Kindle Weather Display WITHOUT server

[Rufuss]

Hello

may I add a question concerning Wifi disconncts to this thread?

I'm aso running a weather display. Sometimes the Kindle 4 loses the connection, probably because the signal is a bit weak. In this case I have to reboot, chose in the Kindle the Wifi search and connect again to my network by entering the password each time again.

Is there the possibility to extend the code

if [ `lipc-get-prop com.lab126.wifid cmState` != "CONNECTED" ]; then
	exit 0
fi

by a command to re-connect to a Wifi network again in case Wifi was disconnected?

This would also allow to switch off the access point over night.

Regards
R.

[groesser3]

hi, I would like to convert a svg-file to a png on the kindle. Unforunatly there are some missing libs. One is libcroco, but I suppose, that other libs are missing (http://wiki.dreamhost.com/Installing_librsvg).

[root@kindle bin]# export LD_LIBRARY_PATH=/mnt/us/rsvg-convert/lib:/mnt/us/rsvg-convert/kindle-lib::/mnt/us/lib${LD_LIBRARY_PATH}
[root@kindle bin]# ./rsvg-convert
./rsvg-convert: error while loading shared libraries: libcroco-0.6.so.3: cannot open shared object file: No such file or directory

Has someone a working rsvg-convert installation on the kindle (Kindle 4NT - black)? Cairosvg (cairosvg.org) looks like a promising alternative, but still requires compiling some c-modules (minimum seams "cffi" for "cairocffi").



ps. I googled a lot, but could not found any solution. I also tried to cross-compile rsvg, tried to compile cffi on the kindle using tcc but wasn't successfull either.

[brianinmaine]

heres the lib.

I have a partition on my laptop that I used debootstrap to add the base arm install to. Then I added qemu static to it so i can chroot into it. Then I can easily apt-get anything I want, even compile lots of stuff there. Works well for me!

[brianinmaine]

Running my version of twobobs 'filechecker' script leaves this package. The kindle-lib directory has libs that are more current than the ones on the device and can usually be deleted.

[groesser3]

@brianinmaine: thanks for the really quick reply!

Now at least I can start the app:

[root@kindle bin]# ./rsvg-convert --version
rsvg-convert version 2.36.1

Unfortunatly, when I try to convert a file I get the following error (different glibc?):

[root@kindle bin]# export LD_LIBRARY_PATH=../lib:../kindle-lib
[root@kindle bin]# ./rsvg-convert --background-color=white -o /tmp/weather-script-output.png /tmp/weather-script-output.svg
./rsvg-convert: error while loading shared libraries: invalid mode for dlopen(): Invalid argument
[root@kindle bin]#

Any advice how to resolve this issue is appreciated!



Loaded objects are as follows:

