Fix ros-controls#259

roncapat · Mar 27, 2024 · d372af4 · d372af4
1 parent a105607
commit d372af4
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/gz_ros2_control/src/gz_system.cpp b/gz_ros2_control/src/gz_system.cpp
@@ -235,8 +235,12 @@ bool GazeboSimSystem::initSim(
 
   constexpr double default_gain = 0.1;
 
-  this->dataPtr->position_proportional_gain_ = this->nh_->declare_parameter<double>(
-    "position_proportional_gain", default_gain);
+  try {
+    this->dataPtr->position_proportional_gain_ = this->nh_->declare_parameter<double>(
+      "position_proportional_gain", default_gain);
+  }  catch (rclcpp::exceptions::ParameterAlreadyDeclaredException & ex) {
+    /* avoid redeclaration */
+  }
 
   RCLCPP_INFO_STREAM(
     this->nh_->get_logger(),