| Latest revision |
Your text |
| Line 4: |
Line 4: |
| | | | |
| | ==Status== | | ==Status== |
| - | USB Host mode has reached beta status, and is working reliably with manual speed switching. | + | The current status is that USB Host mode is not reliable, even for those involved in development. |
| | + | It can work, see [http://talk.maemo.org/showpost.php?p=656408&postcount=852 this post by egoshin on talk.maemo.org]. Who has succeeded in mounting a USB stick using an externally powered hub. |
| | + | |
| | + | However, this is using the partially implemented [http://en.wikipedia.org/wiki/USB_On-The-Go OTG] driver, and confusing it into thinking it's talking to a OTG device in device mode. |
| | | | |
| - | Proper host mode would only require the normal cable, and a commonly available adapter. ([http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250641334947 USB A-A adaptor]) Or maybe you like to get a fitting all-in-one small adapter, or make one fit ([http://talk.maemo.org/showthread.php?p=873725#post873725 N8 OTG adapter rework]). Huge rigid adapters are STRONGLY DEPRECATED, regarding the notorious problems with USB receptacle coming off the PCB.
| + | This remains unreliable, and an implementation of host mode is likely to be much more stable. |
| | | | |
| - | A pre-alpha of hostmode was released on the 23rd of September, here: http://talk.maemo.org/showthread.php?p=824298
| + | Proper host mode would only require the normal cable, and a commonly available adapter. ([http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250641334947 USB A-A adaptor]) |
| | | | |
| - | This release is unreliable, and an implementation of proper host mode is likely to be much more stable.
| + | A user friendly implementation that makes it easy to use host mode is some way off. |
| - | | + | |
| - | A beta release, based on Paul's completely rewritten patches (see h-e-n's garage repository) was released on the 7th of November, and is the closest release yet to proper hostmode, http://talk.maemo.org/showthread.php?t=65232
| + | |
| | | | |
| | There are several parts to getting USB host mode working for normal users. | | There are several parts to getting USB host mode working for normal users. |
| Line 18: |
Line 19: |
| | Some of these are quite easy, many are not. | | Some of these are quite easy, many are not. |
| | | | |
| - | * Kernel modifications to make USB host work properly [done, thanks to Paul] | + | * Kernel modifications to make USB host work properly. |
| | + | |
| | + | This is the part of the project that's holding everything else up - it's stalled. |
| | | | |
| | * USB modules for supporting hardware. This is fairly simple for most hardware - some hardware modules will not compile cleanly on ARM, and binary drivers that allow you to use windows drivers with some stuff will never work. | | * USB modules for supporting hardware. This is fairly simple for most hardware - some hardware modules will not compile cleanly on ARM, and binary drivers that allow you to use windows drivers with some stuff will never work. |
| Line 34: |
Line 37: |
| | When an external power supply is found, the following should be done in sequence. | | When an external power supply is found, the following should be done in sequence. |
| | | | |
| - | *If the supply is a charger (D+,D- short, detected by the 1707a), fast charge.
| |
| - | *Attempt to enumerate as a device, if this succeeds (including handling of suspended busses), then enumerate and charge as a device, respecting the enumerated current.
| |
| - | *If both enumeration as a device and charger detection have failed, we may be plugged into a hub or device with reverse power. Attempt to enumerate connected devices (=hostmode. Will not work due to [probably hardware] limitations in hostmode, which block speed selection after VBUS got applied). Charge at user-defined maximum current. For example - may be a 500mA power supply also supplying the hub and a keyboard = 2 unit loads - max draw = 300mA. Anyway see http://talk.maemo.org/showthread.php?p=921203#post921203 for actually powering N900 from external supply during hostmode. Implementation of this feature to h-e-n GUI still pending.
| |
| - |
| |
| - | ==Installation==
| |
| - | Install hostmode-gui from -devel, kernel-power will be installed if no other compatible kernel is present.