LD_TRACE_LOADED_OBJECTS=1 ./rsvg-convert --background-color=white -o /tmp/weather-script-output.png /tmp/weather-script-output.svg
librsvg-2.so.2 => ../lib/librsvg-2.so.2 (0x40021000)
libgobject-2.0.so.0 => ../kindle-lib/libgobject-2.0.so.0 (0x4005b000)
libcairo.so.2 => ../kindle-lib/libcairo.so.2 (0x400ac000)
libglib-2.0.so.0 => ../kindle-lib/libglib-2.0.so.0 (0x4018f000)
libm.so.6 => ../kindle-lib/libm.so.6 (0x40277000)
libpthread.so.0 => ../kindle-lib/libpthread.so.0 (0x40320000)
libc.so.6 => /lib/libc.so.6 (0x40340000)
/lib/ld-linux.so.3 (0x40000000)
libgdk_pixbuf-2.0.so.0 => ../kindle-lib/libgdk_pixbuf-2.0.so.0 (0x4043b000)
libgio-2.0.so.0 => ../kindle-lib/libgio-2.0.so.0 (0x40461000)
libpangocairo-1.0.so.0 => ../kindle-lib/libpangocairo-1.0.so.0 (0x40587000)
libpango-1.0.so.0 => ../kindle-lib/libpango-1.0.so.0 (0x4059b000)
libcroco-0.6.so.3 => ../lib/libcroco-0.6.so.3 (0x405e6000)
libxml2.so.2 => ../kindle-lib/libxml2.so.2 (0x40620000)
libgthread-2.0.so.0 => ../kindle-lib/libgthread-2.0.so.0 (0x40752000)
libffi.so.5 => ../kindle-lib/libffi.so.5 (0x4075c000)
libpixman-1.so.0 => ../kindle-lib/libpixman-1.so.0 (0x40770000)
libfontconfig.so.1 => ../kindle-lib/libfontconfig.so.1 (0x40805000)
libfreetype.so.6 => ../kindle-lib/libfreetype.so.6 (0x4083b000)
libpng12.so.0 => ../kindle-lib/libpng12.so.0 (0x408b7000)
libxcb-shm.so.0 => ../kindle-lib/libxcb-shm.so.0 (0x408e0000)
libxcb-render.so.0 => ../kindle-lib/libxcb-render.so.0 (0x408eb000)
libxcb.so.1 => ../kindle-lib/libxcb.so.1 (0x408fa000)
libXrender.so.1 => ../kindle-lib/libXrender.so.1 (0x4091a000)
libX11.so.6 => ../kindle-lib/libX11.so.6 (0x4092a000)
libz.so.1 => ../kindle-lib/libz.so.1 (0x40a45000)
librt.so.1 => ../kindle-lib/librt.so.1 (0x40a63000)
libgcc_s.so.1 => ../kindle-lib/libgcc_s.so.1 (0x40a72000)
libpcre.so.3 => ../lib/libpcre.so.3 (0x40a9c000)
libgmodule-2.0.so.0 => ../kindle-lib/libgmodule-2.0.so.0 (0x40add000)
libselinux.so.1 => ../lib/libselinux.so.1 (0x40ae9000)
libresolv.so.2 => ../kindle-lib/libresolv.so.2 (0x40b0e000)
libpangoft2-1.0.so.0 => ../kindle-lib/libpangoft2-1.0.so.0 (0x40b22000)
libdl.so.2 => ../kindle-lib/libdl.so.2 (0x40b4f000)
liblzma.so.5 => ../lib/liblzma.so.5 (0x40b5a000)
libexpat.so.1 => ../kindle-lib/libexpat.so.1 (0x40b82000)
libXau.so.6 => ../kindle-lib/libXau.so.6 (0x40ba6000)
libXdmcp.so.6 => ../kindle-lib/libXdmcp.so.6 (0x40bb0000)

[groesser3]

eventually I found a solution for the dlopen()-issue: I simply removed (renamend) the libdl.so.2 in the kindle-lib folder and voila it worked!!

PS:this thread was really helpful to find the cause:

@brianinmaine: again, without your help I would still try to compile

[brianinmaine]

I don't use the kindle-lib directory in my path, I just keep it for "symbol? errors? sometimes?" I just have the lib in the path and then if it still won't load I copy the kindle lib into the lib dir. when it runs, I delete the kindle-lib dir to keep my setup tidy.

I couldn't do any of this without the wonderful instructors on here - twobob, knc1, MANY more! Pure awesomeness!

also I think your path should have been: LD_LIBRARY_PATH=../lib:/lib:/usr/lib to include the system files? That messed me up for a long time!

[Hellmann]

Hey,

im using this code from you and changed it to my location and language.

