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_P023_OLED.py
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_P023_OLED.py
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#!/usr/bin/env python3
#############################################################################
########################## OLED plugin for RPIEasy ##########################
#############################################################################
#
# Available commands:
# OLEDCMD,<value> - value can be: on, off, clear, low, med, high
# OLEDCMD,clearline,<row> - clears selected <row>
# OLED,<row>,<col>,<text> - write text message to OLED screen at the requested position
#
# Copyright (C) 2018-2019 by Alexander Nagy - https://bitekmindenhol.blog.hu/
#
# Made with the support of Budman1758
#
import plugin
import webserver
import rpieGlobals
import rpieTime
import misc
import gpios
import commands
from luma.core.interface.serial import i2c
from luma.core.render import canvas
from PIL import ImageFont, ImageDraw, Image
class Plugin(plugin.PluginProto):
PLUGIN_ID = 23
PLUGIN_NAME = "Display - Simple OLED"
PLUGIN_VALUENAME1 = "OLED"
P23_Nlines = 8
def __init__(self,taskindex): # general init
plugin.PluginProto.__init__(self,taskindex)
self.dtype = rpieGlobals.DEVICE_TYPE_I2C
self.vtype = rpieGlobals.SENSOR_TYPE_NONE
self.ports = 0
self.valuecount = 0
self.senddataoption = False
self.timeroption = True
self.timeroptional = True
self.formulaoption = False
self.device = None
self.width = None
self.height = None
self.lines = []
self.ufont = None
self.lineheight = 11
self.charwidth = 8
self.dispimage = None
def plugin_init(self,enableplugin=None):
plugin.PluginProto.plugin_init(self,enableplugin)
if self.enabled:
i2cport = -1
try:
for i in range(0,2):
if gpios.HWPorts.is_i2c_usable(i) and gpios.HWPorts.is_i2c_enabled(i):
i2cport = i
break
except:
i2cport = -1
if i2cport>-1:
if self.interval>2:
nextr = self.interval-2
else:
nextr = self.interval
self.initialized = False
serialdev = None
self.taskdevicepluginconfig[1] = int(float(self.taskdevicepluginconfig[1]))
if self.taskdevicepluginconfig[1] != 0: # i2c address
serialdev = i2c(port=i2cport, address=self.taskdevicepluginconfig[1])
else:
return self.initialized
self.device = None
try:
if "x" in str(self.taskdevicepluginconfig[3]):
resstr = str(self.taskdevicepluginconfig[3]).split('x')
self.width = int(resstr[0])
self.height = int(resstr[1])
else:
self.width = None
self.height = None
except:
self.width = None
self.height = None
if str(self.taskdevicepluginconfig[0]) != "0" and str(self.taskdevicepluginconfig[0]).strip() != "": # display type
try:
if str(self.taskdevicepluginconfig[0])=="ssd1306":
from luma.oled.device import ssd1306
if self.height is None:
self.device = ssd1306(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1306(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="sh1106":
from luma.oled.device import sh1106
if self.height is None:
self.device = sh1106(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = sh1106(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1309":
from luma.oled.device import ssd1309
if self.height is None:
self.device = ssd1309(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1309(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1331":
from luma.oled.device import ssd1331
if self.height is None:
self.device = ssd1331(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1331(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1351":
from luma.oled.device import ssd1351
if self.height is None:
self.device = ssd1351(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1351(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1322":
from luma.oled.device import ssd1322
if self.height is None:
self.device = ssd1322(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1322(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1325":
from luma.oled.device import ssd1325
if self.height is None:
self.device = ssd1325(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1325(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
elif str(self.taskdevicepluginconfig[0])=="ssd1327":
from luma.oled.device import ssd1327
if self.height is None:
