Bt monitor

.vscode/settings.json

@@ -1,5 +1,8 @@
 {
     "python.linting.pylintEnabled": false,
     "python.linting.enabled": true,
-    "python.linting.flake8Enabled": true
+    "python.linting.flake8Enabled": true,
+    "files.associations": {
+        "*.yaml": "home-assistant"
+    }
 }

inventory.yml

@@ -12,12 +12,16 @@ all:
           sensor_room_name_ascii: prusaprinter
           sensor_room_name: prusaprinter
           dht_pin: 26
+          main_user: root
         bedroompi:
           squeezelite_name: BedroomPi
           shairport_name: BedroomPi
           alsa_card_name: Codec
           sensor_room_name_ascii: schlafzimmer
           sensor_room_name: Schlafzimmer
+          my_bt_monitor_watchdog_seconds: 600
+          my_btmonitor_restart_ble_interface: hci0
+          main_user: root
         kitchenpi:
           squeezelite_name: KitchenPi
           shairport_name: KitchenPi
@@ -25,6 +29,7 @@ all:
           sensor_room_name_ascii: kueche
           sensor_room_name: Küche
           hifiberry_overlay: hifiberry-amp
+          main_user: root
         esszimmerradio: # oben, eltern
           squeezelite_name: Esszimmer
           shairport_name: _Oben_Esszimmer
@@ -32,6 +37,7 @@ all:
           squeezeserver: 192.168.178.100
           configure_wifi: true
           alsa_card_name: 1
+          main_user: root
         musikserverwohnzimmeroben: # oben, eltern
           squeezelite_name: Wohnzimmer
           shairport_name: _Oben_Wohnzimmer
@@ -40,6 +46,7 @@ all:
           sensor_room_name_ascii: wohnzimmeroben
           sensor_room_name: WohnzimmerOben
           hifiberry_overlay: hifiberry-dacplus
+          main_user: root
         musicmouse:
           squeezelite_name: MusicMouse
           shairport_name: MusicMouse
@@ -47,6 +54,7 @@ all:
           hifiberry_overlay: hifiberry-dacplus
           sensor_room_name: Kinderzimmer
           sensor_room_name_ascii: kinderzimmer
+          main_user: root
         newrpi:
           squeezelite_name: MyTestRaspberry
           shairport_name: MyTestRaspberry
@@ -57,6 +65,9 @@ all:
         server:
           sensor_room_name: Arbeitszimmer
           sensor_room_name_ascii: arbeitszimmer
+          my_bt_monitor_watchdog_seconds: 600
+          my_btmonitor_restart_ble_interface: hci0
+          main_user: core
         homeassistant:
           sensor_room_name: Anschlussraum
           sensor_room_name_ascii: anschlussraum

roles/better-shell-env/tasks/files/dot.fish

@@ -0,0 +1,3 @@
+function dot -w git -d "Manages dotfiles"
+    git --git-dir=$HOME/.dot --work-tree=$HOME $argv
+end

roles/better-shell-env/tasks/main.yml

@@ -0,0 +1,47 @@
+---
+# 
+- name: Install packages
+  apt:
+    name:
+      - bat
+      - broot
+      - duf
+      - fd-find
+      - fish
+      - fzf
+      - git
+      - glances
+      - lsd
+      - neovim
+      - ripgrep
+      - tmux
+      - zoxide
+
+# TODO: Dust, btm
+
+block:
+  become: true
+  become_user: {{main_user}}
+  - name: Create bin folder
+    ansible.builtin.file:
+      path: ~/bin
+      state: directory
+      mode: '0755'
+
+  # Oh-my-fish
+  - name: get oh-my-fish repo
+    git:
+      repo: 'https://github.com/oh-my-fish/oh-my-fish.git'
+      dest: ~/.local/share/git/oh-my-fish
+  - name: install oh-my-fish
+    shell:
+      cmd: "bin/install --offline --noninteractive"
+      executable: /usr/bin/fish
+      chdir: ~/.local/share/git/oh-my-fish
+    creates:
+      - ~/.local/share/omf
+      - ~/.config/omf
+  - copy:
+      content: "bobthefish"
+      dst: "~/.config/omf/theme"
+

roles/bluetooth-monitor/templates/my_btmonitor.py

@@ -4,13 +4,12 @@ from bleak import BleakScanner
 from bleak.assigned_numbers import AdvertisementDataType
 from bleak.backends.bluezdbus.advertisement_monitor import OrPattern
 from bleak.backends.bluezdbus.scanner import BlueZScannerArgs 
-from Cryptodome.Cipher import AES
 from functools import partial
 import asyncio_mqtt
 import json
-from typing import Dict
+from datetime import datetime
-import collections
+import os
-import numpy as np
+import time
 
