raspberry

raspberry/python/recieve_all.py

@@ -0,0 +1,29 @@
+from RPi import GPIO
+import time, argparse
+import numpy as np
+parser = argparse.ArgumentParser(description='Analyze RF signal for Nexa codes')
+parser.add_argument('-g', dest='gpio', type=int, default=27, help='GPIO pin (Default: 27)')
+parser.add_argument('-s', dest='secs', type=int, default=3, help='Seconds to record (Default: 3)')
+parser.add_argument('--raw', dest='raw', action='store_true', default=False, help='Output raw samples')
+parser.add_argument('-f', dest='file',default="data.npy", help='Data file (Default: data.npy)')
+
+args = parser.parse_args()
+
+times = []
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(args.gpio, GPIO.IN)
+GPIO.add_event_detect(args.gpio, GPIO.BOTH,
+        callback=lambda ch: times.append(time.perf_counter_ns()//1000))
+
+time.sleep(args.secs)
+GPIO.remove_event_detect(args.gpio)
+GPIO.cleanup()
+
+# Calculate difference between consecutive times
+diff = [b-a for a,b in zip(times, times[1:])]
+
+
+np.save(args.file, diff)
+if args.raw: # Print a raw dump
+    for d in diff: print(d, end='\n' if d>5e3 else ' ')