Cannot get serial port working on linux (want to send AT command to an USB attached mobile phone)

I run Kali Linux (Debian based distro), and have minicom, socat, and atinout. I attached a Samsung Galaxy phone to USB and want to access it, using AT commands. When I run dmesg, I don't see any port, where the phone is attached to.

[68106.267643] Generic PHY r8169-900:00: attached PHY driver [Generic PHY]   (mii_bus:phy_addr=r8169-900:00, irq=IGNORE)
[68106.393299] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[68106.395577] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[68106.396055] r8169 0000:09:00.0 eth0: Link is Down
[68106.397738] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[68108.498714] r8169 0000:09:00.0 eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[68108.498727] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[68240.791513] usb 1-1: new high-speed USB device number 51 using xhci_hcd
[68240.940501] usb 1-1: New USB device found, idVendor=04e8, idProduct=6860, bcdDevice= 2.16
[68240.940507] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4
[68240.940511] usb 1-1: Product: Galaxy
[68240.940515] usb 1-1: Manufacturer: samsung
[68240.940518] usb 1-1: SerialNumber: 0149xxxxxxxxxxxxx

When I launch tty, I see /dev/pts/6.

If I configure minicom with /dev/pts/6, I get nothing, I try to type AT, but never receive a OK! My phone is rooted and I have USB debugging.

Welcome to minicom 2.7.1
OPTIONS: I18n
Compiled on May  6 2018, 08:02:47.
Port /dev/pts/6, 18:58:41

Press CTRL-A Z for help on special keys

And if I launch in terminal:

echo AT | atinout - /dev/pts/6 -

It prints AT in another terminal, not the one I launched in. And I never receive a OK after my AT.

Any idea? Because I cannot communicate with my phone through AT commands.

tom

Posted 2019-05-30T06:57:12.040

Reputation: 1

1/dev/pts/6 has nothing to do with your phone. It is associated with the terminal (the one you run tty in). In general I would expect a serial port connected via USB to be like /dev/ttyUSB0. – Kamil Maciorowski – 2019-05-30T07:24:32.017

@KamilMaciorowski: yes I know this, but how to get my serial port? Normally it should be displayed in dmesg or listed in tty, but it is not. I don't have any dev/ttyUSB0 neither 1... – tom – 2019-05-30T08:22:15.883

1A USB device that emulates a serial link would have a device node such as /dev/ttyACM0, and require USB CDC/ACM drivers, which may be missing from your system. /dev/ttyUSB0 would be for a USB-to-serial adapter, which is not your phone. Regardless, the phone is detected as a USB device, but there is no device driver that matches the IDs. – sawdust – 2019-05-30T09:03:37.360

@sawdust: I did 'sudo modprobe cdc_acm' but still no effevt; and no "/dev/ttyACM0" – tom – 2019-05-30T11:11:08.617

Cannot get serial port working on linux (want to send AT command to an USB attached mobile phone)

No answers