diff options
Diffstat (limited to '')
| -rwxr-xr-x | src/gui/gui.py | 7 | ||||
| -rw-r--r-- | src/gui/net.py | 67 |
2 files changed, 47 insertions, 27 deletions
diff --git a/src/gui/gui.py b/src/gui/gui.py index b2cbebb..d817f63 100755 --- a/src/gui/gui.py +++ b/src/gui/gui.py @@ -98,7 +98,8 @@ with window(label="RX DSP Flow Graph", width=800, height=400, pos=(25,25), tag=" #================================================ # Network plots Window -recv_plot = net.network_plot(url="udp://localhost:31415", nsamples=100, label="Test", height=300, width=800) +recv_plot = net.network_plot(url="udp://localhost:31415", dtype=float, nsamples=100, \ + label="Test", height=300, width=800) plots = { recv_plot: "plt_ampl" @@ -107,9 +108,9 @@ plots = { with window(label="Time domain plots", width=800, height=400, pos=(850,25)): with recv_plot: add_plot_axis(mvXAxis, label="Time") - add_plot_axis(mvYAxis, label="Amplitude", tag="plt_ampl") + add_plot_axis(mvYAxis, label="Amplitude", tag="axis") - add_line_series(recv_plot.x_data, recv_plot.y_data, parent="plt_ampl") + add_line_series(recv_plot.xdata, recv_plot.ydata, parent="axis", tag="plt_ampl") #================================================ # Start GUI and main loop diff --git a/src/gui/net.py b/src/gui/net.py index 2c91bb8..c7008cd 100644 --- a/src/gui/net.py +++ b/src/gui/net.py @@ -1,6 +1,7 @@ import select import socket from urllib.parse import urlparse +import re import numpy as np from numpy_ringbuffer import RingBuffer @@ -11,9 +12,10 @@ class udpsource: """ Creates an UDP listening socket """ - def __init__(self, url): + def __init__(self, url, dtype): self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) self.url = urlparse(url) + self.dtype = dtype def __del__(self): self.sock.close() @@ -23,32 +25,46 @@ class udpsource: self.sock.bind((self.url.hostname, self.url.port)) # self.sock.listen() - def read(self, nbytes): - ready_to_read, ready_to_write, in_err = \ - select.select([self.sock], [], [], 1) - - if ready_to_read: - data = sock.recv(nbytes) - print(data) - else: + def read(self, nblocks): + ready, _, _ = select.select([self.sock], [], []) + if not ready: return None + # read from socket + blocksize = 1024 * 4 + string = ready[0].recv(nblocks * blocksize).decode("ascii") + + # decode string, remove empty values + chunks = filter(None, re.split(r"\[(.+?)\]", string)) + + def chunk_to_samples(chunk): + samples = chunk.split(",") + if samples: + return list(map(self.dtype, samples)) + + # convert each chunk into a list of samples + chunk_values = map(chunk_to_samples, chunks) + + # flatten list of lists into a single list + values = sum(chunk_values, []) + + return values class network_plot(udpsource): - def __init__(self, url, nsamples, **kwargs): - udpsource.__init__(self, url) + def __init__(self, url, dtype, nsamples, **kwargs): + udpsource.__init__(self, url, dtype) + # create buffers for x and y values self.nsamples = nsamples - self.plot = dpg.plot(**kwargs) - - # create buffer and fill with zeroes - self.buffer = RingBuffer(capacity=nsamples, dtype=(float, 2)) - for i in range(nsamples): - # TODO: remove random data used for testing - self.buffer.append(np.array([i, 1 + np.random.rand() / 5])) + self.xvalues = np.arange(0, self.nsamples) + self.yvalues = RingBuffer(capacity=self.nsamples, dtype=np.dtype(dtype)) + self.yvalues.extend(np.zeros(self.nsamples)) + # create a plot + self.plot = dpg.plot(**kwargs) self.bind() + # Map `with' expressions to the underlying plot def __enter__(self): return self.plot.__enter__() @@ -56,13 +72,16 @@ class network_plot(udpsource): self.plot.__exit__(t, val, tb) @property - def x_data(self): - return np.array(self.buffer[:,0]) + def xdata(self): + return self.xvalues @property - def y_data(self): - return np.array(self.buffer[:,1]) + def ydata(self): + return np.array(self.yvalues) def refresh_series(self, tag): - dpg.set_value(tag, [self.x_data, self.y_data]) - pass + new_values = self.read(1) + + if new_values: + self.yvalues.extendleft(new_values) + dpg.set_value(tag, [self.xdata, self.ydata]) |