| |
| - |
| |
| - | '''apt-get install hostmode-gui'''
| |
| - |
| |
| - | [Update]
| |
| - |
| |
| - | "The most recent h-e-n pkg itself should come '''without any kernel''' now (just the GUI), however, it does depend on kernel-feature-usbhost, so any kernel providing that works, if no kernel is installed, kernel-power will be installed, and - as mentioned in a previous post - h-e-n doesn't plan to ship any dedicated hostmode kernels anymore.
| |
| - | The GUI will check if a compatible API is present (as per /proc/driver/musb_hdrc), and will notify to user if problems are detected (with hostmode support in whatever is the currently installed kernel).
| |
| - |
| |
| - | Of course a mere update of h-e-n pkg won't magically switch from h-e-n hostmode kernel to power kernel. You have to care for that yourself."
| |
| - |
| |
| - | ==Usage==
| |
| - |
| |
| - | A help window is available and will guide you through the steps needed.
| |
| - | The mount button currently executes a script that reads /proc/partitions and mounts all devices there on /media/<partition_number>.
| |
| - | The script will also modprobe ntfs and isofs (if /dev/sr0 is present), it will also create a temporary symlink (/dev/dvd) so mplayer works without any modifications (a package with DVD support compiled is needed)
| |
| - | Disabling tracker by adding /media/<partition_name> to tracker-cfg's non watch configuration is HIGHLY recommended, use tracker-cfg UI.
| |
| - |
| |
| - | == Devices ==
| |
| - | You can plug-in almost anything into a usb port of the n900. However, many devices require a special driver in order to work. The custom kernel already provides basic drivers for devices such as:
| |
| - |
| |
| - | * USB Storage(cd-roms, flash drives, hdd, etc)
| |
| - | * USB HID(Keyboards, mice, joysticks, touchpads, etc)
| |
| - |
| |
| - | == Demos ==
| |
| - | * http://www.youtube.com/watch?v=zDzUG-bno6Q by MohammadAG (usb CD-ROM)
| |
| - | * http://www.youtube.com/watch?v=6ED92orZLMM by divan0 (usb flash drive)
| |
| - | * http://www.youtube.com/watch?v=1Qfx_jaQ9jo by divan0 (usb HDD via usbhub)
| |
| - | * http://www.youtube.com/watch?v=ua5xpTZJpwo by divan0 (usb mouse)
| |
| - | * http://www.youtube.com/watch?v=9byE_qTl15M by divan0 (usb keyboard)
| |
| - | * http://www.youtube.com/watch?v=0YPk4Y0ZPQY by divan0 (usb card reader)
| |
| - | * http://www.youtube.com/watch?v=3IyeSNGCWTA by divan0 (usb Ethernet adapter)
| |
| - | * http://www.youtube.com/watch?v=AUjbFi3-GpA by davidxfoo (USB I2C Sonar SRF08)
| |
| - |
| |
| - | ==Hostmode development team:==
| |
| - |
| |
| - | '''Project Admins:'''
| |
| - | *Joerg Reisenweber
| |
| - | *Paul Fertser
| |
| - |
| |
| - | '''Developers:'''
| |
| - | *Chitrang Srivastava
| |
| - | *Dave na
| |
| - | *Hagen Meyer
| |
| - | *Ian Stirling
| |
| - | *Jacek Milewicz
| |
| - | *Klaus Kurzmann
| |
| - | *Mohammad Abu-Garbeyyeh
| |
| - | *Mugur Enache
| |
| - | *Sarah Newman
| |
| - | *Sonny Jim
| |
| - | *Tom Tanner
| |
| | | | |
| - | Most information is taken from [http://talk.maemo.org/showthread.php?t=65232 this thread] created by MohammadAG
| + | * If the supply is a charger (D+,D- short, detected by the 1707a), fast charge. |
| | + | * Attempt to enumerate as a device, if this succeeds (including handling of suspended busses), then enumerate and charge as a device, respecting the enumerated current. |
| | + | * If enumeration as a device, and charger detection have failed, we may be plugged into a hub or device with reverse power. Attempt to enumerate connected devices. Charge at user-defined maximum current. For example - may be a 500mA power supply also supplying the hub and a keyboard = 2 unit loads - max draw = 300mA. |
| | | | |
| | [[category:N900_Hardware]] | | [[category:N900_Hardware]] |
