h1. XMMProtocolInterfaces
{{>toc}}
h2. usb_sel
h3. HowTO
First you need to get a root shell in the device as the commands need to be executed as root.
Once this is done you need to switch the USB connector to the modem USB. This can be done with the following command:
echo MODEM > /sys/devices/virtual/sec/switch/usb_sel
Then nothing will happen, you will still be able to login through adb.
To make the device switch to the modem USB you then need to unplug and replug the USB cable between your computer and the device.
At this point, if the modem was booted, you'll see a new USB device appearing.
Some serial ports will also appear.
Tested on Replicant 6.0 0004 RC3
| Device | Distribution | Modem status | USB ids | tty |
| GT-I9100 | Replicant 6.0 0004 RC3 | Booted | TODO | /dev/ttyACM0 -> /dev/ttyACM6 |
| GT-I9100 | Replicant 6.0 0004 RC3 | Off | None | N/A |
| GT-I9300 | Replicant 6.0 0004 RC3 | Booted | 1519:0020 Comneon HSIC Device | /dev/ttyACM0 -> /dev/ttyACM6 |
h3. Protocols
| Device | state | UART | Protocol |
| GT-I9100 | modem booted | /dev/ttyACM0 | AT: [[GTI9100ModemTTYACM0]] |
h3. GT-I9100
Xgoldmon seem to display things on the GT-I9100:
# ./xgoldmon -vvvv -i localhost -t s2 -l /dev/ttyACM1
LOG:>>[HIGH]oembatt.c,310,[DISP] Thermistor : measured_value=1630666778<<
LOG:>>[HIGH]oembatt.c,137,[DISP] oem_set_batt_level : 4220<<
LOG:>>[HIGH]oembatt.c,236,[DISP] BATT : measured_value_mv=4220, AvgBattVal_mv=4007, battery_level=5<<
LOG:>>[LOW]oemdisplay.c,363,no change -> rssi:4, bat:5<<
LOG:>>[HIGH]oembatt.c,310,[DISP] Thermistor : measured_value=1630666779<<
LOG:>>[HIGH]oembatt.c,137,[DISP] oem_set_batt_level : 4225<<
LOG:>>[HIGH]oembatt.c,236,[DISP] BATT : measured_value_mv=4225, AvgBattVal_mv=4026, battery_level=5<<
LOG:>>[LOW]oemdisplay.c,363,no change -> rssi:4, bat:5<<
LOG:>>[HIGH]oembatt.c,310,[DISP] Thermistor : measured_value=1630666778<<
LOG:>>[HIGH]oembatt.c,137,[DISP] oem_set_batt_level : 4220<<
LOG:>>[HIGH]oembatt.c,236,[DISP] BATT : measured_value_mv=4220, AvgBattVal_mv=4055, battery_level=5<<
LOG:>>[LOW]oemdisplay.c,363,no change -> rssi:4, bat:5<<
And when calling an (inexisting/invalid) number, the frames appear in Wireshark.
h2. GT-I9300
# picocom /dev/ttyACM0
picocom v3.1
port is : /dev/ttyACM0
flowcontrol : none
baudrate is : 9600
parity is : none
databits are : 8
stopbits are : 1
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
hangup is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv -E
imap is :
omap is :
emap is : crcrlf,delbs,
logfile is : none
initstring : none
exit_after is : not set
exit is : no
Type [C-a] [C-h] to see available commands
Terminal ready
AT+TRACE=1
OK
AT
OK
AT+CLAC
ATS
ATD
ATA
ATO
ATE
ATH
ATV
ATZ
ATl
ATm
ATQ
ATX
AT&F
AT&D
AT&C
AT\Q
AT+CGSMS
AT+CMGD
AT+CMGF
AT+CMGL
AT+CMGR
AT+CMGS
AT+CMGW
AT+CMMS
AT+CMSS
AT+CNMA
AT+CNMI
AT+CPMS
AT+CSCA
AT+CSCB
AT+CSMS
AT+XCSSMS
AT+XSMS
AT+XTESM
AT+CSDH
AT+CSAS
AT+CRES
AT+CMGC
AT+CSMP
AT+CGREG
AT+COPN
AT+COPS
AT+CREG
AT+CSQ
AT+XBANDSEL
AT+XCOPS
AT+XCSPAGING
AT+XEONS
AT+XREG
AT+XAACOPS
AT+XUBANDSEL
AT+XRAT
AT+CPLS
AT+CPOL
AT+XHOMEZR
AT+XCSQ
AT+CHUP
AT+CMOD
AT+CMUT
AT+CTFR
AT+VTS
AT+XCALLSTAT
AT+XDTMF
AT+XVTS
AT+CSTA
AT+CVHU
AT+VTD
AT+CCWE
AT+CR
AT+CRC
AT+XPROGRESS
AT+XREDIAL
AT+CAOC
AT+XLIN
AT+CCFC
AT+CCWA
AT+CHLD
AT+CLCC
AT+CLCK
AT+CLIP
AT+CLIR
AT+CNAP
AT+COLP
AT+COLR
AT+CPWD
AT+CSSN
AT+CUSD
AT+CCUG
AT+CBST
AT+CEER
AT+CGACT
AT+CGANS
AT+CGATT
AT+CGAUTO
AT+CGCLASS
AT+CGCMOD
AT+CGDATA
AT+CGDCONT
AT+CGDSCONT
AT+CGEQMIN
AT+CGEQNEG
AT+CGEQREQ
AT+CGEREP
AT+CGPADDR
AT+CGQMIN
AT+CGQREQ
AT+CGTFT
AT+XCGCLASS
AT+XDNS
AT+XGAUTH
AT+FCLASS
AT+CRLP
AT+XNVMPLMN
AT+XNVMMCC
AT+CBC
AT+CCID
AT+CCLK
AT+CFUN
AT+CGMI
AT+CGMM
AT+CGMR
AT+CGSN
AT+GSN
AT+CIMI
AT+CMEE
AT+CMUX
AT+CNUM
AT+CPIN
AT+CPWROFF
AT+CRSM
AT+CSCS
AT+CSIM
AT+CSVM
AT+CTZR
AT+CTZU
AT+IPR
AT+XCTMS
AT+XGENDATA
AT+XPINCNT
AT+XLOG
AT+XMER
AT+XSIMSTATE
AT+TRACE
AT+XL1SET
AT+XSIO
AT+XDLCTEST
AT+XPOW
AT+XCEER
AT+XEER
AT+XTRACECONFIG
AT+XMUX
AT+XFDOR
AT+XFDORT
AT+XCONFIG
AT+XAPP
AT+XHSDUPA
AT+XCAP
AT+CPIN2
AT+XDATACHANNEL
AT+CONNECTPORT
AT+CAMM
AT+CACM
AT+CCHO
AT+CCHC
AT+XCSP
AT+NEER
AT+CUAD
AT+XUICC
AT+XLEMA
AT+XSYSTRACE
AT+CLAC
AT+CPUC
AT+CLAN
AT+CGLA
AT+CRLA
AT+CPAS
AT+XSVM
AT+XNOTIFYDUNSTATUS
AT+XRXDIV
AT+XRXDIV3GRAB
AT+XMAGETKEY
AT+XMAGETBLOCK
AT+CPOS
AT+CPOSR
AT+CMOLR
AT+CMTLR
AT+CMTLRA
AT+XCPOSR
AT+XSETCAUSE
AT+XSPEECHINFO
OK