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code.py
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code.py
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"""
Secret Plan #421: Contact Counter
by Eric and Sue Johnston, [email protected]
3 July 2020
This program was written for the Adafruit C.P. Bluefruit
Line a radiation exposure badge worn by powerplant workers,
it measures exposure to close-range contact with other people
(actually their Bluetooth gizmos). It's not precise, but it's
useful.
The counter reports the number of unique Bluetooth contacts, so:
Sitting at home all day: 10
Walking around town with friends: 300
Rock concert or baseball game: 10,000
The hope is that these numbers can help evaluate risk of
contracting and spreading diseases such as influenza and COVID-19
License:
This software is free (like free speech AND free beer)
It was built partially from awesome scraps and samples,
which can be found in the "references" folder. Thx for those!
Do anything you like with this, but please use for good.
If you use it, drop us a note and say hi!
There is no warranty at all, use at your own risk.
"""
import gc
print('////100///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import time
print('////101///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import board
print('////102///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import os
print('////103///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
def addr_to_hex(addr):
return ''.join('{:02x}:'.format(x) for x in reversed(addr))[:-1]
def addrs_to_hex(addrs):
return [addr_to_hex(addr) for addr in addrs]
def btprint(text):
print(text)
if radio is not None and radio.connected:
uart_server.write((text+'\n').encode())
def get_file_size(filename):
return os.stat(filename)[6]
def make_thumbprint(contact):
keys = sorted(list(contact.data_dict.keys()))
sizes = [len(contact.data_dict[k]) for k in keys]
return bytes([contact.address.type] + keys + sizes)
is_feather = not hasattr(board, 'D4')
radio = None
print('////1010///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
def main():
"""
Initialize the modules, and then loop forever.
"""
btprint('free memory at startup: {}k'.format(int(gc.mem_free() // 1024)))
contact_counter = ContactCounts()
bt_module = BluetoothModule()
neo_module = NeopixelModule()
eink_module = EInkModule(contact_counter)
buttons = ButtonsModule()
while True:
contact_counter.periodic_update(buttons, neo_module, eink_module)
bt_module.periodic_update(contact_counter, buttons)
gc.collect()
neo_module.periodic_update(contact_counter, buttons)
eink_module.periodic_update(contact_counter, buttons)
contact_counter.debug_print(buttons)
gc.collect()
time.sleep(0.25)
print('////1020///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
##################################################################
## Settings: common adjustables for this program
# the rssi is the signal strength. Play with this until
# you like the distance things are triggering
setting_bt_rssi = -80 # -80 is good, -20 is very close, -120 is very far away
setting_bt_timeout = 1.0 # scan for this many seconds each time
setting_end_encounter_time = 5 * 60 # End an encounter after this many seconds of not seeing the device
##################################################################
## ContactCounts is the class which tracks the main counting data
#import storage
class Encounter:
'''
An encounter is a period of contact with someone else's device
'''
def __init__(self, is_new_device, hopper_thumbprint):
self.first_seen = time.monotonic() # When did this contact start
self.last_seen = time.monotonic() # When did we last see this device
self.contact_duration = 0.0 # Integration over time
self.dial_time = 0 # time reported on contact dials
self.is_new_device = is_new_device # First contact for this device
self.thumbprint = hopper_thumbprint # to help identify hopper-buddies
self.is_home_device = False # These devices don't get counted
print('////1030///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class Bloom:
'''
The bloom is a structure which tracks whether or not we've seen an address before
'''
def __init__(self, filename):
self.filename = filename
self.do_verify = False
self.bits = bytearray(24 * 1024)
self.clear()
self.load_at_startup()
def load_at_startup(self):
# try to load the data
try:
size0 = get_file_size(self.filename)
assert size0 == len(self.bits), 'bad file size = {}'.format(size0)
with open(self.filename,'rb') as f:
rsize = 256
pos = 0
while pos < len(self.bits):
data = f.read(rsize)
self.bits[pos:pos+rsize] = data
pos += rsize
btprint('Loaded bloom file ok')
except Exception as ex:
btprint('Unable to load bloom file, creating new: {}'.format(ex))
self.save()
def save(self, byte_list=None):
if byte_list is None:
