Show COVID-19 exposure notification statistics

Based on !390 (merged)

Displays how many unique MACs (aka phones) which send exposure notifications have been seen during the last 100 seconds.

It tries to distinguish between Apple and Google devices based on a heuristic mentioned in https://github.com/znuh/microbit-corona-scanner. The user can choose if they want the LEDs and/or the vibration motor to show newly discovered MACs / exposure notifications.

Loosely based on:

• https://github.com/kauzu/CoronaAppDetector
• https://github.com/frankrieger/CoronaAppDetectorM5StickC
• https://github.com/znuh/microbit-corona-scanner

Most of the logic resides in a plain Python script and can be modified by the user as needed.

preload/apps/en_count/__init__.py

@@ -16,9 +16,10 @@ TIMEOUT = 100
 MODE_OFF = 0
 MODE_ON_NEW_MAC = 1
 MODE_ON_RX = 2
+MODE_BOTH = 2
 
 seen = {}
-vib_mode = MODE_ON_NEW_MAC
+vib_mode = MODE_OFF
 led_mode = MODE_OFF
 
 
@@ -47,17 +48,17 @@ def bytes2hex(bin, sep=""):
 
 def process_covid_data(mac, service_data, rssi, flags):
     global vib_mode
-    if vib_mode == MODE_ON_RX:
+    if vib_mode in [MODE_ON_RX, MODE_BOTH]:
         vibra.vibrate(10)
 
-    if vib_mode == MODE_ON_NEW_MAC and mac not in seen:
+    if vib_mode in [MODE_ON_NEW_MAC, MODE_BOTH] and mac not in seen:
         vibra.vibrate(100)
 
-    if led_mode == MODE_ON_RX:
-        leds.flash_rocket(0, 31, 10)
+    if led_mode in [MODE_ON_RX, MODE_BOTH]:
+        leds.flash_rocket(0, 31, 20)
 
-    if led_mode == MODE_ON_NEW_MAC and mac not in seen:
-        leds.flash_rocket(1, 31, 100)
+    if led_mode in [MODE_ON_NEW_MAC, MODE_BOTH] and mac not in seen:
+        leds.flash_rocket(1, 31, 200)
 
     print(bytes2hex(mac, ":"), rssi, bytes2hex(service_data), flags)
 
@@ -174,6 +175,11 @@ while True:
             vib_mode = MODE_ON_RX
             disp.print("Each RX", posy=40, fg=color.BLUE)
         elif vib_mode == MODE_ON_RX:
+            vib_mode = MODE_BOTH
+            disp.print("MAC", posy=40, fg=color.YELLOW)
+            disp.print("&", posy=40, posx=14 * 4, fg=color.WHITE)
+            disp.print("RX", posy=40, posx=14 * 6, fg=color.BLUE)
+        elif vib_mode == MODE_BOTH:
             vib_mode = MODE_OFF
             disp.print("Vib off", posy=40, fg=color.WHITE)
 
@@ -190,6 +196,11 @@ while True:
             led_mode = MODE_ON_RX
             disp.print("Each RX", posy=40, fg=color.BLUE)
         elif led_mode == MODE_ON_RX:
+            led_mode = MODE_BOTH
+            disp.print("MAC", posy=40, fg=color.YELLOW)
+            disp.print("&", posy=40, posx=14 * 4, fg=color.WHITE)
+            disp.print("RX", posy=40, posx=14 * 6, fg=color.BLUE)
+        elif led_mode == MODE_BOTH:
             led_mode = MODE_OFF
             disp.print("LED off", posy=40, fg=color.WHITE)