y2023/localizer/status.fbs

include "frc971/control_loops/drivetrain/drivetrain_status.fbs";
include "frc971/imu_reader/imu_failures.fbs";

namespace y2023.localizer;

enum RejectionReason : uint8 {
  // For some reason, the image timestamp indicates that the image was taken
  // in the future.
  IMAGE_FROM_FUTURE = 0,
  // The image was too old for the buffer of old state estimates that we
  // maintain.
  IMAGE_TOO_OLD = 1,
  // Message bridge is not yet connected, and so we can't get accurate
  // time offsets betwee nnodes.
  MESSAGE_BRIDGE_DISCONNECTED = 2,
  // The target ID does not exist.
  NO_SUCH_TARGET = 3,
}

table RejectionCount {
  error:RejectionReason (id: 0);
  count:uint (id: 1);
}

table CumulativeStatistics {
  total_accepted:int (id: 0);
  total_candidates:int (id: 1);
  rejection_reasons:[RejectionCount] (id: 2);
}

table ImuStatus {
  // Whether the IMU is zeroed or not.
  zeroed:bool (id: 0);
  // Whether the IMU zeroing is faulted or not.
  faulted_zero:bool (id: 1);
  zeroing:frc971.control_loops.drivetrain.ImuZeroerState (id: 2);
  // Offset between the pico clock and the pi clock, such that
  // pico_timestamp + pico_offset_ns = pi_timestamp
  pico_offset_ns:int64 (id: 3);
  // Error in the offset, if we assume that the pi/pico clocks are identical and
  // that there is a perfectly consistent latency between the two. Will be zero
  // for the very first cycle, and then referenced off of the initial offset
  // thereafter. If greater than zero, implies that the pico is "behind",
  // whether due to unusually large latency or due to clock drift.
  pico_offset_error_ns:int64 (id: 4);
  left_encoder:double (id: 5);
  right_encoder:double (id: 6);
  imu_failures:frc971.controls.ImuFailures (id: 7);
}

table Status {
  state: frc971.control_loops.drivetrain.LocalizerState (id: 0);
  down_estimator:frc971.control_loops.drivetrain.DownEstimatorState (id: 1);
  imu:ImuStatus (id: 2);
  // Statistics are per-camera, by camera index.
  statistics:[CumulativeStatistics] (id: 3);
}

root_type Status;