orange pi串口屏-老鄢博客

orange pi串口屏

发布时间：2016-12-09 11:37:47 作者：admin 阅读：693次

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#!/usr/bin/python
# coding=utf-8

#本程序需要python安装pyserial扩展
#python2.x 请执行 :
# apt-get install python-pip
# pip install pyserial

#python3.x 请执行 :
# apt-get install python3-pip
# pip3 install pyserial

#调用方法
# python screen.py
# 或
# python3 screen.py

#程序可接受一下参数:
#参数 -n 设备名称,作显示用 ,默认为 OrangePi
#参数 -p 串口路径 ,默认为 /dev/ttyS1
#参数 -s 串口速率 ,默认为 115200
#参数 -e 网卡名称 ,默认为 eth0
#参数 -r 信息刷新频率,单位:秒 ,默认为 1
#参数 -w 屏幕宽度 ,默认为 220
#参数 -h 屏幕高度 ,默认为 176
#参数 -d 屏幕方向 ,0,1,2,3 代表不同方向
#参数 -b 屏幕亮度 ,0~100 越大越亮

#例如: python screen.py -n "OrangePi PC2" -e eth0 -s 115200 -p /dev/ttyS1 -r 1 -w 240 -h 320 -d 3 -b 80

#如果希望程序在后台执行,可在命令最后加 &
#例如: python screen.py &

#如需系统启动时自动执行,可根据需要将命令和参数加入/etc/rc.local中
# python /your_path/screen.py -n "OrangePi" -e eth0 -s 115200 -p /dev/ttyS1 &

import os,sys, getopt
import time
import datetime
import serial

deviceName="OrangePi"

tty="/dev/ttyS1"
#tty = "/dev/tty.usbserial"
speed=115200

ethName="eth0"

sleepStep=1

sWidth=220
sHeight=176

sDirect=0
sBright=50

opts, args = getopt.getopt(sys.argv[1:], "p:s:e:n:r:w:h:d:b:")

try:
for op, value in opts:
if op == "-p":
tty = value
elif op == "-s":
speed = int(value)
elif op == "-e":
ethName = value
elif op == "-n":
deviceName = value
elif op == "-r":
sleepStep = int(value)
elif op == "-w":
sWidth = int(value)
elif op == "-h":
sHeight = int(value)
elif op == "-d":
sDirect = int(value)
elif op == "-b":
sBright = int(value)
except:
speed=speed
sleepStep=sleepStep

#print(deviceName,tty,speed,ethName)

def connectSerial(t, s):
return serial.Serial(t, s)

def sendMessage(port,prog):
n = port.write((prog+"\r\n").encode("gbk"))
#print(port.portstr)
#print(n)

def getSysDatetime():
return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")

def getSysDate():
return datetime.datetime.now().strftime("%Y-%m-%d")

def getSystime():
return datetime.datetime.now().strftime("%H,%M,%S")

def getLocalIp(ifname = 'eth0'):
shellStr = "/sbin/ifconfig "+ifname+" |sed -n '/inet addr/s/^[^:]*:\$[0-9.]\\{7,15\}\$ .*/\\1/p'"
output = os.popen(shellStr)
ip=output.readline().strip()
return ip

def getTrans(ifname = 'eth0'):
shellStrSend = "/sbin/ifconfig "+ifname+" | grep bytes | awk '{print $6}' | awk -F : '{print $2}'"
shellStrRecv = "/sbin/ifconfig " + ifname + " | grep bytes | awk '{print $2}' | awk -F : '{print $2}'"
outputSend = os.popen(shellStrSend)
outputRecv = os.popen(shellStrRecv)
return (outputSend.readline().strip(),outputRecv.readline().strip())

def getCpuUse():
shellStr = "/usr/bin/top -n 1 -b |grep Cpu | cut -d \",\" -f 1 | cut -d \":\" -f 2 |cut -d \"u\" -f 1"
output = os.popen(shellStr)
cpu=output.readline().strip()
#print(cpu)
return cpu

def cpuTem():
shellStr = "cat /sys/class/thermal/thermal_zone0/temp"
ret = os.popen(shellStr)
temp=ret.readline().strip()
return temp

def getMem():
shellStrTotal = "echo `free -m | grep Mem | awk '{print $2}'`"
shellStrUsed = "echo `free -m | grep Mem | awk '{print $3}'`"
outputTotal = os.popen(shellStrTotal)
outputUsed = os.popen(shellStrUsed)
return (outputTotal.readline().strip(), outputUsed.readline().strip())

def initScreen(t):
prog = "DR"+str(sDirect)+";SEBL("+str(sBright)+");"
prog += "CLS(0);"
prog += "BOX(0,0,"+str(sWidth-1)+","+str(sHeight-1)+",15);" \
"BOX(1,1,"+str(sHeight-2)+","+str(sHeight-2)+",0);" \
"BOXF(2,2,"+str(sWidth-3)+",25,3);PL(2,26,"+str(sWidth-3)+",26,0);"
prog += "SHTM(16,"+str(sWidth-70)+","+str(sHeight-20)+",1,0);STIM("+getSystime()+");"
sendMessage(t, prog)

def createMessage(t):
prog = "SBC(3);LABL(16,2,4,"+str(sWidth-3)+",'"+deviceName+u" 状态',4,1);"
prog += u"SBC(0);LABL(16,4,30,"+str(sWidth-3)+u",'CPU占用率: "+getCpuUse()+" %',4,0);"
prog += u"SBC(0);LABL(16,4,50,"+str(sWidth-3)+u",'CPU温度 : "+cpuTem()+u"℃',4,0);"
prog += "SBC(0);LABL(16,4,70,"+str(sWidth-3)+",'"+ethName+" IP : "+getLocalIp(ethName)+"',4,0);"
trans=getTrans(ethName)
prog += u"SBC(0);LABL(16,4,90,"+str(sWidth-3)+u",' 发送 : "+trans[0]+"',4,0);"
prog += u"SBC(0);LABL(16,4,110,"+str(sWidth-3)+u",' 接收 : " + trans[1] + "',4,0);"
mem=getMem()
prog += u"SBC(0);LABL(16,4,130,"+str(sWidth-3)+u",'内存 : "+mem[1]+" / "+mem[0]+" M ',4,0);"
prog += "SBC(0);LABL(16,4," + str(sHeight - 20) + ",90,'" + getSysDate() + "',1,2);STIM("+getSystime()+");"
#prog += "SBC(0);LABL(16,4,"+str(sHeight-20)+","+str(sWidth-3)+",'"+getSysDatetime()+"',1,2);"
sendMessage(t, prog)

p=connectSerial(tty,speed)
initScreen(p)

while (1):
createMessage(p)
time.sleep(sleepStep)