1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134 | from machine import Pin, I2C
from ssd1306 import SSD1306_I2C
from utime import localtime, sleep
# OLED DATA Pin on GPIO 0
OLED_SSD1306_SDA_PIN = 0
# OLED Clock Pin on GPIO 1
OLED_SSD1306_SCL_PIN = 1
sda=Pin(OLED_SSD1306_SDA_PIN, Pin.OUT)
scl=Pin(OLED_SSD1306_SCL_PIN, Pin.OUT)
# freq=198000 to 3600000 seem to work. Use 3000000 as a safe option.
i2c = I2C(0, scl=scl, sda=sda, freq=3000000)
# Initialize display (128x64 pixels)
oled = SSD1306_I2C(128, 64, i2c)
segmentMapping = [
#a, b, c, d, e, f, g
[1, 1, 1, 1, 1, 1, 0], # 0
[0, 1, 1, 0, 0, 0, 0], # 1
[1, 1, 0, 1, 1, 0, 1], # 2
[1, 1, 1, 1, 0, 0, 1], # 3
[0, 1, 1, 0, 0, 1, 1], # 4
[1, 0, 1, 1, 0, 1, 1], # 5
[1, 0, 1, 1, 1, 1, 1], # 6
[1, 1, 1, 0, 0, 0, 0], # 7
[1, 1, 1, 1, 1, 1, 1], # 8
[1, 1, 1, 1, 0, 1, 1] # 9
];
# x and y are upper-left-corner
# width and height are the dimensions of the digit
# thinkness is the width of the line segments
# color is 1 for white and 0 for black
def drawDigit(digit, x, y, width, height, thinkness, color):
if digit < 0:
return
# get a list of the segments that are on for this digit
segmentOn = segmentMapping[digit];
# Draw the horizontal segments: top, bottem, middle
for i in [0, 3, 6]:
if (segmentOn[i]):
if (i==0): # top
yOffset = 0
if (i==3):
yOffset = height - thinkness # bottem element
if (i==6):
yOffset = height // 2 - thinkness // 2# bottum
# oled.line(x - size, y+yOffset-size, x + size, y+yOffset-size, 1);
oled.fill_rect(x, y+yOffset, width, thinkness, color)
# Draw the vertical segments ur, lr, ll, ul
for i in [1, 2, 4, 5]:
if (segmentOn[i]) :
# upper vertical lines
if (i==1 or i==5):
startY = y
endY = y + height // 2
# lower two vertical lines (2=lower right and 4=lower left)
if (i==2 or i==4):
startY = y + height // 2
endY = y + height
if (i==4 or i==5): xOffset = 0
if (i==1 or i==2): xOffset = width-thinkness
oled.fill_rect(x+xOffset, startY, thinkness, endY-startY, color)
def update_screen(year, month, day, hour, minute, am_pm, colon_on):
## Adjust these to fit the display
left_margin = -15
y_offset = 16
digit_width = 30
digit_height = 37
digit_spacing = 36
digit_thickness = 5
oled.fill(0)
date_str = f"{month}/{day}/{year}"
oled.text(date_str, 0, 0, 1)
if hour > 12:
hour = hour - 12
if hour > 10:
hour_ten = 1
else:
hour_ten = -1
hour_right = hour % 10
minute_ten = minute // 10
minute_right = minute % 10
# left digit will be 1 or blank
drawDigit(hour_ten, left_margin, y_offset, digit_width, digit_height, digit_thickness, 1)
drawDigit(hour_right, left_margin + 1*digit_spacing, y_offset, digit_width, digit_height, digit_thickness, 1)
drawDigit(minute_ten, left_margin + 2*digit_spacing, y_offset, digit_width, digit_height, digit_thickness, 1)
drawDigit(minute_right, left_margin + 3*digit_spacing, y_offset, digit_width, digit_height, digit_thickness, 1)
if colon_on:
draw_colon(53,26)
pm_xoffset = 106
pm_yoffset = 55
oled.text(am_pm, pm_xoffset, pm_yoffset, 1)
oled.show()
def draw_colon(x,y):
oled.fill_rect(x, y, 2, 2,1)
oled.fill_rect(x, y+8, 2, 2,1)
counter = 0
while True:
now = localtime()
year = now[0]
month = now[1]
day = now[2]
hour = now[3]
if hour > 12:
am_pm = "PM"
else:
am_pm = "AM"
minute = now[4]
update_screen(year, month, day, hour, minute, am_pm, True)
sleep(1)
update_screen(year, month, day, hour, minute, am_pm, False)
sleep(1)
counter += 1
if counter > 9:
counter = 0
|