Created
June 13, 2021 13:04
-
-
Save codepope/f861f6f9b931caffc21dac1a8e9c89e4 to your computer and use it in GitHub Desktop.
Lilygo clock from 12 Jun session at Makeroni
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import struct | |
import board | |
import displayio | |
import terminalio | |
import wifi | |
import socketpool | |
import time | |
import rtc | |
from adafruit_bitmap_font import bitmap_font | |
from adafruit_display_text import label | |
# Get wifi details and more from a secrets.py file | |
try: | |
from secrets import secrets | |
except ImportError: | |
print("WiFi secrets are kept in secrets.py, please add them there!") | |
raise | |
print("My MAC addr:", [hex(i) for i in wifi.radio.mac_address]) | |
print("Connecting to %s"%secrets["ssid"]) | |
wifi.radio.connect(secrets["ssid"], secrets["password"]) | |
print("Connected to %s!"%secrets["ssid"]) | |
print("My IP address is", wifi.radio.ipv4_address) | |
# NTP Code from https://gist.github.com/netroy/d1bff654fa58b884d63894ca2c890fc6 | |
TZ_OFFSET = 3600 | |
NTP_SERVER = "pool.ntp.org" | |
NTP_PORT = 123 | |
def get_ntp_time(pool): | |
packet = bytearray(48) | |
packet[0] = 0b00100011 | |
for i in range(1, len(packet)): | |
packet[i] = 0 | |
with pool.socket(pool.AF_INET, pool.SOCK_DGRAM) as sock: | |
sock.sendto(packet, (NTP_SERVER, NTP_PORT)) | |
sock.recvfrom_into(packet) | |
destination = time.monotonic_ns() | |
seconds = struct.unpack_from("!I", packet, offset=len(packet) - 8)[0] | |
monotonic_start = seconds - 2_208_988_800 - (destination // 1_000_000_000) | |
return time.localtime(time.monotonic_ns() // 1_000_000_000 + monotonic_start + TZ_OFFSET) | |
pool = socketpool.SocketPool(wifi.radio) | |
now = get_ntp_time(pool) | |
rtc.RTC().datetime = now | |
print("Synced with NTP") | |
display=board.DISPLAY | |
text="__:__:__" | |
font=bitmap_font.load_font("/font/Helvetica-Bold-36.bdf") | |
color=0xFF00FF | |
text_area=label.Label(font,text=text,color=color) | |
text_area.x=20 | |
text_area.y=20 | |
display.show(text_area) | |
last_time=time.localtime() | |
def update_time(text_label): | |
global last_time | |
now = time.localtime() | |
if now.tm_sec>last_time.tm_sec or now.tm_sec==0: | |
text_label.text = "%02d:%02d:%02d" % (now.tm_hour, now.tm_min, now.tm_sec) | |
last_time=now | |
while True: | |
update_time(text_area) | |
time.sleep(0.1) | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment