If you don't care about the initial state and when Linux is booting, why
don't you just invert
the duty cycle in software? That would effectively invert the pin polarity.
--- Graham
==
On Tuesday, September 20, 2016 at 10:07:21 AM UTC-5, Gerald wrote:
>
> Do a PDF search for the pin number.
>
Do a PDF search for the pin number.
Gerald
On Tue, Sep 20, 2016 at 10:02 AM, Nguyễn Hồng Quân
wrote:
>
>
> On Tue, Sep 20, 2016 at 9:50 PM, Gerald Coley
> wrote:
>
>>
>> Read the datasheet. It will tell you the state of the pin after reset,
>>
On Tue, Sep 20, 2016 at 9:50 PM, Gerald Coley
wrote:
>
> Read the datasheet. It will tell you the state of the pin after reset,
> before the SW has run..
>
I don't really care the status in short moment. The reason behind my
question is:
"
I want the pin to be 0V when
Read the datasheet. It will tell you the state of the pin after reset,
before the SW has run.
Gerald
On Tue, Sep 20, 2016 at 9:29 AM, evilwulfie wrote:
>
>
>
> you will need an external inverting buffer
>
>
>
> On 9/20/2016 7:06 AM, Nguyễn Hồng Quân wrote:
>
> What I want
Hi Robert,
So there is no way to config the pin? I want the pin to be 0V when PWM is
working, because I want to reduce the power drain from my BeagleBone board
to feed the PWM pin. It is similar to why we have GPIO at 0V to turn on the
LED.
On Tue, Sep 20, 2016 at 9:20 PM, Robert Nelson
you will need an external inverting buffer
On 9/20/2016 7:06 AM, Nguyễn Hồng Quân wrote:
> What I want is, after "reset", the servo motor is supposed to be off,
> the pin is 3.3V, and when PWM starts, the servo is supposed to be
> started, the pin is 0V.
>
> On Tue, Sep 20, 2016 at 8:40 PM,
On Tue, Sep 20, 2016 at 9:06 AM, Nguyễn Hồng Quân
wrote:
> What I want is, after "reset", the servo motor is supposed to be off, the
> pin is 3.3V, and when PWM starts, the servo is supposed to be started,
> the pin is 0V.
>
>
Stick an inverter in there.
Regards,
--
What I want is, after "reset", the servo motor is supposed to be off, the
pin is 3.3V, and when PWM starts, the servo is supposed to be started, the
pin is 0V.
On Tue, Sep 20, 2016 at 8:40 PM, evilwulfie wrote:
you are not making sense.
>
> pwm pin low - 0v high = 3.3 v
>
you are not making sense.
pwm pin low - 0v high = 3.3 v
On 9/20/2016 1:48 AM, Hồng Quân Nguyễn wrote:
> Hi,
>
> Is there any way to configure logic level for PWM on BeagleBone
> Black/Green? I want that in duty cycle, the level of pinout is 0V,
> instead of 3.3V.
>
> I'm using Debian 8 with