self.device = ssd1327(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])))
else:
self.device = ssd1327(serialdev, rotate=int(float(self.taskdevicepluginconfig[2])), width=self.width, height=self.height)
self.initialized = True
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"OLED can not be initialized! "+str(e))
self.enabled = False
self.device = None
return False
if self.device is not None:
try:
lc = int(self.taskdevicepluginconfig[4])
except:
lc = self.P23_Nlines
if lc < 1:
lc = self.P23_Nlines
lineheight = int(self.device.height / lc)+1
self.ufont=ImageFont.truetype('img/UbuntuMono-R.ttf', lineheight)
try:
self.device.show()
except:
pass
with canvas(self.device) as draw:
maxcols = int(self.taskdevicepluginconfig[5])
if maxcols < 1:
maxcols = 1
tstr = "X"*maxcols
try:
sw = draw.textsize(tstr,self.ufont)[0]
except:
sw = self.device.width
while (sw>self.device.width):
lineheight-=1
self.ufont=ImageFont.truetype('img/UbuntuMono-R.ttf', lineheight)
sw = draw.textsize(tstr,self.ufont)[0]
self.charwidth, self.lineheight = draw.textsize("X",self.ufont)
if lc in [2,4,6,8]:
self.lineheight += 1
if self.interval>2:
nextr = self.interval-2
else:
nextr = 0
self._lastdataservetime = rpieTime.millis()-(nextr*1000)
self.dispimage = Image.new('1', (self.device.width,self.device.height), "black")
else:
self.initialized = False
def webform_load(self): # create html page for settings
choice1 = str(self.taskdevicepluginconfig[0]) # store display type
import luma.oled.device
options = luma.oled.device.__all__
webserver.addHtml("<tr><td>Display type:<td>")
webserver.addSelector_Head("p023_type",True)
for d in range(len(options)):
webserver.addSelector_Item(options[d],options[d],(choice1==options[d]),False)
webserver.addSelector_Foot()
choice2 = int(float(self.taskdevicepluginconfig[1])) # store i2c address
options = ["0x3c","0x3d"]
optionvalues = [0x3c,0x3d]
webserver.addFormSelector("Address","p023_adr",len(options),options,optionvalues,None,choice2)
webserver.addFormNote("Enable <a href='pinout'>I2C bus</a> first, than <a href='i2cscanner'>search for the used address</a>!")
choice3 = int(float(self.taskdevicepluginconfig[2])) # store rotation state
options = ["Normal","Rotate by 90","Rotate by 180","Rotate by 270"]
optionvalues = [0,1,2,3]
webserver.addFormSelector("Mode","p023_rotate",len(optionvalues),options,optionvalues,None,choice3)
options = ["Default","128x64","128x128","128x32","96x96","96x64","64x48","64x32"]
choice4 = self.taskdevicepluginconfig[3] # store resolution
webserver.addHtml("<tr><td>Resolution:<td>")
webserver.addSelector_Head("p023_res",False)
for d in range(len(options)):
webserver.addSelector_Item(options[d],options[d],(choice4==options[d]),False)
webserver.addSelector_Foot()
choice5 = int(float(self.taskdevicepluginconfig[4])) # store line count
webserver.addHtml("<tr><td>Number of lines:<td>")
webserver.addSelector_Head("p023_linecount",False)
for l in range(1,self.P23_Nlines+1):
webserver.addSelector_Item(str(l),l,(l==choice5),False)
webserver.addSelector_Foot()
webserver.addFormNumericBox("Try to display # characters per row","p023_charperl",self.taskdevicepluginconfig[5],1,32)
webserver.addFormNote("Leave it '1' if you do not care")
webserver.addFormCheckBox("Clear only used lines","p023_partialclear",self.taskdevicepluginconfig[6])
if choice5 > 0 and choice5<9:
lc = choice5
else:
lc = self.P23_Nlines
for l in range(lc):
try:
linestr = self.lines[l]
except:
linestr = ""
webserver.addFormTextBox("Line"+str(l+1),"p023_template"+str(l),linestr,128)
return True
def __del__(self):
try:
if self.device is not None:
self.device.clear()
self.device.hide()
except:
pass
def plugin_exit(self):
self.__del__()
def webform_save(self,params): # process settings post reply
par = webserver.arg("p023_type",params)
if par == "":
par = 0
self.taskdevicepluginconfig[0] = str(par)
par = webserver.arg("p023_adr",params)
if par == "":
par = 0
self.taskdevicepluginconfig[1] = int(par)
par = webserver.arg("p023_rotate",params)
if par == "":
par = 0
self.taskdevicepluginconfig[2] = int(par)
par = webserver.arg("p023_res",params)
self.taskdevicepluginconfig[3] = str(par)
par = webserver.arg("p023_linecount",params)
if par == "":
par = 8
