本章整理下我适配的三款lcd。
前两款ST7735｜GC9306相对简单。
ILI9488由于色彩位深RGB666，需要从RGB888转为RGB666，同时需要注意采用比例计算颜色，如果采用
LCD_demo.py
#!/usr/bin/python
"""
Please make sure the 2.4inch LCD Moudle is connected to the correct pins.
The following table describes how to connect the 2.4inch LCD Module to the 40-pin header.
-------------------------------------------------
__2.4inch LCD Module___Pin Number_____Pin Name
VCC 17 3.3 V Power
GND 39 GND
DIN 19 SPI MOSI
CLK 23 SPI SCLK
CS 13 GPIO43 y
DC 11 GPIO42 y -
RST 07 GPIO55 y -
BL 15 GPIO47 y
-------------------------------------------------
"""
import os
import sys
import time
import logging
from PIL import Image
sys.path.append("..")
import VisionFive.boardtype as board_t
# from lib import LCD2inch4_lib
from lib import LCD_ST7735_lib
from lib import LCD_GC9306_lib
from lib import LCD_ILI9488_lib
"""
--------------------------------------------------------------- {
Init
"""
WHITE = 0xffffff
# WHITE = 0x0000
BLUE = 0xFF0000
lcd_num = 3
# 1 st7735, 2 gc9306, 3 ili9488
pin_res = 7
pin_dc = 11
# 初始化lcd
# Determining cpu Type: 1 means visionfive1; 2 means visionfive 2
vf_t = board_t.boardtype()
print("vf_t ",vf_t)
if vf_t == 1:
SPI_DEVICE = "/dev/spidev0.0"
elif vf_t == 2:
SPI_DEVICE = "/dev/spidev1.0"
else:
print("This module can only be run on a VisionFive board!")
"""The initialization settings of 2inch and 2.4inch are distinguished"""
# pin_res, pin_dc
match lcd_num:
case 1:
print("lcd st7735")
disp = LCD_ST7735_lib.LCD_ST7735(7, 11, SPI_DEVICE)
disp.lcd_init_st7735()
case 2:
print("lcd gc9306")
disp = LCD_GC9306_lib.LCD_GC9306(7, 11, SPI_DEVICE)
disp.lcd_init_gc9306()
case 3:
print("lcd ili9488")
disp = LCD_ILI9488_lib.LCD_ILI9488(7, 11, SPI_DEVICE)
disp.lcd_init_ili9488()
case _:
print("unknown lcd")
# 获取文件夹中图片名称
folder_path = "./picture"
# folder_path = "./tmp"
items = os.listdir(folder_path)
file_paths = []
for item in items:
item_path = os.path.join(folder_path, item)
if os.path.isfile(item_path) and "._" not in item and ".DS_Store" not in item:
# if os.path.isfile(item_path): # 只保留文件
file_paths.append(item_path)
"""
} ---------------------------------------------------------------
"""
def show_img(image_path):
image = Image.open(image_path)
disp.lcd_ShowImage(image, 0, 0)
time.sleep(2)
def test_clear():
# print("clear write")
# time.sleep(2)
print("clear screen -- White")
disp.lcd_clear(WHITE)
time.sleep(2)
print("clear screen -- Blue")
if lcd_num == 3:
# Blue=0x03F0000
# Blue=0xFC0000
# Blue=0x3F0000
Blue=0x03F000
else:
Blue=0x001f
disp.lcd_clear(Blue)
time.sleep(2)
def main():
print("-----------lcd demo-------------")
# """add the part of displaying pictures circularly"""
# while True:
# try:
# test_clear()
# test picture and lcd xy direction
# show_img("./tmp/line.jpg")
# show_img("./tmp/line2.jpg")
# show_img("./tmp/line320.jpg")
# show_img("./tmp/line480.jpg")
# show_img("./picture/parrot.bmp")
# show_img("./picture/code.jpg")
# show_img("./picture/IMG_4512.jpeg")
# show_img("./picture/visionfive2.png")
for path in file_paths:
print(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(time.time())))
path_tmp = path
print(path_tmp)
show_img(path_tmp)
time.sleep(2)
# except KeyboardInterrupt:
# break
print("Exit demo!")
