RokubiminiEthercat.cpp

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#include <rokubimini_ethercat/RokubiminiEthercat.hpp>
#include <rokubimini_msgs/Reading.h>
#include <csignal>
#include <thread>
#include <diagnostic_updater/DiagnosticStatusWrapper.h>
#include <diagnostic_msgs/DiagnosticArray.h>
 
namespace rokubimini
{
namespace ethercat
{
void RokubiminiEthercat::postSetupConfiguration()
{
}
void RokubiminiEthercat::preSetupConfiguration()
{
  slavePtr_->preSetupConfiguration();
}
 
void RokubiminiEthercat::updateProcessReading()
{
  {
    std::lock_guard<std::recursive_mutex> lock(readingMutex_);
    slavePtr_->getReading(reading_);
 
    // Update statusword.
    auto statusword(reading_.getStatusword());
    setStatusword(statusword);
    statuswordRequested_ = false;
  }
 
  if (deviceIsMissing())
  {
    Statusword statusword;
    setStatusword(statusword);
  }
}
 
void RokubiminiEthercat::shutdownWithCommunication()
{
  slavePtr_->shutdown();
  // publish the last diagnostics before shutdown
  connectionStatusUpdater_->force_update();
}
 
bool RokubiminiEthercat::deviceIsMissing() const
{
  return false;
}
 
bool RokubiminiEthercat::getSerialNumber(unsigned int& serialNumber)
{
  return slavePtr_->getSerialNumber(serialNumber);
}
 
bool RokubiminiEthercat::getForceTorqueSamplingRate(int& samplingRate)
{
  return slavePtr_->getForceTorqueSamplingRate(samplingRate);
}
 
bool RokubiminiEthercat::setForceTorqueFilter(const configuration::ForceTorqueFilter& filter)
{
  return slavePtr_->setForceTorqueFilter(filter);
}
 
bool RokubiminiEthercat::setAccelerationFilter(const unsigned int filter)
{
  return slavePtr_->setAccelerationFilter(filter);
}
 
bool RokubiminiEthercat::setAngularRateFilter(const unsigned int filter)
{
  return slavePtr_->setAngularRateFilter(filter);
}
 
bool RokubiminiEthercat::setAccelerationRange(const unsigned int range)
{
  return slavePtr_->setAccelerationRange(range);
}
 
bool RokubiminiEthercat::setAngularRateRange(const unsigned int range)
{
  return slavePtr_->setAngularRateRange(range);
}
 
bool RokubiminiEthercat::setForceTorqueOffset(const Eigen::Matrix<double, 6, 1>& forceTorqueOffset)
{
  return slavePtr_->setForceTorqueOffset(forceTorqueOffset);
}
 
bool RokubiminiEthercat::setSensorConfiguration(const configuration::SensorConfiguration& sensorConfiguration)
{
  if (!slavePtr_->setSensorConfiguration(sensorConfiguration))
  {
    return false;
  }
  getConfiguration().setSensorConfiguration(sensorConfiguration);
  return true;
}
 
bool RokubiminiEthercat::setSensorCalibration(const calibration::SensorCalibration& sensorCalibration)
{
  if (!slavePtr_->setSensorCalibration(sensorCalibration))
  {
    return false;
  }
  getConfiguration().setSensorCalibration(sensorCalibration);
  return true;
}
 
bool RokubiminiEthercat::setConfigMode()
{
  return slavePtr_->setConfigMode();
}
 
bool RokubiminiEthercat::setRunMode()
{
  return slavePtr_->setRunMode();
}
 
bool RokubiminiEthercat::saveConfigParameter()
{
  return slavePtr_->saveConfigParameter();
}
 
using RokubiminiReadingRos = rokubimini_msgs::Reading;
using RokubiminiWrenchRos = geometry_msgs::WrenchStamped;
using RokubiminiImuRos = sensor_msgs::Imu;
using RokubiminiTemperatureRos = sensor_msgs::Temperature;
void RokubiminiEthercat::createRosPublishers()
{
  readingPublisher_ = std::make_shared<ros::Publisher>(nh_->advertise<RokubiminiReadingRos>(
      nh_->getNamespace() + "/" + getName() + "/ft_sensor_readings/reading", 10, false));
 
  wrenchPublisher_ = std::make_shared<ros::Publisher>(nh_->advertise<RokubiminiWrenchRos>(
      nh_->getNamespace() + "/" + getName() + "/ft_sensor_readings/wrench", 10, false));
 
