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December 12, 2021 06:36
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circuitpython clock for Lilygo TTGO T8 ESP32-S2
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import struct | |
import time | |
import board | |
import displayio | |
import rtc | |
import socketpool | |
import terminalio | |
import wifi | |
from adafruit_display_text import label | |
try: | |
from secrets import secrets | |
except ImportError: | |
print("WiFi secrets are kept in secrets.py, please add them there!") | |
raise | |
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) | |
BORDER = 10 | |
FONTSCALE = 3 | |
BACKGROUND_COLOR = 0x0e1115 | |
FOREGROUND_COLOR = 0x0f1929 | |
TEXT_COLOR = 0xd257ff | |
def init_ui(display): | |
splash = displayio.Group(max_size=10) | |
display.show(splash) | |
color_bitmap = displayio.Bitmap(display.width, display.height, 1) | |
color_palette = displayio.Palette(1) | |
color_palette[0] = BACKGROUND_COLOR | |
bg_sprite = displayio.TileGrid(color_bitmap, pixel_shader=color_palette, x=0, y=0) | |
splash.append(bg_sprite) | |
# Draw a smaller inner rectangle | |
inner_bitmap = displayio.Bitmap(display.width - BORDER * 2, display.height - BORDER * 2, 1) | |
inner_palette = displayio.Palette(1) | |
inner_palette[0] = FOREGROUND_COLOR | |
inner_sprite = displayio.TileGrid(inner_bitmap, pixel_shader=inner_palette, x=BORDER, y=BORDER) | |
splash.append(inner_sprite) | |
text_label = label.Label(terminalio.FONT, color=TEXT_COLOR, text="Starting", anchor_point=(0.5, 0.5)) | |
text_width = text_label.bounding_box[2] * FONTSCALE | |
text_group = displayio.Group( | |
max_size=10, | |
scale=FONTSCALE, | |
x=display.width // 2 - text_width // 2, | |
y=display.height // 2, | |
) | |
text_group.append(text_label) | |
splash.append(text_group) | |
return text_label | |
def update_time(text_label): | |
now = time.localtime() | |
text_label.text = "%02.d:%02.d:%02.d" % (now.tm_hour, now.tm_min, now.tm_sec) | |
display = board.DISPLAY | |
text_label = init_ui(display) | |
update_time(text_label) | |
print("Connecting to ", secrets["ssid"]) | |
wifi.radio.connect(ssid=secrets["ssid"], password=secrets["password"]) | |
print("Connected with IP ", wifi.radio.ipv4_address) | |
text_label.text = "Connected" | |
pool = socketpool.SocketPool(wifi.radio) | |
now = get_ntp_time(pool) | |
rtc.RTC().datetime = now | |
print("Synced with NTP") | |
text_label.text = "Synced" | |
time.sleep(1.0) | |
while True: | |
update_time(text_label) | |
time.sleep(1.0) |
Today I flashed the EN-US bin file version 6.3 and your above version is working now, also after power-off/ power-on!
(Before I used the DE-DE version 6.2)
Many thanks, Peter
I'm glad it works now. That makes me happy.
Cheers
This works great! One small improvement, if you change the formatting string, the seconds show up correctly:
text_label.text = "%02.d:%02.d:%02.d" % (now.tm_hour, now.tm_min, now.tm_sec)
Thanks @joelhaasnoot. I updated it 💟
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Also tried your new display = board.DISPLAY call from line 78 above, but this didn´t work neither even when saving code.py from mu editor.