if __name__ == '__main__':
main()
LCD_ILI9488_lib.py
import os
import sys
import time
import logging
import VisionFive.spi as spi
import VisionFive.gpio as gpio
import numpy as np
from PIL import Image, ImageDraw, ImageFont
class LCD_ILI9488:
width = 320
height = 480
def __init__(self, rst_pin, dc_pin, dev):
gpio.setmode(gpio.BOARD)
self.pin_rst = rst_pin
self.pin_dc = dc_pin
self.pin_bl = 15
self.spidev = dev
spi.getdev(self.spidev)
"""Reset the maximum clock frequency of communication"""
"""The display speed of the picture is positively correlated with the clock frequency"""
# spi.setmode(500000, 0, 8)
spi.setmode(40000000, 0, 8)
gpio.setup(self.pin_rst, gpio.OUT)
gpio.setup(self.pin_dc, gpio.OUT)
gpio.setup(self.pin_bl, gpio.OUT)
def __del__(self):
spi.freedev()
"""add a short delay for each change of electrical level"""
def lcd_reset(self):
gpio.output(self.pin_bl, gpio.HIGH)
# time.sleep(0.120)
# gpio.output(self.pin_rst, gpio.HIGH)
# time.sleep(0.20)
gpio.output(self.pin_rst, gpio.LOW)
time.sleep(0.100)
gpio.output(self.pin_rst, gpio.HIGH)
time.sleep(0.100)
gpio.output(self.pin_bl, gpio.HIGH)
# self.lcd_sendcmd(0x01)
def lcd_spisend(self, data):
spi.transfer(data)
def lcd_sendcmd(self, cmd):
gpio.output(self.pin_dc, gpio.LOW)
spi.transfer(cmd)
def lcd_senddata(self, data):
gpio.output(self.pin_dc, gpio.HIGH)
spi.transfer(data)
"""write multiple bytes"""
def lcd_sendnbytes(self, data):
gpio.output(self.pin_dc, gpio.HIGH)
spi.write(data)
"""common registers' initialization of 2.4inch LCD module"""
def lcd_init_ili9488(self):
self.lcd_reset()
# self.lcd_sendcmd(0x11)
# self.lcd_senddata(0x00)
# time.sleep(0.200)
self.lcd_sendcmd(0xE0)
self.lcd_senddata(0x00)
self.lcd_senddata(0x03)
self.lcd_senddata(0x09)
self.lcd_senddata(0x08)
self.lcd_senddata(0x16)
self.lcd_senddata(0x0A)
self.lcd_senddata(0x3F)
self.lcd_senddata(0x78)
self.lcd_senddata(0x4C)
self.lcd_senddata(0x09)
self.lcd_senddata(0x0A)
self.lcd_senddata(0x08)
self.lcd_senddata(0x16)
self.lcd_senddata(0x1A)
self.lcd_senddata(0x0F)
self.lcd_sendcmd(0xE1)
self.lcd_senddata(0x00)
self.lcd_senddata(0x16)
self.lcd_senddata(0x19)
self.lcd_senddata(0x03)
self.lcd_senddata(0x0F)
self.lcd_senddata(0x05)
self.lcd_senddata(0x32)
self.lcd_senddata(0x45)
self.lcd_senddata(0x46)
self.lcd_senddata(0x04)
self.lcd_senddata(0x0E)
self.lcd_senddata(0x0D)
self.lcd_senddata(0x35)
self.lcd_senddata(0x37)
self.lcd_senddata(0x0F)
self.lcd_sendcmd(0xC0)
self.lcd_sendcmd(0x17)
self.lcd_senddata(0x15)
self.lcd_sendcmd(0xC1)
self.lcd_senddata(0x41)
self.lcd_sendcmd(0xC5)
self.lcd_sendcmd(0x00)
self.lcd_senddata(0x12)
self.lcd_senddata(0x80)
self.lcd_sendcmd(0x36)
# self.lcd_sendcmd(0x48)
# self.lcd_sendcmd(0x40)
# self.lcd_sendcmd(0x88)
# self.lcd_sendcmd(0x28)
self.lcd_sendcmd(0x88)
self.lcd_sendcmd(0x3A)
self.lcd_senddata(0x66) # color bit : 0x66 18bit, 0x77 24bit, 0x55 16bit
self.lcd_sendcmd(0xC8)
self.lcd_senddata(0xB1)
self.lcd_sendcmd(0xB0)
self.lcd_sendcmd(0x80)
self.lcd_sendcmd(0xB1)
self.lcd_sendcmd(0x80)
