Add support for devices without scan elements

Signed-off-by: Travis Collins <travis.collins@analog.com>

Author: tfcollins

+adi/+common/DebugAttribute.m

@@ -1,6 +1,6 @@
 classdef (Abstract) DebugAttribute < matlabshared.libiio.base 
 
-    methods (Hidden, Access = protected)
+    methods (Hidden)
         function setDebugAttributeLongLong(obj,attr,value)
             phydev = getDev(obj, obj.phyDevName);
             if (nargin == 1)
@@ -26,13 +26,13 @@ function setDebugAttributeBool(obj,attr,value)
             end
             status = iio_device_debug_attr_write_bool(obj,phydev,attr,value);
             cstatus(obj,status,['Attribute write failed for : ' attr]);
-            % Check
-            [status, rValue] = iio_device_debug_attr_read_bool(obj,phydev,attr);
-            cstatus(obj,status,['Error reading attribute: ' attr]);
-            if value ~= rValue
-                status = -1;
-                cstatus(obj,status,['Attribute ' attr ' return value ' num2str(rValue) ', expected ' num2str(value)]);
-            end            
+            % Check (Not implemented yet)
+%             [status, rValue] = iio_device_debug_attr_read_bool(obj,phydev,attr);
+%             cstatus(obj,status,['Error reading attribute: ' attr]);
+%             if value ~= rValue
+%                 status = -1;
+%                 cstatus(obj,status,['Attribute ' attr ' return value ' num2str(rValue) ', expected ' num2str(value)]);
+%             end            
         end                
     end       
 end

+adi/+common/Rx.m

@@ -7,15 +7,20 @@
 
         function varargout = stepImpl(obj)
             % Get the data
-            [dataRAW, valid] = getData(obj);
-            index = 1;
             c = obj.channelCount/2;
-            varargout = cell(c+1,1);
-            for k = 1:c
-                varargout{k} = complex(dataRAW(index,:),dataRAW(index+1,:)).';
-                index = index+2;
+            if c > 0
+                [dataRAW, valid] = getData(obj);
+                index = 1;
+                varargout = cell(c+1,1);
+                for k = 1:c
+                    varargout{k} = complex(dataRAW(index,:),dataRAW(index+1,:)).';
+                    index = index+2;
+                end
+                varargout{end} = valid;
+            else
+                varargout = cell(1,1);
+                varargout{1} = true;
             end
-            varargout{end} = valid;
         end
 
     end

+adi/+common/RxTx.m

@@ -106,14 +106,18 @@ function releaseChanBuffers(obj)
             obj.enabledChannels = true;
 
             % Create the buffers
-            status = createBuf(obj);
-            if status
-                for k=1:obj.channelCount
-                    disableChannel(obj, obj.channel_names{k}, obj.isOutput);
+            if obj.channelCount>0
+                status = createBuf(obj);
+                if status
+                    for k=1:obj.channelCount
+                        disableChannel(obj, obj.channel_names{k}, obj.isOutput);
+                    end
+                    releaseChanBuffers(obj);
+                    cerrmsg(obj,status,['Failed to create buffer for: ' obj.devName]);
+                    return
                 end
-                releaseChanBuffers(obj);
-                cerrmsg(obj,status,['Failed to create buffer for: ' obj.devName]);
-                return
+            else
+                status = 0;
             end
 
         end