self.taskdevicepluginconfig[4] = int(par)
par = webserver.arg("p023_charperl",params)
if par == "":
par = 1
self.taskdevicepluginconfig[5] = int(par)
if (webserver.arg("p023_partialclear",params)=="on"):
self.taskdevicepluginconfig[6] = True
else:
self.taskdevicepluginconfig[6] = False
for l in range(self.P23_Nlines):
linestr = webserver.arg("p023_template"+str(l),params).strip()
# if linestr!="" and linestr!="0":
try:
self.lines[l]=linestr
except:
self.lines.append(linestr)
self.plugin_init()
return True
def plugin_read(self): # deal with data processing at specified time interval
if self.initialized and self.enabled and self.device:
try:
if self.taskdevicepluginconfig[6] == False:
self.dispimage = Image.new('1', (self.device.width,self.device.height), "black")
if self.dispimage:
draw = ImageDraw.Draw(self.dispimage)
for l in range(int(self.taskdevicepluginconfig[4])):
resstr = ""
try:
linestr=str(self.lines[l])
resstr=self.oledparse(linestr)
except:
resstr=""
if resstr != "":
y = (l*self.lineheight)
if self.taskdevicepluginconfig[6]:
draw.rectangle( ((0,y+2), (self.device.width,y+self.lineheight)), fill="black")
draw.text( (0,y), resstr, fill="white", font=self.ufont)
self.device.display(self.dispimage)
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"OLED write error! "+str(e))
self._lastdataservetime = rpieTime.millis()
return True
def plugin_write(self,cmd):
res = False
cmdarr = cmd.split(",")
cmdarr[0] = cmdarr[0].strip().lower()
if cmdarr[0] == "oledcmd":
try:
cmd = cmdarr[1].strip()
except:
cmd = ""
try:
if self.device is not None:
if cmd == "on":
self.device.show()
res = True
elif cmd == "off":
self.device.hide()
res = True
elif cmd == "clear":
self.device.clear()
self.dispimage = Image.new('1', (self.device.width,self.device.height), "black")
res = True
elif cmd == "clearline":
try:
l = int(cmdarr[2].strip())
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"Parameter error: "+str(e))
return False
if self.device is not None and self.dispimage is not None:
if l>0:
l-=1
draw = ImageDraw.Draw(self.dispimage)
y = (l*self.lineheight)
draw.rectangle( ((0,y+2), (self.device.width,y+self.lineheight)), fill="black")
self.device.display(self.dispimage)
res = True
if cmd == "low":
self.device.contrast(64)
res = True
if cmd == "med":
self.device.contrast(0xcf)
res = True
if cmd == "high":
self.device.contrast(0xff)
res = True
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"OLED command error! "+str(e))
res = False
elif cmdarr[0] == "oled":
sepp = len(cmdarr[0])+len(cmdarr[1])+len(cmdarr[2])+1
sepp = cmd.find(',',sepp)
try:
y = int(cmdarr[1].strip())
x = int(cmdarr[2].strip())
text = cmd[sepp+1:]
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"Parameter error: "+str(e))
return False
if x>0:
x -= 1
if y>0:
y -= 1
try:
if self.device is not None:
draw = ImageDraw.Draw(self.dispimage)
resstr = self.oledparse(text)
draw.text( ((x*self.charwidth),(y*self.lineheight)), resstr, fill="white", font=self.ufont)
self.device.display(self.dispimage)
res = True
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"OLED command error! "+str(e))
res = False
return res
def oledparse(self,ostr):
cl, st = commands.parseruleline(ostr)
if st=="CMD":
resstr=str(cl)
else:
resstr=str(ostr)
if "{" in resstr or "&" in resstr:
resstr = resstr.replace("{D}","˚").replace("°","˚")
resstr = resstr.replace("{<<}","«").replace("«","«")
resstr = resstr.replace("{>>} ","»").replace("»","»")
resstr = resstr.replace("{u} ","µ").replace("µ ","µ")
resstr = resstr.replace("{E}","€").replace("€","€")
resstr = resstr.replace("{Y}","¥").replace("¥","¥")
resstr = resstr.replace("{P}","£").replace("£","£")
resstr = resstr.replace("{c}","¢").replace("¢","¢")
resstr = resstr.replace("{^1}","¹").replace("¹","¹")
resstr = resstr.replace("{^2}","²").replace("²","²")
resstr = resstr.replace("{^3}","³").replace("³","³")
resstr = resstr.replace("{1_4}","¼").replace("¼","¼")
resstr = resstr.replace("{1_2}","½").replace("&frac24;","½")
resstr = resstr.replace("{3_4}","¾").replace("¾","¾")
resstr = resstr.replace("{+-}","±").replace("±","±")
resstr = resstr.replace("{x}","×").replace("×","×")
resstr = resstr.replace("{..}","÷").replace("÷","÷")
return resstr