Removed exit(-1) from init

When the initialization fails, the motor will now try again during each
poll.

src/turboPmacAxis.h

@@ -1,6 +1,9 @@
 #ifndef turboPmacAXIS_H
 #define turboPmacAXIS_H
 #include "sinqAxis.h"
+#include <memory>
+
+struct turboPmacAxisImpl;
 
 // Forward declaration of the controller class to resolve the cyclic dependency
 // between the controller and the axis .h-file. See
@@ -123,14 +126,24 @@ class turboPmacAxis : public sinqAxis {
      */
     asynStatus handleError(int error, char *userMessage, int sizeUserMessage);
 
-  protected:
+    /**
+     * @brief Check if the axis needs to run its initialization function
+     *
+     * @return true
+     * @return false
+     */
+    bool needInit();
+
+    /**
+     * @brief Instruct the axis to run its init() function during the next poll
+     *
+     * @param needInit
+     */
+    void setNeedInit(bool needInit);
+
+  private:
     turboPmacController *pC_;
-
-    bool waitForHandshake_;
-    time_t timeAtHandshake_;
-
-    // The axis status is used when enabling / disabling the motor
-    int axisStatus_;
+    std::unique_ptr<turboPmacAxisImpl> pTurboPmacA_;
 };
 
 #endif