1 files changed, 161 insertions, 0 deletions
diff --git a/gr-msdd6000/src/python_test/udp_stream_rate_test_plot.py b/gr-msdd6000/src/python_test/udp_stream_rate_test_plot.py
new file mode 100644
index 000000000..eef78f51b
--- /dev/null
+++ b/gr-msdd6000/src/python_test/udp_stream_rate_test_plot.py
@@ -0,0 +1,161 @@
+#!/usr/bin/python
+
+from socket import *
+import string
+import time
+import struct;
+from random import *;
+import array;
+import cmath;
+from numpy import *;
+from numpy.fft import *;
+from pylab import *;
+
+myport = randint(1025,65535);
+filename = "output.dat";
+
+msdd_port = 10001
+msdd_host = "10.45.4.46"
+
+buf = 100000;
+
+my_udp_addr = ('',randint(1025,65535));
+
+UDPSock = socket(AF_INET,SOCK_DGRAM);
+UDPSock.bind(my_udp_addr);
+
+f_mhz = 2500;	
+
+print "fc = %d"%(f_mhz);
+
+f_hz = 0;	
+gain = 20; 	# attenuation
+window = 3; 	#0=rect, 1=hanning, 2=hamming, 3=blackman
+
+samples = 65535*4*2;
+#samples = 16384;
+#samples = 16*1024*1024;
+#samples = samples*4; 	#bytes of data we are requesting
+
+# decim 0-8 ( 3 - 8 )
+#decim = 5;	# rate ok
+decim = 8;
+decim = decim+16;	# +16 to use 16bit floats instead of 32 bit floats
+mode = 0; 	#0=IQ, 1=MAG, 2=MAGDB
+#sets = 0;
+sets = 0xffffffff;
+
+size_int = 4;
+request_len = 6*size_int;	# 6 int items not including the 8 bytes for opcode and length fields
+print "request len = %d"%(request_len);
+
+raw_data = struct.pack("<IIIIIIII", 0x01, request_len, f_mhz, f_hz, gain, samples, decim, sets);
+
+data = raw_data;
+
+UDPSock.sendto(data, (msdd_host, msdd_port));
+
+print "sent"
+
+
+
+count = 0;
+
+total_data = [];
+
+state = 0;
+
+vals = [];
+mags = [];
+re = [];
+
+sample_count = 0;
+IQ_bytes=0;
+
+
+numtocap = 1000;
+IQ_bytes = 4 * numtocap;
+
+numbytes = 65536*100;
+#numbytes = 65536*2;
+#numbytes = 1024;
+
+num_rx = 0;
+start =  time.time();
+l = [];
+arr = [];
+
+while(num_rx < numbytes):
+	data = UDPSock.recv(1024);
+	l.append(data);
+	num_rx = num_rx + len(data);
+
+
+end = time.time();
+
+# send stop command
+halt_data = struct.pack(">II", 0x04, 0x00);
+UDPSock.sendto(halt_data, (msdd_host, msdd_port));
+
+# perform timing analysis
+print "recieved %d bytes in %f sec"%(numbytes, end-start);
+bytes_per_sec = numbytes / (end-start);
+samples_per_sec = bytes_per_sec / 4;
+MSPS = samples_per_sec / 1000000.0;
+
+print "Got %f MSPS"%(MSPS);
+print "Expected %f MSPS"%(102.4/math.pow(2,(decim-16)));
+
+
+# plot data
+val_arr = [];
+mag_arr = [];
+mag_arr2 = [];
+
+print "Repacking data..."
+f = open("out.dat","w");
+for li in l:
+	for p in range(0, len(li)/4):
+		[i,q] = struct.unpack_from("<hh", li, p*4);
+		val = complex(i,q);
+		mag_arr.append((val*conj(val)).real);
+		val_arr.append(val);
+	        binchunk = struct.pack("<ff",float(val.real), float(val.imag) );
+		f.write(binchunk);
+f.close();
+		
+
+dlen = len(val_arr)-1;
+fft_data = [];
+for i in range(1, dlen-1024, 1024*1024):
+
+        t_in = [];
+        for ind in range(i, i+1024):
+                t_in.append(val_arr[ind]);
+
+        tmp = 20*log10(fftshift(fft(t_in)));
+        #tmp = (fftshift(fft(t_in)));
+
+        if(len(fft_data) == 0):
+                for ind in range(0,1024):
+                        fft_data.append( tmp[ind] );
+        else:
+                for ind in range(0,1024):
+                        fft_data[ind] = fft_data[ind] + tmp[ind];
+
+
+
+
+print "Plotting..."
+subplot(2,1,1);
+plot(mag_arr);
+title("T power");
+subplot(2,1,2);
+plot(10*log10(fft_data));
+title("PSD");
+show();
+
+
+
+UDPSock.close();
+