Editing N900 Hardware USB Host
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==Status== | ==Status== | ||
- | USB Host mode has | + | 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. | ||
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+ | 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. | ||
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+ | This remains unreliable, and an implementation of host mode is likely to be much more stable. | ||
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. | 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. | ||
- | A | + | A user friendly implementation that makes it easy to use host mode is some way off. |
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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. | ||
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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 | + | * Kernel modifications to make USB host work properly. |
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+ | 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. |
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