esp32 s3+lv_micropython物理键盘响应程序
#目前esp32 s3+lv_micropython v1.91无法使用lvgl的一些宏定义，一使用就会程序出错，只能根据文档把宏定义改为对应的数字，如LV_KEY_NEXT等定义（对应的是数字9）都不能用，或者它改了名字我用不了。这里记录一下吧。我使用gpio的p0来做实验。
from machine import Pin, SoftSPI,SPI
from st7789 import ST7789
from st7789 import CYAN
from st7789 import BLACK
from st7789 import BLUE
#hspi = SPI(2, baudrate=80000000, polarity=1, sck=Pin(14), mosi=Pin(13), miso=Pin(12))
'''
scl 14
sda 13
rst 9
dc 8
cs 11
blk 7
'''
sck=Pin(14, Pin.OUT)
mosi=Pin(13, Pin.OUT)
miso=Pin(12, Pin.OUT)
rst =Pin(9, Pin.OUT)
dc=Pin(8, Pin.OUT)
cs=Pin(11, Pin.OUT)
blk=Pin(7, Pin.OUT)
#rst.on() #一定要off才有反映
cs.off()
blk.on()
#display = ST7789(hspi,320,240,reset=Pin(9),dc=Pin(8))
#display.fill(CYAN)
import lvgl as lv
from ili9XXX import st7789
import fs_driver
from espidf import VSPI_HOST
import time
import machine
print(str(machine.freq()))
machine.freq(240000000)
print(str(machine.freq()))
#gc.collect()
#0.这个是关键的初始化函数
disp=st7789(
mosi=13,
clk=14,
cs=11,
dc=8,
rst=9,
mhz=80,
spihost=VSPI_HOST,
factor=16,#这个参数一定要设置为16，这样才能支持240x280的屏幕
#hybrid=True,
width=240,
height=280,
start_x=0,
start_y=20,
double_buffer=1,
rot=0,
#invert=True,
#half_duplex=False,
#initialize=True
)
def set_value(indic, v):
meter.set_indicator_value(indic, v)
# 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')
#先定义界面元素
scr = lv.scr_act()
btn = lv.btn(scr)
btn1=lv.btn(scr)
btn2=lv.btn(scr)
label =lv.label(btn)
label1 =lv.label(btn1)
label2 =lv.label(btn2)
#btn.set_pos(10, 10) # Set its position
btn.set_size(120, 50) # Set its size
btn.align(lv.ALIGN.TOP_MID,0,20)
#btn1.set_pos(10, 80)
btn1.set_size(120, 50) # Set its size
btn1.align(lv.ALIGN.CENTER,0,0)
btn2.set_size(120, 50) # Set its size
btn2.align(lv.ALIGN.BOTTOM_MID,0,-20)
label.set_text("Enter") # Set the labels text
label.center()
label1.set_text("Cancel") # Set the labels text
label1.center()
label2.set_text("Err") # Set the labels text
label2.center()
def keypad_getkey() -> int:
return (p0.value())
def keypad_read(indev_drv,data) -> int:
k0=Pin(0, Pin.IN, Pin.PULL_UP)
if (k0.value() == 0):
data.state = 1 #key pressed
data.key = 9 #next obj
else:
data.state = 0 #key released
#可以看到lvgl会自动进入这个函数读取键盘的数值的【关键】
#程序貌似已经做了消抖，每10ms检测一次键盘作出响应
#data.state = lv.INDEV_STATE.PRESSED
#data.key = lv.KEY_ENTER[8]
def keypad_init():
Pin(0, Pin.IN, Pin.PULL_UP)
keypad_init()
indev_drv=lv.indev_drv_t()
indev_drv.init()
indev_drv.type=lv.INDEV_TYPE.KEYPAD
indev_drv.read_cb = keypad_read
indev=indev_drv.register()
print(indev_drv)
indev.enable(True)
print(indev)
g=lv.group_create()
print(g)
indev.set_group(g)
g.add_obj(btn2)
g.add_obj(btn)
g.add_obj(btn1)
g.focus_prev()#有反应
g.focus_next()