try:
with open(self.filename,'wb') as f:
f.write(self.bits)
btprint('Saved complete bloom file')
except Exception as ex:
btprint('Unable to save full bloom file: {}'.format(ex))
else:
try:
with open(self.filename,'rb+') as f:
for pos in byte_list:
f.seek(pos)
f.write(self.bits[pos:pos+1])
btprint('Saved bloom bytes: {}'.format(byte_list))
except Exception as ex:
btprint('Unable to save partial bloom file: {}'.format(ex))
self.verify()
def verify(self):
if self.do_verify:
try:
test_size = 256
test_offset = 0
with open(self.filename,'rb') as f:
while test_offset < len(self.bits):
chk = f.read(test_size)
assert chk == self.bits[test_offset:test_offset+test_size],'verify mismatch'
test_offset += test_size
btprint('Verified bloom file ok')
except Exception as ex:
btprint('Unable to verify bloom file: {}'.format(ex))
def clear(self):
for i in range(len(self.bits)):
self.bits[i] = 0
def add(self, addr):
update_bytes = []
is_new = False
for field in range(3):
bit_index = (addr[field * 2] << 8) | addr[field * 2 + 1]
pos = (bit_index >> 3) + field * 8192
mask = 1 << (bit_index & 7)
if (self.bits[pos] & mask) == 0:
self.bits[pos] |= mask
update_bytes.append(pos)
is_new = True
if is_new:
self.save(update_bytes)
return is_new
print('////1040///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class HistoryBar:
def __init__(self, filename):
self.filename = filename
self.num_columns = 8 * 15 # one column every 4 minutes for 8 hours
self.data = bytearray(self.num_columns * 2)
self.update_period = 60#4 * 60
self.draw_period = 4*60#4 * 60
self.start_index = 0
self.last_update_time = time.monotonic()
self.last_draw_time = time.monotonic()
self.load_at_startup()
def periodic_update(self, cc):
t = time.monotonic()
if t - self.last_update_time > self.update_period:
self.last_update_time = t
count_to_display = 0
for enc in cc.current_encounters.values():
if t - enc.last_seen < self.update_period:
if not enc.is_home_device:
count_to_display += 1
next_index = self.start_index
self.start_index += 1
self.start_index %= self.num_columns
self.set_value(next_index, count_to_display)
self.save()
btprint('updated historybar {} {}'.format(next_index,count_to_display))
def draw(self, eink):
btprint('drawing historybar...')
t = time.monotonic()
self.last_draw_time = t
x = (eink.width - self.num_columns) >> 1
y = 16
w = self.num_columns
h = 32
tw = 6
th = 8
basey = y + h - 1
d = eink.display
d.fill_rect(x, y, w, h, Adafruit_EPD.WHITE)
d.fill_rect(x-1, basey, w+2, 1, Adafruit_EPD.BLACK)
maxval = 0
for i in range(self.num_columns):
maxval = max(maxval, self.get_value(i))
if maxval > 0:
if maxval < 10:
maxval = 10
scale = h / maxval
if scale < 1.0:
scale = 1.0
for i in range(self.num_columns):
dx = (i + self.num_columns - self.start_index) % self.num_columns
dsize = int(scale * self.get_value(i))
if dsize:
d.fill_rect(x+dx, basey - dsize, 1, dsize, Adafruit_EPD.BLACK)
maxtext = '{}'.format(int(maxval))
d.text(maxtext, x+w-tw*len(maxtext), y, Adafruit_EPD.BLACK)
d.text('2 hours', x, y + h + 1, Adafruit_EPD.BLACK)
eink.add_dirty_rect((x-1,y,w+2,h + th + 1))
def draw_update(self, eink):
t = time.monotonic()
if t - self.last_draw_time > self.draw_period:
self.draw(eink)
def set_value(self, index, value):
i = index << 1
self.data[i] = value & 0xff
self.data[i + 1] = (value >> 8) & 0xff
def get_value(self, index):
i = index << 1
return self.data[i] | (self.data[i + 1] << 8)
def load_at_startup(self):
# try to load the data
try:
with open(self.filename,'rb') as f:
in_bytes = f.read()
if len(in_bytes) == len(self.data):
for i in range(len(self.data)):
self.data[i] = in_bytes[i]
btprint('Loaded historybar file ok')
except Exception as ex:
btprint('Unable to load historybar file: {}'.format(ex))
def save(self, index_list=None):
try:
si = self.start_index << 1
with open(self.filename,'wb') as f:
f.write(self.data[si:])
if si > 0:
f.write(self.data[:si])
btprint('Saved historybar file')
except Exception as ex:
btprint('Unable to save full historybar file: {}'.format(ex))
print('////1050///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class DoubleLager:
def __init__(self):
self.log_file_max_size = 1024 * 100
self.filenames = ['/data_log0.txt', '/data_log1.txt']
self.log_index = 0
try:
size0 = get_file_size(self.filenames[0])
if size0 >= self.log_file_max_size:
self.log_index = 1
except:
pass
def log_add_contact(self, big_number, addr, contact, hop_type):
line = 'add,{},{},{},{},{}'.format(int(time.monotonic()), big_number,
addr_to_hex(addr), int(contact.is_new_device), hop_type)
self.log_str(line)
print('log: ' + line)
def log_hop_contact(self, big_number, old_addr, new_addr, contact):
line = 'hop,{},{},{},{}'.format(int(time.monotonic()), big_number,
addr_to_hex(old_addr) + '->' + addr_to_hex(new_addr),
int(contact.is_new_device))