 # ------------------- Config ----------------------------------------------------------------
 
@@ -21,95 +20,21 @@ config = {
     "password": "{{my_btmonitor_mqtt_password}}",
     "room": "{{sensor_room_name_ascii}}"
   },
-  "irk_to_devicename": {
+  "watchdog_seconds": {{my_bt_monitor_watchdog_seconds | default(None)}},
-    "aa67542b82c0e05d65c27fb7e313aba5": "martins_apple_watch",
+  "restart_ble_interface": {{my_btmonitor_restart_ble_interface | default(None)}},
-    "840e3892644c1ebd1594a9069c14ce0d" : "martins_iphone",
-  }
 }
 
-# --------------------------------------------------------------------------------------------
+stop_event = asyncio.Event()
-
+time_last_package_received = datetime.now()
-def resolve_rpa(rpa: bytes, irk: bytes) -> bool:
-  """Compares the random address rpa to an irk (secret key) and return True if it matches"""
-  assert len(rpa) == 6
-  assert len(irk) == 16
-
-  key = irk
-  plain_text = b'\x00' * 16
-  plain_text = bytearray(plain_text)
-  plain_text[15] = rpa[3]
-  plain_text[14] = rpa[4]
-  plain_text[13] = rpa[5]
-  plain_text = bytes(plain_text)
-
-  cipher = AES.new(key, AES.MODE_ECB)
-  cipher_text = cipher.encrypt(plain_text)
-  return cipher_text[15] == rpa[0] and cipher_text[14] == rpa[1] and cipher_text[13] == rpa[2]
 
 
-def addr_to_bytes(addr:str) -> bytes:
+async def on_device_found_callback(mqtt_client, room, device, advertising_data):
-  """Converts a bluetooth mac address string with semicolons to bytes"""
+  global time_last_package_received
-  str_without_colons = addr.replace(":", "")
+  time_last_package_received = datetime.now()
-  bytearr =  bytearray.fromhex(str_without_colons)
-  bytearr.reverse()
-  return bytes(bytearr)
-
-
-def decode_address(addr: str, irks: Dict[str, str]):
-  """
-  addr is a bluetooth address as a string  e.g. 4d:24:12:12:34:10
-  irks is dict with irk as a hex string, mapping to device name
-  """
-  for irk, name in irks.items():
-    if resolve_rpa(addr_to_bytes(addr), bytes.fromhex(irk)):
-      return name
-  return None
-
-
-def estimate_distance(rssi, tx_power, pl0=73):
-  """
-  RSSI in dBm
-  txPower is a transmitter parameter that calculated according to its physic layer and antenna in dBm
-  Return value in meter
-
-  You should calculate "PL0" in calibration stage:
-  PL0 = txPower - RSSI; // When distance is distance0 (distance0 = 1m or more)
-
-  SO, RSSI will be calculated by below formula:
-  RSSI = txPower - PL0 - 10 * n * log(distance/distance0) - G(t)
-  G(t) ~= 0 //This parameter is the main challenge in achiving to more accuracy.
-  n = 2 (Path Loss Exponent, in the free space is 2)
-  distance0 = 1 (m)
-  distance = 10 ^ ((txPower - RSSI - PL0 ) / (10 * n))
-
-  Read more details:
-     https://en.wikipedia.org/wiki/Log-distance_path_loss_model
-  """
-  n = 3.5
-  return 10**((tx_power - rssi - pl0) / (10 * n))
-
-
-def smooth(y, box_pts):
-    box = np.ones(box_pts)/box_pts
-    y_smooth = np.convolve(y, box, mode='same')
-    return y_smooth
-
-WINDOW_SIZE = 6
-last_values = collections.deque(maxlen=WINDOW_SIZE)
-def filter_distance(dist: float):
-  global last_values
-  last_values.append(dist)
-  return smooth(np.array(last_values), 12)[-1]
-
-
-async def on_device_found_callback(irks, mqtt_client, room, device, advertising_data):
-  #decoded_device_id = decode_address(device.address, irks)
   rssi = advertising_data.rssi
   tx_power = advertising_data.tx_power
   if  tx_power is not None and rssi is not None:
     topic = f"my_btmonitor/raw_measurements/{room}"
-    #distance = estimate_distance(rssi, tx_power, {{my_btmonitor_pl0 | default('73')}} )
-    #filtered_distance = filter_distance(distance)
     data = {"address": device.address,
             "rssi": rssi, 
             "tx_power": tx_power}
@@ -118,19 +43,28 @@ async def on_device_found_callback(irks, mqtt_client, room, device, advertising_
     except Exception:
       print("Probably mqtt isn't running - exit whole script and let systemd restart it")
       exit(1)
-    #print(data)
 
