Implemented a feature which allows for an additional field for having a text message

with a motor axis. To this purpose a new derived class SINQAxis and SINQController were
added which other drivers using this feature can derive from. The proof of concept and
test platform is the EL734 driver.

sinqEPICSApp/src/SINQController.cpp

@@ -0,0 +1,25 @@
+/*
+  This class contains the necessary changes to have an additional text fields for messages
+  with each axis.
+
+  Code lifted from Torsten Boegershausen ESS code.
+
+  Mark Koennecke, March 2017
+*/
+
+#include "SINQController.h"
+#include "asynMotorController.h"
+
+SINQController::SINQController(const char *portName, const char *SINQPortName, int numAxes)
+  :  asynMotorController(portName, numAxes+1, NUM_MOTOR_DRIVER_PARAMS+2,
+                         0, // No additional interfaces beyond those in base class
+                         0, // No additional callback interfaces beyond those in base class
+                         ASYN_CANBLOCK | ASYN_MULTIDEVICE, 
+                         1, // autoconnect
+                         0, 0)  // Default priority and stack size
+{
+  createParam(motorMessageIsFromDriverString,    asynParamInt32,      &motorMessageIsFromDriver_);
+  createParam(motorMessageTextString,            asynParamOctet,      &motorMessageText_);
+}
+
+