self.log_str(line)
print('log: ' + line)
def log_del_contact(self, big_number, addr, contact):
line = 'del,{},{},{},{},{},{},{}'.format(int(time.monotonic()), big_number,
addr_to_hex(addr), int(contact.is_new_device),
int(contact.first_seen), int(contact.last_seen),
int(contact.contact_duration))
self.log_str(line)
print('log: ' + line)
def log_startup(self, big_number):
line = 'startup,{},{}'.format(int(time.monotonic()), big_number)
self.log_str(line)
print('log: ' + line)
def log_str(self, line):
'''write a string to the log'''
try:
with open(self.filenames[self.log_index],'a') as f:
if f.tell() <= self.log_file_max_size:
f.write(line+'\n')
else:
self.log_index = (self.log_index + 1) & 1
with open(self.filenames[self.log_index],'w') as f2:
f2.write(line+'\n')
except Exception as ex:
btprint('failed to write log: {}'.format(ex))
def log_dump(self, bt=None):
'''Read the logs out to stdout and bt-connect'''
for i in range(2):
index = (self.log_index + i + 1) & 1
try:
with open(self.filenames[index],'r') as f:
btprint(self.filenames[index])
for line in f:
btprint(line.strip())
except Exception as ex:
btprint('failed to read log: {}'.format(ex))
print('////1060///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class ContactCounts:
def __init__(self):
self.startup_time = time.monotonic()
self.home_count_begin = time.monotonic()
self.current_encounters = {}
self.homies = set() # addresses of home devices we don't need to count
self.check_for_hoppers = True
self.persistent_data = {'unique_counts':0, 'sample_seconds':0, '5min':0, '30min':0, '2hour':0}
self.count_file_name = '/data_counter.txt'
self.need_save = False
self.is_low_power = False
self.bloom = Bloom('/data_bloom.bin')
self.reset_counts_to_zero()
self.load_persistent_counter_data_at_startup()
self.reset_button_hold_timer = 0
self.history_bar = HistoryBar('/data_historybar.bin')
self.lager = DoubleLager()
self.lager.log_startup(self.get_total_unique())
# self.histogram = Histogram('/histogram.bin')
def update_dials(self):
# TODO simplify this
for addr,enc in self.current_encounters.items():
if not enc.is_home_device:
total_time = enc.last_seen - enc.first_seen
t = 5 * 60
if enc.dial_time < t and total_time >= t:
self.persistent_data['5min'] += 1
self.need_save = True
t = 30 * 60
if enc.dial_time < t and total_time >= t:
self.persistent_data['5min'] = max(0, self.persistent_data['5min'] - 1)
self.persistent_data['30min'] += 1
self.need_save = True
t = 120 * 60
if enc.dial_time < t and total_time >= t:
self.persistent_data['30min'] = max(0, self.persistent_data['30min'] - 1)
self.persistent_data['2hour'] += 1
self.need_save = True
enc.dial_time = total_time
def periodic_update(self, buttons, neo_module=None, eink_module=None):
self.update_dials()
self.scan_serial_number += 1
if self.history_bar is not None:
self.history_bar.periodic_update(self)
self.history_bar.draw_update(eink_module)
if self.need_save:
self.save_persistent_data()
self.need_save = False
# enggage power saver
if buttons.switch() != self.is_low_power:
self.set_low_power(buttons.switch(), neo_module, eink_module)
# hold both buttons down to reset counts
if buttons.left() and buttons.right():
self.reset_button_hold_timer += 1
if self.reset_button_hold_timer > 3:
if neo_module:
neo_module.set_all((0,64,255))
time.sleep(0.25)
neo_module.set_all((0,0,0))
self.reset_counts_to_zero()
self.save_persistent_data()
if self.bloom:
self.bloom.clear()
self.bloom.save()
self.reset_button_hold_timer = 0
else:
self.reset_button_hold_timer = 0
def set_low_power(self, low_power, neo_module=None, eink_module=None):
self.is_low_power = low_power
if self.is_low_power:
print('(switch to low power mode)')
else:
print('(switch to high power mode)')
if neo_module:
neo_module.set_low_power(low_power)
if eink_module:
eink_module.set_low_power(low_power)
def reset_counts_to_zero(self):
self.current_encounters.clear()
self.sample_last_time = self.sample_start_time = time.monotonic()
self.scan_serial_number = 0
self.persistent_data['unique_counts'] = 0
self.persistent_data['sample_seconds'] = 0
self.persistent_data['5min'] = 0
self.persistent_data['30min'] = 0
self.persistent_data['2hour'] = 0
self.home_count_begin = time.monotonic()
def check_if_new(self, addr):
is_new = True
if self.bloom:
is_new = self.bloom.add(addr)
return is_new
def in_home_mode(self):
home_count_minutes = 2 # stay in home mode for this many minutes after startup or reset
return time.monotonic() < self.home_count_begin + 60 * home_count_minutes
def new_encounter(self, new_bloom, thumbprint):
if new_bloom and not self.in_home_mode():
self.persistent_data['unique_counts'] += 1
self.need_save = True
return Encounter(new_bloom, thumbprint)
def get_total_unique(self):
return self.persistent_data['unique_counts']
def update_contacts(self, new_contacts):
