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SSD1306Thread.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
-------------------------------------------------
File Name： SSD1306Thread
Description : 子线程，控制屏幕显示
Author : Slientsky
date： 2018-04-23
-------------------------------------------------
Change Activity:
2018-04-23
-------------------------------------------------
"""
import threading
import os
import sys
import time
import datetime
#轮子
from luma.core.interface.serial import i2c, spi
from luma.oled.device import ssd1306, ssd1325, ssd1331, sh1106
from luma.core.render import canvas
from PIL import ImageDraw, ImageFont
from basicdef import BasicDef
class tssd1306(threading.Thread):
def __init__(self, timesleep=1):
threading.Thread.__init__(self)
self.__flag = threading.Event() # 用于暂停线程的标识
self.__flag.set() # 设置为True
self.__running = threading.Event() # 用于停止线程的标识
self.__running.set() # 将running设置为True
#setDaemon(True)当主线程结束之后，会杀死子线程;如果加上join,并设置等待时间，就会等待线程一段时间再退出
self.setDaemon(True)
self.timesleep = timesleep
self.welcometimesleep = 5
#串口设备i2c ssd1306 128*64 OLED 显示器
self.serial = i2c(port=1, address=0x3C)
self.oled = ssd1306(self.serial)
self.count = 10
#字体
#font = ImageFont.load_default()
self.font_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
'fonts', 'C&C Red Alert [INET].ttf'))
self.font2 = ImageFont.truetype(self.font_path, 12)
#显示数据初始化
self.x = 0
self.y = 0
#控制屏幕显示：0为欢迎界面 1为系统信息 2为传感器信息 3为关闭python进程 4为重启 5为关机
self.display = 0
self.datem = ""
self.cpum = ""
self.memm = ""
self.ipadd = ""
self.netm = ""
self.welcomemessage = "Hi SlientSky"
self.thm = ''
self.co2 = ''
self.apm10 = ''
self.apm25 = ''
self.apm100 = ''
self.pm10 = ''
self.pm25 = ''
self.pm100 = ''
self.gt03um = ''
self.gt05um = ''
self.gt10um = ''
self.gt25um = ''
self.aqi1 = ''
self.aqi2 = ''
self.aqi3 = ''
def run(self):
try:
while self.__running.isSet():
self.__flag.wait()
self.stats()
time.sleep(self.timesleep)
except KeyboardInterrupt:
raise
def special_stats(self, x, y, message):
with canvas(self.oled) as draw:
if self.welcomemessage == "":
draw.text((x, y), message, fill="white")
def stats(self):
x = self.x
y = self.y
with canvas(self.oled) as draw:
if self.display == 0:
draw.text((30, 25), self.welcomemessage, fill="white")
time.sleep(self.welcometimesleep)
self.display = 1
elif self.display == 1:
draw.text((x, y), self.getDateTime(), fill="white")
draw.text((x, y+10), self.cpum, font=self.font2, fill="white")
draw.text((x, y+20), self.memm, font=self.font2, fill="white")
draw.text((x, y+30), self.ipadd, font=self.font2, fill="white")
draw.text((x, y+40), self.netm, font=self.font2, fill="white")
elif self.display == 2:
draw.text((x, y+5), self.thm, font=self.font2, fill="white")
draw.text((x, y+15), self.co2, font=self.font2, fill="white")
draw.text((x, y+25), " APM | PM | Gtum", fill="white")
draw.text((x, y+35), self.aqi1, font=self.font2, fill="white")
draw.text((x, y+45), self.aqi2, font=self.font2, fill="white")
draw.text((x, y+55), self.aqi3, font=self.font2, fill="white")
elif self.display == 3:
self.count -=1
message = "python will close: " + str(self.count)
draw.text((10, 25), message, font=self.font2, fill="white")
elif self.display == 4:
self.count -=1
message = "system will restart in: " + str(self.count)
draw.text((10, 25), message, font=self.font2, fill="white")
elif self.display == 5:
self.count -=1
message = "system will halt in: " + str(self.count)
draw.text((10, 25), message, font=self.font2, fill="white")
def set_display_1(self, x, y, cpum, memm, ipadd, netm):
self.x = x
self.y = y
self.cpum = "Cpu(s):%s Up:%s" \
% (str(cpum[0])+'%', str(cpum[1]).split('.')[0])
self.memm = "Mem: %s %.0f%% %s free" \
% (BasicDef.bytes2human(memm[0]), memm[1], BasicDef.bytes2human(memm[2]))
self.ipadd = "Wlan0: " + ipadd
self.netm = "Tx %s, Rx %s" % \
(BasicDef.bytes2human(netm[0]), BasicDef.bytes2human(netm[1]))
def set_display_2(self, x, y, T_H, co2, all_PMS):
self.x = x
self.y = y
T = str(T_H[0]) + u'°C'
H = str(T_H[1]) + '%'
self.thm = "T&H: %s | %s" % \
(T, H)
self.co2 = "CO2: %s ppm" % co2
if len(all_PMS) >= 12:
self.aqi1 = ' %s | %s | %s'%(str(all_PMS[0]), str(all_PMS[3]), str(all_PMS[6]))
self.aqi2 = ' %s | %s | %s'%(str(all_PMS[1]), str(all_PMS[4]), str(all_PMS[7]))
self.aqi3 = ' %s | %s | %s'%(str(all_PMS[2]), str(all_PMS[5]), str(all_PMS[8]))
# self.apm10 = 'apm1.0: %sug/m^3'%(str(apm10))
# self.apm25 = 'apm2.5: %sug/m^3'%(str(apm25))
# self.apm100 = 'apm10: %sug/m^3'%(str(apm100))
# self.pm10 = 'pm1.0: %sug/m^3'%(str(pm10))
# self.pm25 = 'pm2.5: %sug/m^3'%(str(pm25))
# self.pm100 = 'pm10: %sug/m^3'%(str(pm100))
# self.gt03um = 'gt0.3um: %s/0.1L^3'%(str(gt03um))
# self.gt05um = 'gt0.5um: %s/0.1L^3'%(str(gt05um))
# self.gt10um = 'gt1.0um: %s/0.1L^3'%(str(gt10um))
# self.gt25um = 'gt2.5um: %s/0.1L^3'%(str(gt25um))
# self.gt50um = 'gt5.0um: %s/0.1L^3'%(str(gt50um))
# self.gt100um = 'gt10um: %s/0.1L^3'%(str(gt100um))
#设置开屏信息
def set_welcomemessage(self, welcomemessage):
self.welcomemessage = welcomemessage
#屏幕子线程中直接读取时间信息显示
def getDateTime(self):
dt = datetime.datetime.now()
return dt.strftime( '%x %H:%M:%S %p' )
def pause(self):
self.__flag.clear() # 设置为False, 让线程阻塞
def resume(self):
self.__flag.set() # 设置为True, 让线程停止阻塞
def stop(self):
self.__flag.set() # 将线程从暂停状态恢复, 如何已经暂停的话
self.__running.clear() # 设置为False
self.oled.clear()
self.oled.cleanup()