本章介绍如何制作电子相册。
通过samba将图片从mac上传到vf2，并用lcd循环显示图片。
功能
1. 同局域网可以访问vf2并存放图片
2. 使用lcd循环播放相册内的图片
使用场所：
1. 户外广告屏幕
2. 家庭电子相册
3. 场馆收集观众照片
官方lcd源码：https://doc.rvspace.org/VisionFive2/Application_Notes/VisionFive2_AN_P_Using_SPI_LCD/VisionFive_Using_GPIO_LED_AN/demo_source_code_spi_lcd.html
部分依赖库安装：
https://bbs.elecfans.com/jishu_2493562_1_1.html
1. 刷vf2的img到sd卡并开机
2. 将vf2插入网线接入局域网
3. 连接上lcd屏st7735
sudo ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
sudo apt -y install vim samba samba-common nginx nodejs net-tools mosquitto mosquitto-dev mosquitto-clients
# vim需要右键输入
:set mouse-=a
sudo vim /etc/samba/smb.conf
[user]
path = home/user
available = yes
browseable = yes
writable = yes
sudo smbpasswd -a user
sudo service smbd restart
# 使用lcd
sudo apt -y install python3-pip libxml2-dev libxslt-dev python3-requests python3-wget python3-bs4 python3-pillow python3-numpy
wget https://files.pythonhosted.org/packages/2e/00/16326e8e01a268ce997b72e70240d7249a550222af82955d9b4a52f8a320/VisionFive.gpio-1.3.3-cp311-cp311-any.whl
mv VisionFive.gpio-1.3.3-cp311-cp311-any.whl VisionFive.gpio-1.3.3-cp311-cp311-linux_riscv64.whl
sudo python3 -m pip install VisionFive.gpio-1.3.3-cp311-cp311-linux_riscv64.whl --break-system-packages
pip show VisionFive.gpio
创建1.8inch_LCD_demo.py文件、lib/LCD2inch4_lib.py库文件以及picture文件夹。
代码在下一章节
1.8inch_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
"""
Demo modification ans new function description
------------------------------------------------------------
I. add the clear() function to fill LCD screen with white
II. give a hexadecimal value of white
III. cycle through multiple pictures
---------------------------------------------------------------
"""
"""
--------------------------------------------------------------- {
Init
"""
WHITE = 0xffff
# 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!")
# return 0
"""The initialization settings of 2inch and 2.4inch are distinguished"""
disp = LCD2inch4_lib.LCD_2inch4(7, 11, SPI_DEVICE)
# disp.lcd_init()
disp.lcd_init_2inch4()
# 获取文件夹中图片名称
folder_path = "./picture"
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:
# 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)
new_size = (128, 160)
resized_image = image.resize(new_size)
disp.lcd_ShowImage(resized_image, 0, 0)
time.sleep(2)
def test_clear():
# print("clear write")
# time.sleep(2)
disp.lcd_clear(WHITE)
print("clear screen")
time.sleep(2)
Black=0x001f
disp.lcd_clear(Black)
print("clear screen")
time.sleep(2)
def main():
print("-----------lcd demo-------------")
# """add the part of displaying pictures circularly"""
# while True:
# try:
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()
LCD2inch4_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_2inch4:
width = 160
height = 128
def __init__(self, rst_pin, dc_pin, dev):
gpio.setmode(gpio.BOARD)
self.rstpin = rst_pin
self.dcpin = dc_pin
self.spidev = dev
print("get spi dev", self.spidev)
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_2inch4(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"""
# print(self.width, self.height)
_buffer = [color] * (self.width * self.height * 2)
self.lcd_setPos(0, 0, self.height, self.width)
# 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(_buffer)):
# self.lcd_spisend(_buffer[i])
self.lcd_sendnbytes(_buffer)
def lcd_ShowImage(self, Image, Xstart, Ystart):
"""Set buffer to value of Python Imaging Library image."""
"""Write display buffer to physical display"""
imwidth, imheight = Image.size
# print(imwidth, imheight)
if imwidth == self.height and imheight == self.width:
# print("match width&height")
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()
self.lcd_sendcmd(0x36) # define read/write scanning direction of frame memory
self.lcd_senddata(0xC0)
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("unmatch width&height")
img = np.asarray(Image)
pix = np.zeros((imheight, imwidth, 3), 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(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)
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