# for i,nc in enumerate(new_contacts):
# print(i,nc)
# print(' ',i,nc.__dict__)
# # print(' raw:',i,len(nc.advertisement_bytes),nc.advertisement_bytes)
# atype = '?'
# if nc.address.type == _bleio.Address.PUBLIC:
# atype = 'Public'
# elif nc.address.type == _bleio.Address.RANDOM_STATIC:
# atype = 'Static'
# elif nc.address.type == _bleio.Address.RANDOM_PRIVATE_RESOLVABLE:
# atype = 'Resolvable'
# elif nc.address.type == _bleio.Address.RANDOM_PRIVATE_NON_RESOLVABLE:
# atype = 'Hopper'
# print(' addr_type:',nc.address.type,atype)
this_time = time.monotonic()
delta_time = this_time - self.sample_last_time
self.persistent_data['sample_seconds'] += this_time - self.sample_last_time
# update times for old contacts
new_addrs = {nc.address.address_bytes:nc for nc in new_contacts}
# print('new_addrs:',new_addrs)
old_hoppers = {}
for addr in list(self.current_encounters.keys()):
encounter = self.current_encounters[addr]
if addr in new_addrs:
encounter.last_seen = this_time
encounter.contact_duration += delta_time
if encounter.thumbprint:
encounter.thumbprint = make_thumbprint(new_addrs[addr])
del new_addrs[addr]
else:
if this_time > encounter.last_seen + setting_end_encounter_time:
self.lager.log_del_contact(self.get_total_unique(), addr, self.current_encounters[addr])
del self.current_encounters[addr]
else:
if encounter.thumbprint:
old_hoppers[addr] = encounter
# print('eek',new_contacts)
# now for any addresses which are new, create/migrate contacts
for addr,nc in new_addrs.items():
is_hopper = nc.address.type == _bleio.Address.RANDOM_PRIVATE_RESOLVABLE or nc.address.type == _bleio.Address.RANDOM_PRIVATE_NON_RESOLVABLE
if is_hopper:
encounter = None
thumbprint = make_thumbprint(nc)
for haddr,hopper in old_hoppers.items():
if hopper.thumbprint == thumbprint:
# migrate the hopper
del old_hoppers[haddr]
del self.current_encounters[haddr]
encounter = hopper
new_type = 'migrated hopper'
break
if encounter is None:
new_type = 'new hopper'
encounter = self.new_encounter(True, thumbprint)
else:
new_bloom = self.check_if_new(addr) and not addr in self.homies
new_type = 'new static' if new_bloom else 'known static'
encounter = self.new_encounter(new_bloom, None)
if self.in_home_mode():
encounter.is_home_device = True
if not is_hopper:
self.homies.add(addr)
else:
if addr in self.homies:
encounter.is_home_device = True
self.lager.log_add_contact(self.get_total_unique(), addr, encounter, new_type)
self.current_encounters[addr] = encounter
encounter.last_seen = this_time
encounter.contact_duration += this_time - self.sample_last_time
self.sample_last_time = this_time
def load_persistent_counter_data_at_startup(self):
try:
with open(self.count_file_name,'r') as f:
# eval is unsafe, but here it's ok
self.persistent_data.update(eval(f.read()))
print('loaded data:',self.count_file_name,self.persistent_data)
except Exception as ex:
print('no data to load',ex)
def save_persistent_data(self):
try:
with open(self.count_file_name,'w') as f:
f.write(str(self.persistent_data))
print('saved data:',self.count_file_name,self.persistent_data)
except Exception as ex:
print('failed to save data',ex)
def timestr(self, t):
t = int(t)
days = t // (60 * 60 * 24)
hrs = (t // (60 * 60)) % 24
mins = (t // 60) % 60
secs = t % 60
return '{}d {}h {}m {}s'.format(days, hrs, mins, secs)
def debug_print(self, buttons):
self.current_debug_out = 'scan {}: {}/{} contacts t={} free-mem:{}'.format(self.scan_serial_number,
len(self.current_encounters), self.persistent_data['unique_counts'],
self.timestr(self.persistent_data['sample_seconds']),
gc.mem_free())
if not self.is_low_power:
print(self.current_debug_out)
if buttons.left():
print('Left button is down')
if buttons.right():
print('Right button is down')
# if buttons.switch():
# print('Switch is to the left')
##
##################################################################
print('////1070///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
##################################################################
## Buttons section: If you're not using buttons,
## you can just delete this whole section
class ButtonsModule:
def __init__(self):
if is_feather:
self.left_button = None # TODO
self.right_button = None
self.slide_switch = None
else:
self.left_button = digitalio.DigitalInOut(board.D4)
self.right_button = digitalio.DigitalInOut(board.D5)
self.slide_switch = digitalio.DigitalInOut(board.D7)
self.left_button.switch_to_input(pull=digitalio.Pull.DOWN)
self.right_button.switch_to_input(pull=digitalio.Pull.DOWN)
self.slide_switch.switch_to_input(pull=digitalio.Pull.UP)
def left(self):
if self.left_button is None:
return False
return self.left_button.value
def right(self):
if self.right_button is None:
return False
return self.right_button.value
def switch(self):
if self.slide_switch is None:
return False
return self.slide_switch.value
## (end of Buttons section)
##################################################################
##################################################################
## Bluetooth section: If you're not using Bluetooth,
## you can just delete this whole section
print('////1100///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import _bleio
print('////1101///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import adafruit_ble # mem: 11k
print('////1102///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
from adafruit_ble.advertising.standard import ProvideServicesAdvertisement # mem: 3k
