the public repo for the e-paper bulletin board. It's a bulletin board that syncs over scuttlebutt :)
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#!/usr/bin/python
# -*- coding:utf-8 -*-
# This is the main program of the EBB: E-Paper Bulletin Board. More info at https://git.laboratoryb.org/trav/ebb
#
# carousel iterates through all posts in posts.json
import epd4in2
import traceback
import time
import signal
import uuid
import subprocess
import buttonshim
import addtoDB
import refreshdb
import ConfigParser
from tinydb import TinyDB, Query
from PIL import Image,ImageDraw,ImageFont
## INITIALIZE ##
#Let the user know we're booting: with a PURPLE led
buttonshim.set_pixel(0xFF, 0x00, 0xFF)
#intervalTime is how many seconds before moving to next image (300 = 5 minutes)
#sync time is how many seconds before refreshing the DB from SSB
#this should be moved into the config file...
intervalTime = 1800
syncTime = 3600
#keep track of where we are moving through intervalTime, syncTime and where we are in the db, and what flier we're currently displaying
timeIndex = intervalTime
syncIndex = 0
dbIndex = 0
flierPath = "noneyet"
button_flag = "null"
#pull some vals from the config
configParser = ConfigParser.RawConfigParser()
configFilePath = r'config.txt'
configParser.read(configFilePath)
imagesPath = configParser.get('ebb-config', 'imagesPath')
dbPath = configParser.get('ebb-config', 'dbPath')
#initialize db and our place going through the db. We want dbCount instead of len(db) because len(db) doesn't account for the vacant holes in the db that I can't figure out how to get rid of...
db = TinyDB(dbPath)
howmany = Query()
dbCount = 0
for item in db:
dbCount = item.doc_id
print dbCount
#initialize display
#PIL.Image.new(mode, size, color=0)
Limage = Image.new('1', (epd4in2.EPD_HEIGHT, epd4in2.EPD_WIDTH), 255) # 255: clear the frame
try:
epd = epd4in2.EPD()
epd.init()
except:
print 'traceback.format_exc():\n%s' % traceback.format_exc()
exit()
## button press contingencies ##
@buttonshim.on_press(buttonshim.BUTTON_A)
def button_a(button, pressed):
global button_flag
buttonshim.set_pixel(0xFF, 0x00, 0x00)
button_flag = "button_1"
@buttonshim.on_press(buttonshim.BUTTON_B)
def button_b(button, pressed):
global button_flag
buttonshim.set_pixel(0x00, 0x00, 0xFF)
button_flag = "button_2"
@buttonshim.on_press(buttonshim.BUTTON_C)
def button_c(button, pressed):
global button_flag
buttonshim.set_pixel(0x00, 0x00, 0xFF)
button_flag = "button_3"
@buttonshim.on_press(buttonshim.BUTTON_D)
def button_d(button, pressed):
global button_flag
buttonshim.set_pixel(0xFF, 0x00, 0x00)
button_flag = "button_4"
@buttonshim.on_press(buttonshim.BUTTON_E)
def button_e(button, pressed):
global button_flag
buttonshim.set_pixel(0x00, 0x00, 0xFF)
button_flag = "button_5"
## MAIN LOOP ##
while True:
# chill for a bit, keep track of how long we're chilling
time.sleep(2)
print "time:", timeIndex, "/", intervalTime, "index", dbIndex, "/", dbCount, "sync time:", syncIndex, "/", syncTime
#iterate through syncTime and image time
syncIndex+=2
timeIndex+=2
#time to sync db with ssb
if syncIndex >= syncTime:
#light up red while syncing db
buttonshim.set_pixel(0xFF, 0x00, 0x00)
refreshdb.fresh()
#db count may have changed
for item in db:
dbCount = item.doc_id
syncIndex = 0
buttonshim.set_pixel(0x00, 0x00, 0x00)
#time to iterate through images
if timeIndex >= intervalTime:
#reset the index
timeIndex = 0
# iterate where we are in the db
dbIndex+=1
# if dbIndex is now out of range, reset to beginning (skipping 1 because that's the boot image)
if dbIndex > dbCount:
dbIndex=2
#grab the entry at dbIndex, newFlier is a dict
print ("getting db at")
print (dbIndex)
newFlier = db.get(doc_id=dbIndex)
#if that's an empty spot in the db we gotta keep lookin
while newFlier == None:
dbIndex+=1
newFlier = db.get(doc_id=dbIndex)
flierPath = newFlier["path"]
#display the images
try:
epd.init()
#Limage = Image.new('1', (epd4in2.EPD_HEIGHT, epd4in2.EPD_WIDTH), 255) # 255: clear the frame
