[ltp] X301 Ericsson Modul f3507g AT Command reference

[Nickolai Zeldovich]

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--1085000002-256741367-1225040182=:16535
Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: QUOTED-PRINTABLE

Apologies for the earlier base64-encoded message; I'm not sure why gmail=20
decided to encode it that way.

> Anyone out there has working GPS under Linux with an Ericsson f3507g?

Yes.  The f3507g has a number of serial interfaces, which come up as
/dev/ttyACM0 through /dev/ttyACM2 on my machine (Thinkpad W500).  I
believe the last one (USB interface# 9, /dev/ttyACM2) is used to emit
GPS NMEA sentences.  You can get a list of special commands the card
supports by sending it "AT*".  To activate NMEA on /dev/ttyACM2, send
it the following commands:

    AT+CFUN=3D1
    AT*E2GPSCTL=3D1,10,1
    AT*E2GPSNPD

After the last command, the port stops responding to any subsequent
commands, and starts emitting NMEA sentences, at which point you can
run gpsd on /dev/ttyACM2.  (You can still reconfigure the GPS
parameters via /dev/ttyACM0, as far as I can tell.)  In my case, I run
the following expect script before running gpsd:

    spawn cu -l /dev/ttyACM2
    expect "Connected."

    sleep 1
    send "AT+CFUN=3D1\r"
    expect "+PACSP0=E2=80=B3

    sleep 1
    send "AT*E2GPSCTL=3D1,10,1\r"
    expect "OK"

    sleep 1
    send "AT*E2GPSNPD\r"
    expect "GPGGA"

Nickolai.
--1085000002-256741367-1225040182=:16535--