things are now started\n");
+
+ ::aos::SetCurrentThreadRealtimePriority(kPriority);
+ while (run_) {
+ ::aos::time::PhasedLoopXMS(5, 4000);
+ RunIteration();
+ }
+ }
+
+ void RunIteration() {
+ {
+ auto new_state = ::aos::robot_state.MakeMessage();
+
+ new_state->reader_pid = my_pid_;
+ new_state->outputs_enabled = ds_->IsSysActive();
+ new_state->browned_out = ds_->IsSysBrownedOut();
+
+ new_state->is_3v3_active = ControllerPower::GetEnabled3V3();
+ new_state->is_5v_active = ControllerPower::GetEnabled5V();
+ new_state->voltage_3v3 = ControllerPower::GetVoltage3V3();
+ new_state->voltage_5v = ControllerPower::GetVoltage5V();
+
+ new_state->voltage_roborio_in = ControllerPower::GetInputVoltage();
+ new_state->voltage_battery = ds_->GetBatteryVoltage();
+
+ LOG_STRUCT(DEBUG, "robot_state", *new_state);
+
+ new_state.Send();
+ }
+
+ {
+ auto drivetrain_message = drivetrain_queue.position.MakeMessage();
+ drivetrain_message->right_encoder =
+ -drivetrain_translate(right_encoder_->GetRaw());
+ drivetrain_message->left_encoder =
+ drivetrain_translate(left_encoder_->GetRaw());
+
+ drivetrain_message.Send();
+ }
+
+ dma_synchronizer_->RunIteration();
+ }
+
+ void Quit() { run_ = false; }
+
+ private:
+ static const int kPriority = 30;
+ static const int kInterruptPriority = 55;
+
+ int32_t my_pid_;
+ DriverStation *ds_;
+
+ void CopyPotAndIndexPosition(
+ const DMAEncoderAndPotentiometer &encoder, PotAndIndexPosition *position,
+ ::std::function<double(int32_t)> encoder_translate,
+ ::std::function<double(double)> potentiometer_translate, bool reverse,
+ double potentiometer_offset) {
+ const double multiplier = reverse ? -1.0 : 1.0;
+ position->encoder =
+ multiplier * encoder_translate(encoder.polled_encoder_value());
+ position->pot = multiplier * potentiometer_translate(
+ encoder.polled_potentiometer_voltage()) +
+ potentiometer_offset;
+ position->latched_encoder =
+ multiplier * encoder_translate(encoder.last_encoder_value());
+ position->latched_pot =
+ multiplier *
+ potentiometer_translate(encoder.last_potentiometer_voltage()) +
+ potentiometer_offset;
+ position->index_pulses = encoder.index_posedge_count();
+ }
+
+ void CopyPotAndIndexPosition(
+ const InterruptEncoderAndPotentiometer &encoder,
+ PotAndIndexPosition *position,
+ ::std::function<double(int32_t)> encoder_translate,
+ ::std::function<double(double)> potentiometer_translate, bool reverse,
+ double potentiometer_offset) {
+ const double multiplier = reverse ? -1.0 : 1.0;
+ position->encoder =
+ multiplier * encoder_translate(encoder.encoder()->GetRaw());
+ position->pot = multiplier * potentiometer_translate(
+ encoder.potentiometer()->GetVoltage()) +
+ potentiometer_offset;
+ position->latched_encoder =
+ multiplier * encoder_translate(encoder.last_encoder_value());
+ position->latched_pot =
+ multiplier *
+ potentiometer_translate(encoder.last_potentiometer_voltage()) +
+ potentiometer_offset;
+ position->index_pulses = encoder.index_posedge_count();
+ }
+
+ ::std::unique_ptr<DMASynchronizer> dma_synchronizer_;
+
+ ::std::unique_ptr<Encoder> left_encoder_;
+ ::std::unique_ptr<Encoder> right_encoder_;
+
+ ::std::atomic<bool> run_{true};
+ DigitalGlitchFilter filter_;
+};
+
+class SolenoidWriter {
+ public:
+ SolenoidWriter(const ::std::unique_ptr<::frc971::wpilib::BufferedPcm> &pcm)
+ : pcm_(pcm) {}
+
+ void set_pressure_switch(::std::unique_ptr<DigitalSource> pressure_switch) {
+ pressure_switch_ = ::std::move(pressure_switch);
+ }
+
+ void set_compressor_relay(::std::unique_ptr<Relay> compressor_relay) {
+ compressor_relay_ = ::std::move(compressor_relay);
+ }
+
+ void operator()() {
+ ::aos::SetCurrentThreadName("Solenoids");
+ ::aos::SetCurrentThreadRealtimePriority(30);
+
+ while (run_) {
+ ::aos::time::PhasedLoopXMS(20, 1000);
+
+ ::aos::joystick_state.FetchLatest();
+
+ {
+ ::frc971::wpilib::PneumaticsToLog to_log;
+ {
+ const bool compressor_on = !pressure_switch_->Get();
+ to_log.compressor_on = compressor_on;
+ if (compressor_on) {
+ compressor_relay_->Set(Relay::kForward);
+ } else {
+ compressor_relay_->Set(Relay::kOff);
+ }
+ }
+
+ pcm_->Flush();
+ to_log.read_solenoids = pcm_->GetAll();
+ LOG_STRUCT(DEBUG, "pneumatics info", to_log);
+ }
+ }
+ }
+
+ void Quit() { run_ = false; }
+
+ private:
+ const ::std::unique_ptr<BufferedPcm> &pcm_;
+ ::std::unique_ptr<DigitalSource> pressure_switch_;
+ ::std::unique_ptr<Relay> compressor_relay_;
+
+ ::std::atomic<bool> run_{true};
+};
+
+class DrivetrainWriter : public LoopOutputHandler {
+ public:
+ void set_left_drivetrain_talon(::std::unique_ptr<Talon> t) {
+ left_drivetrain_talon_ = ::std::move(t);
+ }
+
+ void set_right_drivetrain_talon(::std::unique_ptr<Talon> t) {
+ right_drivetrain_talon_ = ::std::move(t);
+ }
+
+ private:
+ virtual void Read() override {
+ ::bot3::control_loops::drivetrain_queue.output.FetchAnother();
+ }
+
+ virtual void Write() override {
+ auto &queue = ::bot3::control_loops::drivetrain_queue.output;
+ LOG_STRUCT(DEBUG, "will output", *queue);
+ left_drivetrain_talon_->Set(queue->left_voltage / 12.0);
+ right_drivetrain_talon_->Set(-queue->right_voltage / 12.0);
+ }
+
+ virtual void Stop() override {
+ LOG(WARNING, "drivetrain output too old\n");
+ left_drivetrain_talon_->Disable();
+ right_drivetrain_talon_->Disable();
+ }
+
+ ::std::unique_ptr<Talon> left_drivetrain_talon_;
+ ::std::unique_ptr<Talon> right_drivetrain_talon_;
+};
+
+// TODO(brian): Replace this with ::std::make_unique once all our toolchains
+// have support.
+template <class T, class... U>
+std::unique_ptr<T> make_unique(U &&... u) {
+ return std::unique_ptr<T>(new T(std::forward<U>(u)...));
+}
+
+class WPILibRobot : public RobotBase {
+ public:
+ ::std::unique_ptr<Encoder> encoder(int index) {
+ return make_unique<Encoder>(10 + index * 2, 11 + index * 2, false,
+ Encoder::k4X);
+ }
+ virtual void StartCompetition() {
+ ::aos::InitNRT();
+ ::aos::SetCurrentThreadName("StartCompetition");
+
+ JoystickSender joystick_sender;
+ ::std::thread joystick_thread(::std::ref(joystick_sender));
+
+ SensorReader reader;
+ LOG(INFO, "Creating the reader\n");
+
+ // TODO(comran): Find talon/encoder numbers.
+ reader.set_left_encoder(encoder(2));
+ reader.set_right_encoder(encoder(3));
+ reader.set_dma(make_unique<DMA>());
+ ::std::thread reader_thread(::std::ref(reader));
+ GyroSender gyro_sender;
+ ::std::thread gyro_thread(::std::ref(gyro_sender));
+
+ DrivetrainWriter drivetrain_writer;
+ drivetrain_writer.set_left_drivetrain_talon(
+ ::std::unique_ptr<Talon>(new Talon(8)));
+ drivetrain_writer.set_right_drivetrain_talon(
+ ::std::unique_ptr<Talon>(new Talon(0)));
+ ::std::thread drivetrain_writer_thread(::std::ref(drivetrain_writer));
+
+ ::std::unique_ptr<::frc971::wpilib::BufferedPcm> pcm(
+ new ::frc971::wpilib::BufferedPcm());
+ SolenoidWriter solenoid_writer(pcm);
+ solenoid_writer.set_pressure_switch(make_unique<DigitalInput>(9));
+ solenoid_writer.set_compressor_relay(make_unique<Relay>(0));
+ ::std::thread solenoid_thread(::std::ref(solenoid_writer));
+
+ // Wait forever. Not much else to do...
+ PCHECK(select(0, nullptr, nullptr, nullptr, nullptr));
+
+ LOG(ERROR, "Exiting WPILibRobot\n");
+
+ joystick_sender.Quit();
+ joystick_thread.join();
+ reader.Quit();
+ reader_thread.join();
+ gyro_sender.Quit();
+ gyro_thread.join();
+
+ drivetrain_writer.Quit();
+ drivetrain_writer_thread.join();
+ solenoid_writer.Quit();
+ solenoid_thread.join();
+
+ ::aos::Cleanup();
+ }
+};
+
+} // namespace wpilib
+} // namespace bot3
+
+
+START_ROBOT_CLASS(::bot3::wpilib::WPILibRobot);