80 lines
2.3 KiB

"""Shared functionality for home screen apps
Apps in the "homescreen" should behave in a similar manner to not confuse users.
In particular, they *should*:
* Call "homescreen.init()" at the beginning. This will initiate ugfx, clear the screen and
initiate button handline.
* Use "sleep.wfi()" as much as possible to avoid draining the battery.
* Not use
They also *may*:
* Display a name, returned by "homescreen.name()"
* Display network strength "homescreen.wifi_strength()" (0-1, might return "None" if not connected)
* Display remaining battery "homescreen.battery()" (0-1)
___license___ = "MIT"
___dependencies___ = ["database", "buttons", "app", "sleep", "ugfx_helper", "wifi", "sim800"]
import database, ugfx, random, buttons, tilda, sleep, ugfx_helper, wifi, time, sim800
from app import App
_state = None
def init(enable_menu_button = True):
global _state
_state = {"menu": False}
if enable_menu_button:
#buttons.enable_interrupt("BTN_MENU", lambda t: set_state("menu"), on_release = True)
def set_state(key, value = True):
# we can't allocate memory in interrupts, so make sure all keys are set beforehand and
# you're only using numbers and booleans
global _state
_state[key] = value
def clean_up():
def time_as_string(seconds=False):
t = time.localtime()
if seconds:
return "%d:%02d:%02d" % (t[3], t[4], t[5])
return "%d:%02d" % (t[3], t[4]) #todo: add a setting for AM/PM mode
def sleep_or_exit(interval = 0.5):
# todo: do this better - check button multiple times and sleep for only a short while
if buttons.is_triggered(tilda.Buttons.BTN_Menu):
launcher = "launcher"
with open("default_launcher.txt", "r") as dl:
except OSError:
def name(default = None):
return database.get("homescreen.name", default)
def callsign(default = None):
return database.get("homescreen.callsign", default)
# Strength in %, None if unavailable
def wifi_strength():
return wifi.get_strength()
# Charge in %, None if unavailable
def battery():
return sim800.batterycharge() # todo: fix me, we can get this from the sim800