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2010-05-20
, 20:46
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Joined on Dec 2009
@ California
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#932
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Originally Posted by blue_led
It uses 15K Ohm resistors.
afik if both data lines are low level this mean SE0 and ANY device peripheral or host ( even host ) can't use data channel.
EDIT: at least it looks like.
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2010-05-20
, 21:38
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#933
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Originally Posted by blue_led
Well, I think he's right. You cannot detect if a peripheral has been attached to the N900; you need to be in a "special" mode which forces the PHY to be powered, adequate pull up/downs, ....
joerg you are partially wrong
It is theoretically feasible to be _always_ on this especial state, but I wonder about battery life...
Of course since you plan to use a self powered "docking station" you could use vbus sense for the task.
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2010-05-20
, 21:57
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Posts: 306 |
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Joined on Jan 2010
@ Romania
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#934
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Originally Posted by javispedro
yes, this is my goal.
Of course since you plan to use a self powered "docking station" you could use vbus sense for the task.
i want to differentiate attachment to pc or attacment to self powered charging capable docking station
even in manually activated host mode vbus sense can trigger without manual selection charging mode
some misunderstandings because my english knowledge is limited
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2010-05-21
, 00:53
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Posts: 4,930 |
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Joined on Oct 2007
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#935
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Originally Posted by eryx
Once host mode is working properly, yes, USB data modems of all varieties should work fine. But madwifi would have nothing to do with this -- USB data modems show up as a tty which is talked to with a modified Hayes command set.
Can we use WiMax usb modem with this host mode? madwifi drivers theoretically can be easy compiled for N900.
The use of madwifi (or other wifi drivers) would be with a USB wifi stick; among benefits over the N900's wifi are 802.11a/n 5GHz band, and packet injection for aircrack-in-a-pocket. This (aircrack stuff) was done by some people on the N8x0 after OTG arrived, search about for exact details...
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2010-05-21
, 01:37
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@ California
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#936
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Ha!
I found why N900 on USB-to-PC has a constant frequency 500MHz while USB cable from PC (not fast charger) is connected -
../../../arch/arm/mach-omap2/board-rx51.c:156: omap_pm_set_min_mpu_freq(dev, set ? 500000000 : 0);
... and it is called while resuming power for USB to communicate with gadget.
I found why N900 on USB-to-PC has a constant frequency 500MHz while USB cable from PC (not fast charger) is connected -
../../../arch/arm/mach-omap2/board-rx51.c:156: omap_pm_set_min_mpu_freq(dev, set ? 500000000 : 0);
... and it is called while resuming power for USB to communicate with gadget.
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2010-05-21
, 04:37
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Joined on May 2010
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#937
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maybe try using easy debian? its a hole different os and also when i go to folder media it has mmc1, mmc2, and usb folders in it (i donts know if that helps)
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2010-05-21
, 07:10
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Joined on Feb 2010
@ Moscow
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#938
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Originally Posted by Benson
Sorry! I mean "madwimax" driver. I try this soon.
Once host mode is working properly, yes, USB data modems of all varieties should work fine. But madwifi would have nothing to do with this -- USB data modems show up as a tty which is talked to with a modified Hayes command set.
The use of madwifi (or other wifi drivers) would be with a USB wifi stick; among benefits over the N900's wifi are 802.11a/n 5GHz band, and packet injection for aircrack-in-a-pocket. This (aircrack stuff) was done by some people on the N8x0 after OTG arrived, search about for exact details...
Last edited by eryx; 2010-05-21 at 07:52.
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2010-05-21
, 07:53
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Joined on Oct 2009
@ Jerusalem, PS/IL
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#939
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Originally Posted by BLIZZARD
Host mode should be OS independant.
maybe try using easy debian? its a hole different os and also when i go to folder media it has mmc1, mmc2, and usb folders in it (i donts know if that helps)
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2010-05-23
, 17:56
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Joined on Mar 2010
@ SOL 3
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#940
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http://mxr.maemo.org/fremantle/sourc...b_procfs.c#661
Code:
656 case 'H':
657 if (mbase) {
658 reg = musb_readb(mbase, MUSB_DEVCTL);
659 reg |= MUSB_DEVCTL_HR;
660 musb_writeb(mbase, MUSB_DEVCTL, reg);
661 /* MUSB_HST_MODE( ((struct musb*)data) ); */
662 /* WARNING("Host Mode\n"); */
663 }
664 break;
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First USB hostmode fanatic, father of H-E-N
Maemo Community Council member [2012-10, 2013-05, 2013-11, 2014-06 terms]
Hildon Foundation Council inaugural member.
MCe.V. foundation member
EX Hildon Foundation approved Maemo Administration Coordinator (stepped down due to bullying 2014-04-05)
aka "techstaff" - the guys who keep your infra running - Devotion to Duty http://xkcd.com/705/
IRC(freenode): DocScrutinizer*
First USB hostmode fanatic, father of H-E-N
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| Tags |
| awesomeness in the works, boulevard of broken deals, host, i am the dealbreaker, inspector gadget lies, mobidapter is a scam, nokia fanbois, otg, over 9000, usb, usbcontrol |
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All times are GMT. The time now is 07:55.
if a peripheral is inserted into a host receptacle this is signaled by pulling d+ up so this differential "1" mean session can be started.
from peripheral POV those :R keep d- low for charger detection and d+ low for not initiate SRP because phy is MASTER on ulpi ( DIR signal is output on phy )
so all make sense
Last edited by blue_led; 2010-05-20 at 20:32.