-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathepd7in5b_V2.py
192 lines (158 loc) · 6.43 KB
/
epd7in5b_V2.py
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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
# *****************************************************************************
# * | File : epd7in5b_V2.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V4.2
# * | Date : 2022-01-08
# # | Info : python demo
# -----------------------------------------------------------------------------
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
import logging
from . import epdconfig
# Display resolution
EPD_WIDTH = 800
EPD_HEIGHT = 480
logger = logging.getLogger(__name__)
class EPD:
def __init__(self):
self.reset_pin = epdconfig.RST_PIN
self.dc_pin = epdconfig.DC_PIN
self.busy_pin = epdconfig.BUSY_PIN
self.cs_pin = epdconfig.CS_PIN
self.width = EPD_WIDTH
self.height = EPD_HEIGHT
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(200)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(4)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(200)
def send_command(self, command):
epdconfig.digital_write(self.dc_pin, 0)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte([command])
epdconfig.digital_write(self.cs_pin, 1)
def send_data(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte([data])
epdconfig.digital_write(self.cs_pin, 1)
def send_data2(self, data): #faster
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
logger.debug("e-Paper busy")
self.send_command(0x71)
busy = epdconfig.digital_read(self.busy_pin)
while(busy == 0):
self.send_command(0x71)
busy = epdconfig.digital_read(self.busy_pin)
epdconfig.delay_ms(200)
logger.debug("e-Paper busy release")
def init(self):
if (epdconfig.module_init() != 0):
return -1
self.reset()
# self.send_command(0x06) # btst
# self.send_data(0x17)
# self.send_data(0x17)
# self.send_data(0x38) # If an exception is displayed, try using 0x38
# self.send_data(0x17)
self.send_command(0x01) # POWER SETTING
self.send_data(0x07)
self.send_data(0x07) # VGH=20V,VGL=-20V
self.send_data(0x3f) # VDH=15V
self.send_data(0x3f) # VDL=-15V
self.send_command(0x04) # POWER ON
epdconfig.delay_ms(100)
self.ReadBusy()
self.send_command(0X00) # PANNEL SETTING
self.send_data(0x0F) # KW-3f KWR-2F BWROTP-0f BWOTP-1f
self.send_command(0x61) # tres
self.send_data(0x03) # source 800
self.send_data(0x20)
self.send_data(0x01) # gate 480
self.send_data(0xE0)
self.send_command(0X15)
self.send_data(0x00)
self.send_command(0X50) # VCOM AND DATA INTERVAL SETTING
self.send_data(0x11)
self.send_data(0x07)
self.send_command(0X60) # TCON SETTING
self.send_data(0x22)
self.send_command(0x65)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
return 0
def getbuffer(self, image):
img = image
imwidth, imheight = img.size
if(imwidth == self.width and imheight == self.height):
img = img.convert('1')
elif(imwidth == self.height and imheight == self.width):
# image has correct dimensions, but needs to be rotated
img = img.rotate(90, expand=True).convert('1')
else:
logger.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
# return a blank buffer
return [0x00] * (int(self.width/8) * self.height)
buf = bytearray(img.tobytes('raw'))
# The bytes need to be inverted, because in the PIL world 0=black and 1=white, but
# in the e-paper world 0=white and 1=black.
for i in range(len(buf)):
buf[i] ^= 0xFF
return buf
def display(self, imageblack, imagered):
self.send_command(0x10)
# The black bytes need to be inverted back from what getbuffer did
for i in range(len(imageblack)):
imageblack[i] ^= 0xFF
self.send_data2(imageblack)
self.send_command(0x13)
self.send_data2(imagered)
self.send_command(0x12)
epdconfig.delay_ms(300)
self.ReadBusy()
def Clear(self):
buf = [0x00] * (int(self.width/8) * self.height)
buf2 = [0xff] * (int(self.width/8) * self.height)
self.send_command(0x10)
self.send_data2(buf2)
self.send_command(0x13)
self.send_data2(buf)
self.send_command(0x12)
epdconfig.delay_ms(100)
self.ReadBusy()
def sleep(self):
self.send_command(0x02) # POWER_OFF
self.ReadBusy()
self.send_command(0x07) # DEEP_SLEEP
self.send_data(0XA5)
epdconfig.delay_ms(1000)
epdconfig.module_exit()
### END OF FILE ###