print('////1103///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
from adafruit_ble.services.nordic import UARTService # mem: 2k
print('////1104///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
from adafruit_bluefruit_connect.packet import Packet
print('////1105///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
# Only the packet classes that are imported will be known to Packet.
# from adafruit_bluefruit_connect.color_packet import ColorPacket
# class CounterAd(adafruit_ble.Advertisement):
# """Custom class to keep the original bytes."""
# def __init__(self):
# pass
# @classmethod
# def from_entry(cls, entry):
# self = cls()
# self.data_dict = {}
# self.raw_bytes = entry.advertisement_bytes
# self.address_type = entry.address.type
# self.address_bytes = entry.address.address_bytes
# self._rssi = entry.rssi
# return self
class BluetoothModule:
def __init__(self):
global radio
radio = self.radio = adafruit_ble.BLERadio()
# set up Bluefruit Connect
self.uart_server = UARTService()
self.advertisement = ProvideServicesAdvertisement(self.uart_server)
self.was_connected = False
self.radio.start_advertising(self.advertisement)
if is_feather:
self.small_led = digitalio.DigitalInOut(board.D3)
else:
self.small_led = digitalio.DigitalInOut(board.D13)
self.small_led.direction = digitalio.Direction.OUTPUT
def periodic_update(self, cc, buttons):
self.small_led.value = False
#t1 = time.monotonic()
scan_result = self.radio.start_scan(timeout=setting_bt_timeout,
minimum_rssi=setting_bt_rssi)
#t2 = time.monotonic()
items = list(scan_result)
#t3 = time.monotonic()
#print(t2-t1, t3-t2, len(items))
cc.update_contacts(list(items))
self.small_led.value = True
# update Bluefruit Connect
if self.radio.connected:
self.was_connected = True
# packet = Packet.from_stream(self.uart_server)
# if isinstance(packet, ColorPacket):
# print(packet.color)
# INCOMING (RX) check for incoming text
if self.uart_server.in_waiting:
raw_bytes = self.uart_server.read(self.uart_server.in_waiting)
text = raw_bytes.decode().strip()
# print("raw bytes =", raw_bytes)
btprint("RX: {}".format(text))
if '143.all' in text:
t = time.monotonic()
order = sorted([(c.first_seen, addr) for addr,c in cc.current_encounters.items()])
for i,o in enumerate(order):
addr = o[1]
enc = cc.current_encounters[addr]
first = int((t - enc.first_seen) / 60)
last = int((t - enc.last_seen) / 60)
text = '{}: {} {}m {}m\n'.format(i, addrs_to_hex([addr]), first, last)
self.uart_server.write(text.encode())
elif '143.log' in text:
cc.lager.log_dump(self)
# OUTGOING (TX) periodically send text
text = cc.current_debug_out
#text = '\n{},{}\n'.format(val1, val2)
#print("TX:", text.strip())
self.uart_server.write((text+'\n').encode())
elif self.was_connected:
self.was_connected = False
self.radio.start_advertising(self.advertisement)
## (end of Bluetooth section)
##################################################################
##################################################################
## Neopixel section: If you're not using Neopixels,
## you can just delete this whole section
print('////1200///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import neopixel
print('////1201///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class NeopixelModule:
def __init__(self):
self.num_pixels = 1 if is_feather else 10
self.pixels = neopixel.NeoPixel(board.NEOPIXEL, self.num_pixels,
brightness=0.2, auto_write=False)
self.pixels_need_update = True
self.current_displayed_count = -1
self.current_displayed_home_count = -1
def periodic_update(self, cc, buttons):
if cc.is_low_power:
return
# One light for each encounter still active as of a minute ago
t = time.monotonic()
count_to_display = 0
home_count_to_display = 0
for enc in cc.current_encounters.values():
if t - enc.last_seen < 60:
count_to_display += 1
if enc.is_home_device:
home_count_to_display += 1
if count_to_display != self.current_displayed_count or home_count_to_display != self.current_displayed_home_count:
self.pixels_need_update = True
if self.pixels_need_update:
self.current_displayed_count = count_to_display
self.current_displayed_home_count = home_count_to_display
for i in range(self.num_pixels):
if i < self.current_displayed_home_count:
self.pixels[i] = (0,16,32)
elif i < self.current_displayed_count:
self.pixels[i] = self.colorwheel255(100 - i * 10)
else:
self.pixels[i] = (0,0,0)
self.pixels.show()
self.pixels_need_update = False
def set_low_power(self, low_power):
if low_power:
self.set_all((0,0,0))
else:
self.pixels_need_update = True
def set_all(self, color):
for i in range(self.num_pixels):
self.pixels[i] = color
self.pixels.show()
def colorwheel255(self, pos):
# Input a value 0 to 255 to get a color value.
# The colors are a transition r - g - b - back to r.
if pos < 0 or pos > 255:
return (0, 0, 0)
if pos < 85:
return (255 - pos * 3, pos * 3, 0)
if pos < 170:
pos -= 85
return (0, 255 - pos * 3, pos * 3)
pos -= 170
return (pos * 3, 0, 255 - pos * 3)
## (end of Neopixel section)
##################################################################
##################################################################
## EInk section: If you're not using EInk,
## you can just delete this whole section
print('////1300///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
if is_feather:
from adafruit_epd.ssd1675 import Adafruit_SSD1675
eink_type = Adafruit_SSD1675
else:
from adafruit_epd.il0373 import Adafruit_IL0373
eink_type = Adafruit_IL0373
print('////1301///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
from adafruit_epd.epd import Adafruit_EPD
print('////1302///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
from adafruit_epd import mcp_sram
print('////1303///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import digitalio
print('////1304///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import busio
print('////1305///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
import terminalio # needed for tiny font
print('////1306///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
# converted at https://javl.github.io/image2cpp/
# 'font_motor_24w_p3', 24x206px
font_motor = {'width':24,
'height':206,
'offsets':{'0':[0+1,21],'1':[1*21+1,20],'2':[2*21+0,20],'3':[3*21+0,20],'4':[4*21-1,20], \
'5':[5*21-1,20],'6':[6*21-2,20],'7':[7*21-3,20],'8':[8*21-3,20],'9':[9*21-3,20]},
'black_pixels':bytearray([ \
0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0x80, 0x07, 0xfe, 0x00, 0x03, 0xfc, 0x00, 0x03, 0xf8, \
0x06, 0x03, 0xf8, 0x0e, 0x03, 0xf0, 0x0e, 0x03, 0xf0, 0x0c, 0x03, 0xf0, 0x1c, 0x03, 0xe0, 0x1c, \
0x07, 0xe0, 0x18, 0x07, 0xe0, 0x38, 0x07, 0xc0, 0x38, 0x0f, 0xc0, 0x30, 0x0f, 0xc0, 0x30, 0x1f, \
0xc0, 0x20, 0x1f, 0xe0, 0x00, 0x3f, 0xe0, 0x00, 0xff, 0xf8, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xf8, 0x0f, 0xff, 0xe0, 0x1f, 0xff, 0x80, 0x1f, 0xfe, 0x00, 0x1f, 0xfc, 0x00, \
0x1f, 0xf8, 0x20, 0x3f, 0xf8, 0xc0, 0x3f, 0xff, 0xc0, 0x3f, 0xff, 0xc0, 0x7f, 0xff, 0x80, 0x7f, \
0xff, 0x80, 0x7f, 0xff, 0x80, 0xff, 0xff, 0x00, 0xff, 0xff, 0x00, 0xff, 0xff, 0x01, 0xff, 0xc0, \
0x00, 0x1f, 0x80, 0x00, 0x1f, 0x80, 0x00, 0x1f, 0xc0, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0x00, \
0x1f, 0xfe, 0x00, 0x07, 0xfe, 0x00, 0x03, 0xfe, 0x00, 0x03, 0xff, 0xfc, 0x03, 0xff, 0xfc, 0x03, \
0xff, 0xfc, 0x03, 0xff, 0xf8, 0x07, 0xff, 0xf0, 0x0f, 0xff, 0x80, 0x1f, 0xfc, 0x00, 0x7f, 0xf0, \
0x03, 0xff, 0xe0, 0x1f, 0xff, 0xe0, 0x3f, 0xff, 0xc0, 0x3f, 0xff, 0xc0, 0x3f, 0xff, 0xc0, 0x00, \
0x1f, 0x80, 0x00, 0x3f, 0x80, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x07, \
0xfc, 0x00, 0x03, 0xfc, 0x00, 0x03, 0xff, 0xfc, 0x03, 0xff, 0xfc, 0x03, 0xff, 0xfc, 0x03, 0xff, \
0xf8, 0x07, 0xfe, 0x00, 0x0f, 0xfc, 0x00, 0x1f, 0xfc, 0x00, 0x1f, 0xfc, 0x00, 0x0f, 0xff, 0xf0, \
