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February 25, 2024 18:03
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Time and Temperature
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| # SPDX-FileCopyrightText: Copyright (c) 2024 Randall Bohn (dexter) | |
| # | |
| # SPDX-License-Identifier: MIT | |
| # | |
| # EQUIPMENT | |
| ## Adafruit Feather ESP32-S2 TFT | |
| ## CircuitPython 9.0.0 or 8.2.9 | |
| ## FeatherWing Doubler https://www.adafruit.com/product/2890 | |
| import board | |
| import displayio | |
| import time | |
| from adafruit_bitmap_font.bitmap_font import load_font | |
| from adafruit_display_text.label import Label | |
| from adafruit_display_shapes.circle import Circle | |
| import adafruit_adt7410 | |
| import wifi | |
| from socketpool import SocketPool | |
| from adafruit_ntp import NTP | |
| import rtc | |
| display = board.DISPLAY | |
| i2c = board.I2C() | |
| therm = adafruit_adt7410.ADT7410(i2c) | |
| METRIC = False | |
| pool = SocketPool(wifi.radio) | |
| ntp = NTP(pool, tz_offset=-7.0) # US/Denver | |
| rtc.RTC().datetime = ntp.datetime | |
| def get_time(): | |
| now = time.localtime() | |
| a = f"{now.tm_year}-{now.tm_mon:02d}-{now.tm_mday:02d} " | |
| hour = now.tm_hour % 12 | |
| if hour == 0: hour = 12 | |
| b= f"{hour:02d}:{now.tm_min:02d}:{now.tm_sec:02d}" | |
| return a,b | |
| def slowly(func, period=2.0): | |
| "rate limit decorator" | |
| check = time.monotonic() - period | |
| def _slowly(*args, **kwargs): | |
| nonlocal check | |
| now = time.monotonic() | |
| if now > check: | |
| check = now + period | |
| return func(*args, **kwargs) | |
| return None | |
| return _slowly | |
| @slowly | |
| def get_temp_C(): | |
| "Temperature Celsius" | |
| T = therm.temperature | |
| return f"{T:0.1f} C" | |
| @slowly | |
| def get_temp_F(): | |
| "Temperature Fahrenheit" | |
| T = therm.temperature * 1.8 + 32 | |
| return f"{T:0.1f} F" | |
| radius = 24 | |
| splash = displayio.Group() | |
| cc = Circle(display.width*7//8, display.height//2, radius, outline=0xFFFFFF) | |
| splash.append(cc) | |
| font = load_font("/fonts/Arial-18.pcf") | |
| clock = Label(font, text="----", | |
| color=0xFFFF66, | |
| x=display.width//8, | |
| y=display.height*7//8) | |
| splash.append(clock) | |
| temperature = Label(font, text="10.0 K", | |
| color=0x3333FF, | |
| x=display.width//8, | |
| y=display.height*3//8) | |
| splash.append(temperature) | |
| display.root_group=splash | |
| def loop(): | |
| clock.text = get_time()[1] | |
| if METRIC: | |
| temperature.text = get_temp_C() or temperature.text | |
| else: | |
| temperature.text = get_temp_F() or temperature.text | |
| time.sleep(0.1) | |
| if __name__=="__main__": | |
| while True: | |
| loop() |
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