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#!/usr/bin/env python3
# Python stdlib
import sys
# Grahical libraries
from dearpygui.dearpygui import *
from dearpygui.demo import show_demo
# Detect (unix) signals
import signal
# GNURadio tools
from gnuradio import gr
# Mathematics
import numpy as np
# Our interface for simulation / hardware
import qpsk
# For debugging
import logging
#================================================
# Debugging tools
logging.basicConfig(format="[%(levelname)s] %(asctime)s %(message)s", level=logging.DEBUG)
logger = logging.getLogger(__name__)
#================================================
# Initialize DearPyGUI
create_context()
create_viewport()
setup_dearpygui()
# Show demo for dev
show_demo()
#================================================
# Custom GNURadio blocks
class pygui_plot_block(gr.sync_block):
def __init__(self, title="Plot", xlabel="x", ylabel="y"):
gr.sync_block.__init__(self, name="PyGUI Plot",
in_sig=[np.complex64], out_sig=None)
self.title = title
self.xlabel = xlabel
self.ylabel = ylabel
# TODO: parametrize with nsamples
self.buffer = np.linspace(0, 1, 1000)
def construct_gui(self, width, height, **kwargs):
# Create plot
with plot(label=self.title, height=height, width=width, **kwargs):
add_plot_legend()
add_plot_axis(mvXAxis, label=self.xlabel)
add_plot_axis(mvYAxis, label=self.ylabel)
def work(self, input_items, output_items):
# This is a sink (no output)
# TODO: add samples to display buffer
return 0
class pygui_constellation_block(gr.sync_block):
def __init__(self, title="Constellation", xlabel="In-Phase", ylabel="Quadrature"):
gr.sync_block.__init__(self, name="PyGUI Constellation Diagram",
in_sig=[np.complex64], out_sig=None)
self.title = title
self.xlabel = xlabel
selt.ylabel = ylabel
def construct_gui(self, width, height, **kwargs):
# TODO: Create a widget based ons scatter plot
pass
def work(self, input_items, output_items):
# This is a sink (no output)
# TODO: add samples to display buffer
return 0
#================================================
# GUI Callback functions
# Flow graph window
def on_rx_node_link(sender, app_data):
link_id_1, link_id_2 = app_data
add_node_link(link_id_1, link_id_2, parent=sender)
def on_rx_node_delink(sender, app_data):
link_id = app_data
delete_item(link_id)
#================================================
# Set up GNURadio simulation
# Global variables, yes I know they are ugly
sim = qpsk.qpsk_nogui()
sim_running = False
# Catch signals
def sim_sig_handler(sig=None, frame=None):
sim.stop()
sim.wait()
sys.exit(0)
# TODO: create GUI handlers
signal.signal(signal.SIGINT, sim_sig_handler)
signal.signal(signal.SIGTERM, sim_sig_handler);
# Add GUI blocks
locked_time_plot = pygui_plot_block(title="Locked signal", ylabel="Amplitude", xlabel="Time")
sim.connect((sim.digital_costas_loop_cc_0, 0), (locked_time_plot, 0))
#================================================
# Settings Window
with window(label="Settings", width=200, height=400, pos=(25, 450), tag="sim_win"):
with child_window(autosize_x=True, height=100):
add_button(label="Toggle Fullscreen", callback= toggle_viewport_fullscreen)
with child_window(autosize_x=True):
with group(horizontal=True):
add_text("Simulation running:")
add_text("false", tag="sim_running_lbl")
with group(tag="sim_grp", horizontal=True):
def on_sim_start_btn_clicked():
global sim_running
if sim_running:
logger.error("Simulation is already running")
return
sim.start()
sim_running = True
logger.debug("Started simulation")
def on_sim_stop_btn_clicked():
global sim_running
if not sim_running:
logger.error("Simulation not running")
return
sim.stop()
sim.wait()
sim_running = False
logger.debug("Stopped simulation")
add_button(label="Start", tag="sim_start_btn", callback=on_sim_start_btn_clicked)
add_button(label="Stop", tag="sim_stop_btn", callback=on_sim_stop_btn_clicked)
#================================================
# Flow Graph Window
with window(label="RX DSP Flow Graph", width=800, height=400, pos=(25,25), tag="rx_win"):
with node_editor(callback=on_rx_node_link, delink_callback=on_rx_node_delink):
with node(label="USRP Source", pos=(20,100)):
with node_attribute(tag="src_out", attribute_type=mvNode_Attr_Output):
add_text("Signal from antenna")
with node(label="Clock Sync", pos=(200,200)):
with node_attribute(tag="clksync_in", attribute_type=mvNode_Attr_Input):
add_text("Input")
with node_attribute(tag="clksync_out", attribute_type=mvNode_Attr_Output):
add_text("Synchronized")
with node(label="Equalizer", pos=(350,100)):
with node_attribute(tag="eq_in", attribute_type=mvNode_Attr_Input):
add_text("Input")
with node_attribute(attribute_type=mvNode_Attr_Static):
add_knob_float(label="Gain")
with node_attribute(tag="eq_out", attribute_type=mvNode_Attr_Output):
add_text("Equalized")
with node(label="Phase Locked Loop", pos=(600, 200)):
with node_attribute(tag="pll_in", attribute_type=mvNode_Attr_Input):
add_text("Input")
with node_attribute(tag="pll_out", attribute_type=mvNode_Attr_Output):
add_text("Locked")
add_knob_float(label="Loop BW")
add_node_link(get_alias_id("src_out"), get_alias_id("clksync_in"))
add_node_link(get_alias_id("clksync_out"), get_alias_id("eq_in"))
add_node_link(get_alias_id("eq_out"), get_alias_id("pll_in"))
#================================================
# Time plots Window
with window(label="Time domain plots", width=800, height=400, pos=(850,25), tag="time_plots_win"):
locked_time_plot.construct_gui(width=780, height=300)
#================================================
# Start GUI
# Start window and main loop
show_viewport()
start_dearpygui()
# clean up gui
destroy_context()
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