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AM4378: USB storage devices not accessible on GP EVM

Dhara Pandya
Expert 1220 points

Other Parts Discussed in Thread: TMDSEVM437X, AM4376

Hi,

I want to read and write the data on pendrive by mounting it on my TI Sitara Evaluation Board with TI AM4376 processor- TMDSEVM437X (www.ti.com/.../tmdsevm437x)

I tried with the commands fdisk -l and other command as in this reference link (linuxconfig.org/howto-mount-usb-drive-in-linux   )

But I am not able to see/ access any files in the directory created to mount the USB device. Can anybody help with this..? 

Thanks in advance.

Dhara.

  • 0
    TI__Guru**** 393215 points
    Hi,

    To which USB port do you connect the pendrive?
    What software are you running on the EVM? Which version?
    What is the pendrive model and manufacturer?
  • 0 in reply to Biser Gatchev-XID
    Expert 1220 points

    Hi,

    I am connecting pendrive to USB#1 port on the EVM (TMDSEVM437X).

    I have installed Linux SDK available from this link (software-dl.ti.com/.../index_FDS.html)
    "ti-processor-sdk-linux-am437x-evm-04.00.00.04-Linux-x86-Install.bin"

    I tried with 2 pendirve, but how would this matter in the detection of pendrive on EVM..??
    SMI Corporation, 8GB pendrive (FAT32)
    SWIVEL, 4GB pendirve (FAT32)

    Thanks,
    Dhara

  • 0 in reply to Dhara Pandya
    TI__Guru**** 393215 points
    Please try on USB1 (USB Type A connector, J13). USB0 is configured as OTG port by default. USB1 is Host port.
  • 0 in reply to Biser Gatchev-XID
    Expert 1220 points
    Hi,

    Sorry, my mistake with the previous post, I am already trying on USB port#1 only. J13- Tpye A USB port.

    When I create a mount point in EVM and mount USB on that directory, its empty. I do have some files in the pendrive to verify if I able to read those file after mounting it on the directory created.

    But is there any significance of knowing the manufacturer of pendrive, if its not getting detected on EVM..?

    Thanks,
    Dhara
  • 0 in reply to Dhara Pandya
    Expert 1220 points
    Hi,
    Any reason or suggestions why pendrive is not getting mount..??


    Thanks,
    Dhara
  • 0 in reply to Dhara Pandya
    TI__Guru**** 182316 points
    Dhara,

    Please provide the following information.

    1. the full dmesg log after the pendrive is attached;
    2. the commands and logs showing how you mount and checked the pendrive.
  • 0 in reply to Bin Liu
    Expert 1220 points

    Hi,

    Find the attached log file when I try to mount the pen-drive on EVM. 

    Fullscreen 0636.usb_mount_log.txt Download 
    root@am437x-evm:/# [18297.761272] usb 1-1: new high-speed USB device number 9 using xhci-hcd
[18297.903143] usb 1-1: New USB device found, idVendor=090c, idProduct=1000
[18297.909912] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[18297.917147] usb 1-1: Product: USB DISK
[18297.920932] usb 1-1: Manufacturer: SMI Corporation
[18297.931494] usb 1-1: ep 0x81 - rounding interval to 128 microframes, ep desc says 255 microframes
[18297.940459] usb 1-1: ep 0x2 - rounding interval to 128 microframes, ep desc says 255 microframes
[18297.958416] usb-storage 1-1:1.0: USB Mass Storage device detected

root@am437x-evm:/var/log# fdisk -l

Disk /dev/mmcblk0: 7.4 GiB, 7948206080 bytes, 15523840 [19081.613660] end_request: I/O error, dev mtdblock0, sector 0
[19081.620915] Buffer I/O error on device mtdblock0, logical block 0
sectors
Units: sectors of 1 * 512 = 512 bytes
Se[19081.629109] end_request: I/O error, dev mtdblock0, sector 0
[19081.638347] Buffer I/O error on device mtdblock0, logical block 0
ctor size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device         Boot     Start       End  Blocks  Id System
/dev/mmcblk0p1 *           63    144584   72261   c W95 FAT32 (LBA)
/dev/mmcblk0p2         160650   4980149 2409750  83 Linux
/dev/mmcblk0p3        4980150  15518789 5269320  83 Linux

fdisk: cannot open /dev/mtdblock0: Input/output error
root@am437x-evm:/var/log# mount -t /dev/mmcblk0p1 /home/root/usb_mmc_mnt/
mount: can't find /home/root/usb_mmc_mnt/ in /etc/fstab
root@am437x-evm:/var/log# mount -t vfat /dev/mmcblk0p1 /home/root/usb_mmc_mnt/                                                                 
mount: mounting /dev/mmcblk0p1 on /home/root/usb_mmc_mnt/ failed: Device or resource busy
root@am437x-evm:/var/log# cd /home/root/usb_mmc_mnt/
root@am437x-evm:~/usb_mmc_mnt# ls

  • 0 in reply to Dhara Pandya
    TI__Guru**** 182316 points
    The log shows the pendrive VID:PID is 090c:1000, this device doesn't fully comply to the MSC protocol. Can you please try different pendrives?