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dothatgadget.py
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dothatgadget.py
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import math
import time
from gadget import GadgetBase, IndicatorStatus, BackgroundStatus
from dothat import lcd
from dothat import backlight
class DotHatGadget(GadgetBase):
NUM_COLS = 16
NUM_ROWS = 3
MIN_LED_BRIGHTNESS = 0
MAX_LED_BRIGHTNESS = 255
NUM_LEDS = 6
ANIM_INTERVAL_SECONDS = 0.01
def __init__(self):
super(DotHatGadget, self).__init__()
def display_boot_animation(self, anim_time=10.0):
self.clear_indicators()
elapsed_time = 0.0
x = 0
while True:
if elapsed_time >= anim_time:
break
x += 1
backlight.sweep((x % 360) / 360.0)
time.sleep(DotHatGadget.ANIM_INTERVAL_SECONDS)
elapsed_time += DotHatGadget.ANIM_INTERVAL_SECONDS
self.set_background_status(BackgroundStatus.Info)
def set_status_lines(self, lines):
lcd.clear()
for i in range(min(len(lines), DotHatGadget.NUM_ROWS)):
lcd.set_cursor_position(0, i)
lcd.write(lines[i][:DotHatGadget.NUM_COLS])
def set_indicator(self, i, status):
if status == IndicatorStatus.On:
backlight.graph_set_led_state(i, 1)
else:
backlight.graph_set_led_state(i, 0)
def clear_indicators(self):
backlight.graph_off()
def set_background_status(self, status):
if status == BackgroundStatus.Ok:
backlight.rgb(0, 255, 0)
elif status == BackgroundStatus.Error:
backlight.rgb(255, 0, 0)
elif status == BackgroundStatus.Warn:
backlight.rgb(255, 255, 0)
else:
backlight.rgb(0, 0, 255)