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_P205_EPD.py
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_P205_EPD.py
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#!/usr/bin/env python3
#############################################################################
########################## EPD plugin for RPIEasy ###########################
#############################################################################
#
# Available commands:
# EPDCMD,<value> - value can be: on, off, clear, low, med, high
# EPDCMD,clearline,<row> - clears selected <row>
# EPDTEXT,<row>,<col>,<text> - write text message to OLED screen at the requested position
#
# Used library and supported models:
# https://pypi.org/project/epd-library/
#
# Copyright (C) 2019 by Alexander Nagy - https://bitekmindenhol.blog.hu/
#
import plugin
import webserver
import rpieGlobals
import rpieTime
import misc
import gpios
import commands
from PIL import ImageFont, ImageDraw, Image
import threading
class Plugin(plugin.PluginProto):
PLUGIN_ID = 205
PLUGIN_NAME = "Display - EPD E-paper (EXPERIMENTAL)"
PLUGIN_VALUENAME1 = "EPD"
P205_Nlines = 8
def __init__(self,taskindex): # general init
plugin.PluginProto.__init__(self,taskindex)
self.dtype = rpieGlobals.DEVICE_TYPE_SPI
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.epdbase = None
self.device = None
self.width = None
self.height = None
self.lines = []
self.ufont = None
self.lineheight = 11
self.charwidth = 8
self.dispimage = None
self.redframe = None
self.partialupdate = False
self.setframe = False
self.initprogress = False
self.readinprogress = False
def plugin_init(self,enableplugin=None):
plugin.PluginProto.plugin_init(self,enableplugin)
if self.enabled or enableplugin:
try:
if self.initprogress==True:
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"EPD init already in progress!")
return False
except:
pass
self.initprogress = True
self.initialized = False
# self.device = None
# self.epdbase = None
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Start EPD background init")
bgt = threading.Thread(target=self.display_init)
bgt.daemon = False
bgt.start()
else:
self.initialized = False
self.initprogress = False
def display_init(self):
# try:
# if self.device is not None:
# self.device.digital_read(self.device.busy_pin)
# self.initialized = True
# misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"EPD already initialized")
# except:
# self.initialized = False
self.readinprogress = False
minrefresh = 2
if str(self.taskdevicepluginconfig[0]) != "0" and str(self.taskdevicepluginconfig[0]).strip() != "": # display type
try:
if str(self.taskdevicepluginconfig[0])=="154":
import epd1in54
self.epdbase = epd1in54
self.redframe = None
minrefresh = 2
elif str(self.taskdevicepluginconfig[0])=="154b":
import epd1in54b
self.epdbase = epd1in54b
self.redframe = True
minrefresh = 8
elif str(self.taskdevicepluginconfig[0])=="154c":
import epd1in54c
self.epdbase = epd1in54c
self.redframe = True
minrefresh = 27
elif str(self.taskdevicepluginconfig[0])=="213":
import epd2in13
self.epdbase = epd2in13
self.redframe = None
minrefresh = 2
elif str(self.taskdevicepluginconfig[0])=="213b":
import epd2in13b
self.epdbase = epd2in13b
self.redframe = True
minrefresh = 15
elif str(self.taskdevicepluginconfig[0])=="270":
import epd2in7
self.epdbase = epd2in7
self.redframe = None
minrefresh = 6
elif str(self.taskdevicepluginconfig[0])=="270b":
import epd2in7b
self.epdbase = epd2in7b
self.redframe = True
minrefresh = 15
elif str(self.taskdevicepluginconfig[0])=="290":
import epd2in9
self.epdbase = epd2in9
self.redframe = None
minrefresh = 2
elif str(self.taskdevicepluginconfig[0])=="290b":
import epd2in9b
self.epdbase = epd2in9b
self.redframe = True
minrefresh = 15
elif str(self.taskdevicepluginconfig[0])=="420":
import epd4in2
self.epdbase = epd4in2
self.redframe = None
minrefresh = 4
elif str(self.taskdevicepluginconfig[0])=="420b":
import epd4in2b
self.epdbase = epd4in2b
self.redframe = True
minrefresh = 15
elif str(self.taskdevicepluginconfig[0])=="750":
import epd7in5
self.epdbase = epd7in5
self.redframe = None
minrefresh = 5