0x0f, 0xff, 0xf0, 0x0f, 0xff, 0xe0, 0x1f, 0xff, 0xc0, 0x1f, 0x80, 0x00, 0x3f, 0x80, 0x00, 0x7f, \
0x80, 0x00, 0xff, 0x80, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xff, 0xff, 0xe0, 0xff, 0xff, \
0xc1, 0xff, 0xff, 0x83, 0xff, 0xff, 0x87, 0xff, 0xff, 0x0f, 0xff, 0xfe, 0x10, 0x0f, 0xfc, 0x30, \
0x1f, 0xf8, 0x60, 0x1f, 0xf0, 0xe0, 0x1f, 0xe0, 0xe0, 0x3f, 0xe0, 0x00, 0x07, 0xc0, 0x00, 0x0f, \
0xc0, 0x00, 0x0f, 0xc0, 0x00, 0x0f, 0xff, 0x80, 0x7f, 0xff, 0x80, 0x7f, 0xff, 0x80, 0xff, 0xff, \
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x01, 0xfc, 0x00, 0x01, 0xfc, 0x00, \
0x01, 0xfc, 0x07, 0xff, 0xf8, 0x07, 0xff, 0xf8, 0x07, 0xff, 0xf8, 0x00, 0x7f, 0xf0, 0x00, 0x1f, \
0xf0, 0x00, 0x0f, 0xf0, 0x00, 0x0f, 0xff, 0xf8, 0x0f, 0xff, 0xf8, 0x0f, 0xff, 0xf0, 0x0f, 0xff, \
0xf0, 0x0f, 0xff, 0xe0, 0x1f, 0xc0, 0x00, 0x3f, 0x80, 0x00, 0x7f, 0x80, 0x01, 0xff, 0xc0, 0x3f, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x01, 0xff, 0x80, 0x01, 0xfe, 0x00, 0x01, 0xfc, 0x00, 0x01, \
0xf8, 0x03, 0xff, 0xf8, 0x07, 0xff, 0xf0, 0x0f, 0xff, 0xf0, 0x00, 0x1f, 0xf0, 0x00, 0x0f, 0xe0, \
0x00, 0x07, 0xe0, 0x00, 0x07, 0xe0, 0x38, 0x07, 0xc0, 0x38, 0x07, 0xc0, 0x30, 0x0f, 0xc0, 0x70, \
0x0f, 0xc0, 0x20, 0x1f, 0xe0, 0x00, 0x3f, 0xe0, 0x00, 0x7f, 0xf8, 0x01, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0xfc, 0x00, 0x00, 0xfc, 0x00, 0x01, 0xff, 0xfe, 0x03, 0xff, \
0xf8, 0x07, 0xff, 0xf0, 0x0f, 0xff, 0xe0, 0x1f, 0xff, 0xc0, 0x3f, 0xff, 0xc0, 0x7f, 0xff, 0x80, \
0x7f, 0xff, 0x00, 0xff, 0xff, 0x01, 0xff, 0xfe, 0x01, 0xff, 0xfe, 0x03, 0xff, 0xfc, 0x03, 0xff, \
0xfc, 0x07, 0xff, 0xf8, 0x07, 0xff, 0xf8, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xe0, 0x1f, 0xff, 0x00, 0x07, 0xfe, 0x00, 0x03, 0xfc, 0x00, 0x03, 0xf8, 0x06, 0x03, 0xf8, 0x0e, \
0x03, 0xf8, 0x0c, 0x03, 0xf8, 0x08, 0x07, 0xf8, 0x00, 0x0f, 0xf8, 0x00, 0x1f, 0xe0, 0x00, 0x0f, \
0xe0, 0x18, 0x0f, 0xc0, 0x38, 0x0f, 0xc0, 0x30, 0x0f, 0x80, 0x70, 0x0f, 0x80, 0x20, 0x1f, 0xc0, \
0x00, 0x3f, 0xc0, 0x00, 0x7f, 0xf0, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, \
0x0f, 0xff, 0x00, 0x07, 0xfc, 0x00, 0x03, 0xf8, 0x02, 0x03, 0xf8, 0x06, 0x03, 0xf0, 0x0e, 0x03, \
0xf0, 0x0c, 0x03, 0xf0, 0x0c, 0x03, 0xf0, 0x0c, 0x07, 0xf0, 0x00, 0x07, 0xf0, 0x00, 0x07, 0xfc, \
0x00, 0x07, 0xff, 0xf0, 0x0f, 0xff, 0xf0, 0x0f, 0xff, 0xe0, 0x1f, 0xc0, 0x00, 0x3f, 0xc0, 0x00, \
0x7f, 0x80, 0x01, 0xff, 0x80, 0x0f, 0xff, 0xff, 0xff, 0xff]),
}
print('////1400///// MEMCHECK: {}k'.format(int(gc.mem_free() // 1024)))
class EInkModule:
def __init__(self, cc):
if is_feather:
self.width = 250
self.height = 122
else:
self.width = 152
self.height = 152
self.dirty_rects = [(0, 0, self.width, self.height)]
self.dials_displayed = [0,0,0]
self.dials_src = ('5min', '30min', '2hour')
self.dials_pos = ((0,85),(52,104),(104,85))
self.next_dirty_update_time = time.monotonic()
self.min_update_time = 15.0
self.displayed_unique_contacts = -1
self.displaying_low_batt_warning = False
self.spi = busio.SPI(board.SCL, MOSI=board.SDA)
self.cs_pin = digitalio.DigitalInOut(board.RX)
self.dc_pin = digitalio.DigitalInOut(board.TX)
self.sramcs_pin = None # None to use internal memory
