163 lines
4.7 KiB
Python
163 lines
4.7 KiB
Python
# SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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# Vertical Word Clock using the Adafruit Feather M4 and
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# the Adafruit DS3231 real-time clock FeatherWing
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import time
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import board
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import busio as io
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import digitalio
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import adafruit_ds3231
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import neopixel
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i2c = io.I2C(board.SCL, board.SDA)
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# Create the RTC instance:
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rtc = adafruit_ds3231.DS3231(i2c)
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# Set up Feather M4 onboard LED for output
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LED13 = digitalio.DigitalInOut(board.D13)
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LED13.direction = digitalio.Direction.OUTPUT
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# Set digital 6 as an input for slide switch
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Slide_Switch = digitalio.DigitalInOut(board.D6)
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Slide_Switch.switch_to_input(pull=digitalio.Pull.UP)
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pixel_pin = board.D5
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num_pixels = 21
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pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=1.0,
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auto_write=False)
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pixels.fill((0, 0, 0)) # Blanking Display
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COLOR = (0, 200, 0) # Green for time later in code
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# Bitmap values for each value. These can be OR'ed together
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THREE = 1
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EIGHT = 1 << 1
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ELEVEN = 1 << 2
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TWO = 1 << 3
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SIX = 1 << 4
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FOUR = 1 << 5
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SEVEN = 1 << 6
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NOON = 1 << 7
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TEN = 1 << 8
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ONE = 1 << 9
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FIVE = 1 << 10
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MIDNIGHT = 1 << 11
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NINE = 1 << 12
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PAST = 1 << 13
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TO = 1 << 14
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FIVEMIN = 1 << 15
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QUARTER = 1 << 16
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TENMIN = 1 << 17
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HALF = 1 << 18
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TWENTY = 1 << 19
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# Pass in hour and minute, return LED bitmask
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# pylint: disable=too-many-branches
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# pylint: disable=too-many-statements
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def writetime(the_hr, the_min):
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value = 0 # Start with zero, which is no words
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if (the_hr == 24) and (the_min == 0): # Special cases: Midnight and Noon
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return MIDNIGHT
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if (the_hr == 12) and (the_min == 0):
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return NOON
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# set minute
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if (the_min > 3) and (the_min < 8):
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value = value | FIVEMIN
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if (the_min > 7) and (the_min < 13):
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value = value | TENMIN
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if (the_min > 12) and (the_min < 18):
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value = value | QUARTER
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if (the_min > 17) and (the_min < 23):
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value = value | TWENTY
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if (the_min > 22) and (the_min < 28):
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value = value | TWENTY | FIVEMIN
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if (the_min > 27) and (the_min < 33):
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value = value | HALF
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if (the_min > 32) and (the_min < 38):
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value = value | TWENTY | FIVEMIN
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if (the_min > 37) and (the_min < 43):
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value = value | TWENTY
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if (the_min > 42) and (the_min < 48):
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value = value | QUARTER
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if (the_min > 47) and (the_min <= 53):
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value = value | TENMIN
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if the_min >= 54:
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value = value | FIVEMIN
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# before or after
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if (the_min > 3) and (the_min <= 32):
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value = value | PAST
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if the_min >= 33:
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the_hr = the_hr + 1 # for the TO case
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value = value | TO
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# set hour
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if the_hr > 12:
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the_hr = the_hr - 12 # Convert 24 hour format to 12 hour
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if the_hr == 1:
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value = value | ONE
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if the_hr == 2:
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value = value | TWO
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if the_hr == 3:
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value = value | THREE
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if the_hr == 4:
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value = value | FOUR
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if the_hr == 5:
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value = value | FIVE
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if the_hr == 6:
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value = value | SIX
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if the_hr == 7:
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value = value | SEVEN
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if the_hr == 8:
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value = value | EIGHT
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if the_hr == 9:
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value = value | NINE
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if the_hr == 10:
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value = value | TEN
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if the_hr == 11:
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value = value | ELEVEN
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if the_hr == 0:
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value = value | MIDNIGHT
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if the_hr == 12:
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value = value | NOON
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return value
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# end def
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# pylint: enable=too-many-branches
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# pylint: enable=too-many-statements
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# Main loop
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LEDstate = 0
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Write_Now = True
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while True:
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t = rtc.datetime
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# print("The date is {} {}/{}/{}".format(days[int(t.tm_wday)],
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# t.tm_mday, t.tm_mon, t.tm_year))
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# print("The time is {}:{:02}:{:02}".format(t.tm_hour, t.tm_min, t.tm_sec))
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hour = t.tm_hour
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if not Slide_Switch.value: # Slide switch activate = Daylight savings
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# print("Switch detected for daylight savings")
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if hour == 24:
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hour = 1
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else:
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hour += 1
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Write_Now = True # Trigger a write
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minute = t.tm_min
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second = t.tm_sec
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if second == 59 or Write_Now:
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# print("The time is {}:{:02}".format(t.tm_hour, t.tm_min))
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pixels.fill((0, 0, 0)) # blank all pixels for change
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the_time = writetime(hour, minute)
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for i in range(0, 21): # Check all bits
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if the_time & 1 << i: # If the bit is true
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pixels[i+1] = COLOR # set pixel on (shift up 2 for buried one)
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pixels.show()
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if LEDstate == 0: # Flash the D13 LED every other second for activity
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LED13.value = True
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LEDstate = 1
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else:
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LED13.value = False
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LEDstate = 0
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Write_Now = False
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time.sleep(1) # wait a second
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