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I have a board with an embedded system that is buildroot based. In "make linux-menuconfig" I would like to add the appropriate drivers for the USB-RS232 adapter "Moxa UPORT 1110". I marked in "make linux-menuconfig":

Device Drivers-> USB support -> USB Serial Converter support-> USB MoxaUPORT Serial Driver

after connecting the adapter with the device, linux will not recognize the device.

When I check "lsusb" I get:

lsusb
Bus 001 Device 006: ID 110a:1110
Bus 001 Device 001: ID 1d6b:0002

The board does not see the producer's name etc. On my Ubuntu computer I get after plugging in usb and typing "lsusb ::

Bus 001 Device 036: ID 110a:1110 Moxa Technologies Co., Ltd.

When I check dmesg after plugging in the USB and see:

[ 9752.822985] usb 1-1: USB disconnect, device number 5
[ 9754.605939] usb 1-1: new full-speed USB device number 6 using musb-hdrc
[ 9754.768212] usb 1-1: New USB device found, idVendor=110a, idProduct=1110
[ 9754.775263] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 9754.782783] usb 1-1: Product: UPort 1110
[ 9754.786903] usb 1-1: Manufacturer: Moxa Technologies Co., Ltd.

should I check any additional settings / drivers in "make linux-menuconfig" to see the USB-R232 adapter?

Ezra Bühler
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Creatorczyk
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1 Answers1

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From looking at the Linux source code, I understand that you enabled the mxuport driver which does not cover the UPORT 1110. However, it looks like the ti_usb_3410_5052 driver does. You can enable it by setting CONFIG_USB_SERIAL_TI.

In the Buildroot sources I see that you must make sure that BR2_PACKAGE_LINUX_FIRMWARE_USB_SERIAL_TI is set in order to include the firmware file (moxa-1110.fw).

So, in make menuconfig enable USB TI 3410/5052 Serial Firmware under Target packages > Hardware handling > Firmware > linux-firmware > USB to Serial Firmware

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Ezra Bühler
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  • When I used "lsmod" i get only "ipv6". In buildroot "make linux-menuconfig" i found and set variable "CONFIG_USB_SERIAL_TI" but I cant find "BR2_PACKAGE_LINUX_FIRMWARE_USB_SERIAL_TI" in "make menuconfig". Do you know whats the path to set this variable? I have to use GUI, I cant use something like nano. – Creatorczyk Feb 12 '21 at 14:30
  • I've extended my answer. – Ezra Bühler Feb 14 '21 at 09:06
  • Unfortunately, the path you have provided "Target packages > Hardware handling > Firmware > linux-firmware > USB to Serial Firmware" is not any "USB to Serial Firmware". I found similar one in "Device Drivers > USB support > USB Serial Converter support > USB TI 3410/5052 Serial Driver ", but still doesn't bind moxa to the USB port. I noticed that after connecting the cable to the port, the "Active" LED does not light up. When I connect to another computer, it starts to glow. I tried to plug in another USB-RS232 cable to my port and it detects it – Creatorczyk Feb 19 '21 at 12:48
  • I've added some screenshots. Which version of Buildroot are you using? – Ezra Bühler Feb 19 '21 at 17:03