Python code for Nokia N82 phone to record the GPS location, Cell ID, and an image from front camera every 3 seconds. It also records a sound file continuously and records the playhead position into the log file to ensure a tightly coupled link between audio and location data.
You will to ceate a "datalogger" folder on your phone's micro-SD card before using the application for the first occasion. This can be done while the phone is connected to a PC.
Code used in FOSS4G academic paper => http://2009.foss4g.org/researchpapers/#researchpaper_3
(Code is availale for use in your project under MIT Licence)
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import e32, appuifw, graphics
import key_codes
import positioning
import sensor
import location
import audio
import sysinfo
import camera
import time
import audio
counter =0
def handle_redraw(rect):
canvas.clear()
canvas.blit(img)
def startrecording():
global S
global counter
t=int(time.time())
filename="e:\\datalogger\\snd_"+str(t)+".wav"
S=audio.Sound.open(filename)
S.record()
img.point ((10,20),0xff0000,width=20)
handle_redraw(())
def stoprecording():
global S
S.stop()
S.close()
def fncSavedata (data):
io=open("e:\\datalogger\\gps_travel.log",'a')
io.write(data +'\n')
io.close
return
def cb(event):
global counter
counter = counter + 1
t=int(time.time())
sat=event["satellites"]
tm=sat["time"]
tot=sat["satellites"]
used=sat["used_satellites"]
pos = event["position"]
lat=pos["latitude"]
lng=pos["longitude"]
alt=pos["altitude"]
vdop=pos["vertical_accuracy"]
hdop=pos["horizontal_accuracy"]
crse=event["course"]
hdg=crse["heading"]
hdgacc=crse["heading_accuracy"]
spd=crse["speed"]
sdb=sysinfo.signal_dbm()
loc = location.gsm_location()
sloc = str(loc)
sloc = sloc.replace(',','/')
global S
sndtime=int(S.current_position() /1000)
s = "gps:"+str(t)+","+str(sndtime)+','+str(tm)+","+str(tot)+"," +str(used)+","+str(lat)+","+str(lng)+ "," + str(alt)
s = s +"," + str(vdop) + "," + str(hdop) + "," + str(hdg) + "," + str(hdgacc) + "," + str(spd) + "gsm:"+str(sloc)+","+str(sdb)
fncSavedata(s)
pic=camera.take_photo('RGB',(320,240),0,'none','auto','auto',1)
sp="e:\\datalogger\\pic" + str(t) + '.jpg'
pic.save(sp)
img.clear()
img.text((40,34),u'Log ID: ' + str(counter),0xff0000,font='normal')
img.text((40,64),u'Sats: ' + str(used) + "/" + str(tot) ,0xff0000,font='normal')
img.text((40,94),u'Spd: ' + str(int(spd)),0xff0000,font='normal')
img.text((40,124),u'Snd: ' + str(sndtime),0xff0000,font='normal')
handle_redraw(())
canvas = appuifw.Canvas(event_callback = None)
appuifw.app.body = canvas
appuifw.app.title = u"Data logger"
w,h = canvas.size
img=graphics.Image.new((w,h))
startrecording()
positioning.set_requestors([{"type":"service","format":"application","data":"test_app"}])
positioning.select_module(270526860)
positioning.position(course=1,satellites=1,callback=cb,interval=1000000,partial=1)
app_lock = e32.Ao_lock()
app_lock.wait()
stoprecording()
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Copyright (c) 2009 GRCNZ,University of Canterbury Geog Dept
Permission is hereby granted, free of charge, to any personobtaining a copy of this software and associated documentationfiles (the "Software"), to deal in the Software withoutrestriction, including without limitation the rights to use,copy, modify, merge, publish, distribute, sublicense, and/or sellcopies of the Software, and to permit persons to whom theSoftware is furnished to do so, subject to the followingconditions:
The above copyright notice and this permission notice shall beincluded in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIESOF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE ANDNONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHTHOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISINGFROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OROTHER DEALINGS IN THE SOFTWARE.
