README.md: improve wording when explaining how to measure parameters

[SaveMySugar/python3-savemysugar.git] / src / savemysugar / CallDistanceTransceiver.py

diff --git a/src/savemysugar/CallDistanceTransceiver.py b/src/savemysugar/CallDistanceTransceiver.py
index f9760bb..f218bcc 100755 (executable)
--- a/src/savemysugar/CallDistanceTransceiver.py
+++ b/src/savemysugar/CallDistanceTransceiver.py
@@ -383,34 +383,63 @@ class CallDistanceTransceiver(object):
 
 def test_send_receive():
     logging.basicConfig(level=logging.DEBUG)
-    call_setup_time = 2
-    call_setup_uncertainty = 0.4
-    ring_time = 1
-    ring_uncertainty = 0.3
+    call_setup_time_min = 0
+    call_setup_time_max = 0.01
+    ring_time_min = 0
+    ring_time_max = 0
+
+    import random
 
     class DummyModem(object):
-        """Always receive a '.' and then a '/', which result in 'E '."""
+        """Always receive a '.', a '/' and then EOM, which results in 'E '."""
 
         def __init__(self):
             self.ring_count = 0
 
+            # Take trasmission times from a transceiver
+            self.transceiver = None
+
+            random.seed(None)
+
         def send_command(self, command):
             pass
 
         def get_response(self, response):
-            if self.ring_count % 2:
+            # pylint: disable=unused-argument
+
+            setup_time = random.uniform(self.transceiver.call_setup_time_min,
+                                        self.transceiver.call_setup_time_max)
+
+            if self.ring_count == 0:
+                # dummy ring
+                pass
+            elif self.ring_count == 1:
                 # received a '.'
-                time.sleep(call_setup_time + (ring_time + ring_uncertainty))
-            else:
+                time.sleep(setup_time + self.transceiver.dot_time.dist)
+            elif self.ring_count == 2:
                 # received a '/'
-                time.sleep(call_setup_time + (ring_time + ring_uncertainty) * 4)
+                time.sleep(setup_time + self.transceiver.wordspace_time.dist)
+            else:
+                # received an 'EOM'
+                time.sleep(setup_time + self.transceiver.eom_time.dist)
 
             self.ring_count += 1
+            self.ring_count %= 4
+
+    modem = DummyModem()
+
+    xcv = CallDistanceTransceiver(modem,
+                                  call_setup_time_min, call_setup_time_max,
+                                  ring_time_min, ring_time_max, True)
+
+    modem.transceiver = xcv
 
-    xcv = CallDistanceTransceiver(DummyModem(), call_setup_time,
-                                  call_setup_uncertainty, ring_time,
-                                  ring_uncertainty)
-    xcv.receive_loop()
+    while True:
+        xcv.receive_loop()
+        modem.ring_count = 0
+        print()
+        print("Message received!")
+        print("\"%s\"" % xcv.get_text(), flush=True)
 
 
 if __name__ == "__main__":