# SDA_EN = 0, DIN and SDO pins are used for 3/4 wire serial interface.
# SDA_EN = 1, DIN/SDA pin is used for 3/4 wire serial interface and SDO pin is not used.
self.lcd_sendcmd(0xB4)
self.lcd_sendcmd(0x02)
self.lcd_sendcmd(0xB6)
self.lcd_sendcmd(0x02)
self.lcd_senddata(0x02)
self.lcd_sendcmd(0xE9)
self.lcd_senddata(0x00)
self.lcd_sendcmd(0x53)
self.lcd_senddata(0x28)
self.lcd_sendcmd(0x51)
self.lcd_senddata(0x7F)
self.lcd_sendcmd(0xF7)
self.lcd_senddata(0xA9)
self.lcd_senddata(0x51)
self.lcd_senddata(0x2C)
self.lcd_senddata(0x02)
self.lcd_sendcmd(0x11)
# self.lcd_senddata(0x00)
time.sleep(0.100)
self.lcd_sendcmd(0x29)
def lcd_setPos(self, Xstart, Ystart, Xend, Yend):
self.lcd_sendcmd(0x2A)
self.lcd_senddata(Xstart >> 8)
self.lcd_senddata(Xstart & 0xFF)
self.lcd_senddata((Xend - 1) >> 8)
self.lcd_senddata((Xend - 1) & 0xFF)
self.lcd_sendcmd(0x2B)
self.lcd_senddata(Ystart >> 8)
self.lcd_senddata(Ystart & 0xFF)
self.lcd_senddata((Yend - 1) >> 8)
self.lcd_senddata((Yend - 1) & 0xFF)
self.lcd_sendcmd(0x2C)
def lcd_clear(self, color):
"""Clear contents of image buffer"""
_buffer = [color] * (self.width * self.height * 3) # * 3
print(_buffer[0],_buffer[1],_buffer[2])
# self.lcd_setPos(0, 0, self.width, self.height)
self.lcd_setPos(0, 0, self.width, self.height)
gpio.output(self.pin_dc, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(_buffer)):
# self.lcd_spisend(_buffer[i])
self.lcd_sendnbytes(_buffer)
# self.lcd_sendcmd(0x29)
def Image_to_RGB565(self, Image):
img = np.asarray(Image)
pix = np.zeros((self.width, self.height, 3), dtype=np.uint8)
# RGB888 >> RGB565
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
# return pix.flatten().tolist()
return pix
def Image_to_RGB666(self, Image):
# 将RGB888转换为RGB666
img = np.asarray(Image)
# 创建一个(宽度, 高度, 3)的数组，每个通道6位，用uint8存储
pix = np.zeros((self.width, self.height, 3), dtype=np.uint8)
# RGB888 >> RGB666转换
# 每个通道保留高6位（右移2位丢弃最低2位）
pix[..., 0] = np.right_shift(img[..., 0], 2) # 红色通道(6位)
pix[..., 1] = np.right_shift(img[..., 1], 2) # 绿色通道(6位)
pix[..., 2] = np.right_shift(img[..., 2], 2) # 蓝色通道(6位)
return pix
def Image_RGB888_to_RGB666(self, Image):
img = np.asarray(Image)
pix = np.zeros((self.height, self.width, 3), dtype=np.uint8)
pix[..., [0]] = np.left_shift(np.left_shift(img[..., [0]], 2), 2)
pix[..., [1]] = np.left_shift(np.left_shift(img[..., [1]], 2), 2)
pix[..., [2]] = np.left_shift(np.left_shift(img[..., [2]], 2), 2)
return pix.flatten().tolist()
def lcd_ShowImage(self, Image, Xstart, Ystart):
"""Set buffer to value of Python Imaging Library image."""
