Difference between revisions of "USB Host"
From ArmadeusWiki
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sysfs on /sys type sysfs (rw) | sysfs on /sys type sysfs (rw) | ||
/dev/sda1 on /mnt/usbdisk type msdos (rw,fmask=0022,dmask=0022,codepage=cp437) | /dev/sda1 on /mnt/usbdisk type msdos (rw,fmask=0022,dmask=0022,codepage=cp437) | ||
| + | |||
| + | == USB <--> Serial adapters == | ||
| + | * See [[USB_to_serial_adapter]] | ||
| + | |||
| + | == USB <--> WiFi adapters == | ||
| + | * See [[USB_to_WiFi_adapter]] | ||
= Links = | = Links = | ||
Revision as of 19:15, 16 December 2008
How-To use the USB Host functionnality of Armadeus boards under Linux.
Contents
Controller
To use USB devices on your Armadeus board, you will need to have a USB Host controller on your development board.
- With an APF9328, only the DevFull has this functionnality. It is equipped with a USB 2.0 Host controller featuring three USB high speed ports.
- On APF27 all the development boards will have at least 2 USB hosts (controllers are integrated in the i.MX27 processor).
Using USB devices
USB keyboard/mouse (HID: Human Interface Device)
Driver installation
- Add USB keyboard/mouse support in Linux:
$ make linux26-menuconfig
select Device Drivers ---> [*] HID Devices ---> <*> Generic HID support (static) select Device Drivers ---> [*] HID Devices ---> <M> USB Human Interface Device (full HID) support (module)
Starting the driver
# modprobe usbhid
Plug the keyboard
- you should see on console (for example):
usb 1-1.1: new low speed USB device using isp1761 and address 3 usb 1-1.1: configuration #1 chosen from 1 choice input: NOVATEK USB Keyboard as /class/input/input0 input: USB HID v1.10 Keyboard [NOVATEK USB Keyboard] on usb-platform-1.1 input: NOVATEK USB Keyboard as /class/input/input1 input: USB HID v1.10 Mouse [NOVATEK USB Keyboard] on usb-platform-1.1
- To change keyboard keymap (by default us one):
# loadkmap < /etc/i18n/fr.kmap
Plug the mouse
- you should see on console (for example):
usb 1-1.2: new low speed USB device using isp1761 and address 6 usb 1-1.2: configuration #1 chosen from 1 choice input: Logitech USB-PS/2 Optical Mouse as /class/input/input6 input: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-platform-1.2
USB Flash memory / USB key / USB card reader / USB Hard Drive
Driver installation
- Add USB Flash support in Linux:
$ make linux26-menuconfig
select Device Drivers ---> SCSI device support ---> <*> SCSI device support (static) select Device Drivers ---> SCSI device support ---> [*] legacy /proc/scsi/ support (static) select Device Drivers ---> SCSI device support ---> <*> SCSI disk support (static)
select Device Drivers ---> [*] USB support ---> [*] USB device filesystem (static) select Device Drivers ---> [*] USB support ---> <*> USB Mass Storage support (static)
Plug the device
- You should see (for example):
usb 1-1.2: new high speed USB device using isp1761 and address 6 usb 1-1.2: configuration #1 chosen from 1 choice scsi0 : SCSI emulation for USB Mass Storage devices usb 1-1.2: reset high speed USB device using isp1761 and address 6 scsi 0:0:0:0: Direct-Access Hama Card Reader CF 1.9C PQ: 0 ANSI: 0 CCS sd 0:0:0:0: [sda] Attached SCSI removable disk
Additional configuration
- If /dev/sdaX does not exist, then create it:
# mknod /dev/sda b 8 0 # mknod /dev/sda1 b 8 1 # mknod /dev/sda2 b 8 2
- Create a mount directory "usbdisk"
# mkdir -m 777 /mnt/usbdisk
Mount the device
- Mount the USB Mass Storage device
# mount -t vfat /dev/sda1 /mnt/usbdisk
- Check what is present on the USB Mass Storage device:
# ls -al /mnt/usbdisk
- And if it is well mounted (for example):
# mount rootfs on / type rootfs (rw) /dev/root on / type jffs2 (rw) proc on /proc type proc (rw) devpts on /dev/pts type devpts (rw) tmpfs on /tmp type tmpfs (rw) sysfs on /sys type sysfs (rw) /dev/sda1 on /mnt/usbdisk type msdos (rw,fmask=0022,dmask=0022,codepage=cp437)
USB <--> Serial adapters
USB <--> WiFi adapters
Links
- Any links ?
