Workaround for apparent ASI SDK 1.31 and 1.32 bug that gives bogus de…

…fault values for GPS controls on cameras that don't have GPS and fails to complete exposures if the value is written back. More discussion on the issue at indilib#867

indi-asi/asi_base.cpp

@@ -1436,6 +1436,13 @@ void ASIBase::createControls(int piNumberOfControls)
         ASI_BOOL isAuto = ASI_FALSE;
         ASIGetControlValue(mCameraInfo.CameraID, cap.ControlType, &value, &isAuto);
 
+        // Workaround for apparent ASI SDK 1.31 and 1.32 bug that gives bogus default values for GPS
+        // controls on cameras that don't have GPS and fails to complete exposures if the value is written back.
+        if (cap.ControlType == ASI_GPS_START_LINE || cap.ControlType == ASI_GPS_END_LINE)
+        {
+            value = 0;
+        }
+
         if (cap.IsWritable)
         {
             LOGF_DEBUG("Adding above control as writable control number %d.", ControlNP.size());