 
-async def main():
+async def watchdog():
-    stop_event = asyncio.Event()
+  global time_last_package_received
+  timeout = config["watchdog_seconds"]
+  if not timeout or timeout <= 0:
+    return
+  while True:
+    restart = (datetime.now() - time_last_package_received).seconds > timeout
+    if restart:
+      stop_event.set()
+    await asyncio.sleep(60) 
 
+
+async def ble_scan():
     mqtt_conf = config['mqtt']
     while True:
       try:
         async with asyncio_mqtt.Client(hostname=mqtt_conf["hostname"], 
                                        username=mqtt_conf["username"], 
                                        password=mqtt_conf['password']) as mqtt_client:
-          cb = partial(on_device_found_callback, config['irk_to_devicename'], mqtt_client, mqtt_conf['room'])
+          cb = partial(on_device_found_callback, mqtt_client, mqtt_conf['room'])
           active_scan = True
           if active_scan:
             async with BleakScanner(cb) as scanner:
@@ -146,4 +80,18 @@ async def main():
         print("Error", e)              
         print("Starting again")
 
-asyncio.run(main())
+
+async def main():
+  await asyncio.gather(ble_scan(), watchdog())
+
+
+if __name__ == "__main__":
+  restart_interface = config["restart_ble_interface"]
+  if restart_interface:
+    print(f"Restarting {restart_interface}")
+    os.system(f"hciconfig {restart_interface} down")
+    time.sleep(3)
+    os.system(f"hciconfig {restart_interface} up")
+    time.sleep(3)
+    print("Done")
+  asyncio.run(main())

roles/pi-better-shell-env/tasks/main.yml

@@ -1,36 +0,0 @@
----
-- name: Install packages
-  apt:
-    name:
-      - bat
-      - fish
-      - fzf
-      - fd-find
-      - ripgrep
-      - lsd
-      - zoxide
-
-- name: Check if oh-my-fish is installed
-  stat:
-    path: '/etc/omf.installed'
-  register: omf
-
-- name: Download omf installer
-  get_url: 
-    url: https://raw.githubusercontent.com/oh-my-fish/oh-my-fish/master/bin/install
-    
-- name: Execute omf installer
-  shell: /usr/bin/fish /tmp/install --noninteractive
-
-- name: Execute omf installer
-  shell: /usr/bin/fish -c omf install
-
-- name: Remove the omf installer
-  file: 
-    path: /tmp/install
-    state: absent
-
-- name: Mark oh-my-fish installed with /etc/omf.installed
-  file:
-    path: /etc/omf.installed
-    state: touch

todo.md

@@ -23,3 +23,13 @@ dpkg-buildpackage -b -uc
 [General]
 Discoverable=false
 Alias=bla
+
+
+Environment:
+- fish 
+  - apt install fish
+- oh my fish
+- fish config
+- ripgrep (apt install ripgrep)
+- fd (apt install fd-find) 
+- apt install neovim tmux fd-find ripgrep lsd broot fzf tmux glances