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/ble/__init__.py

@@ -108,8 +108,12 @@ while True:
         # print confirmation value
         compare_value = sys_ble.get_compare_value()
         disp.clear()
-        disp.print("confirm:", posy=0, fg=[0, 255, 255])
-        disp.print("%06d" % compare_value, posy=20, fg=[255, 0, 0])
+        disp.print("BLE: Bond?", posy=0, fg=[0, 0, 255])
+        disp.print("Code:", posy=20, fg=[0, 255, 255])
+        disp.print("   %06d" % compare_value, posy=40, fg=[255, 255, 255])
+        disp.print("Yes", posy=60, fg=[0, 255, 0])
+        disp.print("No", posx=120, posy=60, fg=[255, 0, 0])
+
         disp.update()
         state = 4
     elif state == 4:
@@ -117,15 +121,16 @@ while True:
         if ble_event == sys_ble.EVENT_PAIRING_FAILED:
             ble_event = None
             state = 6
-        if v & buttons.BOTTOM_RIGHT:
+        if v & buttons.BOTTOM_LEFT:
             sys_ble.confirm_compare_value(True)
             disp.clear()
-            disp.print("Wait", posy=0, fg=[0, 255, 255])
+            disp.print("BLE Bonding", posy=0, fg=[0, 0, 255])
+            disp.print("Please Wait", posy=40, fg=[255, 255, 255])
             disp.update()
             state = 5
-        elif v & buttons.BOTTOM_LEFT:
+        elif v & (buttons.BOTTOM_RIGHT | buttons.TOP_RIGHT):
             sys_ble.confirm_compare_value(False)
-            state = 1
+            state = 6
 
     elif state == 5:
         # Wait for pairing to complete
@@ -135,7 +140,8 @@ while True:
         elif ble_event == sys_ble.EVENT_PAIRING_COMPLETE:
             ble_event = None
             disp.clear()
-            disp.print("OK", posy=0, fg=[0, 255, 255])
+            disp.print("BLE Bonding", posy=0, fg=[0, 0, 255])
+            disp.print("  Success", posy=40, fg=[0, 255, 0])
             disp.update()
             time.sleep(5)
             state = 1
@@ -143,7 +149,8 @@ while True:
     elif state == 6:
         # display fail screen and wait 5 seconds
         disp.clear()
-        disp.print("Fail", posy=0, fg=[0, 255, 255])
+        disp.print("BLE Bonding", posy=0, fg=[0, 0, 255])
+        disp.print("   Fail", posy=40, fg=[255, 0, 0])
         disp.update()
         time.sleep(5)
         state = 1