"""Write display buffer to physical display"""
print("image.mode", Image.mode)
tmp_width, tmp_height = Image.size
print("sss",tmp_width,tmp_height)
if tmp_width > tmp_height:
print("change width to height")
new_size = (self.height, self.width)
else:
new_size = (self.width, self.height)
Image = Image.resize(new_size)
print("new_size",new_size)
imwidth, imheight = Image.size
print("image: width = ", imwidth, ", height = ", imheight)
if Image.mode == "RGBA":
Image = Image.convert("RGB")
if imwidth == self.height and imheight == self.width:
img_array = np.asarray(Image, dtype=np.uint8) # 形状为 (height, width, 3)，值范围[0,255]
# 创建存储6位数据的数组
pix = np.zeros((self.width, self.height, 3), dtype=np.uint8)
# 比例缩放：将8位值[0,255]映射到6位值[0,63]
# 公式：6位值 = 8位值 × (63/255)，四舍五入取整
scale_factor = 63 * 4 / 255 # 缩放因子
pix = np.round(img_array * scale_factor).astype(np.uint8)
pix = pix.flatten().tolist()
self.lcd_sendcmd(
0x36
) # define read/write scanning direction of frame memory
self.lcd_senddata(0x68)
self.lcd_setPos(0, 0, self.height, self.width)
gpio.output(self.pin_dc, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix),1):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
else:
print("same direction")
img_array = np.asarray(Image, dtype=np.uint8) # 形状为 (height, width, 3)，值范围[0,255]
# 创建存储6位数据的数组
pix = np.zeros((self.height, self.width, 3), dtype=np.uint8)
# 比例缩放：将8位值[0,255]映射到6位值[0,63]
# 公式：6位值 = 8位值 × (63/255)，四舍五入取整
scale_factor = 63 * 4 / 255 # 缩放因子
pix = np.round(img_array * scale_factor).astype(np.uint8)
pix = pix.flatten().tolist()
self.lcd_sendcmd(0x36)
# self.lcd_senddata(0xC8)
self.lcd_senddata(0x88)
self.lcd_setPos(0, 0, self.width, self.height)
gpio.output(self.pin_dc, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix)):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
LCD_GC9306_lib.py
import os
import sys
import time
import logging
import VisionFive.spi as spi
import VisionFive.gpio as gpio
import numpy as np
from PIL import Image, ImageDraw, ImageFont
class LCD_GC9306:
width = 240
height = 320
# width = 320
# height = 240
def __init__(self, rst_pin, dc_pin, dev):
gpio.setmode(gpio.BOARD)
self.rstpin = rst_pin
self.dcpin = dc_pin
self.spidev = dev
spi.getdev(self.spidev)
"""Reset the maximum clock frequency of communication"""
"""The display speed of the picture is positively correlated with the clock frequency"""
# spi.setmode(500000, 0, 8)
spi.setmode(40000000, 0, 8)
