USB OTG - Revision history

JulienB: /* Usage */

2017-03-31T12:29:19Z

Usage

← Older revision		Revision as of 14:29, 31 March 2017
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	== Usage ==		== Usage ==

	In order to activate the OTG mode, no specific mode should ~~not~~ be enforced by the U-Boot ''otg_mode'' bootargs parameter:		In order to activate the OTG mode, no specific mode should be enforced by the U-Boot ''otg_mode'' bootargs parameter:
	<pre class="apf">		<pre class="apf">
	BIOS> setenv extrabootargs		BIOS> setenv extrabootargs

JulienB: /* Usage */

2015-04-23T09:51:57Z

Usage

← Older revision		Revision as of 11:51, 23 April 2015
Line 15:		Line 15:
	== Usage ==		== Usage ==

	In order to activate the OTG mode, no specific mode should not be enforced by the U-Boot otg_mode parameter:		In order to activate the OTG mode, no specific mode should not be enforced by the U-Boot ''otg_mode'' bootargs parameter:
	<pre class="apf">		<pre class="apf">
	BIOS> setenv extrabootargs		BIOS> setenv extrabootargs
Line 24:		Line 24:
	Your port is now ready to act as an USB OTG connector under linux. Once you have loaded your preferred gadget driver, you are ready to connect and use at any time an USB device or a host PC without rebooting the board to use the USB OTG feature.		Your port is now ready to act as an USB OTG connector under linux. Once you have loaded your preferred gadget driver, you are ready to connect and use at any time an USB device or a host PC without rebooting the board to use the USB OTG feature.
	* Please check the [[USB_Gadget#Usage\| USB Gadget usage]] for a step by step procedure.		* Please check the [[USB_Gadget#Usage\| USB Gadget usage]] for a step by step procedure.
	* How to use all the possible USB devices on your board can be found on the [[USB_Host#Using_USB_device \| USB Host usage page]]		* How to use all the possible USB devices on your board can be found on the [[USB_Host#Using_USB_device \| USB Host usage page]]

	== Known issues ==		== Known issues ==

JulienB: /* Requirements */

2015-04-23T09:50:42Z

Requirements

← Older revision		Revision as of 11:50, 23 April 2015
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	* [[APF28Dev]] board (since revision 2 of the board == with the USB mini-AB connector),		* [[APF28Dev]] board (since revision 2 of the board == with the USB mini-AB connector),
	* [[APF6Dev]]		* [[APF6Dev]]
	We also have plan to support this feature on the [[~~AFP51Dev~~]], as soon as some project members can start this development.		We also have plan to support this feature on the [[APF51Dev]], as soon as some project members can start this development.

	== Usage ==		== Usage ==

JulienB: /* Requirements */

2015-04-23T09:50:29Z

Requirements

← Older revision		Revision as of 11:50, 23 April 2015
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	== Requirements ==		== Requirements ==

	The USB OTG is available ~~with~~ the [[~~AFP28Dev~~]] board since the board ~~revision 2~~ with the ~~connector~~ USB mini-AB.		The USB OTG is available on the:
	We have ~~the~~ plan to support this feature ~~also~~ on the [[AFP51Dev]] as soon as some project members can start this development.		* [[APF28Dev]] board (since revision 2 of the board == with the USB mini-AB connector),
			* [[APF6Dev]]
			We also have plan to support this feature on the [[AFP51Dev]], as soon as some project members can start this development.

	== Usage ==		== Usage ==

JulienB: /* Introduction */

2015-04-23T09:48:18Z

Introduction

← Older revision		Revision as of 11:48, 23 April 2015
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	== Introduction ==		== Introduction ==

	The USB OTG feature ~~let~~ you use the ~~connector~~ USB Mini-AB to connect at any time a [[~~USB_Gadget \|device~~]] ~~to your board~~ or to connect your ~~board~~ to a [[~~USB_Host~~ \|~~host PC~~]] ~~without enforcing any~~ of ~~these two modes~~.		The USB OTG feature allows you to use the USB Mini-AB connector of your APFDev board to connect at any time a USB device (by acting as a [[USB Host]]) or to connect your system to your Host PC and be seen as a [[USB_Gadget \|USB device (gadget)]]. OTG is automatically doing the right mode selection depending on the cable you are connecting to the APFDev OTG connector.
			This of course require that the cable your are using is OTG compatible. Otherwise you may end up continuing to force the OTG connector mode manually.

