-
Notifications
You must be signed in to change notification settings - Fork 0
/
GDEP073E01.py
219 lines (178 loc) · 6.97 KB
/
GDEP073E01.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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
# Modified from:
# https://github.com/pimoroni/inky/blob/main/library/inky/inky_ac073tc1a.py
# MIT License
#
# Copyright (c) 2018 Pimoroni Ltd.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation 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
# furnished 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 FOR 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 time
import warnings
import numpy
import numpy.typing
import RPi.GPIO as GPIO
import spidev
from display_protocol import Display
class GDEP073E01:
DC_PIN = 22
RESET_PIN = 27
BUSY_PIN = 17
BLACK = 0
WHITE = 1
YELLOW = 2
RED = 3
# Actually 4 is unused
BLUE = 4 # Actually 5
GREEN = 5 # Actually 6
WIDTH = 800
HEIGHT = 480
_PSR = 0x00
_PWR = 0x01
_POF = 0x02
_POFS = 0x03
_PON = 0x04
_BTST1 = 0x05
_BTST2 = 0x06
_BTST3 = 0x08
_DTM = 0x10
_DRF = 0x12
_IPC = 0x13
_PLL = 0x30
_TSE = 0x41
_CDI = 0x50
_TCON = 0x60
_TRES = 0x61
_VDCS = 0x82
_T_VDCS = 0x84
_AGID = 0x86
_CMDH = 0xAA
_CCSET = 0xE0
_PWS = 0xE3
_TSSET = 0xE6
_SPI_COMMAND = 0
_SPI_DATA = 1
buf: numpy.typing.NDArray[numpy.uint8]
def __init__(self, *, cs_channel=0, dc_pin=DC_PIN, reset_pin=RESET_PIN, busy_pin=BUSY_PIN):
"""
:param cs_channel: channel for SPI communication
:param dc_pin: data/command pin
:param reset_pin: device reset pin
:param busy_pin: device busy/wait pin
"""
self._spi_bus = None
self._gpio = None
self.buf = numpy.zeros((GDEP073E01.HEIGHT, GDEP073E01.WIDTH), dtype=numpy.uint8)
self.dc_pin = dc_pin
self.reset_pin = reset_pin
self.busy_pin = busy_pin
self.cs_channel = cs_channel
def show(self):
"""
Show buffer on display.
:param busy_wait: If True, wait for display update to finish before returning.
"""
buf = self.buf.flatten()
# Remove invalid colors, correct for unused index 4
buf = numpy.clip(buf, 0, 5)
buf[buf >= 4] += 1
buf = ((buf[::2] << 4) & 0xF0) | (buf[1::2] & 0x0F)
self._update(buf.astype('uint8').tolist())
def _setup(self):
"""Set up IO if needed and reset display."""
if self._gpio is None:
self._gpio = GPIO
self._gpio.setmode(self._gpio.BCM)
self._gpio.setwarnings(False)
self._gpio.setup(self.dc_pin, self._gpio.OUT, initial=self._gpio.LOW, pull_up_down=self._gpio.PUD_OFF)
self._gpio.setup(self.reset_pin, self._gpio.OUT, initial=self._gpio.HIGH, pull_up_down=self._gpio.PUD_OFF)
self._gpio.setup(self.busy_pin, self._gpio.IN, pull_up_down=self._gpio.PUD_OFF)
if self._spi_bus is None:
self._spi_bus = spidev.SpiDev()
self._spi_bus.open(0, self.cs_channel)
self._spi_bus.max_speed_hz = 5000000
self._gpio.output(self.reset_pin, self._gpio.LOW)
time.sleep(0.1)
self._gpio.output(self.reset_pin, self._gpio.HIGH)
time.sleep(0.1)
self._gpio.output(self.reset_pin, self._gpio.LOW)
time.sleep(0.1)
self._gpio.output(self.reset_pin, self._gpio.HIGH)
self._busy_wait(1.0)
# Sending init commands to display
self._send_command(GDEP073E01._CMDH, [0x49, 0x55, 0x20, 0x08, 0x09, 0x18])
self._send_command(GDEP073E01._PWR, [0x3F, 0x00, 0x32, 0x2A, 0x0E, 0x2A])
self._send_command(GDEP073E01._PSR, [0x5F, 0x69])
self._send_command(GDEP073E01._POFS, [0x00, 0x54, 0x00, 0x44])
self._send_command(GDEP073E01._BTST1, [0x40, 0x1F, 0x1F, 0x2C])
self._send_command(GDEP073E01._BTST2, [0x6F, 0x1F, 0x16, 0x25])
self._send_command(GDEP073E01._BTST3, [0x6F, 0x1F, 0x1F, 0x22])
self._send_command(GDEP073E01._IPC, [0x00, 0x04])
self._send_command(GDEP073E01._PLL, 0x02)
self._send_command(GDEP073E01._TSE, 0x00)
self._send_command(GDEP073E01._CDI, 0x3F)
self._send_command(GDEP073E01._TCON, [0x02, 0x00])
self._send_command(GDEP073E01._TRES, [0x03, 0x20, 0x01, 0xE0])
self._send_command(GDEP073E01._VDCS, 0x1E)
self._send_command(GDEP073E01._T_VDCS, 0x01)
self._send_command(GDEP073E01._AGID, 0x00)
self._send_command(GDEP073E01._PWS, 0x2F)
self._send_command(GDEP073E01._CCSET, 0x00)
self._send_command(GDEP073E01._TSSET, 0x00)
def _busy_wait(self, timeout=40):
# If the busy_pin is *high* (pulled up by host)
# then assume we're not getting a signal from display
# and wait the timeout period to be safe.
if self._gpio.input(self.busy_pin):
warnings.warn("Busy Wait: Held high. Waiting for {:0.2f}s".format(timeout))
time.sleep(timeout)
return
# If the busy_pin is *low* (pulled down by display)
# then wait for it to high.
t_start = time.time()
while not self._gpio.input(self.busy_pin):
time.sleep(0.01)
if time.time() - t_start >= timeout:
warnings.warn("Busy Wait: Timed out after {:0.2f}s".format(time.time() - t_start))
return
def _update(self, buf):
self._setup()
self._send_command(GDEP073E01._DTM, buf)
self._send_command(GDEP073E01._PON)
self._busy_wait(0.4)
self._send_command(GDEP073E01._DRF, 0x00)
self._busy_wait(45.0) # 41 seconds in testing
self._send_command(GDEP073E01._POF, 0x00)
self._busy_wait(0.4)
def _spi_write(self, dc, values):
self._gpio.output(self.dc_pin, dc)
if type(values) is str:
values = [ord(c) for c in values]
for byte_value in values:
self._spi_bus.xfer([byte_value])
def _send_command(self, command, data=None):
self._spi_write(GDEP073E01._SPI_COMMAND, [command])
if data is not None:
self._send_data(data)
def _send_data(self, data):
try:
_ = iter(data)
except TypeError:
data = [data]
self._spi_write(GDEP073E01._SPI_DATA, data)
def init_display() -> Display:
return GDEP073E01()