elif str(self.taskdevicepluginconfig[0])=="750b":
import epd7in5b
self.epdbase = epd7in5b
self.redframe = True
minrefresh = 16
elif str(self.taskdevicepluginconfig[0])=="970":
import epd9in7
self.epdbase = epd9in7
self.redframe = None
minrefresh = 16
else:
self.epdbase = None
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD type unknown! "+str(e))
self.enabled = False
self.device = None
self.initialized = False
self.epdbase = None
self.initprogress = False
return False
if self.epdbase is not None:
try:
# if self.initialized==False:
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Start EPD init")
self.device = self.epdbase.EPD()
self.width = self.epdbase.EPD_WIDTH
self.height = self.epdbase.EPD_HEIGHT
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"EPD device preinit")
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD can not be initialized! "+str(e))
self.enabled = False
self.device = None
self.initialized = False
self.initprogress = False
return False
try:
if self.device.lut_partial_update:
pass
self.partialupdate = True
except:
self.partialupdate = False
try:
lc = int(self.taskdevicepluginconfig[4])
except:
lc = self.P205_Nlines
if lc < 1:
lc = self.P205_Nlines
try:
lineheight = int(self.height / lc) # lineheight = int(self.device.height / lc)+1
except:
lineheight = 8
self.ufont=ImageFont.truetype('img/UbuntuMono-R.ttf', lineheight)
try:
#self.device.init(self.device.lut_full_update)
# if self.redframe is None:
if self.partialupdate:
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"EPD Partial update supported")
self.device.init(self.device.lut_partial_update)
else:
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"EPD Partial update NOT supported, set large intervals!")
self.device.init()
self.dispimage = Image.new('1', (self.width,self.height), 255)
try:
self.device.set_frame_memory(self.dispimage,0,0)
self.setframe = True
except:
self.setframe = False
if self.redframe is not None:
self.redframe = self.dispimage
draw = ImageDraw.Draw(self.dispimage)
# self.device.clear_frame_memory(0xFF) # float object error?
if self.redframe is None and self.setframe:
self.device.set_frame_memory(self.dispimage,0,0)
if self.redframe is not None:
framered = [0] * int(self.device.width * self.device.height / 8)
self.device.display_frame(self.device.get_frame_buffer(self.dispimage),framered)
else:
if self.setframe:
self.device.display_frame()
else:
self.device.display_frame(self.device.get_frame_buffer(self.dispimage))
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD init error: "+str(e))
self.initialized = False
self.initprogress = False
return False
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"EPD background drawed")
if draw:
maxcols = int(self.taskdevicepluginconfig[5])
if maxcols < 1:
maxcols = 1
tstr = "X"*maxcols
# try:
# if int(self.taskdevicepluginconfig[2]) in [1,3]: # width correction for initial char size detection
# tv = self.width
# self.width = self.height
# self.height = tv
# self.dispimage = Image.new('1', (self.width,self.height), 255)
# draw = ImageDraw.Draw(self.dispimage)
# except:
# pass
try:
sw = draw.textsize(tstr,self.ufont)[0]
except:
sw = self.width
while (sw>self.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
# try:
# if int(self.taskdevicepluginconfig[2]) in [1,3]: # reverse width correction for initial char size detection
# tv = self.width
# self.width = self.height
# self.height = tv
# self.dispimage = Image.new('1', (self.width,self.height), 255)
# except:
# pass
if self.interval>0:
if self.partialupdate==False:
if self.interval<minrefresh:
self.interval = minrefresh
if self.interval>2:
nextr = self.interval-2
else:
nextr = 0
self._lastdataservetime = rpieTime.millis()-(nextr*1000)
self.initialized = True
misc.addLog(rpieGlobals.LOG_LEVEL_INFO,"EPD device ready")
if self.interval != 0:
misc.addLog(rpieGlobals.LOG_LEVEL_DEBUG,"Starting first EPD data display")
self.plugin_read()
else:
self.initialized = False
self.initprogress = False
def webform_load(self): # create html page for settings
webserver.addFormNote("SPI selector unused as library do not support changing wiring, it is hardcoded!")
