Maxime-Favier · May 29, 2025 14:43 · May 29, 2025
diff --git a/spectrumLab.py b/spectrumLab.py
@@ -0,0 +1,44 @@
+import socket, time, math, struct
+import numpy as np
+import serial
+
+UDP_IP = "127.0.0.1"
+UDP_PORT = 6999
+
+SAMPLE_RATE = 48000
+PACKET_SIZE = 10000
+PACKET_DURATION = PACKET_SIZE/SAMPLE_RATE
+print("Packet duration=", PACKET_DURATION)
+SINE_FREQUENCY = 1000
+AMPLITUDE = 0.5
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+sock.bind(("0.0.0.0", UDP_PORT+1))
+#ser = serial.Serial('COM19', 921600, timeout=0)
+current_phase = 0
+
+print("starting udp stream")
+try:
+    while True:
+        t = np.linspace(current_phase, current_phase+PACKET_DURATION, PACKET_SIZE, endpoint=None)
+        #print(t)
+        sample_float = AMPLITUDE * np.sin(2*math.pi*SINE_FREQUENCY*t)
+        current_phase += PACKET_DURATION
+        sample_int16 = np.int16(sample_float*32767)
+        packed_data = struct.pack("<"+str(PACKET_SIZE)+"h",*sample_int16)
+        #print(packed_data)
+        #print(len(packed_data))
+        sock.sendto(packed_data,(UDP_IP, UDP_PORT))
+        #ser.write(packed_data)
+        time_to_sleep = PACKET_DURATION
+        if time_to_sleep > 0:
+            #print(time_to_sleep)
+            time.sleep(0.2)
+            pass
+
+except KeyboardInterrupt:
+    print("stopping")
+    pass
+finally:
+    sock.close()
+    #ser.close()