/*!
* \brief Executes the service callback for recover.
*
* Recovers the driver after an emergency stop.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Recover( cob_srvs::Trigger::Request &req,
cob_srvs::Trigger::Response &res )
{
if (isInitialized_ == true)
{
ROS_INFO("Recovering powercubes");
// stopping all arm movements
if (PCube_->Stop())
{
ROS_INFO("Recovering powercubes succesfull");
res.success.data = true;
}
else
{
ROS_ERROR("Recovering powercubes not succesfull. error: %s", PCube_->getErrorMessage().c_str());
res.success.data = false;
res.error_message.data = PCube_->getErrorMessage();
}
}
else
{
ROS_ERROR("...powercubes already recovered...");
res.success.data = false;
res.error_message.data = "powercubes already recovered";
}
return true;
}
/*!
* \brief Executes the service callback for init.
*
* Connects to the hardware and initialized it.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Init( cob_srvs::Trigger::Request &req,
cob_srvs::Trigger::Response &res )
{
if (isInitialized_ == false)
{
ROS_INFO("...initializing powercubes...");
// init powercubes
if (PCube_->Init(PCubeParams_))
{
ROS_INFO("Initializing succesfull");
isInitialized_ = true;
res.success.data = true;
res.error_message.data = "success";
}
else
{
ROS_ERROR("Initializing powercubes not succesfull. error: %s", PCube_->getErrorMessage().c_str());
res.success.data = false;
res.error_message.data = PCube_->getErrorMessage();
}
}
else
{
ROS_ERROR("...powercubes already initialized...");
res.success.data = false;
res.error_message.data = "powercubes already initialized";
}
return true;
}
/*!
* \brief Executes the service callback for recover.
*
* Recovers the driver after an emergency stop.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Recover(cob_srvs::Trigger::Request &req, cob_srvs::Trigger::Response &res)
{
ROS_INFO("Recovering powercubes...");
if (initialized_)
{
/// stopping all arm movements
if (pc_ctrl_->Recover())
{
error_ = false;
error_msg_ = "";
res.success.data = true;
ROS_INFO("...recovering powercubes successful.");
}
else
{
res.success.data = false;
error_ = true;
error_msg_ = pc_ctrl_->getErrorMessage();
res.error_message.data = pc_ctrl_->getErrorMessage();
ROS_ERROR("...recovering powercubes not successful. error: %s", res.error_message.data.c_str());
}
}
else
{
res.success.data = false;
res.error_message.data = "powercubes not initialized";
ROS_ERROR("...recovering powercubes not successful. error: %s",res.error_message.data.c_str());
}
return true;
}
/*!
* \brief Executes the service callback for init.
*
* Connects to the hardware and initialized it.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Init(cob_srvs::Trigger::Request &req, cob_srvs::Trigger::Response &res)
{
if (!initialized_)
{
ROS_INFO("Initializing powercubes...");
/// initialize powercubes
if (pc_ctrl_->Init(pc_params_))
{
initialized_ = true;
res.success.data = true;
ROS_INFO("...initializing powercubes successful");
}
else
{
error_ = true;
error_msg_ = pc_ctrl_->getErrorMessage();
res.success.data = false;
res.error_message.data = pc_ctrl_->getErrorMessage();
ROS_INFO("...initializing powercubes not successful. error: %s", res.error_message.data.c_str());
}
}
else
{
res.success.data = true;
res.error_message.data = "powercubes already initialized";
ROS_WARN("...initializing powercubes not successful. error: %s",res.error_message.data.c_str());
}
return true;
}
bool srvCallback_Stop(cob3_srvs::Stop::Request &req,
cob3_srvs::Stop::Response &res )
{
ROS_INFO("Stopping powercubes");
// stopping all arm movements
if (PCube->Stop())
{
ROS_INFO("Stopping powercubes succesfull");
res.success = 0; // 0 = true, else = false
}
else
{
ROS_ERROR("Stopping powercubes not succesfull. error: %s", PCube->getErrorMessage().c_str());
res.success = 1; // 0 = true, else = false
res.errorMessage.data = PCube->getErrorMessage();
}
return true;
}
/*!
