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From: Joy Lee Joy on 27 Apr 2008 23:32
Dear All,
I'm going to develop a driver for notebook using.
The driver need to handle a device (capacitive sensor finger touch)
and then tuning system audio volume.
In such a case, which sample code classified in WDK source
catalogue
is suitable to refer ?

Thanks in Advance.

Sincerely,
Joy.

From: Tim Roberts on 28 Apr 2008 01:48
Joy Lee <Joy Lee(a)discussions.microsoft.com> wrote:
>
> I'm going to develop a driver for notebook using.
> The driver need to handle a device (capacitive sensor finger touch)
> and then tuning system audio volume.
> In such a case, which sample code classified in WDK source catalogue
> is suitable to refer ?

How is the capacitive sensor attached? What kind of bus? You will want to
make it a mouse driver.

Volume will be handled by the audio driver. It's not a separate device.
--
Tim Roberts, timr(a)probo.com
Providenza & Boekelheide, Inc.
From: Joy Lee on 28 Apr 2008 04:43
I have a touch panel which is composed of a botton, a slider and a scroll
wheel.
The capacitive sensors are connected to this panel.
When I touch the panel, touch event will be triggered,
I need to read device registers to do some judgement.
Then, I have to tune system audio volume accoring to this judgement.
It may set audio volume " mute " or " increasing / decreasing volume ".

Could I just develop only one driver to handle above ?
Some kernel audio APIs are available for just tuning volume "mute" or
"increasing / decreasing volume" ?

Thanks in Advance.

Sincerely,
Joy Lee.
joy.lee(a)ite.com.tw




"Tim Roberts" wrote:

> Joy Lee <Joy Lee(a)discussions.microsoft.com> wrote:
> >
> > I'm going to develop a driver for notebook using.
> > The driver need to handle a device (capacitive sensor finger touch)
> > and then tuning system audio volume.
> > In such a case, which sample code classified in WDK source catalogue
> > is suitable to refer ?
>
> How is the capacitive sensor attached? What kind of bus? You will want to
> make it a mouse driver.
>
> Volume will be handled by the audio driver. It's not a separate device.
> --
> Tim Roberts, timr(a)probo.com
> Providenza & Boekelheide, Inc.
>
From: Pavel A. on 28 Apr 2008 08:40
"Tim Roberts" <timr(a)probo.com> wrote in message
news:57pa149kmhp9u5b8m5phhqbpps69rjf35s(a)4ax.com...
> Joy Lee <Joy Lee(a)discussions.microsoft.com> wrote:
>>
>> I'm going to develop a driver for notebook using.
>> The driver need to handle a device (capacitive sensor finger touch)
>> and then tuning system audio volume.
>> In such a case, which sample code classified in WDK source catalogue
>> is suitable to refer ?
>
> How is the capacitive sensor attached? What kind of bus? You will want
> to
> make it a mouse driver.
>
> Volume will be handled by the audio driver. It's not a separate device.
> --
> Tim Roberts, timr(a)probo.com
> Providenza & Boekelheide, Inc.

Why a mouse? Can this be done by simulating these "multimedia" keyboards
with volume keys?

--PA


From: Tim Roberts on 30 Apr 2008 00:53
Joy Lee <JoyLee(a)discussions.microsoft.com> wrote:
>
>I have a touch panel which is composed of a botton, a slider and a scroll
>wheel.
>The capacitive sensors are connected to this panel.
>When I touch the panel, touch event will be triggered,
>I need to read device registers to do some judgement.

That's not what I meant. Is it a PCI device? A USB device? Direct I/O
ports?

>Then, I have to tune system audio volume accoring to this judgement.
>It may set audio volume " mute " or " increasing / decreasing volume ".
>
>Could I just develop only one driver to handle above ?
>Some kernel audio APIs are available for just tuning volume "mute" or
>"increasing / decreasing volume" ?

Pavel is right, you can simulate a keyboard and send the extended keyboard
commands for volume and mute.
--
Tim Roberts, timr(a)probo.com
Providenza & Boekelheide, Inc.
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