gpio.setup(self.rstpin, gpio.OUT)
gpio.setup(self.dcpin, gpio.OUT)
def __del__(self):
spi.freedev()
"""add a short delay for each change of electrical level"""
def lcd_reset(self):
gpio.output(self.rstpin, gpio.HIGH)
time.sleep(0.500)
gpio.output(self.rstpin, gpio.LOW)
time.sleep(0.500)
gpio.output(self.rstpin, gpio.HIGH)
time.sleep(0.500)
def lcd_spisend(self, data):
spi.transfer(data)
def lcd_sendcmd(self, cmd):
gpio.output(self.dcpin, gpio.LOW)
spi.transfer(cmd)
def lcd_senddata(self, data):
gpio.output(self.dcpin, gpio.HIGH)
spi.transfer(data)
"""write multiple bytes"""
def lcd_sendnbytes(self, data):
gpio.output(self.dcpin, gpio.HIGH)
spi.write(data)
"""common registers' initialization of 2.4inch LCD module"""
def lcd_init_gc9306(self):
self.lcd_reset()
# self.lcd_sendcmd(0x01) # Software reset
# time.sleep(0.150)
self.lcd_sendcmd(0x11)
time.sleep(0.150)
time.sleep(0.50)
#display control setting
self.lcd_sendcmd(0xfe)
self.lcd_sendcmd(0xef)
self.lcd_sendcmd(0x36)
self.lcd_senddata(0x48)
self.lcd_sendcmd(0x3A)
self.lcd_senddata(0x05)
self.lcd_sendcmd(0xad)
self.lcd_senddata(0x33)
self.lcd_sendcmd(0xaf)
self.lcd_senddata(0x55)
self.lcd_sendcmd(0xae)
self.lcd_senddata(0x2b)
#GC9306 Power Sequence
self.lcd_sendcmd(0xa4)
self.lcd_senddata(0x44)
self.lcd_senddata(0x44)
self.lcd_sendcmd(0xa5)
self.lcd_senddata(0x42)
self.lcd_senddata(0x42)
self.lcd_sendcmd(0xaa)
self.lcd_senddata(0x88)
self.lcd_senddata(0x88)
self.lcd_sendcmd(0xae)
self.lcd_senddata(0x2b)
self.lcd_sendcmd(0xe8)
self.lcd_senddata(0x11)
self.lcd_senddata(0x0b)
self.lcd_sendcmd(0xe3)
self.lcd_senddata(0x01)
self.lcd_senddata(0x10)
self.lcd_sendcmd(0xff)
self.lcd_senddata(0x61)
self.lcd_sendcmd(0xac)
self.lcd_senddata(0x00)
self.lcd_sendcmd(0xaf)
self.lcd_senddata(0x67)
self.lcd_sendcmd(0xa6)
self.lcd_senddata(0x2a)
self.lcd_senddata(0x2a)
self.lcd_sendcmd(0xa7)
self.lcd_senddata(0x2b)
self.lcd_senddata(0x2b)
self.lcd_sendcmd(0xa8)
self.lcd_senddata(0x18)
self.lcd_senddata(0x18)
self.lcd_sendcmd(0xa9)
self.lcd_senddata(0x2a)
self.lcd_senddata(0x2a)
#display window 240X320 匹配mode
self.lcd_sendcmd(0x2a)
self.lcd_senddata(0x00)
self.lcd_senddata(0x00)
self.lcd_senddata(0x00)
self.lcd_senddata(0xef) #MIPI_DCS_SET_COLUMN_ADDRESS - 240
self.lcd_sendcmd(0x2b)
self.lcd_senddata(0x00)
self.lcd_senddata(0x00)
self.lcd_senddata(0x01)
self.lcd_senddata(0x3f) #MIPI_DCS_SET_PAGE_ADDRESS - 320
