communicator.hpp

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#pragma once
 
#include <Arduino.h>
#include <FlexCAN_T4.h>
 
#include <string>
 
#include "../../CAN_IDs.h"
#include "comm/utils.hpp"
#include "debugUtils.hpp"
#include "enum_utils.hpp"
#include "model/systemData.hpp"
#include "utils.hpp"
#include "../utils.hpp"
 
inline std::array<Code, 7> fifoCodes = {{{0, DASH_ID},
                                         {1, BAMO_RESPONSE_ID},
                                         {2, AS_CU_EMERGENCY_SIGNAL},
                                         {3, MISSION_FINISHED},
                                         {4, AS_CU_ID},
                                         {5, RES_STATE},
                                         {6, RES_READY}}};
 
inline std::array<Code, 1> fifoExtendedCodes = {{
    {7, STEERING_ID},
}};
 
class Communicator {
private:
  // Static FlexCAN_T4 object for CAN2 interface with RX and TX buffer sizes specified
  inline static FlexCAN_T4<CAN3, RX_SIZE_256, TX_SIZE_16> can2;
 
public:
  // Pointer to SystemData instance for storing system-related data
  inline static SystemData *_systemData = nullptr;
 
  explicit Communicator(SystemData *systemdata);
 
  void init();
 
  static void parse_message(const CAN_message_t &msg);
 
  template <std::size_t N>
  static int send_message(unsigned len, const std::array<uint8_t, N> &buffer, unsigned id);
 
  static void pc_callback(const uint8_t *buf);
 
  static void res_state_callback(const uint8_t *buf);
 
  static void res_ready_callback();
 
  static void bamocar_callback(const uint8_t *buf);
 
  static void steering_callback();
 
  static int publish_state(int state_id);
 
  static int publish_mission(int mission_id);
  static int publish_soc(uint8_t soc);
  static int publish_asms_on(bool asms_on);
  static int publish_debug_morning_log(const SystemData &system_data, uint8_t sate,
                                       uint8_t state_checkup);
 
  static int publish_rpm();
};
 
inline Communicator::Communicator(SystemData *system_data) { _systemData = system_data; }
 
void Communicator::init() {
  can2.begin();
  can2.setBaudRate(500000);
 
  can2.enableFIFO();
  can2.enableFIFOInterrupt();
 
  can2.setFIFOFilter(REJECT_ALL);
  for (auto &fifoCode : fifoCodes) can2.setFIFOFilter(fifoCode.key, fifoCode.code, STD);
 
  for (auto &fifoExtendedCode : fifoExtendedCodes)
    can2.setFIFOFilter(fifoExtendedCode.key, fifoExtendedCode.code, EXT);
 
  can2.onReceive(FIFO, parse_message);
 
  can2.mailboxStatus();
}
 
inline void Communicator::res_state_callback(const uint8_t *buf) {
  bool emg_stop1 = buf[0] & 0x01;
  bool emg_stop2 = buf[3] >> 7 & 0x01;
  bool go_switch = (buf[0] >> 1) & 0x01;
  bool go_button = (buf[0] >> 2) & 0x01;
 
  if (go_button || go_switch)
    _systemData->r2d_logics_.process_go_signal();
  else if (!(emg_stop1 || emg_stop2)) { // If both are false 
    _systemData->failure_detection_.emergency_signal_ = true;
  }
 
  _systemData->failure_detection_.radio_quality_ = buf[6];
  bool signal_loss = (buf[7] >> 6) & 0x01;
  if (!signal_loss) {
    _systemData->failure_detection_.res_signal_loss_timestamp_
        .reset();  // making sure we dont receive only signal loss for the defined time interval
                   // DEBUG_PRINT("SIGNAL OKAY");
  } else {
    // Too many will violate the disconnection time limit
    // DEBUG_PRINT("SIGNAL LOSS");
  }
}
 
inline void Communicator::res_ready_callback() {
  // If res sends boot message, activate it
  std::array<uint8_t, 2> msg = {0x01, NODE_ID};  // 0x00 in byte 2 for all nodes
 
  send_message(2, msg, RES_ACTIVATE);
}
 
inline void Communicator::bamocar_callback(const uint8_t *buf) {
  _systemData->failure_detection_.inversor_alive_timestamp_.reset();
 
  if (buf[0] == BTB_READY) {
    if (buf[1] == false) {
      _systemData->failure_detection_.ts_on_ = false;
    }
  } else if (buf[0] == BAMOCAR_BATTERY_VOLTAGE_CODE) {
    unsigned dc_voltage = (buf[2] << 8) | buf[1];
    _systemData->failure_detection_.dc_voltage_ = dc_voltage;
 
    // Voltage hysteresis:
    if (dc_voltage < DC_THRESHOLD) {
      // When voltage drops/is below threshold: 
      // Reset hold timer and check if voltage has been below threshold long enough
      _systemData->failure_detection_.dc_voltage_hold_timestamp_.reset();
      if (_systemData->failure_detection_.dc_voltage_drop_timestamp_.checkWithoutReset()) {
        _systemData->failure_detection_.ts_on_ = false;
      }
    } else {
      // When voltage is above threshold:
      // Reset drop timer and check if voltage has been above threshold long enough
      _systemData->failure_detection_.dc_voltage_drop_timestamp_.reset();
      if (_systemData->failure_detection_.dc_voltage_hold_timestamp_.checkWithoutReset()) {
        _systemData->failure_detection_.ts_on_ = true;
      }
    }
  }
}
 
inline void Communicator::pc_callback(const uint8_t *buf) {
  if (buf[0] == PC_ALIVE) {
    _systemData->failure_detection_.pc_alive_timestamp_.reset();
  } else if (buf[0] == MISSION_FINISHED) {
    _systemData->mission_finished_ = true;
  } else if (buf[0] == AS_CU_EMERGENCY_SIGNAL) {
    _systemData->failure_detection_.emergency_signal_ = true;
  }
}
 
inline void Communicator::steering_callback() {
  _systemData->failure_detection_.steer_alive_timestamp_.reset();
}
 
inline void Communicator::parse_message(const CAN_message_t &msg) {
  switch (msg.id) {
    case AS_CU_ID:
      pc_callback(msg.buf);
    case RES_STATE:
      res_state_callback(msg.buf);
      break;
    case RES_READY:
      res_ready_callback();
      break;
    case BAMO_RESPONSE_ID:
      bamocar_callback(msg.buf);
      break;
    case STEERING_ID:
      steering_callback();
      break;
    default:
      break;
  }
}
 
inline int Communicator::publish_state(const int state_id) {
  const std::array<uint8_t, 2> msg = {STATE_MSG, static_cast<uint8_t>(state_id)};
  send_message(2, msg, MASTER_ID);
  return 0;
}
 
inline int Communicator::publish_mission(int mission_id) {
  const std::array<uint8_t, 2> msg = {MISSION_MSG, static_cast<uint8_t>(mission_id)};
 
  send_message(2, msg, MASTER_ID);
  return 0;
}
inline int Communicator::publish_debug_morning_log(const SystemData &system_data, uint8_t state,
                                                   uint8_t state_checkup) {
  send_message(8, create_debug_message_1(system_data, state, state_checkup), MASTER_ID);
  send_message(7, create_debug_message_2(system_data), MASTER_ID);
  return 0;
}
 
inline int Communicator::publish_soc(uint8_t soc) {
  const std::array<uint8_t, 2> msg = {SOC_MSG, soc};
  send_message(2, msg, MASTER_ID);
  return 0;
}
 
inline int Communicator::publish_asms_on(bool asms_on) {
  const std::array<uint8_t, 2> msg = {ASMS_ON, asms_on};
  send_message(2, msg, MASTER_ID);
  return 0;
}
 
inline int Communicator::publish_rpm() {
  std::array<uint8_t, 5> rl_rpm_msg = {0};
  std::array<uint8_t, 5> rr_rpm_msg = {0};
 
  char rr_rpm_byte[4];
  char rl_rpm_byte[4];
  rpm_2_byte(_systemData->hardware_data_._left_wheel_rpm, rl_rpm_byte);
  rpm_2_byte(_systemData->hardware_data_._right_wheel_rpm, rr_rpm_byte);
 
  rl_rpm_msg[0] = LEFT_WHEEL_CODE;
  for (int i = 0; i < 4; i++) {
    rl_rpm_msg[i + 1] = rl_rpm_byte[i];
  }
 
  rr_rpm_msg[0] = RIGHT_WHEEL_CODE;
  for (int i = 0; i < 4; i++) {
    rr_rpm_msg[i + 1] = rr_rpm_byte[i];
  }
  send_message(5, rl_rpm_msg, MASTER_ID);
  send_message(5, rr_rpm_msg, MASTER_ID);
 
  return 0;
}
 
template <std::size_t N>
inline int Communicator::send_message(const unsigned len, const std::array<uint8_t, N> &buffer,
                                      const unsigned id) {
  CAN_message_t can_message;
  can_message.id = id;
  can_message.len = len;
  for (unsigned i = 0; i < len; i++) {
    can_message.buf[i] = buffer[i];
  }
  can2.write(can_message);
 
  return 0;
}