def update_display(display, payload):
def calculate_width(font, text):
w = 0
for c in text:
glyph, char_height, char_width = font.get_ch(c)
w += char_width
return w
try:
command = {}
if payload is None:
# An example command for testing
command = {
"heating_state": True,
"msg": "auto",
"inside_temp": 23.456,
"outside_temp": -9.876
}
else:
try:
import ujson as json
command = json.loads(payload)
except (OSError, ValueError):
import kiota.Util as Util
Util.log(update_display,
"Can't parse payload: '{}'".format(payload))
display.fill(0)
ink = 1
heating_state = command["heating_state"]
if heating_state:
ink = 0
display.fill_rect(0, 0, 128, 14, 1)
if command["msg"] is not None:
display.text(str(command["msg"]), 0, 1, ink)
if command["heating_state"]:
display.text("ON", 104, 1, ink)
else:
display.text("OFF", 104, 1, ink)
import KameronRegularNumbers25 as font
from Writer import Writer
writer = Writer(display, font)
writer.set_clip(True, True)
inside_temp = "--"
try:
inside_temp = str(int(round(float(command["inside_temp"]))))
except:
pass
writer.set_textpos(23,
int((64 - calculate_width(font, inside_temp)) / 2))
display.fill_rect(0, 15, 64, 41, 0)
writer.printstring(inside_temp)
outside_temp = "--"
try:
outside_temp = str(int(round(float(command["outside_temp"]))))
except:
pass
writer.set_textpos(
23, 64 + int((64 - calculate_width(font, outside_temp)) / 2))
display.fill_rect(64, 15, 64, 41, 0)
writer.printstring(outside_temp)
display.text("inside", 0, 56)
display.text("outside", 72, 56)
display.show()
except Exception as e:
display.text("ERROR", 0, 0)
display.show()
import sys
sys.print_exception(e)
return True