# coding: utf-8
#!/usr/bin/python2

# Kindle Weather Display
# Matthew Petroff (http://www.mpetroff.net/)
# September 2012
# Reventlov Giskard (http://volcanis.me/)

import datetime
import codecs
import urllib2
import json

#######################
#unit = "fahrenheit"
unit = "celsius"
#unit_ = u'°F'
unit_ = u'°C'
# Api key from wunderground, get one here: http://www.wunderground.com/weather/api/
api_key = "68486b5679b7b81d"
# Search for the abbreviation here: http://www.wunderground.com/cgi-bin/findweather/hdfForecast?query=
#city="CA/San_Francisco/"
city = "Hamburg"
# LOCALISATION
#days_of_week = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
days_of_week = ['Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag', 'Sonntag']
#tomorrow = 'Tomorrow'
tomorrow = 'Morgen'
#today = 'Today'
today = "Heute"
#hhigh = "High"
hhigh = "Maximum"
#llow = "Low"
llow = "Minimum"
#######################

highs = [None]*4
lows = [None]*4
icons = [None]*4

weather_json = urllib2.urlopen('http://api.wunderground.com/api/'+api_key+'/forecast/lang:DL/q/'+city+'.json')
json_string = weather_json.read()
parsed_json = json.loads(json_string)

highs[0] = parsed_json['forecast']['simpleforecast']['forecastday'][0]['high'][unit]
lows[0] = parsed_json['forecast']['simpleforecast']['forecastday'][0]['low'][unit]
icons[0] = parsed_json['forecast']['simpleforecast']['forecastday'][0]['icon']

highs[1] = parsed_json['forecast']['simpleforecast']['forecastday'][1]['high'][unit]
lows[1] = parsed_json['forecast']['simpleforecast']['forecastday'][1]['low'][unit]
icons[1] = parsed_json['forecast']['simpleforecast']['forecastday'][1]['icon']

highs[2] = parsed_json['forecast']['simpleforecast']['forecastday'][2]['high'][unit]
lows[2] = parsed_json['forecast']['simpleforecast']['forecastday'][2]['low'][unit]
icons[2] = parsed_json['forecast']['simpleforecast']['forecastday'][2]['icon']

highs[3] = parsed_json['forecast']['simpleforecast']['forecastday'][3]['high'][unit]
lows[3] = parsed_json['forecast']['simpleforecast']['forecastday'][3]['low'][unit]
icons[3] = parsed_json['forecast']['simpleforecast']['forecastday'][3]['icon']

weather_json.close()

# Parse dates
day_one = datetime.datetime.today()

#
# Preprocess SVG
#

# Open SVG to process
output = codecs.open('weather-script-preprocess.svg', 'r', encoding='utf-8').read()

# Insert icons and temperatures
output = output.replace('ICON_ONE',icons[0]).replace('ICON_TWO',icons[1]).replace('ICON_THREE',icons[2]).replace('ICON_FOUR',icons[3])
output = output.replace('HIGH_ONE',str(highs[0])).replace('HIGH_TWO',str(highs[1])).replace('HIGH_THREE',str(highs[2])).replace('HIGH_FOUR',str(highs[3]))
output = output.replace('LOW_ONE',str(lows[0])).replace('LOW_TWO',str(lows[1])).replace('LOW_THREE',str(lows[2])).replace('LOW_FOUR',str(lows[3]))

# Localisation/Insert days of week
one_day = datetime.timedelta(days=1)
output = output.replace('DAY_THREE',days_of_week[(day_one + 2*one_day).weekday()]).replace('DAY_FOUR',days_of_week[(day_one + 3*one_day).weekday()])

# Insert the temperatures unit
output = output.replace('UNIT',unit_)

# Localisation
output = output.replace('TOMORROW',tomorrow)
output = output.replace('TODAY',today)
output = output.replace('HIGH',hhigh)
output = output.replace('LOW',llow)

output = output.replace('DATE',day_one.strftime("%H:%M"))

# Write output
codecs.open('weather-script-output.svg', 'w', encoding='utf-8').write(output)

but im getting an error in line 45

Traceback (most recent call last):
  File "weather-script.py", line 45, in <module>
    highs[0] = parsed_json['forecast']['simpleforecast']['forecastday'][0]['high'][unit]
KeyError: 'forecast'

i cant figure out whats going wrong. the request seems to work normal, because in my wunderground analytics tool i can see a request.

thanks a lot and greetings

hellmann

[Reventlov]

I'd remove this api key from this public page. Looking at the answer of wunderground, it appears that there are many towns named hamburg:

