6 files changed, 100 insertions, 5 deletions
diff --git a/src/gr-fadingui/grc/CMakeLists.txt b/src/gr-fadingui/grc/CMakeLists.txt
index e4b2ee9..98713e8 100644
--- a/src/gr-fadingui/grc/CMakeLists.txt
+++ b/src/gr-fadingui/grc/CMakeLists.txt
@@ -19,5 +19,5 @@
 # Boston, MA 02110-1301, USA.
 install(FILES
     fadingui_datasource.block.yml
-    DESTINATION share/gnuradio/grc/blocks
+    fadingui_dearpygui_sink.block.yml DESTINATION share/gnuradio/grc/blocks
 )
diff --git a/src/gr-fadingui/grc/fadingui_dearpygui_sink.block.yml b/src/gr-fadingui/grc/fadingui_dearpygui_sink.block.yml
new file mode 100644
index 0000000..3712be4
--- /dev/null
+++ b/src/gr-fadingui/grc/fadingui_dearpygui_sink.block.yml
@@ -0,0 +1,38 @@
+id: fadingui_dearpygui_sink
+label: UI Sink
+category: '[fadingui]'
+
+templates:
+  imports: import fadingui
+  make: fadingui.dearpygui_sink()
+
+#  Make one 'parameters' list entry for every parameter you want settable from the GUI.
+#     Keys include:
+#     * id (makes the value accessible as \$keyname, e.g. in the make entry)
+#     * label (label shown in the GUI)
+#     * dtype (e.g. int, float, complex, byte, short, xxx_vector, ...)
+parameters:
+- id: sock_addr
+  label: Socket address
+  dtype: string
+  default: udp://
+
+- id: ui_element_id
+  label: UI element ID
+  dtype: raw
+
+
+#  Make one 'inputs' list entry per input and one 'outputs' list entry per output.
+#  Keys include:
+#      * label (an identifier for the GUI)
+#      * domain (optional - stream or message. Default is stream)
+#      * dtype (e.g. int, float, complex, byte, short, xxx_vector, ...)
+#      * vlen (optional - data stream vector length. Default is 1)
+#      * optional (optional - set to 1 for optional inputs. Default is 0)
+inputs:
+- label: in
+  dtype: complex
+
+#  'file_format' specifies the version of the GRC yml format used in the file
+#  and should usually not be changed.
+file_format: 1
diff --git a/src/gr-fadingui/python/CMakeLists.txt b/src/gr-fadingui/python/CMakeLists.txt
index 4ab9bbc..27b5f4b 100644
--- a/src/gr-fadingui/python/CMakeLists.txt
+++ b/src/gr-fadingui/python/CMakeLists.txt
@@ -33,7 +33,7 @@ GR_PYTHON_INSTALL(
     FILES
     __init__.py
     datasource.py
-    DESTINATION ${GR_PYTHON_DIR}/fadingui
+    dearpygui_sink.py DESTINATION ${GR_PYTHON_DIR}/fadingui
 )
 
 ########################################################################
@@ -43,3 +43,4 @@ include(GrTest)
 
 set(GR_TEST_TARGET_DEPS gnuradio-fadingui)
 set(GR_TEST_PYTHON_DIRS ${CMAKE_BINARY_DIR}/swig)
+GR_ADD_TEST(qa_dearpygui_sink ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_dearpygui_sink.py)
diff --git a/src/gr-fadingui/python/__init__.py b/src/gr-fadingui/python/__init__.py
index 6cfa23b..d551a71 100644
--- a/src/gr-fadingui/python/__init__.py
+++ b/src/gr-fadingui/python/__init__.py
@@ -33,5 +33,6 @@ except ImportError:
 
 # import any pure python here
 from .datasource import datasource
+from .dearpygui_sink import dearpygui_sink
 
 #
diff --git a/src/gr-fadingui/python/dearpygui_sink.py b/src/gr-fadingui/python/dearpygui_sink.py
new file mode 100644
index 0000000..2b8e9fb
--- /dev/null
+++ b/src/gr-fadingui/python/dearpygui_sink.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright 2021 Naoki Pross.
+#
+# This is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this software; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+
+import numpy as np
+from gnuradio import gr
+
+class dearpygui_sink(gr.sync_block):
+    """
+    docstring for block dearpygui_sink
+    """
+    def __init__(self):
+        gr.sync_block.__init__(self,
+            name="dearpygui_sink",
+            in_sig=[np.complex64],
+            out_sig=None)
+
+
+    def work(self, input_items, output_items):
+        in0 = input_items[0]
+        # <+signal processing here+>
+        return len(input_items[0])
+
diff --git a/tests/fadingui/QAM/qam_nogui.grc b/tests/fadingui/QAM/qam_nogui.grc
index 681ec7f..be2f20a 100644
--- a/tests/fadingui/QAM/qam_nogui.grc
+++ b/tests/fadingui/QAM/qam_nogui.grc
@@ -337,7 +337,7 @@ blocks:
     modulus: eq_mod
     mu: eq_gain
     num_taps: eq_ntaps
-    sps: sps
+    sps: '1'
   states:
     bus_sink: false
     bus_source: false
@@ -444,8 +444,8 @@ blocks:
     max_dev: '1.5'
     maxoutbuf: '0'
     minoutbuf: '0'
-    osps: sps
-    sps: sps * 1.001
+    osps: '1'
+    sps: sps
     taps: rrc_taps
     type: ccf
   states:
@@ -474,6 +474,19 @@ blocks:
     coordinate: [64, 252.0]
     rotation: 0
     state: true
+- name: fadingui_dearpygui_sink_0
+  id: fadingui_dearpygui_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [2120, 200.0]
+    rotation: 0
+    state: true
 
 connections:
 - [blocks_throttle_0, '0', channels_channel_model_0, '0']
@@ -483,6 +496,7 @@ connections:
 - [digital_constellation_decoder_cb_0, '0', digital_diff_decoder_bb_0, '0']
 - [digital_constellation_modulator_0, '0', blocks_throttle_0, '0']
 - [digital_costas_loop_cc_0, '0', digital_constellation_decoder_cb_0, '0']
+- [digital_costas_loop_cc_0, '0', fadingui_dearpygui_sink_0, '0']
 - [digital_diff_decoder_bb_0, '0', digital_map_bb_0, '0']
 - [digital_map_bb_0, '0', blocks_null_sink_0, '0']
 - [digital_pfb_clock_sync_xxx_0, '0', digital_cma_equalizer_cc_0, '0']