self.rst_pin = digitalio.DigitalInOut(board.A3)
self.busy_pin = None
if is_feather:
self.display = Adafruit_SSD1675(self.width, self.height, self.spi,
cs_pin=self.cs_pin, dc_pin=self.dc_pin,
sramcs_pin=self.sramcs_pin,
rst_pin=self.rst_pin, busy_pin=self.busy_pin)
else:
self.display = EInkOverride(self.width, self.height, self.spi,
cs_pin=self.cs_pin, dc_pin=self.dc_pin,
sramcs_pin=self.sramcs_pin,
rst_pin=self.rst_pin, busy_pin=self.busy_pin)
self.framebuf = [self.display._buffer1, self.display._buffer2]
self.draw_everything(cc)
def periodic_update(self, cc, buttons):
if not is_feather:
self.check_low_battery_warning(cc)
self.draw_dials(cc, force=False)
num_unique = cc.get_total_unique()
if num_unique != self.displayed_unique_contacts:
if num_unique < self.displayed_unique_contacts:
self.draw_everything(cc)
else:
self.draw_big_number(num_unique, do_clear=True)
self.draw_big_number(num_unique, do_clear=False)
self.update_dirty_rects()
def check_low_battery_warning(self, cc):
low_batt = self.display.check_low_battery_warning()
if low_batt:
btprint('LOW BATTERY WARNING:')
if self.displaying_low_batt_warning != low_batt:
self.displaying_low_batt_warning = low_batt
message = 'LOW BATTERY' if low_batt else ' '
self.draw_tiny_text((24, 24, message))
if low_batt:
time.sleep(15)
def set_low_power(self, low_power):
if low_power:
self.min_update_time = 60 * 5
self.display.busy_wait()
time.sleep(0.2)
self.display.power_down()
else:
self.min_update_time = 15.0
# Show the icon
message = 'BATT SAVER MODE' if low_power else ' '
self.draw_tiny_text((24, 36, message))
time.sleep(5)
def draw_tiny_text(self, ttxt):
x,y,message = ttxt
w = len(message) * 6
h = 8
d = self.display
d.fill_rect(x, y, w, h, Adafruit_EPD.WHITE)
d.text(message, x, y, Adafruit_EPD.BLACK)
if not is_feather:
d.set_window((x,y,w,h))
d.display()
def draw_backdrop(self):
with open('images/backdrop2.tsu', 'rb') as f:
num_bytes = (self.width >> 3) * self.height
f.readinto(self.framebuf[0], num_bytes)
f.readinto(self.framebuf[1], num_bytes)
def draw_dial(self, x, y, num_tics):
if num_tics > 0:
if num_tics > 12:
num_tics = 12
filename = 'images/tics_a{}.tsu'.format(num_tics)
w = h = 48
self.add_dirty_rect((x, y, w, h))
img = [0,0]
shift = x & 7
with open(filename, 'rb') as f:
num_bytes = (w >> 3) * h
img = [f.read(num_bytes), f.read(num_bytes)]
src_rowbytes = w >> 3
dst_rowbytes = self.width >> 3
for i in range(2):
src = img[i]
dst = self.framebuf[i]
src_row = 0
dst_row = (x >> 3) + dst_rowbytes * y
tail = 0xff
for ry in range(h):
if shift:
for rx in range(src_rowbytes):
sp = ~src[src_row + rx]
head = ~(sp >> shift) | (0xff << (8 - shift))
dst[dst_row + rx] &= head & tail
tail = ~(sp << (8 - shift)) & 0xff
if tail != 0xff:
dst[dst_row + rx] &= tail
else:
for rx in range(src_rowbytes):
dst[dst_row + rx] &= src[src_row + rx]
src_row += src_rowbytes
dst_row += dst_rowbytes
def draw_dials(self, cc, force):
for i in range(len(self.dials_src)):
val = cc.persistent_data[self.dials_src[i]]
if force or val != self.dials_displayed[i]:
self.draw_dial(self.dials_pos[i][0], self.dials_pos[i][1], val)
self.dials_displayed[i] = val