USB = os.popen('lsusb')
A = USB.read()
if (A.find("lcd2usb") == -1):
print('NO device!')
exit()
else:
lcd = LCD()
#lcd_echo(lcd)
################---变量区---##############
briLD = 90 #亮度
conDBD = 164 #对比度
##########################################
########设置###########
lcd.set_brightness(briLD)
lcd.set_contrast(conDBD)
#######################
#lcd.clear()
exit_flag = 0
def Loading():
lcd.home()
lcd.clear()
lcd.goto(1, 0)
lcd.write('LCD status display')
sleep(0.5)
lcd.goto(3, 1)
lcd.write('raspberry pi')
sleep(0.5)
def main():
global lcd
global layout
global exit_flag
global errors
thread.start_new_thread(Key_Daemon, ())
RE_welcome = 0
errors = 0
lcd = LCD()
while (True):
try:
if errors == 0:
lcd = LCD()
#lcd_echo(lcd)
if (RE_welcome != 0): #re welcome
if (RE_welcome < 6):
RE_welcome = 0
if (RE_welcome > 5):
Loading()
RE_welcome = 0
if layout == 1:
main_layout() #主程序界面
sleep(0.3)
lcd.goto(19, 2)
lcd.write(' ')
elif layout == 2:
Network_layout()
sleep(0.9)
elif layout == 0:
reload_layout()
sleep(0.9)
except KeyboardInterrupt:
exit_flag = 1
sleep(1)
lcd.clear()
lcd.goto(0, 1)
lcd.write("Program End =w=")
lcd.goto(0, 2)
lcd.write(datetime.now().strftime('%m/%d %w %p %l:%M:%S'))
lcd.set_brightness(10)
lcd.close()
print('\nProgram End =w=')
break
except:
errors = 1
sleep(5)
while errors != 0:
USB = os.popen('lsusb')
A = USB.read()
#print A
if (A.find("lcd2usb") == -1):
print('NO device!')
errors = 1
else:
print('ok')
errors = 0
lx = 0
else:
lx = lx + 20 #否则 加20亮度 避免太暗
if lx >= 256: #亮度最高255 避免错误数值
lx = 255
if lx != lx_old: #减少调用次数
lcd.set_brightness(lx)
lx_old = lx
if briLD == -1: #判断是否自动
thread.start_new_thread(auto_brightness, ()) #启动自动线程
else:
lcd.set_brightness(briLD) #手动
lcd.set_contrast(conDBD)
def Loading():
lcd.home()
lcd.clear()
lcd.goto(1, 0)
lcd.write('LCD status display')
sleep(0.5)
lcd.goto(3, 1)
lcd.write('raspberry pi')
sleep(0.5)
lcd.goto(4, 2)
lcd.write('=Moeyuuko=')
sleep(0.5)
