-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathst7735.py
276 lines (226 loc) · 8.18 KB
/
st7735.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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
"""
建议使用 st77xx 驱动
---
合宙 Air10x 系列屏幕扩展板驱动
160(H)RGB x 80(V)
使用方法(以合宙ESP32C3为例):
from machine import SPI, Pin
from st7735 import ST7735
spi = SPI(1, 30000000, sck=Pin(2), mosi=Pin(3))
ST7735(spi, rst=10, dc=6, cs=7, bl=11, width=160, height=80, rotate=1) # 直插横屏显示
ST7735(spi, rst=10, dc=6, cs=7, bl=11, width=160, height=80, rotate=0) # 直插竖屏显示
本款LCD使用的内置控制器为ST7735S，是一款162 x RGB x 132像素的LCD控制器,而本LCD本身的像素为160(H)RGB x 80(V)。由于LCD的显示
起始位置与控制器的原点不一致，因此在使用控制器初始化显示全屏显示区域时需要对做偏移处理：水平方向从第二个像素点开始显示，垂直方向从第27个像素点
开始。这样就可以保证显示的LCD中RAM对应的位置与实际一致。(https://www.waveshare.net/wiki/Pico-LCD-0.96)
屏幕详细信息: https://wiki.luatos.com/peripherals/lcd_air10x/index.html
ST7735S文档: https://www.waveshare.net/w/upload/e/e2/ST7735S_V1.1_20111121.pdf
FrameBuf文档: https://docs.micropython.org/en/latest/library/framebuf.html
字体文档: https://github.com/AntonVanke/MicroPython-Chinese-Font
"""
import gc
import time
import math
import machine
import framebuf
from micropython import const
from drivers.boolpalette import BoolPalette
SWRESET = const(0x01)
SLPOUT = const(0x11)
NORON = const(0x13)
INVOFF = const(0x20)
DISPON = const(0x29)
CASET = const(0x2A)
RASET = const(0x2B)
RAMWR = const(0x2C)
MADCTL = const(0x36)
COLMOD = const(0x3A)
FRMCTR1 = const(0xB1)
FRMCTR2 = const(0xB2)
FRMCTR3 = const(0xB3)
INVCTR = const(0xB4)
PWCTR1 = const(0xC0)
PWCTR2 = const(0xC1)
PWCTR3 = const(0xC2)
PWCTR4 = const(0xC3)
PWCTR5 = const(0xC4)
VMCTR1 = const(0xC5)
GMCTRP1 = const(0xE0)
GMCTRN1 = const(0xE1)
ROTATIONS = [0x00, 0x60, 0xC0, 0xA0] # 旋转方向
def color(r, g, b):
i = (((b & 0xF8) << 8) | ((g & 0xFC) << 3) | (r >> 3)).to_bytes(2, "little")
return (i[0] << 8) + i[1]
RED = color(255, 0, 0)
GREEN = color(0, 255, 0)
BLUE = color(0, 0, 255)
WHITE = color(255, 255, 255)
BLACK = color(0, 0, 0)
class ST7735(framebuf.FrameBuffer):
@staticmethod
def rgb(r, g, b):
"""GUI库要求驱动实现此方法"""
return color(r, g, b)
def __init__(self, spi, rst, dc, cs, bl=None, width=80, height=160, offset=None, rotate=1, rgb=True):
"""
:param spi:
:param rst:
:param dc:
:param cs: 使能
:param bl: 背光
:param width: 宽度
:param height: 高度
:param offset: 偏移 (x, y): (23, -1)|(-1, 23)
:param rotate: 旋转 0 横屏 1 竖屏
:param rgb: RGB 色彩模式
"""
# 根据方向自动设置偏移
self.rotate = rotate
self.offset = offset
self.rgb = rgb
if offset is None and rotate == 1:
self.offset = (-1, 23)
elif offset is None and rotate == 0:
self.offset = (23, -1)
self.width = width
self.height = height
self.spi = spi
self.rst = machine.Pin(rst, machine.Pin.OUT, machine.Pin.PULL_DOWN)
self.dc = machine.Pin(dc, machine.Pin.OUT, machine.Pin.PULL_DOWN)
self.cs = machine.Pin(cs, machine.Pin.OUT, machine.Pin.PULL_DOWN)
if bl is not None:
self.bl = machine.PWM(machine.Pin(bl))
# GUI库要求驱动有此属性
mode = framebuf.GS8 # Use 8bit greyscale for 8 bit color.
