[vvj]

Answer please my question: whether Probably to realise
>> on/off function "Static Navigation" on phone with built in GPS (6110 Navigator, n95).

In this two script its work on bluetooth GPS(Sirf III)

staticnvon.py

import socket

def high_endian(value):
    h, l = divmod(value, 256)
    return chr(h) + chr(l)

def checksum(payload):
    csum = 0
    for c in payload:
        csum += ord(c)
    return high_endian(csum & 0x7FFF)

def sirf_message(payload):
    return ('\xA0\xA2' + high_endian(len(payload)) + payload +
            checksum(payload) + '\xB0\xB3')

def disable_static():
    return sirf_message('\x8F' + '\x00')

def enable_static():
    return sirf_message('\x8F' + '\x01')
    
def switch_to_nmea():
    mode = '\x02'
        # 0 = Enable NMEA debug messages
        # 1 = Disable NMEA debug messages
        # 2 = Do not change NMEA debug setting
    gga_rate = '\x01' # numer of GGA messages per second; 0 = off
    gga_checksum = '\x01' # 0 = off, 1 = on
    gll_rate = '\x01' # numer of GLL messages per second; 0 = off
    gll_checksum = '\x01' # 0 = off, 1 = on
    gsa_rate = '\x01' # numer of GSA messages per second; 0 = off
    gsa_checksum = '\x01' # 0 = off, 1 = on
    gsv_rate = '\x01' # numer of GSV messages per second; 0 = off
    gsv_checksum = '\x01' # 0 = off, 1 = on
    rmc_rate = '\x01' # numer of RMC messages per second; 0 = off
    rmc_checksum = '\x01' # 0 = off, 1 = on
    vtg_rate = '\x01' # numer of VTG messages per second; 0 = off
    vtg_checksum = '\x01' # 0 = off, 1 = on
    mss_rate = '\x01' # numer of MSS messages per second; 0 = off
    mss_checksum = '\x01' # 0 = off, 1 = on
    zda_rate = '\x01' # numer of ZDA messages per second; 0 = off
    zda_checksum = '\x01' # 0 = off, 1 = on
    baud_rate = high_endian(38400)
    return sirf_message('\x81' + mode + gga_rate + gga_checksum +
                        gll_rate + gll_checksum +
                        gsa_rate + gsa_checksum +
                        gsv_rate + gsv_checksum +
                        rmc_rate + rmc_checksum +
                        vtg_rate + vtg_checksum +
                        mss_rate + mss_checksum +
                        '\x00\x00' +
                        zda_rate + zda_checksum +
                        '\x00\x00' +
                        baud_rate)                     

#gps_addr='00:02:76:fd:a2:94'

gps_addr,services=socket.bt_discover()
target=(gps_addr,services.values()[0])

sock=socket.socket(socket.AF_BT, socket.SOCK_STREAM)
#target=(gps_addr,1)
sock.connect(target)

print 'Connected to the GPS'

print 'To SiRF'
temps="$PSRF100,0,38400,8,1,0*3C"
sock.send(temps)

print 'Enable Static Nav'
tempnv=enable_static()
sock.send(tempnv)

print 'Back to NMEA'
tempnm=switch_to_nmea()
sock.send(tempnm)

sock.close()

staticnvoff.py

import socket

def high_endian(value):
    h, l = divmod(value, 256)
    return chr(h) + chr(l)

def checksum(payload):
    csum = 0
    for c in payload:
        csum += ord(c)
    return high_endian(csum & 0x7FFF)

def sirf_message(payload):
    return ('\xA0\xA2' + high_endian(len(payload)) + payload +
            checksum(payload) + '\xB0\xB3')

def disable_static():
    return sirf_message('\x8F' + '\x00')

def enable_static():
    return sirf_message('\x8F' + '\x01')
    
def switch_to_nmea():
    mode = '\x02'
        # 0 = Enable NMEA debug messages
        # 1 = Disable NMEA debug messages
        # 2 = Do not change NMEA debug setting
    gga_rate = '\x01' # numer of GGA messages per second; 0 = off
    gga_checksum = '\x01' # 0 = off, 1 = on
    gll_rate = '\x01' # numer of GLL messages per second; 0 = off
    gll_checksum = '\x01' # 0 = off, 1 = on
    gsa_rate = '\x01' # numer of GSA messages per second; 0 = off
    gsa_checksum = '\x01' # 0 = off, 1 = on
    gsv_rate = '\x01' # numer of GSV messages per second; 0 = off
    gsv_checksum = '\x01' # 0 = off, 1 = on
    rmc_rate = '\x01' # numer of RMC messages per second; 0 = off
    rmc_checksum = '\x01' # 0 = off, 1 = on
    vtg_rate = '\x01' # numer of VTG messages per second; 0 = off
    vtg_checksum = '\x01' # 0 = off, 1 = on
    mss_rate = '\x01' # numer of MSS messages per second; 0 = off
    mss_checksum = '\x01' # 0 = off, 1 = on
    zda_rate = '\x01' # numer of ZDA messages per second; 0 = off
    zda_checksum = '\x01' # 0 = off, 1 = on
    baud_rate = high_endian(38400)
    return sirf_message('\x81' + mode + gga_rate + gga_checksum +
                        gll_rate + gll_checksum +
                        gsa_rate + gsa_checksum +
                        gsv_rate + gsv_checksum +
                        rmc_rate + rmc_checksum +
                        vtg_rate + vtg_checksum +
                        mss_rate + mss_checksum +
                        '\x00\x00' +
                        zda_rate + zda_checksum +
                        '\x00\x00' +
                        baud_rate)                     

#gps_addr='00:02:76:fd:a2:94'

gps_addr,services=socket.bt_discover()
target=(gps_addr,services.values()[0])

sock=socket.socket(socket.AF_BT, socket.SOCK_STREAM)
#target=(gps_addr,1)
sock.connect(target)

print 'Connected to the GPS'

print 'To SiRF'
temps="$PSRF100,0,38400,8,1,0*3C"
sock.send(temps)

print 'Disable Static Nav'
tempnv=disable_static()
sock.send(tempnv)

print 'Back to NMEA'
tempnm=switch_to_nmea()
sock.send(tempnm)

sock.close()

its script's from Richard's Stuff (http://wyzwun.googlepages.com/pythonforseries60)

Thank all very much!
(It is translated ru-en promt)

[hopet]

I've hacked together slightly more elaborate application (and called it staticnv):

http://sitola.fi.muni.cz/~hopet/staticnv/

The code sniplets provided by Robert were just oversimplified for my configuration. The page describes also installation steps. It's also written using PyS60 and verified to work with my combination of Nokia 5500 (Symbian 60 3rd) and Nokia LD-3W Bluetooth GPS module. It shows also some rudimentary support for DGPS (rather as a sample to show how it works than anything useful).