Android RIL driver for Android 14

[Bean.Wang-Q]

It is normal.
The RIL will use the CMUX and open the /dev/ttyAML6 port.
Which module are you using ?
Can you confirm that the uart port is OK with AT command?
Please provide the log.

[hanuka]

Okay, I use a EC25-EUGA-512-SGNS with the firmware EC25EUGAR06A07M4G.
Yes, the AT commands work if I use UART directly in the adb shell with 115200 baudrate.

[Bean.Wang-Q]

Please provide the log.

logcat -b all

[hanuka]

see this post here above

@hanuka

01-01 00:00:09.115   463   463 D RIL_SERVICE_1_5: RadioImpl_1_5::registerAsService(slot1)
01-01 00:00:09.121   463   496 D MUXD    : MUXD 2687:gsm0710muxd(): gsm0710muxd serialname = /dev/ttyAML6, gsm0710muxd_pid = 0
01-01 00:00:09.129   463   463 D RIL_SERVICE_1_1: status = 0
01-01 00:00:09.129   463   463 I RILC    : RILHIDL called registerService
01-01 00:00:09.129   463   463 D RILD    : RIL_Init RIL_register completed
01-01 00:00:09.129   463   463 D RILD    : RIL_register_socket started
01-01 00:00:09.129   463   463 D RIL_UIM_SOCKET: Adding socket with id: 0
01-01 00:00:09.129   463   463 D RILD    : RIL_register_socket completed
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2528:main(): Quectel CMUX Revision: Quectel_Linux_CMUX_Driver_V2.0.3
01-01 00:00:09.288   511   511 V MUXD    : MUXD 2529:main(): Enter
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2638:main(): Called with following options:
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2639:main(): 	-d: Fork, get a daemon [yes]
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2640:main(): 	-v: Set verbose logging level. 0 (Silent) - 7 (Debug) [6]
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2641:main(): 	-s <serial port name>: Serial port device to connect to [/dev/ttyAML6]
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2642:main(): 	-c <hardware flow control>:  Hardware flow control [disabled]
01-01 00:00:09.288   511   511 D MUXD    : MUXD 2643:main(): 	-t <timeout>: reset modem after this number of seconds of silence [0]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2644:main(): 	-P <pin-code>: PIN code to unlock SIM [-1]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2645:main(): 	-p <number>: use ping and reset modem after this number of unanswered pings [0]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2646:main(): 	-b <baudrate>: mode baudrate [115200]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2647:main(): 	-m <modem>: Mode (basic, advanced) [basic]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2648:main(): 	-f <framsize>: Frame size [127]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2649:main(): 	-n <number of ports>: Number of virtual ports to create, must be in range 1-4 [3]
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2650:main(): 	-o <output log to file>: Output log to /tmp/gsm0710muxd.log [no]
01-01 00:00:09.289   511   511 V MUXD    : MUXD 2271:watchdog(): Enter
01-01 00:00:09.289   511   511 V MUXD    : MUXD 2274:watchdog(): Serial state is 0
01-01 00:00:09.289   511   511 V MUXD    : MUXD 2043:open_serial_device(): Enter
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2050:open_serial_device(): Opened serial port
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2068:open_serial_device(): Configured serial device
01-01 00:00:09.289   511   511 V MUXD    : MUXD 2072:open_serial_device(): Switched Mux state to 1 
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2282:watchdog(): Watchdog started
01-01 00:00:09.289   511   511 D MUXD    : MUXD 2099:start_muxer(): Configuring modem
01-01 00:00:09.289   511   511 V MUXD    : MUXD 1386:chat(): Enter
01-01 00:00:09.289   511   511 V MUXD    : MUXD 732:syslogdump(): >s 00000000: 41 54 0d 0a  .  .  .  .- .  .  .  .  .  .  .  .  AT..
01-01 00:00:09.289   511   511 V MUXD    : MUXD 1393:chat(): Wrote 4 bytes
01-01 00:00:09.289   511   511 V MUXD    : MUXD 1395:chat(): CHAT++++++++++++
01-01 00:00:09.291   511   511 V MUXD    : MUXD 1406:chat(): Selected 1
01-01 00:00:09.391   511   511 V MUXD    : MUXD 1413:chat(): Read 11 bytes from serial device
01-01 00:00:09.391   511   511 V MUXD    : MUXD 732:syslogdump(): <s 00000000: 41 a8 35 ff 0d 14 9e 2d-6a 14 ff  .  .  .  .  .  A�5�..�-j.�
01-01 00:00:09.933   409   409 W HidlServiceManagement: Waited one second for android.hardware.radio.config@1.1::IRadioConfig/default
01-01 00:00:10.115   463   492 D RILC    : dlopen /vendor/lib64/hw/radio.quectel.module.so failed: dlopen failed: library "/vendor/lib64/hw/radio.quectel.module.so" not found
01-01 00:00:10.115   463   492 D RILC    : start the service through api...
01-01 00:00:10.116   463   492 D RILC    : ql_radio_config_init start
01-01 00:00:10.116   463   492 E RadioConfigFactory: '/vendor/manifest.xml' not exist.
01-01 00:00:10.116   463   492 D RadioConfigImpl: RadioConfigImpl()
01-01 00:00:10.116   463   492 D RadioConfigImpl_1_2: RadioConfigImpl_1_2:registerAsService(default)
01-01 00:00:10.118   463   492 D RadioConfigFactory: radio_config_register_service status=0
01-01 00:00:10.118   463   492 D RILC    : ql_radio_config_init finish
01-01 00:00:10.118   463   492 D RILC    : ql_radio_sap_init start
01-01 00:00:10.118   463   492 D RIL_SAP_1_2: ql_radio_sap_init() start.
01-01 00:00:10.119   463   492 D RIL_SAP_1_2: radio_sap_register_service status=0
01-01 00:00:10.119   463   492 D RILC    : ql_radio_sap_init finish
01-01 00:00:10.120   409   409 I radiocompat: Found 1 slot(s)
01-01 00:00:10.122   409   409 I radiocompat: android.hardware.radio.data.IRadioData/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.122   409   409 I radiocompat: android.hardware.radio.messaging.IRadioMessaging/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.123   409   409 I radiocompat: android.hardware.radio.modem.IRadioModem/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.123   409   409 I radiocompat: android.hardware.radio.network.IRadioNetwork/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.123   409   409 I radiocompat: android.hardware.radio.sim.IRadioSim/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.123   409   409 I radiocompat: android.hardware.radio.voice.IRadioVoice/slot1 is not declared in VINTF (this may be intentional)
01-01 00:00:10.124   409   409 D radiocompat: Radio HAL compat service is operational
01-01 00:00:10.390   511   511 V MUXD    : MUXD 1406:chat(): Selected 0
01-01 00:00:10.390   511   511 W MUXD    : MUXD 2104:start_muxer(): Modem does not respond to AT commands, trying close mux mode
01-01 00:00:10.390   511   511 V MUXD    : MUXD 758:write_frame(): write_frame Enter
01-01 00:00:10.390   511   511 V MUXD    : MUXD 766:write_frame(): Sending frame to channel 0
01-01 00:00:10.390   511   511 V MUXD    : MUXD 732:syslogdump(): >s 00000000: f9 03 c3 01 40 f9  .  .- .  .  .  .  .  .  .  .  �.�.@�
01-01 00:00:10.390   511   511 V MUXD    : MUXD 810:write_frame(): Leave
01-01 00:00:10.390   511   511 V MUXD    : MUXD 758:write_frame(): write_frame Enter
01-01 00:00:10.390   511   511 V MUXD    : MUXD 766:write_frame(): Sending frame to channel 0
01-01 00:00:10.391   511   511 V MUXD    : MUXD 732:syslogdump(): >s 00000000: f9 03 ef 05 c3 01 f2 f9- .  .  .  .  .  .  .  .  �.�.�.��
01-01 00:00:10.391   511   511 V MUXD    : MUXD 810:write_frame(): Leave
01-01 00:00:10.391   511   511 V MUXD    : MUXD 1386:chat(): Enter
01-01 00:00:10.391   511   511 V MUXD    : MUXD 732:syslogdump(): >s 00000000: 41 54 0d 0a  .  .  .  .- .  .  .  .  .  .  .  .  AT..
01-01 00:00:10.391   511   511 V MUXD    : MUXD 1393:chat(): Wrote 4 bytes
01-01 00:00:10.391   511   511 V MUXD    : MUXD 1395:chat(): CHAT++++++++++++
01-01 00:00:11.392   511   511 V MUXD    : MUXD 1406:chat(): Selected 0
01-01 00:00:11.392   511   511 V MUXD    : MUXD 1386:chat(): Enter
01-01 00:00:11.392   511   511 V MUXD    : MUXD 732:syslogdump(): >s 00000000: 41 54 0d 0a  .  .  .  .- .  .  .  .  .  .  .  .  AT..
01-01 00:00:11.392   511   511 V MUXD    : MUXD 1393:chat(): Wrote 4 bytes
01-01 00:00:11.392   511   511 V MUXD    : MUXD 1395:chat(): CHAT++++++++++++