  imuPublisher_ = std::make_shared<ros::Publisher>(
      nh_->advertise<RokubiminiImuRos>(nh_->getNamespace() + "/" + getName() + "/ft_sensor_readings/imu", 10, false));
 
  temperaturePublisher_ = std::make_shared<ros::Publisher>(nh_->advertise<RokubiminiTemperatureRos>(
      nh_->getNamespace() + "/" + getName() + "/ft_sensor_readings/temperature", 10, false));
  dataFlagsDiagnosticsPublisher_ =
      std::make_shared<ros::Publisher>(nh_->advertise<diagnostic_msgs::DiagnosticArray>("/diagnostics", 10, false));
}
 
void RokubiminiEthercat::setRunsAsync(bool runsAsync)
{
  slavePtr_->setRunsAsync(runsAsync);
}
void RokubiminiEthercat::publishRosMessages()
{
  auto reading = getReading();
  rokubimini_msgs::Reading reading_msg;
  reading_msg.header.stamp = reading.getWrench().header.stamp;
  // reading_msg.header.frame_id = reading.getWrench().header.frame_id;
  reading_msg.statusword = reading.getStatusword().getData();
  reading_msg.imu = reading.getImu();
  reading_msg.wrench = reading.getWrench();
  reading_msg.externalImu = reading.getExternalImu();
  reading_msg.isForceTorqueSaturated = reading.isForceTorqueSaturated();
  reading_msg.temperature = reading.getTemperature();
 
  // if reset wrench is triggered take the mean of the measurements
  if (computeMeanWrenchFlag_)
  {
    std::lock_guard<std::recursive_mutex> lock(meanWrenchOffsetMutex_);
    std::uint32_t lpos = wrenchMessageCount_;
    wrenchMessageCount_++;
    // increase the rows of the dynamic array
    resetServiceWrenchSamples_.conservativeResize(6, wrenchMessageCount_);
    // assign new values to the array
    resetServiceWrenchSamples_(0, lpos) = reading.getWrench().wrench.force.x;
    resetServiceWrenchSamples_(1, lpos) = reading.getWrench().wrench.force.y;
    resetServiceWrenchSamples_(2, lpos) = reading.getWrench().wrench.force.z;
    resetServiceWrenchSamples_(3, lpos) = reading.getWrench().wrench.torque.x;
    resetServiceWrenchSamples_(4, lpos) = reading.getWrench().wrench.torque.y;
    resetServiceWrenchSamples_(5, lpos) = reading.getWrench().wrench.torque.z;
  }
  readingPublisher_->publish(reading_msg);
  wrenchPublisher_->publish(reading.getWrench());
  imuPublisher_->publish(reading.getImu());
  temperaturePublisher_->publish(reading.getTemperature());
  // update the data flags to be used by diagnostics
  slavePtr_->updateDataFlags();
}
 
void RokubiminiEthercat::signalShutdown()
{
  // wait a small amount of time so that the callback can return the result to the user.
  std::this_thread::sleep_for(std::chrono::microseconds(500));
  kill(getpid(), SIGINT);
}
 
void RokubiminiEthercat::updateConnectionStatus(diagnostic_updater::DiagnosticStatusWrapper& stat)
{
  slavePtr_->updateConnectionStatus(stat);
}
 
void RokubiminiEthercat::createRosDiagnostics()
{
  connectionStatusUpdater_ = std::make_shared<diagnostic_updater::Updater>();
  unsigned int serial_number;
  getSerialNumber(serial_number);
  connectionStatusUpdater_->setHardwareID(std::to_string(serial_number));
  connectionStatusUpdater_->add(getName() + ": Status", this, &RokubiminiEthercat::updateConnectionStatus);
  // create the timer for the data flags diagnostics
  dataFlagsDiagnosticsTimer_ = std::make_shared<ros::Timer>(
      nh_->createTimer(ros::Duration(0.1), &RokubiminiEthercat::publishDataFlagsDiagnostics, this));
}
 
void RokubiminiEthercat::publishRosDiagnostics()
{
  publishConnectionStatusDiagnostics();
}
 
void RokubiminiEthercat::publishConnectionStatusDiagnostics()
{
  connectionStatusUpdater_->update();
}
 