bmp = Image.open(flierPath)
Limage.paste(bmp)
epd.display(epd.getbuffer(Limage))
time.sleep(2)
timeIndex+=2
epd.sleep()
except:
print 'traceback.format_exc():\n%s' % traceback.format_exc()
exit()
#in case the LED was on because we're buttoning through images
buttonshim.set_pixel(0x00, 0x00, 0x00)
#take pic
if button_flag == "button_1":
#generate unique file_name
unique = uuid.uuid4()
unique = str(unique)
jpgpath = imagesPath + unique + '.jpg'
#take photo
try:
result = subprocess.call(['raspistill', '-o', jpgpath, '-vf', '-w', '300', '-h', '400', '-t', '1000'])
except:
print 'traceback.format_exc():\n%s' % traceback.format_exc()
exit()
#generate unique bmp name
bmpath = imagesPath + str(unique) + '.bmp'
#convert to bmp
im = Image.open(jpgpath)
im = im.convert("1")
im.save(bmpath)
#add that file to the db. 0 is because this isn't coming from SSB, it's local
addtoDB.addFile(bmpath,dbPath,0)
#update dbCount
for item in db:
dbCount = item.doc_id
#display the image
epd.init()
Limage2 = Image.new('1', (epd4in2.EPD_HEIGHT, epd4in2.EPD_WIDTH), 255) # 255: clear the frame
bmp = Image.open(bmpath)
Limage.paste(bmp)
epd.display(epd.getbuffer(Limage))
#ok green done
buttonshim.set_pixel(0x00, 0x00, 0x00)
time.sleep(3)
timeIndex+=2
epd.sleep()
button_flag = "null"
#move to the next image
elif button_flag == "button_2":
print ("next image")
timeIndex = intervalTime
button_flag = "null"
#go back to the previous image
elif button_flag == "button_3":
print ("previous image")
#we go back 2 because we have to account for calling timeIndex = intervalTime iterates forward by 1
dbIndex-=2
if dbIndex < 2:
dbIndex = dbCount-1
timeIndex = intervalTime
button_flag = "null"
#delete current image
elif button_flag == "button_4":
button_flag = "null"
#can't delete the default image
if dbIndex != 1:
#CONFIRM WITH USER THEY WANT TO DELETE
epd.init()
#Limage = Image.new('1', (epd4in2.EPD_HEIGHT, epd4in2.EPD_WIDTH), 255) # 255: clear the frame
draw = ImageDraw.Draw(Limage)
font18 = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-microhei.ttc', 24)
draw.text((2, 0), 'Are you sure', font = font18, fill = 255)
draw.text((2, 40), 'you want to delete', font = font18, fill = 255)
draw.text((2, 80), 'the current image?', font = font18, fill = 255)
draw.text((2, 120), 'Press button 4', font = font18, fill = 255)
draw.text((2, 160), 'again to confirm.', font = font18, fill = 255)
draw.text((2, 200), 'Press any other', font = font18, fill = 255)
draw.text((2, 240), 'button for no.', font = font18, fill = 255)
epd.display(epd.getbuffer(Limage))
epd.sleep()
while button_flag == "null":
buttonshim.set_pixel(0xFF, 0x00, 0x00)
time.sleep(.1)
buttonshim.set_pixel(0x00, 0x00, 0x00)
time.sleep(.05)
#sounds like delete time
if button_flag == "button_4":
Fruit = Query()
#results = db.search(Fruit.path == flierPath)
db.remove(Fruit.path == flierPath)
#update dbCount
for item in db:
dbCount = item.doc_id
#ok so it's deleted, let's force display of next image
timeIndex = intervalTime
else:
#stay on same image and refresh to get rid of delete text
dbIndex-=1
timeIndex = intervalTime
button_flag = "null"
buttonshim.set_pixel(0x00, 0x00, 0xFF)
#weather button!
elif button_flag == "button_5":
#ACTUALLY PARSE THE JSON DUH, THIS IS BROKEN
#get the weather
#proc = subprocess.Popen(["wget", "http://wttr.in/btv_FnQT.png"], stdout=subprocess.PIPE)
proc = subprocess.Popen(["wget", "http://wttr.in/btv_FQT.png"], stdout=subprocess.PIPE)
(out, err) = proc.communicate()
#convert
size = 400, 300
#too pixely
#im = Image.open("btv_FnQT.png")
#im = im.rotate(90, Image.NEAREST, "expand=1")
#sideways, no rotate
im = Image.open("btv_FQT.png")
im.thumbnail(size, Image.BICUBIC)
im = im.convert("1")
im.save("btv.bmp")
#display the weather
epd.init()
Limage2 = Image.new('1', (epd4in2.EPD_HEIGHT, epd4in2.EPD_WIDTH), 255) # 255: clear the frame
bmp = Image.open("btv.bmp")
Limage.paste(bmp)
epd.display(epd.getbuffer(Limage))
time.sleep(3)
timeIndex+=2
epd.sleep()
button_flag = "null"
buttonshim.set_pixel(0x00, 0x00, 0x00)