Hi ms12, We created a setup where a 3G mobile broadband dongle works as telephony backend for Android Eclaire (without voice calls of course). It sounds similar to what you guys are doing.
I believe that implementing an ip-up script in /system/etc/ppp will make things work: /system/etc/ppp/ip-up should contain something like this: /system/bin/setprop "net.interfaces.defaultroute" "gprs" /system/bin/setprop "net.gprs.dns1" "$DNS1" /system/bin/setprop "net.gprs.dns2" "$DNS2" /system/bin/setprop "net.gprs.local-ip" "$IPLOCAL" /system/bin/setprop "net.gprs.remote-ip" "$IPREMOTE" /system/bin/setprop "net.gprs.gw" "$IPREMOTE" This script will run every time PPP sets up a connection and provide Android with the correct gateway, dns, etc. To check that it actually ran, I added the following: /system/bin/log -t pppd "IP-UP TRACE for gprs" /system/bin/log -t pppd "DNS1 $DNS1" /system/bin/log -t pppd "DNS2 $DNS2" /system/bin/log -t pppd "local-ip $IPLOCAL" /system/bin/log -t pppd "remote-ip $IPREMOTE" /system/bin/log -t pppd "gw $IPREMOTE" ..which will throw useful information into logcat output. You can also make a /system/etc/ip-down script to change things back the way they were (if you have multiple ways of connecting to the internet). But how do you initiate the PPP connection? Via Android RIL or just via init? I am unsure of whether Android will understand that it has a GPRS packet data connection without proper handling in the RIL (I don't know if setting the above properties is sufficient)... You should be aware that in later Android releases you need some security hacks to allow the RIL to spawn the PPP process (which must run as root), and you need some tweaky plumbing to ensure proper interaction between RIL & PPP during handling of RIL_REQUEST_SETUP_DATA_CALL... Let me know how you get along with this. - Henrik -----Original Message----- From: android-porting@googlegroups.com [mailto:android-port...@googlegroups.com] On Behalf Of Daniel Baeyens Sent: 10. maj 2010 10:23 To: mstic...@gmail.com Cc: android-porting Subject: Re: [android-porting] Data connection via cell modem (GPRS) Hi, On Mon, May 10, 2010 at 4:53 AM, ms12 <mstic...@gmail.com> wrote: > We are trying to implement a demo of a mobile industrial sensor via > android. One of the goals of the demonstration is to send data to a > web site. The cell modem is working for SMS messages via the > reference RIL just fine. We would like to use GPRS to allow somewhat > more data. We currently have the gsm0710muxd working, with one > channel connected to the RIL, the other connected via chat/pppd such > that ping works from the Linux console. What we can't seem to figure > out is how to get Android to use the default route that is set up via > pppd. Can anybody give me some pointers on what needs to be done to > get Android to use the connection? Thanks much in advance. Which is the full command you are using for setting the route? Can you explain a little bit more your process? KR -- Daniel Baeyens Warp Networks S.L. - http://www.warp.es -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting
