Objective Development Forums

Re: Wakeup the system

2015-10-18T13:54:19+02:00

I've implemented remote wakeup in my project of ps2usb translator and it works like charm

https://github.com/robszy/ps2usb/blob/m ... ard.c#L112

I only wait 10 ms and it never failed

regards,
Robert

Statistics: Posted by Guest — Sun Oct 18, 2015 1:54 pm

Re: Wakeup the system

2015-09-04T18:38:07+02:00

It probably won't harm. I think the host is just prepared to receive remote wake.

Statistics: Posted by christian — Fri Sep 04, 2015 6:38 pm

Re: Wakeup the system

2015-09-04T17:44:29+02:00

Not sure if this is the right way or to add a user configurable variable to the config file and check it here with a pre-processor. Either way this works. The Power Management tab shows up in the windows device setting now.

Statistics: Posted by kalidomra — Fri Sep 04, 2015 5:44 pm

Re: Wakeup the system

2015-09-04T11:47:12+02:00

Thanks for the hint! I've added it in the master branch on Github.

Statistics: Posted by christian — Fri Sep 04, 2015 11:47 am

Re: Wakeup the system

2015-09-03T23:11:26+02:00

This is a little old but I think V-USB is missing the USBATTR_REMOTEWAKE bit. Would it be correct to add it here in usbdrv.c:

Code:

#if USB_CFG_IS_SELF_POWERED
    (1 << 7) | USBATTR_SELFPOWER | USBATTR_REMOTEWAKE,       /* attributes */
#else
    (1 << 7)|USBATTR_REMOTEWAKE,                           /* attributes */
#endif

Statistics: Posted by kalidomra — Thu Sep 03, 2015 11:11 pm

Re: Wakeup the system

2013-05-26T20:29:16+02:00

Very interesting. I cannot google how to set/use USBATTR_REMOTEWAKE in V-USB HID device (keyboard). Could you please explain how to implement and use this feature?

Statistics: Posted by Guest — Sun May 26, 2013 8:29 pm

Re: Wakeup the system

2013-01-29T19:59:28+02:00

1. USB host should support this.
2. In the descriptor to enable USBATTR_REMOTEWAKE.

Code:

void wake_up_signal()
{
cli();
char ps_p = PORTD;
char ps_ddr = DDRD;
PORTD |=(1<PORTD &= ~(1<DDRD |= (1<_delay_ms(100);
PORTD ^=(1<PORTD ^=(1<_delay_ms(3);
PORTD =ps_p;
DDRD = ps_ddr;
  sei();
}

It works =)

Statistics: Posted by bvi — Tue Jan 29, 2013 7:59 pm

Re: Wakeup the system

2012-03-27T04:14:45+02:00

Hi,I'm confused with this problem,too. Have you finished the problem?I have tried the ways above,and as what you had done,it didn't work.I don't know what to do.How about you?

Statistics: Posted by Guest — Tue Mar 27, 2012 4:14 am

Re: Wakeup the system

2010-01-20T22:01:06+02:00

It was stupid to measure with the device disconnected, I guess... since a device has to signal its presence with a high on a data line. So, this is no real problem.
But I don't know what else I could test...

Statistics: Posted by Guest — Wed Jan 20, 2010 10:01 pm

Re: Wakeup the system

2010-01-20T19:04:30+02:00

This is not suspend mode, at least according to the specs...

Statistics: Posted by christian — Wed Jan 20, 2010 7:04 pm