fixed bug if no callback function handler was specified for target po…

…sition

library.json

@@ -10,7 +10,7 @@
         "type": "git",
         "url": "https://github.com/pkerspe/ESP-FlexyStepper.git"
     },
-    "version": "1.3",
+    "version": "1.3.1",
     "license": "MIT",
     "frameworks": "arduino",
     "platforms": [

library.properties

@@ -1,5 +1,5 @@
 name=ESP-FlexyStepper
-version=1.3
+version=1.3.1
 author=Paul Kerspe
 maintainer=Paul Kerspe
 sentence=This library is used to control one or more stepper motors from an ESP32 device

src/ESP_FlexyStepper.cpp

@@ -1012,10 +1012,12 @@ bool ESP_FlexyStepper::processMovement(void)
       if (this->isOnWayToHome)
       {
         this->setCurrentPositionAsHomeAndStop(); //clear isOnWayToHome flag and stop motion
-        if (this->_homeReachedCallback)
+
+        if (this->_homeReachedCallback != NULL)
         {
           this->_homeReachedCallback();
         }
+
         return true;
       }
     }
@@ -1110,7 +1112,10 @@ bool ESP_FlexyStepper::processMovement(void)
       if (this->firstProcessingAfterTargetReached)
       {
         firstProcessingAfterTargetReached = false;
-        this->_targetPositionReachedCallback();
+        if (this->_targetPositionReachedCallback)
+        {
+          this->_targetPositionReachedCallback();
+        }
       }
       return (true);
     }

src/ESP_FlexyStepper.h

@@ -141,12 +141,12 @@ class ESP_FlexyStepper
   static const byte LIMIT_SWITCH_COMBINED_BEGIN_AND_END = 2;
 
 private:
-  callbackFunction _homeReachedCallback;
-  callbackFunction _limitTriggeredCallback;
-  callbackFunction _emergencyStopTriggeredCallback;
-  callbackFunction _emergencyStopReleasedCallback;
-  callbackFunction _targetPositionReachedCallback;
-  callbackFunction _callbackFunctionForGoToLimit;
+  callbackFunction _homeReachedCallback = NULL;
+  callbackFunction _limitTriggeredCallback = NULL;
+  callbackFunction _emergencyStopTriggeredCallback = NULL;
+  callbackFunction _emergencyStopReleasedCallback = NULL;
+  callbackFunction _targetPositionReachedCallback = NULL;
+  callbackFunction _callbackFunctionForGoToLimit = NULL;
 
   static void taskRunner(void *parameter);