self.lcd_sendcmd(0x2c) #MIPI_DCS_WRITE_MEMORY_START
#GC9306 Gamma Sequence
self.lcd_sendcmd(0xF0)
self.lcd_senddata(0x02)
self.lcd_senddata(0x00)
self.lcd_senddata(0x00)
self.lcd_senddata(0x1b)
self.lcd_senddata(0x1f)
self.lcd_senddata(0x0b)
self.lcd_sendcmd(0xF1)
self.lcd_senddata(0x01)
self.lcd_senddata(0x03)
self.lcd_senddata(0x00)
self.lcd_senddata(0x28)
self.lcd_senddata(0x2b)
self.lcd_senddata(0x0e)
self.lcd_sendcmd(0xF2)
self.lcd_senddata(0x0b)
self.lcd_senddata(0x08)
self.lcd_senddata(0x3b)
self.lcd_senddata(0x04)
self.lcd_senddata(0x03)
self.lcd_senddata(0x4c)
self.lcd_sendcmd(0xF3)
self.lcd_senddata(0x0e)
self.lcd_senddata(0x07)
self.lcd_senddata(0x46)
self.lcd_senddata(0x04)
self.lcd_senddata(0x05)
self.lcd_senddata(0x51)
self.lcd_sendcmd(0xF4)
self.lcd_senddata(0x08)
self.lcd_senddata(0x15)
self.lcd_senddata(0x15)
self.lcd_senddata(0x1f)
self.lcd_senddata(0x22)
self.lcd_senddata(0x0F)
self.lcd_sendcmd(0xF5)
self.lcd_senddata(0x0b)
self.lcd_senddata(0x13)
self.lcd_senddata(0x11)
self.lcd_senddata(0x1f)
self.lcd_senddata(0x21)
self.lcd_senddata(0x0F)
# Sleep Out
self.lcd_sendcmd(0x11) #MIPI_DCS_EXIT_SLEEP_MODE
time.sleep(0.100)
self.lcd_sendcmd(0x2c) #MIPI_DCS_WRITE_MEMORY_START
self.lcd_sendcmd(0x20) #MIPI_DCS_EXIT_INVERT_MODE
# display on
self.lcd_sendcmd(0x29) #MIPI_DCS_SET_DISPLAY_ON - 29
time.sleep(0.100)
def lcd_setPos(self, Xstart, Ystart, Xend, Yend):
self.lcd_sendcmd(0x2A)
self.lcd_senddata(Xstart >> 8)
self.lcd_senddata(Xstart & 0xFF)
self.lcd_senddata((Xend - 1) >> 8)
self.lcd_senddata((Xend - 1) & 0xFF)
self.lcd_sendcmd(0x2B)
self.lcd_senddata(Ystart >> 8)
self.lcd_senddata(Ystart & 0xFF)
self.lcd_senddata((Yend - 1) >> 8)
self.lcd_senddata((Yend - 1) & 0xFF)
self.lcd_sendcmd(0x2C)
def lcd_clear(self, color):
"""Clear contents of image buffer"""
_buffer = [color] * (self.width * self.height * 2)
# self.lcd_setPos(0, 0, self.width, self.height)
self.lcd_setPos(0, 0, self.height, self.width)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(_buffer)):
# self.lcd_spisend(_buffer[i])
self.lcd_sendnbytes(_buffer)
def Image_to_RGB565(self, Image):
img = np.asarray(Image)
pix = np.zeros((self.width, self.height, 2), dtype=np.uint8)
# RGB888 >> RGB565
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
# return pix.flatten().tolist()
return pix
def lcd_ShowImage(self, Image, Xstart, Ystart):
"""Set buffer to value of Python Imaging Library image."""
"""Write display buffer to physical display"""
tmp_width, tmp_height = Image.size
print("sss",tmp_width,tmp_height)
if tmp_width > tmp_height:
new_size = (self.height, self.width)
else:
new_size = (self.width, self.height)
Image = Image.resize(new_size)
print("new_size",new_size)
imwidth, imheight = Image.size
print("image: width = ", imwidth, ", height = ", imheight)
if imwidth == self.height and imheight == self.width:
img = np.asarray(Image)
pix = np.zeros((self.width, self.height, 2), dtype=np.uint8)
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
self.lcd_sendcmd(
0x36
) # define read/write scanning direction of frame memory
self.lcd_senddata(0x38)
self.lcd_setPos(0, 0, self.height, self.width)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix),1):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
else:
print("same direction")
img = np.asarray(Image)
pix = np.zeros((self.height, self.width, 2), dtype=np.uint8)
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
self.lcd_sendcmd(0x36)
# self.lcd_senddata(0xC8)
self.lcd_senddata(0x48)
self.lcd_setPos(0, 0, self.width, self.height)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix)):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
LCD_ST7735_lib.py
import os
import sys
import time
import logging
import VisionFive.spi as spi
import VisionFive.gpio as gpio
import numpy as np
from PIL import Image, ImageDraw, ImageFont
class LCD_ST7735:
width = 128
height = 160
def __init__(self, rst_pin, dc_pin, dev):
gpio.setmode(gpio.BOARD)
self.rstpin = rst_pin
self.dcpin = dc_pin
self.spidev = dev
spi.getdev(self.spidev)
"""Reset the maximum clock frequency of communication"""
"""The display speed of the picture is positively correlated with the clock frequency"""
# spi.setmode(500000, 0, 8)
spi.setmode(40000000, 0, 8)
gpio.setup(self.rstpin, gpio.OUT)
gpio.setup(self.dcpin, gpio.OUT)
def __del__(self):
spi.freedev()
"""add a short delay for each change of electrical level"""
def lcd_reset(self):
gpio.output(self.rstpin, gpio.HIGH)
time.sleep(0.500)
gpio.output(self.rstpin, gpio.LOW)
time.sleep(0.500)
gpio.output(self.rstpin, gpio.HIGH)
time.sleep(0.500)
def lcd_spisend(self, data):
spi.transfer(data)
def lcd_sendcmd(self, cmd):
gpio.output(self.dcpin, gpio.LOW)
spi.transfer(cmd)
def lcd_senddata(self, data):
gpio.output(self.dcpin, gpio.HIGH)
spi.transfer(data)
"""write multiple bytes"""
def lcd_sendnbytes(self, data):
gpio.output(self.dcpin, gpio.HIGH)
spi.write(data)
"""common registers' initialization of 2.4inch LCD module"""
def lcd_init_st7735(self):
self.lcd_reset()
self.lcd_sendcmd(0x01) # sw reset
time.sleep(0.150)
self.lcd_sendcmd(0x11) # sw reset
time.sleep(0.500)
self.lcd_sendcmd(0xB1)
self.lcd_senddata(0x05)
self.lcd_senddata(0x3C)
self.lcd_senddata(0x3C)
self.lcd_sendcmd(0xB2)
self.lcd_senddata(0x05)
self.lcd_senddata(0x3C)
self.lcd_senddata(0x3C)
self.lcd_sendcmd(0xB3)
self.lcd_senddata(0x05)
self.lcd_senddata(0x3C)
self.lcd_senddata(0x3C)
self.lcd_senddata(0x05)
self.lcd_senddata(0x3C)
self.lcd_senddata(0x3C)
self.lcd_sendcmd(0xB4)
self.lcd_senddata(0x03)
# ST7735s Power Sequence
self.lcd_sendcmd(0xC0)
self.lcd_senddata(0x28)
self.lcd_senddata(0x08)
self.lcd_senddata(0x04)
self.lcd_sendcmd(0xC1)
self.lcd_senddata(0xC0)
self.lcd_sendcmd(0xC2)
self.lcd_senddata(0x0D)
self.lcd_senddata(0x00)
self.lcd_sendcmd(0xC3)
self.lcd_senddata(0x8D)
self.lcd_senddata(0x2A)
self.lcd_sendcmd(0xC4)
self.lcd_senddata(0x8D)
self.lcd_senddata(0xEE)
self.lcd_sendcmd(0xC5)
self.lcd_senddata(0x1A)
self.lcd_sendcmd(0x36)
self.lcd_senddata(0xC0)
