OLED display clock for SSD1306 + Raspberry Pi

oled_clock.py

import time
from datetime import datetime

import Adafruit_GPIO.SPI as SPI
import Adafruit_SSD1306

from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont

import subprocess

# Raspberry Pi pin configuration:
RST = None     # on the PiOLED this pin isnt used
# Note the following are only used with SPI:
DC = 23
SPI_PORT = 0
SPI_DEVICE = 0

disp = Adafruit_SSD1306.SSD1306_128_32(rst=RST)

disp.begin()

# Clear display.
disp.clear()
disp.display()

# Create blank image for drawing.
# Make sure to create image with mode '1' for 1-bit color.
width = disp.width
height = disp.height
image = Image.new('1', (width, height))

# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)

# Draw a black filled box to clear the image.
draw.rectangle((0,0,width,height), outline=0, fill=0)

# Draw some shapes.
# First define some constants to allow easy resizing of shapes.
padding = -2
top = padding
bottom = height-padding
# Move left to right keeping track of the current x position for drawing shapes.
x = 0


# Load default font.
#font = ImageFont.load_default()

font_16 = ImageFont.truetype('Montserrat-Regular.ttf', 16)
font_20 = ImageFont.truetype('Montserrat-Regular.ttf', 20)

while True:
    start_time = time.time()

    # Draw a black filled box to clear the image.
    draw.rectangle((0,0,width,height), outline=0, fill=0)

    now = datetime.now()
    _time = now.strftime("%I:%M:%S")
    _am_pm = now.strftime("%p")
    _date = now.strftime("%Y/%m/%d")

    # Write two lines of text.

    _size_am_pm = font_20.getlength(_am_pm)
    _size_date = font_16.getlength(_date)
    _pad_date = (width - _size_date) / 2

    draw.text((x, top), _time,  font=font_20, fill=255)
    draw.text((width-_size_am_pm, top-1), _am_pm,  font=font_20, fill=255)
    draw.text((x+_pad_date, height-16), _date, font=font_16, fill=255)

    # Display image.
    disp.image(image.rotate(180))
    disp.display()
    time.sleep(1 - (time.time() - start_time))

oled_clock_jp_ver.py

import time
from datetime import datetime

import Adafruit_GPIO.SPI as SPI
import Adafruit_SSD1306

from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont

LNG_JP = 0
LNG_ENG = 1
LNG_CHI = 2

def week_str(day, lng):
    """0 is Sunday, 1 is Monday... 6 is Sat"""
    day = int(day)
    return [
        ['日', 'Sun', '日'],
        ['月', 'Mon', '一'],
        ['火', 'Tue', '二'],
        ['水', 'Wed', '三'],
        ['木', 'Thu', '四'],
        ['金', 'Fri', '五'],
        ['土', 'Sat', '六'],
    ][day][lng]

def ampm_to_chi(am_pm:str):
    am_pm = am_pm.lower()
    if am_pm == 'am':
        return '上午'
    elif am_pm == 'pm':
        return '下午'
    else:
        raise Exception("Invalid string. Excepted AM or PM")

# Raspberry Pi pin configuration:
RST = None     # on the PiOLED this pin isnt used
# Note the following are only used with SPI:
DC = 23
SPI_PORT = 0
SPI_DEVICE = 0

disp = Adafruit_SSD1306.SSD1306_128_32(rst=RST, i2c_bus=1)

disp.begin()

# Clear display.
disp.clear()
disp.display()

# Create blank image for drawing.
# Make sure to create image with mode '1' for 1-bit color.
width = disp.width
height = disp.height
image = Image.new('1', (width, height))

# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)

# Draw a black filled box to clear the image.
draw.rectangle((0,0,width,height), outline=0, fill=0)

# Draw some shapes.
# First define some constants to allow easy resizing of shapes.
padding = -2
top = padding
bottom = height-padding
# Move left to right keeping track of the current x position for drawing shapes.
x = 0


# Load default font.
#font = ImageFont.load_default()

font_path = '/home/pi/Montserrat-Regular.ttf'
font_path_ckj = '/home/pi/setofont.ttf'
font_16 = ImageFont.truetype(font_path, 16)
font_20 = ImageFont.truetype(font_path_ckj, 19)
font_16_ckj = ImageFont.truetype(font_path_ckj, 15)

while True:
    start_time = time.time()

    # Draw a black filled box to clear the image.
    draw.rectangle((0,0,width,height), outline=0, fill=0)

    now = datetime.now()
    _time = now.strftime("%I:%M:%S")
    _am_pm = ampm_to_chi(now.strftime("%p"))
    #_date = now.strftime("%Y/%m/%d")
    _week = week_str(now.strftime("%w"), LNG_JP)
    _time = f"{_am_pm} {_time}"
    _date = f"{now.month}月{now.day}日 {_week}曜日"

    draw.text((int(width/2), top+20), _time, font=font_20, fill=255, anchor="md")
    #draw.text((width-_size_am_pm, top-1), _am_pm,  font=font_20, fill=255)
    draw.text((int(width/2), height-14), _date, font=font_16_ckj, fill=255, anchor="mt")

    # Display image.
    disp.image(image.rotate(180))
    disp.display()
    time.sleep(1 - (time.time() - start_time))