I can't connect jetson nano to arduino

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

lsusb -vvv

Bus 001 Device 007: ID 2341:0042 Arduino SA Mega 2560 R3 (CDC ACM)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            2 Communications
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x2341 Arduino SA
  idProduct          0x0042 Mega 2560 R3 (CDC ACM)
  bcdDevice            0.01
  iManufacturer           1 Arduino (www.arduino.cc)
  iProduct                2 (error)
  iSerial               220 9593132393135151F190
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              0 
      CDC Header:
        bcdCDC               10.01
      CDC ACM:
        bmCapabilities       0x06
          sends break
          line coding and serial state
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval             255
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x04  EP 4 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
Device Status:     0x0000
  (Bus Powered)

dmesg --follow

[ 2902.653568] usb 1-2.1: new full-speed USB device number 8 using tegra-xusb
[ 2902.677667] usb 1-2.1: New USB device found, idVendor=2341, idProduct=0042
[ 2902.677675] usb 1-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=220
[ 2902.677679] usb 1-2.1: Manufacturer: Arduino (www.arduino.cc)
[ 2902.677682] usb 1-2.1: SerialNumber: 9593132393135151F190

no ttyusb or ttyacm

what is the problem

2

Also check your arduino side… This kind of interface requires both side to support.

If Arduino lacks some driver, then those interface won’t appear…

3

I found my problem. My cdc_acm version(4.4.13-tegra) and my system version(4.9.253-tegra) were different. I reinstalled with SD card.https://developer.nvidia.com/embedded/learn/get-started-jetson-nano-devkit#write
My current versions

~$ uname -r
4.9.253-tegra
/sbin$ modinfo cdc_acm
.
.
.
vermagic:       4.9.253-tegra SMP preempt mod_unload modversions aarch64
4

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