# gamma
self.lcd_sendcmd(0xE0)
self.lcd_senddata(0x04)
self.lcd_senddata(0x22)
self.lcd_senddata(0x07)
self.lcd_senddata(0x0A)
self.lcd_senddata(0x2E)
self.lcd_senddata(0x30)
self.lcd_senddata(0x25)
self.lcd_senddata(0x2A)
self.lcd_senddata(0x28)
self.lcd_senddata(0x26)
self.lcd_senddata(0x2E)
self.lcd_senddata(0x3A)
self.lcd_senddata(0x00)
self.lcd_senddata(0x01)
self.lcd_senddata(0x03)
self.lcd_senddata(0x13)
self.lcd_sendcmd(0xE1)
self.lcd_senddata(0x04)
self.lcd_senddata(0x16)
self.lcd_senddata(0x06)
self.lcd_senddata(0x0D)
self.lcd_senddata(0x2D)
self.lcd_senddata(0x26)
self.lcd_senddata(0x23)
self.lcd_senddata(0x27)
self.lcd_senddata(0x27)
self.lcd_senddata(0x25)
self.lcd_senddata(0x2D)
self.lcd_senddata(0x3B)
self.lcd_senddata(0x00)
self.lcd_senddata(0x01)
self.lcd_senddata(0x04)
self.lcd_senddata(0x13)
self.lcd_sendcmd(0x3A)
self.lcd_senddata(0x05)
self.lcd_sendcmd(0x29) # Display on
def lcd_setPos(self, Xstart, Ystart, Xend, Yend):
self.lcd_sendcmd(0x2A) # Column
self.lcd_senddata(Xstart >> 8)
self.lcd_senddata(Xstart & 0xFF)
self.lcd_senddata((Xend - 1) >> 8)
self.lcd_senddata((Xend - 1) & 0xFF)
self.lcd_sendcmd(0x2B) # Row
self.lcd_senddata(Ystart >> 8)
self.lcd_senddata(Ystart & 0xFF)
self.lcd_senddata((Yend - 1) >> 8)
self.lcd_senddata((Yend - 1) & 0xFF)
self.lcd_sendcmd(0x2C) # memory write
def lcd_clear(self, color):
"""Clear contents of image buffer"""
_buffer = [color] * (self.width * self.height * 2)
# self.lcd_setPos(0, 0, self.width, self.height)
self.lcd_setPos(0, 0, self.height, self.width)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(_buffer)):
# self.lcd_spisend(_buffer[i])
self.lcd_sendnbytes(_buffer)
def Image_to_RGB565(self, Image):
img = np.asarray(Image)
pix = np.zeros((self.width, self.height, 2), dtype=np.uint8)
# RGB888 >> RGB565
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
# return pix.flatten().tolist()
return pix
def lcd_ShowImage(self, Image, Xstart, Ystart):
"""Set buffer to value of Python Imaging Library image."""
"""Write display buffer to physical display"""
tmp_width, tmp_height = Image.size
print("sss",tmp_width,tmp_height)
if tmp_width > tmp_height:
new_size = (self.height, self.width)
else:
new_size = (self.width, self.height)
Image = Image.resize(new_size)
print("new_size",new_size)
imwidth, imheight = Image.size
print("image: width = ", imwidth, ", height = ", imheight)
if imwidth == self.height and imheight == self.width:
img = np.asarray(Image)
pix = np.zeros((self.width, self.height, 2), dtype=np.uint8)
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
self.lcd_sendcmd(
0x36
) # define read/write scanning direction of frame memory
self.lcd_senddata(0xA0)
self.lcd_setPos(0, 0, self.height, self.width)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix),1):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
else:
print("same direction")
img = np.asarray(Image)
pix = np.zeros((self.height, self.width, 2), dtype=np.uint8)
pix[..., [0]] = np.add(
np.bitwise_and(img[..., [0]], 0xF8), np.right_shift(img[..., [1]], 5)
)
pix[..., [1]] = np.add(
np.bitwise_and(np.left_shift(img[..., [1]], 3), 0xE0),
np.right_shift(img[..., [2]], 3),
)
pix = pix.flatten().tolist()
self.lcd_sendcmd(0x36)
# self.lcd_senddata(0xC8)
self.lcd_senddata(0xC0)
self.lcd_setPos(0, 0, self.width, self.height)
gpio.output(self.dcpin, gpio.HIGH)
"""modify the original single byte write to multi byte write"""
# for i in range(0,len(pix)):
# self.lcd_spisend(pix[i])
self.lcd_sendnbytes(pix)
效果我就放ILI9488的了，st7735见上一篇。
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