Hi Vincent,William, 
Yes I am using Kernel > 3.8 (4.1) and trying to simulate the SPI signals on 
the GPIOs.(CLK,Data,CS)
I don't want to use the host SPI driver and want to implement evrythign via 
GPIO.
any comments !
Rgds,
Rp

On Thursday, May 26, 2016 at 8:32:15 PM UTC+5:30, Vincent lc wrote:

> Hi, 
>
> If you want to use a kernel version >= 3.8, you are obliged to use a DTS 
> (Device tree source) in order ton configured the GPIO.
> And I advised you to use one because It's important to be on page :-)
>
> I like lots of microcontroller, you always need to configured pins before 
> using them, here, the way is to use the overlay (mean that they are load 
> when the board is steal running) ;-).
> The video that you posted is a good example, you can also check the 
> associate website : http://exploringbeaglebone.com/chapter6/  where you 
> can download source code and so on ^_^.
>
> Have a lovely day !
> Enjoy 
> Vincent
>
>
>
> Le jeudi 26 mai 2016 15:46:20 UTC+2, