blob: 83d431c4de51b6c3655bf31d674c3c7dad341e48 [file] [log] [blame]
#include "absl/flags/flag.h"
#include "ctre/phoenix/cci/Diagnostics_CCI.h"
#include "ctre/phoenix6/TalonFX.hpp"
#include "aos/events/shm_event_loop.h"
#include "aos/init.h"
#include "frc971/constants/constants_sender_lib.h"
#include "frc971/control_loops/control_loops_generated.h"
#include "frc971/control_loops/swerve/swerve_drivetrain_can_position_static.h"
#include "frc971/control_loops/swerve/swerve_drivetrain_position_static.h"
#include "frc971/queues/gyro_generated.h"
#include "frc971/wpilib/can_sensor_reader.h"
#include "frc971/wpilib/joystick_sender.h"
#include "frc971/wpilib/pdp_fetcher.h"
#include "frc971/wpilib/sensor_reader.h"
#include "frc971/wpilib/swerve/swerve_drivetrain_writer.h"
#include "frc971/wpilib/talonfx.h"
#include "frc971/wpilib/wpilib_robot_base.h"
#include "y2024_swerve/constants.h"
#include "y2024_swerve/constants/constants_generated.h"
ABSL_FLAG(bool, ctre_diag_server, false,
"If true, enable the diagnostics server for interacting with "
"devices on the CAN bus using Phoenix Tuner");
using frc971::wpilib::CANSensorReader;
using frc971::wpilib::TalonFX;
using frc971::wpilib::swerve::DrivetrainWriter;
using frc971::wpilib::swerve::SwerveModule;
namespace drivetrain = frc971::control_loops::drivetrain;
namespace y2024_swerve::wpilib {
namespace {
template <class T>
T value_or_exit(std::optional<T> optional) {
CHECK(optional.has_value());
return optional.value();
}
constexpr double kMaxFastEncoderPulsesPerSecond = std::max({
constants::Values::kMaxDrivetrainEncoderPulsesPerSecond(),
});
static_assert(kMaxFastEncoderPulsesPerSecond <= 1300000,
"fast encoders are too fast");
} // namespace
class SensorReader : public ::frc971::wpilib::SensorReader {
public:
SensorReader(aos::ShmEventLoop *event_loop,
std::shared_ptr<const constants::Values> values,
const Constants *robot_constants,
frc971::wpilib::swerve::SwerveModules modules)
: ::frc971::wpilib::SensorReader(event_loop),
values_(values),
robot_constants_(robot_constants),
drivetrain_position_sender_(
event_loop
->MakeSender<frc971::control_loops::swerve::PositionStatic>(
"/drivetrain")),
modules_(modules),
gyro_sender_(event_loop->MakeSender<::frc971::sensors::GyroReading>(
"/drivetrain")) {
UpdateFastEncoderFilterHz(kMaxFastEncoderPulsesPerSecond);
event_loop->SetRuntimeAffinity(aos::MakeCpusetFromCpus({0}));
}
void Start() override { AddToDMA(&imu_yaw_rate_reader_); }
void set_yaw_rate_input(::std::unique_ptr<frc::DigitalInput> sensor) {
imu_yaw_rate_input_ = ::std::move(sensor);
imu_yaw_rate_reader_.set_input(imu_yaw_rate_input_.get());
}
void RunIteration() override {
{
auto builder = drivetrain_position_sender_.MakeStaticBuilder();
auto swerve_position_constants =
robot_constants_->common()->swerve_positions_constants();
modules_.front_left->PopulatePosition(builder->add_front_left(),
swerve_position_constants);
modules_.front_right->PopulatePosition(builder->add_front_right(),
swerve_position_constants);
modules_.back_left->PopulatePosition(builder->add_back_left(),
swerve_position_constants);
modules_.back_right->PopulatePosition(builder->add_back_right(),
swerve_position_constants);
builder.CheckOk(builder.Send());
}
{
auto builder = gyro_sender_.MakeBuilder();
::frc971::sensors::GyroReading::Builder gyro_reading_builder =
builder.MakeBuilder<::frc971::sensors::GyroReading>();
// +/- 2000 deg / sec
constexpr double kMaxVelocity = 4000; // degrees / second
constexpr double kVelocityRadiansPerSecond =
kMaxVelocity / 360 * (2.0 * M_PI);
// Only part of the full range is used to prevent being 100% on or off.
constexpr double kScaledRangeLow = 0.1;
constexpr double kScaledRangeHigh = 0.9;
constexpr double kPWMFrequencyHz = 200;
double velocity_duty_cycle =
imu_yaw_rate_reader_.last_width() * kPWMFrequencyHz;
constexpr double kDutyCycleScale =
1 / (kScaledRangeHigh - kScaledRangeLow);
// scale from 0.1 - 0.9 to 0 - 1
double rescaled_velocity_duty_cycle =
(velocity_duty_cycle - kScaledRangeLow) * kDutyCycleScale;
if (!std::isnan(rescaled_velocity_duty_cycle)) {
gyro_reading_builder.add_velocity((rescaled_velocity_duty_cycle - 0.5) *
kVelocityRadiansPerSecond);
}
builder.CheckOk(builder.Send(gyro_reading_builder.Finish()));
}
}
void set_front_left_encoder(std::unique_ptr<frc::Encoder> encoder,
std::unique_ptr<frc::DigitalInput> absolute_pwm) {
fast_encoder_filter_.Add(encoder.get());
modules_.front_left->set_rotation_encoder(std::move(encoder),
std::move(absolute_pwm));
}
void set_front_right_encoder(
std::unique_ptr<frc::Encoder> encoder,
std::unique_ptr<frc::DigitalInput> absolute_pwm) {
fast_encoder_filter_.Add(encoder.get());
modules_.front_right->set_rotation_encoder(std::move(encoder),
std::move(absolute_pwm));
}
void set_back_left_encoder(std::unique_ptr<frc::Encoder> encoder,
std::unique_ptr<frc::DigitalInput> absolute_pwm) {
fast_encoder_filter_.Add(encoder.get());
modules_.back_left->set_rotation_encoder(std::move(encoder),
std::move(absolute_pwm));
}
void set_back_right_encoder(std::unique_ptr<frc::Encoder> encoder,
std::unique_ptr<frc::DigitalInput> absolute_pwm) {
fast_encoder_filter_.Add(encoder.get());
modules_.back_right->set_rotation_encoder(std::move(encoder),
std::move(absolute_pwm));
}
private:
std::shared_ptr<const constants::Values> values_;
const Constants *robot_constants_;
aos::Sender<frc971::control_loops::swerve::PositionStatic>
drivetrain_position_sender_;
frc971::wpilib::swerve::SwerveModules modules_;
std::unique_ptr<frc::DigitalInput> imu_yaw_rate_input_;
frc971::wpilib::DMAPulseWidthReader imu_yaw_rate_reader_;
::aos::Sender<::frc971::sensors::GyroReading> gyro_sender_;
};
class WPILibRobot : public ::frc971::wpilib::WPILibRobotBase {
public:
::std::unique_ptr<frc::Encoder> make_encoder(int index) {
return std::make_unique<frc::Encoder>(10 + index * 2, 11 + index * 2, false,
frc::Encoder::k4X);
}
void Run() override {
std::shared_ptr<const constants::Values> values =
std::make_shared<const constants::Values>(constants::MakeValues());
aos::FlatbufferDetachedBuffer<aos::Configuration> config =
aos::configuration::ReadConfig("aos_config.json");
frc971::constants::WaitForConstants<y2024_swerve::Constants>(
&config.message());
::aos::ShmEventLoop constant_fetcher_event_loop(&config.message());
frc971::constants::ConstantsFetcher<Constants> constants_fetcher(
&constant_fetcher_event_loop);
const Constants *robot_constants = &constants_fetcher.constants();
AddLoop(&constant_fetcher_event_loop);
::aos::ShmEventLoop joystick_sender_event_loop(&config.message());
::frc971::wpilib::JoystickSender joystick_sender(
&joystick_sender_event_loop);
AddLoop(&joystick_sender_event_loop);
::aos::ShmEventLoop pdp_fetcher_event_loop(&config.message());
::frc971::wpilib::PDPFetcher pdp_fetcher(&pdp_fetcher_event_loop);
AddLoop(&pdp_fetcher_event_loop);
std::vector<ctre::phoenix6::BaseStatusSignal *> signals_registry;
std::vector<std::shared_ptr<TalonFX>> falcons;
// TODO(max): Change the CanBus names with TalonFX software.