     "results": [
            {
                "city": "Hamburg", 
                "country": "CA", 
                "country_iso3166": "CA", 
                "country_name": "", 
                "l": "/q/zmw:00000.3.71221", 
                "name": "Hamburg", 
                "state": "AB", 
                "zmw": "00000.3.71221"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:71646.1.99999", 
                "name": "Hamburg", 
                "state": "AR", 
                "zmw": "71646.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:06371.2.99999", 
                "name": "Hamburg", 
                "state": "CT", 
                "zmw": "06371.2.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "DL", 
                "country_iso3166": "DE", 
                "country_name": "Deutschland", 
                "l": "/q/zmw:00000.3.10147", 
                "name": "Hamburg", 
                "state": "", 
                "zmw": "00000.3.10147"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:62045.1.99999", 
                "name": "Hamburg", 
                "state": "IL", 
                "zmw": "62045.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:51640.1.99999", 
                "name": "Hamburg", 
                "state": "IA", 
                "zmw": "51640.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:71339.1.99999", 
                "name": "Hamburg", 
                "state": "LA", 
                "zmw": "71339.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:48139.1.99999", 
                "name": "Hamburg", 
                "state": "MI", 
                "zmw": "48139.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:55339.1.99999", 
                "name": "Hamburg", 
                "state": "MN", 
                "zmw": "55339.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:07419.1.99999", 
                "name": "Hamburg", 
                "state": "NJ", 
                "zmw": "07419.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:14075.1.99999", 
                "name": "Hamburg", 
                "state": "NY", 
                "zmw": "14075.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:19526.1.99999", 
                "name": "Hamburg", 
                "state": "PA", 
                "zmw": "19526.1.99999"
            }, 
            {
                "city": "Hamburg", 
                "country": "US", 
                "country_iso3166": "US", 
                "country_name": "Vereinigte Staaten", 
                "l": "/q/zmw:54411.2.99999", 
                "name": "Hamburg", 
                "state": "WI", 
                "zmw": "54411.2.99999"
            }

Pick one by changing the query "Hamburg" to something else, as described here: http://www.wunderground.com/weather/...s?d=data/index

For information, it can be anything listed here:

Example                               Description                                                                                                                     
-----------------------------------------------------------------
CA/San_Francisco                      US state/city
60290                                 US zipcode
Australia/Sydney                      country/city
37.8,-122.4                           latitude,longitude
KJFK                                  airport code
pws:KCASANFR70                        PWS id
autoip                                AutoIP address location
autoip.json?geo_ip=38.102.136.138     specific IP address location

[axelPW2]

Hi folks, I am new here and new to the Kindle PaperWhite2 that I would like to make it show the weather forecast as screensaver or not. My PW2 is jailbroken and is running Kual. Is this possible right now, does a program already exist for such a thing?
If positive, giving us a link for download would be absolutely awesome!!! Thank you!

[mattsches]

Originally Posted by brianinmaine

Running my version of twobobs 'filechecker' script leaves this package. The kindle-lib directory has libs that are more current than the ones on the device and can usually be deleted.

Hello Brian,

I try to do the same thing as scolby33 described in his initial post (i. e. make the weather display run on my K4 black without additional server). The rsvg-convert you provided to groesser3 already helped me handle the svg-png conversion (thanks for that!). The only thing I seem to be missing is pngcrush for reducing the color depth (otherwise the picture appears distorted on the device).

Do you possibly see a chance to find a kindle compliant pngcrush compilation, like you did with rsvg-convert? That'd be highly appreciated!

Best regards,
mattsches

[mattsches]

Found a working binary for pngcrush on kindle on the web. Just in case some else needs it, there you go:

http://arm.koji.fedoraproject.org/ko...?buildID=11465

I downloaded the armv5tel binary rpm, opened it in 7-Zip (on W7), extracted the pngcrush executable and copied it to the K4 - working fine. Caution, newer versions didn't work for me, required a newer libpng than I had on my device. Going back to 1.6.10 seemed to be the easiest option.
So, thanks again to you guys for your valuable work and ideas!