choice1 = str(self.taskdevicepluginconfig[0]) # store display type
options = ['1.54" (200x200)','1.54"B (200x200)','1.54"C (150x150)','2.13" (250x122)','2.13"B (212x104)','2.7" (264x176)','2.7"B (264x176)','2.9" (296x128)','2.9"B (296x128)','4.2" (400x300)','4.2"B (400x300)','7.5" (800x480)','7.5"B (800x480)','9.7" (1200x825)']
optionvalues = ["154","154b","154c","213","213b","270","270b","290","290b","420","420b","750","750b","970"]
webserver.addHtml("<tr><td>Display type:<td>")
webserver.addSelector_Head("p205_type",False)
for d in range(len(options)):
webserver.addSelector_Item(options[d],optionvalues[d],(str(choice1)==str(optionvalues[d])),False)
webserver.addSelector_Foot()
webserver.addFormNote("Enable <a href='pinout'>SPI-0</a> first!")
webserver.addFormNote("Hardware connection (OLED => Raspberry Pi)<br>VCC->3.3V, GND->GND, SDI->MOSI, SCLK->SCLK, CS-> GPIO8/CE0, D/C->GPIO25 (out), RES->GPIO17 (out), BUSY->GPIO24 (in)")
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","p205_rotate",len(optionvalues),options,optionvalues,None,choice3)
choice5 = int(float(self.taskdevicepluginconfig[4])) # store line count
webserver.addHtml("<tr><td>Number of lines:<td>")
webserver.addSelector_Head("p205_linecount",False)
for l in range(1,self.P205_Nlines+1):
webserver.addSelector_Item(str(l),l,(l==choice5),False)
webserver.addSelector_Foot()
webserver.addFormNumericBox("Try to display # characters per row","p205_charperl",self.taskdevicepluginconfig[5],1,32)
webserver.addFormNote("Leave it '1' if you do not care")
webserver.addFormCheckBox("Clear only used lines","p205_partialclear",self.taskdevicepluginconfig[6])
if choice5 > 0 and choice5<9:
lc = choice5
else:
lc = self.P205_Nlines
for l in range(lc):
try:
linestr = self.lines[l]
except:
linestr = ""
webserver.addFormTextBox("Line"+str(l+1),"p205_template"+str(l),linestr,128)
return True
def plugin_exit(self):
self.initialized = False
self.initprogress = False
def webform_save(self,params): # process settings post reply
par = webserver.arg("p205_type",params)
self.taskdevicepluginconfig[0] = str(par)
par = webserver.arg("p205_rotate",params)
if par == "":
par = 0
self.taskdevicepluginconfig[2] = int(par)
par = webserver.arg("p205_linecount",params)
if par == "":
par = 8
self.taskdevicepluginconfig[4] = int(par)
par = webserver.arg("p205_charperl",params)
if par == "":
par = 1
self.taskdevicepluginconfig[5] = int(par)
if (webserver.arg("p205_partialclear",params)=="on"):
self.taskdevicepluginconfig[6] = True
else:
self.taskdevicepluginconfig[6] = False
for l in range(self.P205_Nlines):
linestr = webserver.arg("p205_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 is not None:
if self.readinprogress == False:
self.readinprogress = True
try:
if self.taskdevicepluginconfig[6] == False:
self.dispimage = Image.new('1', (self.width,self.height), 255)
if self.dispimage:
pf = False
draw = ImageDraw.Draw(self.dispimage)
for l in range(int(self.taskdevicepluginconfig[4])):
resstr = ""
try:
linestr=str(self.lines[l])
resstr=self.epdparse(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=255)
draw.text( (0,y), resstr, font=self.ufont, fill=0)
pf = True
if pf:
self.dodisplay()
except Exception as e:
if self.initialized:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD write error! "+str(e))
self._lastdataservetime = rpieTime.millis()
self.readinprogress = False
return True
def dodisplay(self):
if self.initialized and self.device is not None:
try:
if self.taskdevicepluginconfig[2] == 0:
dimage = self.dispimage
elif self.taskdevicepluginconfig[2] == 1:
dimage = self.dispimage.rotate(90,expand=True, fillcolor=0)
elif self.taskdevicepluginconfig[2] == 2:
dimage = self.dispimage.rotate(180,expand=True, fillcolor=0)
elif self.taskdevicepluginconfig[2] == 3:
dimage = self.dispimage.rotate(270,expand=True, fillcolor=0)
else:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"Invalid rotation!")
