PLL implementation

QAM/OLD/debug2.py

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+import numpy as np
+import matplotlib.pyplot as plt
+from watchdog.observers import Observer
+from watchdog.events import FileSystemEventHandler
+import time
+import os
+
+needs_update = True  # flag global
+
+def plot_constellations(ref_file, rx_file, title="Constellation Comparison", save_path=None):
+    ref_data = np.atleast_2d(np.loadtxt(ref_file))
+    rx_data = np.atleast_2d(np.loadtxt(rx_file))
+    
+    x_ref, y_ref = ref_data[:,0], ref_data[:,1]
+    x_rx, y_rx = rx_data[:,0], rx_data[:,1]
+
+    plt.clf()  # efface la figure précédente
+    plt.scatter(x_ref, y_ref, color='dodgerblue', s=80, marker='o', edgecolors='k', label='Référence')
+    plt.scatter(x_rx, y_rx, color='tomato', s=80, marker='x', alpha=0.6, label='Reçu')
+
+    all_x = np.concatenate([x_ref, x_rx])
+    all_y = np.concatenate([y_ref, y_rx])
+    margin = 0.15 * max(np.ptp(all_x), np.ptp(all_y))
+    plt.xlim(min(all_x)-margin, max(all_x)+margin)
+    plt.ylim(min(all_y)-margin, max(all_y)+margin)
+
+    plt.grid(True, which='both', linestyle='--', linewidth=0.5, alpha=0.7)
+    plt.axhline(0, color='black', linewidth=1)
+    plt.axvline(0, color='black', linewidth=1)
+    plt.xlabel('In-phase (I)', fontsize=12)
+    plt.ylabel('Quadrature (Q)', fontsize=12)
+    plt.title(title, fontsize=14, fontweight='bold')
+    plt.gca().set_aspect('equal', adjustable='box')
+    plt.legend()
+    if save_path:
+        plt.savefig(save_path, dpi=300, bbox_inches='tight')
+    plt.pause(0.1)
+
+class FileChangeHandler(FileSystemEventHandler):
+    def on_modified(self, event):
+        global needs_update
+        if event.src_path.endswith("constellation_ref.dat") or event.src_path.endswith("constellation.dat"):
+            print(f"{event.src_path} modifié")
+            needs_update = True  # on ne fait que signaler
+
+if __name__ == "__main__":
+    ref_file = "constellation_ref.dat"
+    rx_file = "constellation.dat"
+
+    plt.ion()
+    plt.figure(figsize=(7,7))
+    plot_constellations(ref_file, rx_file)
+
+    event_handler = FileChangeHandler()
+    observer = Observer()
+    observer.schedule(event_handler, path=os.path.dirname(os.path.abspath(ref_file)) or '.', recursive=False)
+    observer.start()
+
+    try:
+        while True:
+            if needs_update:
+                plot_constellations(ref_file, rx_file)
+                needs_update = False
+            time.sleep(0.2)  # boucle principale
+    except KeyboardInterrupt:
+        observer.stop()
+    observer.join()
+