self.palette = BoolPalette(mode)
gc.collect()
self.buffer = bytearray(self.height * self.width * 2)
super().__init__(self.buffer, self.width, self.height, framebuf.RGB565)
self.init()
self.set_windows()
self.clear()
def set_windows(self, x_start=None, y_start=None, x_end=None, y_end=None):
"""
设置窗口
:return:
"""
x_start = (x_start + self.offset[0] + 1) if x_start is not None else (self.offset[0] + 1)
x_end = x_end + self.rotate + self.offset[0] if x_end is not None else self.width + self.rotate + \
self.offset[0]
y_start = y_start + self.offset[1] + 1 if y_start is not None else self.offset[1] + 1
y_end = y_end + self.rotate + self.offset[1] if y_end is not None else self.height + self.rotate + \
self.offset[1]
self.write_cmd(CASET)
self.write_data(bytearray([0x00, x_start, 0x00, x_end]))
self.write_cmd(RASET)
self.write_data(bytearray([0x00, y_start, 0x00, y_end]))
self.write_cmd(RAMWR)
def init(self):
self.reset()
self.write_cmd(SWRESET)
time.sleep_us(150)
self.write_cmd(SLPOUT)
time.sleep_us(300)
self.write_cmd(FRMCTR1)
self.write_data(bytearray([0x01, 0x2C, 0x2D]))
self.write_cmd(FRMCTR2)
self.write_data(bytearray([0x01, 0x2C, 0x2D]))
self.write_cmd(FRMCTR3)
self.write_data(bytearray([0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D]))
time.sleep_us(10)
self.write_cmd(INVCTR)
self.write_data(bytearray([0x07]))
self.write_cmd(PWCTR1)
self.write_data(bytearray([0xA2, 0x02, 0x84]))
self.write_cmd(PWCTR2)
self.write_data(bytearray([0xC5]))
self.write_cmd(PWCTR3)
self.write_data(bytearray([0x0A, 0x00]))
self.write_cmd(PWCTR4)
self.write_data(bytearray([0x8A, 0x2A]))
self.write_cmd(PWCTR5)
self.write_data(bytearray([0x8A, 0xEE]))
self.write_cmd(VMCTR1)
self.write_data(bytearray([0x0E]))
self.write_cmd(INVOFF)
self.write_cmd(MADCTL)
self.write_data(bytearray([ROTATIONS[self.rotate] | 0x00 if self.rgb else 0x08]))
self.write_cmd(COLMOD)
self.write_data(bytearray([0x05]))
self.write_cmd(GMCTRP1)
self.write_data(
bytearray([0x02, 0x1c, 0x07, 0x12, 0x37, 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2b, 0x39, 0x00, 0x01, 0x03, 0x10]))
self.write_cmd(GMCTRN1)
self.write_data(
bytearray([0x03, 0x1d, 0x07, 0x06, 0x2e, 0x2c, 0x29, 0x2d, 0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00, 0x02, 0x10]))
self.write_cmd(NORON)
time.sleep_us(10)
self.write_cmd(DISPON)
time.sleep_us(100)
self.cs(1)
def reset(self):
"""
设备重置
:return:
"""
self.rst(1)
time.sleep(0.2)
self.rst(0)
time.sleep(0.2)
self.rst(1)
time.sleep(0.2)
def write_cmd(self, cmd):
self.dc(0)
self.cs(0)
self.spi.write(bytearray([cmd]))
self.cs(1)
def write_data(self, buf):
self.dc(1)
self.cs(0)
self.spi.write(buf)
self.cs(1)
def back_light(self, value):
"""
背光调节
:param value: 背光等级 0 ~ 255
:return:
"""
self.bl.freq(1000)
if value >= 0xff:
value = 0xff
data = value * 0xffff >> 8
self.bl.duty_u16(data)
def clear(self):
"""
清屏
:return:
"""
self.fill(0)
self.show()
def show(self):
"""
显示
:return:
"""
self.set_windows() # 如果没有这行就会偏移
self.write_data(self.buffer)
def circle(self, center, radius, c=color(255, 255, 255), section=100):
"""
画圆
:param c: 颜色
:param center: 中心(x, y)
:param radius: 半径
:param section: 分段
:return:
"""
arr = []
for m in range(section + 1):
x = round(radius * math.cos((2 * math.pi / section) * m - math.pi) + center[0])
y = round(radius * math.sin((2 * math.pi / section) * m - math.pi) + center[1])
arr.append([x, y])
for i in range(len(arr) - 1):
self.line(*arr[i], *arr[i + 1], c)
def image(self, file_name):
with open(file_name, "rb") as bmp:
for b in range(0, 80 * 160 * 2, 1024):
self.buffer[b:b + 1024] = bmp.read(1024)
self.show()