void RokubiminiEthercat::publishDataFlagsDiagnostics(const ros::TimerEvent& event)
{
  // publish the Data Status Diagnostics
  diagnostic_updater::DiagnosticStatusWrapper stat;
  slavePtr_->createDataFlagsDiagnostics(stat);
  // reset the data flags
  slavePtr_->resetDataFlags();
  // set the namespace of the diagnostics status
  stat.name = nh_->getNamespace().substr(1) + ": " + getName() + ": Data Flags";
  // set the hardware ID
  unsigned int serial_number;
  getSerialNumber(serial_number);
  stat.hardware_id = std::to_string(serial_number);
  // create the diagnostics array and fill it with the Diagnostics Status message
  diagnostic_msgs::DiagnosticArray diagnostics_array;
  diagnostics_array.status.emplace_back(stat);
  // fill the Header
  diagnostics_array.header.stamp = ros::Time::now();
  dataFlagsDiagnosticsPublisher_->publish(diagnostics_array);
}
 
bool RokubiminiEthercat::firmwareUpdateCallback(rokubimini_msgs::FirmwareUpdateEthercat::Request& request,
                                                rokubimini_msgs::FirmwareUpdateEthercat::Response& response)
{
  response.result = slavePtr_->firmwareUpdate(request.file_path, request.file_name, request.password);
  if (!slavePtr_->isRunning())
  {
    // time to shut down the ROS node.
    std::thread shutdown_thread(&RokubiminiEthercat::signalShutdown, this);
    shutdown_thread.detach();
  }
  return true;
}
 
bool RokubiminiEthercat::resetWrenchCallback(rokubimini_msgs::ResetWrench::Request& request,
                                             rokubimini_msgs::ResetWrench::Response& response)
{
  ROS_INFO("[%s] Reseting sensor measurements...", name_.c_str());
 
  bool success = false;
  unsigned int count = 0;
  Eigen::Matrix<double, 6, 1> new_offset;
 
  while (!success and count < 8)
  {
    // initialize all variables to zero
    wrenchMessageCount_ = 0;
    // enable the computation of the mean wrench
    computeMeanWrenchFlag_ = true;
    // wait for computing the mean of wrench measurements
    while (wrenchMessageCount_ != TOTAL_NUMBER_OF_WRENCH_MESSAGES)
      ;
    // disable the computation of the mean wrench
    computeMeanWrenchFlag_ = false;
    if (!setConfigMode())
    {
      ROS_ERROR("[%s] Device could not switch to config mode", name_.c_str());
      response.success = false;
      return true;
    }
    geometry_msgs::Wrench wrench;
    Eigen::Matrix<double, 6, 1> mean_wrench;
    // lock to get the mean wrench offset value
    {
      std::lock_guard<std::recursive_mutex> lock(meanWrenchOffsetMutex_);
      mean_wrench = resetServiceWrenchSamples_.rowwise().mean();
      wrench.force.x = mean_wrench(0, 0);
      wrench.force.y = mean_wrench(1, 0);
      wrench.force.z = mean_wrench(2, 0);
      wrench.torque.x = mean_wrench(3, 0);
      wrench.torque.y = mean_wrench(4, 0);
      wrench.torque.z = mean_wrench(5, 0);
    }
    geometry_msgs::Wrench desired_wrench = request.desired_wrench;
    auto current_offset = configuration_.getForceTorqueOffset();
    // new offset = current wrench measurements + current offset - desired offset
    new_offset(0, 0) = desired_wrench.force.x - wrench.force.x + current_offset(0, 0);
    new_offset(1, 0) = desired_wrench.force.y - wrench.force.y + current_offset(1, 0);
    new_offset(2, 0) = desired_wrench.force.z - wrench.force.z + current_offset(2, 0);
    new_offset(3, 0) = desired_wrench.torque.x - wrench.torque.x + current_offset(3, 0);
    new_offset(4, 0) = desired_wrench.torque.y - wrench.torque.y + current_offset(4, 0);
    new_offset(5, 0) = desired_wrench.torque.z - wrench.torque.z + current_offset(5, 0);
    ROS_DEBUG_STREAM("[" << getName() << "] "
                         << "New offset is: " << new_offset);
    if (!setForceTorqueOffset(new_offset))
    {
      ROS_ERROR("[%s] Could not write new offset to device", name_.c_str());
      response.success = false;
      return true;
    }
    if (!setRunMode())
    {
      ROS_ERROR("[%s] Device could not switch to run mode", name_.c_str());
      response.success = false;
      return true;
    }
    configuration_.setForceTorqueOffset(new_offset);
 