return False
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"PIL rotate error! "+str(e))
try:
w, h = dimage.size
if w != self.width or h != self.height:
dimage = dimage.resize((self.width,self.height), Image.LANCZOS)
if self.redframe is None and self.setframe:
self.device.set_frame_memory(dimage,0,0)
if self.redframe is not None:
self.device.display_frame(self.device.get_frame_buffer(dimage),None)
else:
if self.setframe:
self.device.display_frame()
else:
self.device.display_frame(self.device.get_frame_buffer(dimage))
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD display error! "+str(e))
def plugin_write(self,cmd):
res = False
cmdarr = cmd.split(",")
cmdarr[0] = cmdarr[0].strip().lower()
if cmdarr[0][:3] != "epd" or self.initialized==False:
return False
if cmdarr[0] == "epdcmd":
try:
cmd = cmdarr[1].strip()
except:
cmd = ""
try:
if self.device is not None:
if cmd == "clear":
# self.device.init(self.device.lut_full_update)
self.dispimage = Image.new('1', (self.width,self.height), 255)
if self.redframe is None and self.setframe:
self.device.set_frame_memory(self.dispimage,0,0)
if self.redframe is not None:
self.device.display_frame(self.device.get_frame_buffer(self.dispimage),None)
else:
if self.setframe:
self.device.display_frame()
else:
self.device.display_frame(self.device.get_frame_buffer(self.dispimage))
if self.partialupdate:
self.device.init(self.device.lut_partial_update)
else:
self.device.init()
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=255)
self.dodisplay()
res = True
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"EPD command error! "+str(e))
res = False
elif cmdarr[0] == "epdline":
try:
x1 = int(cmdarr[1].strip())
y1 = int(cmdarr[2].strip())
x2 = int(cmdarr[3].strip())
y2 = int(cmdarr[4].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:
draw = ImageDraw.Draw(self.dispimage)
draw.line( ((x1,y1), (x2,y2)), fill=0)
self.dodisplay()
res = True
elif cmdarr[0] == "epdrect":
try:
x1 = int(cmdarr[1].strip())
y1 = int(cmdarr[2].strip())
x2 = int(cmdarr[3].strip())
y2 = int(cmdarr[4].strip())
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"Parameter error: "+str(e))
return False
fillcolor = 0
try:
fillcolor = int(cmdarr[5])
except:
pass
if self.device is not None and self.dispimage is not None:
draw = ImageDraw.Draw(self.dispimage)
draw.rectangle( ((x1,y1), (x2,y2)), fill=fillcolor)
self.dodisplay()
res = True
elif cmdarr[0] == "epdimg":
try:
x1 = int(cmdarr[1].strip())
y1 = int(cmdarr[2].strip())
fname = cmdarr[3].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:
try:
img = Image.open(fname,'r') # no path check!
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"Filename error: "+str(e))
return False
self.dispimage.paste(img,(x1,y1))
self.dodisplay()
res = True
elif cmdarr[0] == "epdtext":
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.epdparse(text)
draw.text( ((x*self.charwidth),(y*self.lineheight)), resstr, fill=0, font=self.ufont)
self.dodisplay()
res = True
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"OLED command error! "+str(e))
res = False
return res
def epdparse(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