scroll phat hd clock

clock.py

#!/usr/bin/env python

import time
import signal
import math

import scrollphathd
from envirophat import light, motion, weather

"""
[Unit]
Description=Scroll Hat HD Clock

[Service]
Environment=TZ=Europe/London
ExecStart=/home/pi/clock.py
Restart=on-abort

[Install]
WantedBy=multi-user.target
"""

print("""
Scroll pHAT HD: Clock

Displays hours and minutes in text,
plus a seconds progress bar.

Press Ctrl+C to exit!

""")


class Font(object):
    def __init__(self, width, height, data):
        self.width = width
        self.height = height
        self.data = data


font3x5 = Font(5, 5, {

0x00000030: [[0xff,0xff,0xff],
             [0xff,0x00,0xff],
             [0xff,0x00,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff]],

0x00000031: [[0x00,0xff,0x00],
             [0xff,0xff,0x00],
             [0x00,0xff,0x00],
             [0x00,0xff,0x00],
             [0xff,0xff,0xff]],

0x00000032: [[0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0xff,0xff,0xff],
             [0xff,0x00,0x00],
             [0xff,0xff,0xff]],

0x00000033: [[0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0x00,0xff,0xff],
             [0x00,0x00,0xff],
             [0xff,0xff,0xff]],

0x00000034: [[0xff,0x00,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0x00,0x00,0xff]],

0x00000035: [[0xff,0xff,0xff],
             [0xff,0x00,0x00],
             [0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0xff,0xff,0xff]],

0x00000036: [[0xff,0xff,0xff],
             [0xff,0x00,0x00],
             [0xff,0xff,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff]],

0x00000037: [[0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0x00,0xff,0x00],
             [0x00,0xff,0x00],
             [0x00,0xff,0x00]],

0x00000038: [[0xff,0xff,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff]],

0x00000039: [[0xff,0xff,0xff],
             [0xff,0x00,0xff],
             [0xff,0xff,0xff],
             [0x00,0x00,0xff],
             [0xff,0xff,0xff]],

0x0000003a: [[0x00],
             [0xff],
             [0x00],
             [0xff]],

} )


class Widget(object):

    def __init__(self, font):
        self.font = font


    def draw(self, brightness=0.25, rotation=0):

        scrollphathd.rotate(90*rotation)
        scrollphathd.clear()

        if rotation%2:
            self.draw_portrait(brightness, rotation)
        else:
            self.draw_landscape(brightness, rotation)

        scrollphathd.show()



class Clock(Widget):

    def draw_landscape(self, brightness, rotation):

        float_sec = (time.time() % 60) / 60.0
        bar_sec = float_sec * 16
        bar_int = math.floor(bar_sec)
        bar_float = (bar_sec - bar_int)**2

        if rotation == 0:
            bar_pos = 6
            clk_pos = 0
        else:
            bar_pos = 0
            clk_pos = 2

        scrollphathd.set_pixel(bar_int,bar_pos,(1.0-bar_float)*brightness)
        scrollphathd.set_pixel(bar_int+1,bar_pos,bar_float*brightness)

        str_time = time.strftime("%H:%M") 
        scrollphathd.write_string(str_time, x=0, y=clk_pos, font=self.font, brightness=brightness)

        if int(time.time()) % 2 == 0:
            scrollphathd.clear_rect(8,clk_pos,1,5)


    def draw_portrait(self, brightness, rotation):

        str_hours = time.strftime("%H")
        scrollphathd.write_string(str_hours, x=0, y=0, font=self.font, brightness=brightness)

        str_minutes = time.strftime("%M")
        scrollphathd.write_string(str_minutes, x=0, y=6, font=self.font, brightness=brightness)

        str_seconds = time.strftime("%S")
        scrollphathd.write_string(str_seconds, x=0, y=12, font=self.font, brightness=brightness)





clock = Clock(font3x5)
rotate = 0

while True:
    x, y, z = motion.accelerometer()

    if y < -0.5:
        rotate = 0
    elif y > 0.5:
        rotate = 2
    elif x < -0.5:
        rotate = 1
    elif x > 0.5:
        rotate = 3

    brightness = 0.2 + ((light.light()/512.0)**2)
    if brightness > 1.0:
        brightness = 1.0

    clock.draw(brightness, rotate)

    time.sleep(0.1)