    // initialize all variables to zero
    wrenchMessageCount_ = 0;
    // enable the computation of the mean wrench
    computeMeanWrenchFlag_ = true;
    // wait for computing the mean of wrench measurements
    while (wrenchMessageCount_ != TOTAL_NUMBER_OF_WRENCH_MESSAGES)
      ;
    // disable the computation of the mean wrench
    computeMeanWrenchFlag_ = false;
 
    // lock to get the mean wrench offset value
    {
      std::lock_guard<std::recursive_mutex> lock(meanWrenchOffsetMutex_);
      mean_wrench = resetServiceWrenchSamples_.rowwise().mean();
    }
    success = true;
    Eigen::Vector3d forceError;
    forceError << mean_wrench(0, 0) - desired_wrench.force.x, mean_wrench(1, 0) - desired_wrench.force.y,
        mean_wrench(2, 0) - desired_wrench.force.z;
    if (forceError.norm() > 0.2)
    {
      ROS_DEBUG_STREAM("Could not reset wrench. Force error" << forceError);
      success = false;
    }
 
    Eigen::Vector3d torqueError;
    torqueError << mean_wrench(3, 0) - desired_wrench.torque.x, mean_wrench(4, 0) - desired_wrench.torque.y,
        mean_wrench(5, 0) - desired_wrench.torque.z;
    if (torqueError.norm() > 0.01)
    {
      ROS_DEBUG_STREAM("Could not reset wrench. Torque error" << torqueError);
      success = false;
    }
    count++;
  }
 
  response.success = success;
  ROS_INFO("[%s] Sensor measurements are reset successfully", name_.c_str());
  return true;
}
void RokubiminiEthercat::createRosServices()
{
  firmwareUpdateService_ = nh_->advertiseService(nh_->getNamespace() + "/" + getName() + "/firmware_update",
                                                 &RokubiminiEthercat::firmwareUpdateCallback, this);
  resetWrenchService_ = nh_->advertiseService(nh_->getNamespace() + "/" + getName() + "/reset_wrench",
                                              &RokubiminiEthercat::resetWrenchCallback, this);
}
bool RokubiminiEthercat::sendSdoReadGeneric(const std::string& indexString, const std::string& subindexString,
                                            const std::string& valueTypeString, std::string& valueString)
{
  return slavePtr_->sendSdoReadGeneric(indexString, subindexString, valueTypeString, valueString);
}
 
bool RokubiminiEthercat::sendSdoWriteGeneric(const std::string& indexString, const std::string& subindexString,
                                             const std::string& valueTypeString, const std::string& valueString)
{
  return slavePtr_->sendSdoWriteGeneric(indexString, subindexString, valueTypeString, valueString);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     int8_t& value)
{
  return slavePtr_->sendSdoReadInt8(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     int16_t& value)
{
  return slavePtr_->sendSdoReadInt16(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     int32_t& value)
{
  return slavePtr_->sendSdoReadInt32(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     int64_t& value)
{
  return slavePtr_->sendSdoReadInt64(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     uint8_t& value)
{
  return slavePtr_->sendSdoReadUInt8(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     uint16_t& value)
{
  return slavePtr_->sendSdoReadUInt16(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     uint32_t& value)
{
  return slavePtr_->sendSdoReadUInt32(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     uint64_t& value)
{
  return slavePtr_->sendSdoReadUInt64(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     float& value)
{
  return slavePtr_->sendSdoReadFloat(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoRead(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                     double& value)
{
  return slavePtr_->sendSdoReadDouble(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const int8_t value)
{
  return slavePtr_->sendSdoWriteInt8(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const int16_t value)
{
  return slavePtr_->sendSdoWriteInt16(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const int32_t value)
{
  return slavePtr_->sendSdoWriteInt32(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const int64_t value)
{
  return slavePtr_->sendSdoWriteInt64(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const uint8_t value)
{
  return slavePtr_->sendSdoWriteUInt8(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const uint16_t value)
{
  return slavePtr_->sendSdoWriteUInt16(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const uint32_t value)
{
  return slavePtr_->sendSdoWriteUInt32(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const uint64_t value)
{
  return slavePtr_->sendSdoWriteUInt64(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const float value)
{
  return slavePtr_->sendSdoWriteFloat(index, subindex, completeAccess, value);
}
 
template <>
bool RokubiminiEthercat::sendSdoWrite(const uint16_t index, const uint8_t subindex, const bool completeAccess,
                                      const double value)
{
  return slavePtr_->sendSdoWriteDouble(index, subindex, completeAccess, value);
}
 
}  // namespace ethercat
}  // namespace rokubimini