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随机折线
通过随机数在屏幕上显示折线,实际使用应根据实际需求进行调整。
import lvgl as lv
import time
from espidf import VSPI_HOST
from ili9XXX import ili9341
from xpt2046 import xpt2046
import fs_driver
import random
# ------------------------------ 屏幕初始化操作 --start------------------------
# 屏幕宽高
WIDTH = 240
HEIGHT = 320
# 创建显示屏对象
disp = ili9341(miso=19, mosi=23, clk=18, cs=5, dc=26, rst=27, power=14, backlight=-1, backlight_on=0, power_on=0, rot=0x80,
spihost=VSPI_HOST, mhz=60, factor=16, hybrid=True, width=WIDTH, height=HEIGHT,
invert=False, double_buffer=True, half_duplex=False, initialize=True)
# 创建触摸屏对象
touch = xpt2046(cs=25, spihost=VSPI_HOST, mosi=-1, miso=-1, clk=-1, cal_y0 = 423, cal_y1=3948)
# ------------------------------ 屏幕初始化操作 --stop------------------------
# 1. 创建显示screen对象。将需要显示的组件添加到这个screen才能显示
scr = lv.obj() # scr====> screen 屏幕
fs_drv = lv.fs_drv_t()
fs_driver.fs_register(fs_drv, 'S')
scr = lv.scr_act()
scr.clean()
# 2. 封装要显示的组件
class MyWidget():
def __init__(self, scr):
# 创建 线 对象
obj_line = lv.line(scr)
# 创建样式
style = lv.style_t()
style.init()
style.set_line_color(lv.palette_main(lv.PALETTE.GREY))
style.set_line_width(6)
style.set_line_rounded(True)
# 添加样式
obj_line.add_style(style, 0)
x1=random.randint(0,240)
y1=random.randint(0,320)
x2=random.randint(0,240)
y2=random.randint(0,320)
x3=random.randint(0,240)
y3=random.randint(0,320)
x4=random.randint(0,240)
y4=random.randint(0,320)
x5=random.randint(0,240)
y5=random.randint(0,320)
x6=random.randint(0,240)
y6=random.randint(0,320)
x7=random.randint(0,240)
y7=random.randint(0,320)
x8=random.randint(0,240)
y8=random.randint(0,320)
x9=random.randint(0,240)
y9=random.randint(0,320)
point = [{"x": x1, "y": y1}, {"x": x2, "y": y2}, {"x": x3, "y":y3}, {"x": x4, "y":y4}, {"x": x5, "y":y5}, {"x": x6, "y":y6}, {"x": x7, "y":y7}, {"x": x8, "y":y8}, {"x": x9, "y":y9}]
obj_line.set_points(point, len(point))
obj_line.center()
# 3. 创建要显示的组件
MyWidget(scr)
# 4. 显示screen对象中的内容
lv.scr_load(scr)
# ------------------------------ 看门狗,用来重启ESP32设备 --start------------------------
try:
from machine import WDT
wdt = WDT(timeout=1000) # enable it with a timeout of 2s
print("提示: 按下Ctrl+C结束程序")
while True:
wdt.feed()
time.sleep(0.9)
except KeyboardInterrupt as ret:
print("程序停止运行,ESP32已经重启...")
time.sleep(10)
# ------------------------------ 看门狗,用来重启ESP32设备 --stop-------------------------
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执行时间: 0.0092959403991699 seconds