	== Requirements ==		== Requirements ==

JulienB at 09:38, 23 April 2015

2015-04-23T09:38:14Z

← Older revision		Revision as of 11:38, 23 April 2015
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	How to use the USB On The Go (OTG) of the Armadeus boards under Linux-		How to use the USB On The Go (OTG) port of the Armadeus boards under Linux.

	= Introduction =		== Introduction ==

	The USB OTG feature let you use the connector USB Mini-AB to connect at any time a [[USB_Gadget \|device]] to your board or to connect your board to a [[USB_Host \|host PC]] without enforcing any of these two modes.		The USB OTG feature let you use the connector USB Mini-AB to connect at any time a [[USB_Gadget \|device]] to your board or to connect your board to a [[USB_Host \|host PC]] without enforcing any of these two modes.

	= Requirements =		== Requirements ==

	The USB OTG is available with the [[AFP28Dev]] board since the board revision 2 with the connector USB mini-AB.		The USB OTG is available with the [[AFP28Dev]] board since the board revision 2 with the connector USB mini-AB.
	We have the plan to support this feature also on the [[AFP51Dev]] as soon as some project members can start this development.		We have the plan to support this feature also on the [[AFP51Dev]] as soon as some project members can start this development.

	= Usage =		== Usage ==

	In order to activate the OTG mode, no specific mode should not be enforced by the U-Boot otg_mode parameter:		In order to activate the OTG mode, no specific mode should not be enforced by the U-Boot otg_mode parameter:
Line 23:		Line 23:
	* How to use all the possible USB devices on your board can be found on the [[USB_Host#Using_USB_device \| USB Host usage page]]		* How to use all the possible USB devices on your board can be found on the [[USB_Host#Using_USB_device \| USB Host usage page]]

	= Known ~~issue~~ =		== Known issues ==
	You can use USB mini A male - USB A female adapter to connect regular USB peripherals to your board with the following limitation:		You can use USB mini A male - USB A female adapter to connect regular USB peripherals to your board with the following limitation:
	* Connect first the USB device to the adaptor before connecting them to the board.		* Connect first the USB device to the adaptor before connecting them to the board.
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	This is a limitation of current implementation on the 2.6.35 linux USB drivers		This is a limitation of current implementation on the 2.6.35 linux USB drivers

	= Links =		== Links ==

	* http://www.usb.org/developers/onthego/		* http://www.usb.org/developers/onthego/

Jorasse: New page: How to use the USB On The Go (OTG) of the Armadeus boards under Linux- = Introduction = The USB OTG feature let you use the connector USB Mini-AB to connect at any time a [[USB_Gadget |d...

2012-10-15T11:41:40Z

New page: How to use the USB On The Go (OTG) of the Armadeus boards under Linux- = Introduction = The USB OTG feature let you use the connector USB Mini-AB to connect at any time a [[USB_Gadget |d...

New page

How to use the USB On The Go (OTG) of the Armadeus boards under Linux-

= Introduction =

The USB OTG feature let you use the connector USB Mini-AB to connect at any time a [[USB_Gadget |device]] to your board or to connect your board to a [[USB_Host |host PC]] without enforcing any of these two modes.

= Requirements =

The USB OTG is available with the [[AFP28Dev]] board since the board revision 2 with the connector USB mini-AB.
We have the plan to support this feature also on the [[AFP51Dev]] as soon as some project members can start this development.

= Usage =

In order to activate the OTG mode, no specific mode should not be enforced by the U-Boot otg_mode parameter:
<pre class="apf">
BIOS> setenv extrabootargs
BIOS> saveenv
BIOS> boot
</pre>

Your port is now ready to act as an USB OTG connector under linux. Once you have loaded your preferred gadget driver, you are ready to connect and use at any time an USB device or a host PC without rebooting the board to use the USB OTG feature.
* Please check the [[USB_Gadget#Usage| USB Gadget usage]] for a step by step procedure.
* How to use all the possible USB devices on your board can be found on the [[USB_Host#Using_USB_device | USB Host usage page]]

= Known issue =
You can use USB mini A male - USB A female adapter to connect regular USB peripherals to your board with the following limitation:
* Connect first the USB device to the adaptor before connecting them to the board.
* Disconnect first the adapter from the board instead of disconnecting the USB device from the adapter.

This is a limitation of current implementation on the 2.6.35 linux USB drivers

= Links =

* http://www.usb.org/developers/onthego/
* http://www.lvr.com/embedded_host.htm

[[Category:BoardConnectivity]]
[[Category:Linux drivers]]
[[Category:USB]]