frc971::wpilib::swerve::SwerveModules modules{
.front_left = std::make_shared<SwerveModule>(
frc971::wpilib::TalonFXParams{6, true},
frc971::wpilib::TalonFXParams{5, false}, "Drivetrain Bus",
&signals_registry,
constants::Values::kDrivetrainStatorCurrentLimit(),
constants::Values::kDrivetrainSupplyCurrentLimit()),
.front_right = std::make_shared<SwerveModule>(
frc971::wpilib::TalonFXParams{3, true},
frc971::wpilib::TalonFXParams{4, false}, "Drivetrain Bus",
&signals_registry,
constants::Values::kDrivetrainStatorCurrentLimit(),
constants::Values::kDrivetrainSupplyCurrentLimit()),
.back_left = std::make_shared<SwerveModule>(
frc971::wpilib::TalonFXParams{7, true},
frc971::wpilib::TalonFXParams{8, false}, "Drivetrain Bus",
&signals_registry,
constants::Values::kDrivetrainStatorCurrentLimit(),
constants::Values::kDrivetrainSupplyCurrentLimit()),
.back_right = std::make_shared<SwerveModule>(
frc971::wpilib::TalonFXParams{2, true},
frc971::wpilib::TalonFXParams{1, false}, "Drivetrain Bus",
&signals_registry,
constants::Values::kDrivetrainStatorCurrentLimit(),
constants::Values::kDrivetrainSupplyCurrentLimit())};
// Thread 1
aos::ShmEventLoop can_sensor_reader_event_loop(&config.message());
can_sensor_reader_event_loop.set_name("CANSensorReader");
modules.PopulateFalconsVector(&falcons);
aos::Sender<frc971::control_loops::swerve::CanPositionStatic>
can_position_sender =
can_sensor_reader_event_loop
.MakeSender<frc971::control_loops::swerve::CanPositionStatic>(
"/drivetrain");
CANSensorReader can_sensor_reader(
&can_sensor_reader_event_loop, std::move(signals_registry), falcons,
[this, falcons, modules,
&can_position_sender](ctre::phoenix::StatusCode status) {
// TODO(max): use status properly in the flatbuffer.
(void)status;
aos::Sender<frc971::control_loops::swerve::CanPositionStatic>::
StaticBuilder builder = can_position_sender.MakeStaticBuilder();
for (auto falcon : falcons) {
falcon->RefreshNontimesyncedSignals();
}
const frc971::wpilib::swerve::SwerveModule::ModuleGearRatios
gear_ratios{
.rotation = constants::Values::kRotationModuleRatio(),
.translation = constants::Values::kTranslationModuleRatio()};
modules.front_left->PopulateCanPosition(builder->add_front_left(),
gear_ratios);
modules.front_right->PopulateCanPosition(builder->add_front_right(),
gear_ratios);
modules.back_left->PopulateCanPosition(builder->add_back_left(),
gear_ratios);
modules.back_right->PopulateCanPosition(builder->add_back_right(),
gear_ratios);
builder.CheckOk(builder.Send());
});
AddLoop(&can_sensor_reader_event_loop);
// Thread 2
// Setup CAN
if (!absl::GetFlag(FLAGS_ctre_diag_server)) {
c_Phoenix_Diagnostics_SetSecondsToStart(-1);
c_Phoenix_Diagnostics_Dispose();
}
ctre::phoenix::platform::can::CANComm_SetRxSchedPriority(
constants::Values::kDrivetrainRxPriority, true, "Drivetrain Bus");
ctre::phoenix::platform::can::CANComm_SetTxSchedPriority(
constants::Values::kDrivetrainTxPriority, true, "Drivetrain Bus");
aos::ShmEventLoop drivetrain_writer_event_loop(&config.message());
drivetrain_writer_event_loop.set_name("DrivetrainWriter");
DrivetrainWriter drivetrain_writer(
&drivetrain_writer_event_loop,
constants::Values::kDrivetrainWriterPriority, 12);
drivetrain_writer.set_talonfxs(modules);
AddLoop(&drivetrain_writer_event_loop);
// Thread 3
aos::ShmEventLoop sensor_reader_event_loop(&config.message());
sensor_reader_event_loop.set_name("SensorReader");
SensorReader sensor_reader(&sensor_reader_event_loop, values,
robot_constants, modules);
sensor_reader.set_front_left_encoder(
make_encoder(3), std::make_unique<frc::DigitalInput>(3));
sensor_reader.set_front_right_encoder(
make_encoder(1), std::make_unique<frc::DigitalInput>(1));
sensor_reader.set_back_left_encoder(make_encoder(4),
std::make_unique<frc::DigitalInput>(4));
sensor_reader.set_back_right_encoder(
make_encoder(0), std::make_unique<frc::DigitalInput>(0));
sensor_reader.set_yaw_rate_input(std::make_unique<frc::DigitalInput>(25));
AddLoop(&sensor_reader_event_loop);
RunLoops();
}
};
} // namespace y2024_swerve::wpilib
AOS_ROBOT_CLASS(::y2024_swerve::wpilib::WPILibRobot)