laforge at openmoko.org
Fri Aug 29 05:56:50 CEST 2008
On Thu, Aug 28, 2008 at 12:29:22AM +0800, matt_hsu wrote:
> Michael 'Mickey' Lauer wrote:
>> Am Mittwoch 27 August 2008 17:43:45 schrieb Andy Green:
>>> What I did was change the timer used in the resource for fiq on 2.6.27
>>> and it seemed to be OK then. We don't use the PWM for LEDs due to
> IIRC, we don't use PWM to drive LED due to suspend/resume. Since PWM
> logic becomes odd after resuming.
> In consequence, LEDs can't be blinking anymore after resuming. I sent
> the patch to fix the PWM issue.
> It should be worked if we use PWM for LEDs
please also consider PWM for the vibrator. the vibrator is not vibrating as
strong in GTA02 than it did in GTA01. This is probably due to the fact that it
now runs on Vbatt rather than IO_3V3 (i thought it is just not good to run a
high-current consumer like an electrical motor off a digital power lane).
However, the higher voltage (it is within spec of the vibrator) seems to make the
vibration less powerful. I suspect it is moving too fast to resonate.
Having PWM on the vibrator would allow us to try to optimize the optimum RPM
for maximum vibration.
- Harald Welte <laforge at openmoko.org> http://openmoko.org/
Software for the world's first truly open Free Software mobile phone
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