[Bean.Wang-Q]

This is not what I needed.

Please also check

ps -elf | grep ril

[hanuka]

this is the ps -elf output

radio          463     1 0 14:45:38 ?     00:00:01 rild -l /vendor/lib64/hw/libquectel-ril.so -- -d /dev/ttyAML6 -B 115200
root          2933  2931 16 15:08:06 pts/0 00:00:00 grep ril

[Bean.Wang-Q]

Please provide the complete log.

[Bean.Wang-Q]

If you need CMUX, the RTS pin must be low.

[hanuka]

here’s the full log including boot up

LogUartRil.txt (253.4 KB)

[hanuka]

Do I have to set it to GND or can it be left floating?

[hanuka]

Here’s what I see on the TX/RX lines (upper one is TX, lower one is RX). The modem is answering the first AT command but not the second command.

[Bean.Wang-Q]

The main uart of the EC25 has bugs, if you want to use the CMUX, the RTS pin should be low.

[hanuka]

I tried that but it didn’t change anything – what about CTS/DTR and so on?

[hanuka]

I finally got the communication running!
There has been indeed a connection issue and now it works – thanks for your help!

I now ran into a different problem though. I see that after it tries to dial up, the RIL driver sends the modem to sleep mode (AT+QSCLK=1) from which it never wakes up again. Is it somehow possible to disable the sleep mode in the driver?

[Bean.Wang-Q]

Yes. Did you pull the RTS down?
By default it send the command AT+QSLCK=1 and that may block the modem to sleep.

[hanuka]

Yes, I pulled it permanently to ground.
Yes, I see that and this is a problem for our application, because we still want to communicate with the modem sing AT commands.
Is there a way to disable the sleep command in the RIL driver? or how can the UART be enabled/ woken up again if needed?