* \brief Executes the service callback for stop.
*
* Stops all hardware movements.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Stop( cob_srvs::Trigger::Request &req,
cob_srvs::Trigger::Response &res )
{
ROS_INFO("Stopping powercubes");
newvel_ = false;
// set current trajectory to be finished
traj_point_nr_ = traj_.points.size();
// stopping all arm movements
if (PCube_->Stop())
{
ROS_INFO("Stopping powercubes succesfull");
res.success.data = true;
}
else
{
ROS_ERROR("Stopping powercubes not succesfull. error: %s", PCube_->getErrorMessage().c_str());
res.success.data = false;
res.error_message.data = PCube_->getErrorMessage();
}
return true;
}
// service callback functions
// function will be called when a service is querried
bool srvCallback_Init(cob3_srvs::Init::Request &req,
cob3_srvs::Init::Response &res )
{
ROS_INFO("Initializing powercubes");
// init powercubes
//TODO: make iniFilepath as an argument
//TODO: read iniFile into ros prarameters
if (PCube->Init("include/iniFile.txt"))
{
ROS_INFO("Initializing succesfull");
res.success = 0; // 0 = true, else = false
}
else
{
ROS_ERROR("Initializing powercubes not succesfull. error: %s", PCube->getErrorMessage().c_str());
res.success = 1; // 0 = true, else = false
res.errorMessage.data = PCube->getErrorMessage();
return true;
}
// homing powercubes
if (PCube->doHoming())
{
ROS_INFO("Homing powercubes succesfull");
res.success = 0; // 0 = true, else = false
}
else
{
ROS_ERROR("Homing powercubes not succesfull. error: %s", PCube->getErrorMessage().c_str());
res.success = 1; // 0 = true, else = false
res.errorMessage.data = PCube->getErrorMessage();
return true;
}
return true;
}
/*!
* \brief Executes the service callback for stop.
*
* Stops all hardware movements.
* \param req Service request
* \param res Service response
*/
bool srvCallback_Stop(cob_srvs::Trigger::Request &req, cob_srvs::Trigger::Response &res)
{
ROS_INFO("Stopping powercubes...");
// stop powercubes
if (pc_ctrl_->Stop())
{
res.success.data = true;
ROS_INFO("...stopping powercubes successful.");
}
else
{
res.success.data = false;
res.error_message.data = pc_ctrl_->getErrorMessage();
ROS_ERROR("...stopping powercubes not successful. error: %s", res.error_message.data.c_str());
}
return true;
}
/*!
* \brief Publishes the state of the powercube_chain as ros messages.
*
* Published to "/joint_states" as "sensor_msgs/JointState"
* Published to "state" as "pr2_controllers_msgs/JointTrajectoryState"
*/
void publishState(bool update=true)
{
if (initialized_)
{
ROS_DEBUG("publish state");
if(update)
{pc_ctrl_->updateStates();}
sensor_msgs::JointState joint_state_msg;
joint_state_msg.header.stamp = ros::Time::now();
joint_state_msg.name = pc_params_->GetJointNames();
joint_state_msg.position = pc_ctrl_->getPositions();
joint_state_msg.velocity = pc_ctrl_->getVelocities();
joint_state_msg.effort.resize(pc_params_->GetDOF());
pr2_controllers_msgs::JointTrajectoryControllerState controller_state_msg;
controller_state_msg.header.stamp = joint_state_msg.header.stamp;
controller_state_msg.joint_names = pc_params_->GetJointNames();
controller_state_msg.actual.positions = pc_ctrl_->getPositions();
controller_state_msg.actual.velocities = pc_ctrl_->getVelocities();
controller_state_msg.actual.accelerations = pc_ctrl_->getAccelerations();
std_msgs::String opmode_msg;
opmode_msg.data = "velocity";
/// publishing joint and controller states on topic
topicPub_JointState_.publish(joint_state_msg);
topicPub_ControllerState_.publish(controller_state_msg);
topicPub_OperationMode_.publish(opmode_msg);
last_publish_time_ = joint_state_msg.header.stamp;
}
// check status of PowerCube chain
if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK) { error_ = true; }
// check status of PowerCube chain
if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK)
{
error_ = true;
}
else
{
error_ = false;
}
// publishing diagnotic messages
diagnostic_msgs::DiagnosticArray diagnostics;
diagnostics.status.resize(1);
// set data to diagnostics
if(error_)
{
diagnostics.status[0].level = 2;
diagnostics.status[0].name = n_.getNamespace();;
diagnostics.status[0].message = pc_ctrl_->getErrorMessage();
}
else
{
if (initialized_)
{
diagnostics.status[0].level = 0;
diagnostics.status[0].name = n_.getNamespace(); //"schunk_powercube_chain";
diagnostics.status[0].message = "powercubechain initialized and running";
}
else
{
diagnostics.status[0].level = 1;
diagnostics.status[0].name = n_.getNamespace(); //"schunk_powercube_chain";
diagnostics.status[0].message = "powercubechain not initialized";
}
}
// publish diagnostic message
topicPub_Diagnostic_.publish(diagnostics);
}
/*!
* \brief Executes the callback from the command_vel topic.
*
* Set the current velocity target.
* \param msg JointVelocities
*/
void topicCallback_CommandVel(const brics_actuator::JointVelocities::ConstPtr& msg)
{
ROS_DEBUG("Received new velocity command");
if (!initialized_)
{
ROS_WARN("Skipping command: powercubes not initialized");
publishState(false);
return;
}
if (pc_ctrl_->getPC_Status() != PowerCubeCtrl::PC_CTRL_OK)
{
publishState(false);
return;
}
PowerCubeCtrl::PC_CTRL_STATUS status;
std::vector<std::string> errorMessages;
pc_ctrl_->getStatus(status, errorMessages);
/// ToDo: don't rely on position of joint names, but merge them (check between msg.joint_uri and member variable JointStates)
unsigned int DOF = pc_params_->GetDOF();
std::vector<std::string> jointNames = pc_params_->GetJointNames();
std::vector<double> cmd_vel(DOF);
std::string unit = "rad";
/// check dimensions
if (msg->velocities.size() != DOF)
{
ROS_ERROR("Skipping command: Commanded velocities and DOF are not same dimension.");
return;
}
/// parse velocities
for (unsigned int i = 0; i < DOF; i++)
{
/// check joint name
if (msg->velocities[i].joint_uri != jointNames[i])
{
ROS_ERROR("Skipping command: Received joint name %s doesn't match expected joint name %s for joint %d.",msg->velocities[i].joint_uri.c_str(),jointNames[i].c_str(),i);
return;
}
/// check unit
if (msg->velocities[i].unit != unit)
{
ROS_ERROR("Skipping command: Received unit %s doesn't match expected unit %s.",msg->velocities[i].unit.c_str(),unit.c_str());
return;
}
/// if all checks are successful, parse the velocity value for this joint
ROS_DEBUG("Parsing velocity %f for joint %s",msg->velocities[i].value,jointNames[i].c_str());
cmd_vel[i] = msg->velocities[i].value;
}
/// command velocities to powercubes
if (!pc_ctrl_->MoveVel(cmd_vel))
{
error_ = true;
error_msg_ = pc_ctrl_->getErrorMessage();
ROS_ERROR("Skipping command: %s",pc_ctrl_->getErrorMessage().c_str());
return;
}
ROS_DEBUG("Executed velocity command");
publishState(false);
}