Difference between revisions of "Mounting an USB drive on the DM365 Leopard Board"
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Revision as of 09:43, 6 June 2011
LeopardBoard 365 USB Host Examples
USB Host Hardware Setup
Leopardboard v1.3 and newer supports USB device mode and host mode. The hardware ships from the factory set to device mode.
For host mode, you need to make sure J1 and J4 are set properly. These jumpers are located on the opposite side of the board as the USB connector. For host mode, install a jumper on J1 pins 1 and 2. On J4, jumper pins 2 and 3. J4 pin 3 is the pin closest to R31.
When J2 pins 1 and 2 are jumpered then the Leopardboard powers the USB VBUS, so the USB device connected to the Leopardboard will have power.
When J4 pins 2 and 3 are jumpered, the USB ID signal is pulled low.
To use common USB devices, a USB A Female to Mini B Male converter is needed.
USB Mass Storage Device Example
In order to do this an USB A Female to Mini B Male converter is needed. Connect the converter to the board and then the USB drive to the A female side. The USB drive mounting point will be /dev/sda1 so in order to explore the drive contents the following commands must be executed on the target:
cat /proc/partitions mkdir /tmp/drive mount /dev/sda1 /tmp/drive mount cd /tmp/drive ls
Plug in the USB mass storage device:
usb 1-1: new high speed USB device using musb_hdrc and address 2 usb 1-1: configuration #1 chosen from 1 choice scsi0 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 2 usb-storage: waiting for device to settle before scanning scsi 0:0:0:0: Direct-Access Memorex TD Classic 003C 1.04 PQ: 0 ANSI: 0 CCS sd 0:0:0:0: [sda] 501760 512-byte logical blocks: (256 MB/245 MiB) sd 0:0:0:0: [sda] Write Protect is off usb-storage: device scan complete sd 0:0:0:0: [sda] Mode Sense: 23 00 00 00 sd 0:0:0:0: [sda] Assuming drive cache: write through device: 'sda': device_add sd 0:0:0:0: [sda] Assuming drive cache: write through sda: sda1 sd 0:0:0:0: [sda] Assuming drive cache: write through sd 0:0:0:0: [sda] Attached SCSI removable disk
Output when running the suggested commands:
/ # cat /proc/partitions major minor #blocks name 31 0 3968 mtdblock0 31 1 128 mtdblock1 31 2 4480 mtdblock2 31 3 204800 mtdblock3 8 0 250880 sda 8 1 250864 sda1 / # mkdir /tmp/drive / # mount /dev/sda1 /tmp/drive / # mount rootfs on / type rootfs (rw) /dev/root on / type nfs (rw,noatime,vers=2,rsize=4096,wsize=4096,namlen=255,hard,nolock,proto=udp,port=65535,timeo=11,retrans=3,sec=sys,addr=10.111.0.4) proc on /proc type proc (rw,relatime) none on /sys type sysfs (rw,relatime) none on /tmp type tmpfs (rw,relatime) none on /var type tmpfs (rw,relatime) none on /dev type tmpfs (rw,relatime) devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620) /dev/sda1 on /tmp/drive type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,errors=remount-ro) / # cd /tmp/drive /tmp/drive # ls dvflashutils normal-123-nand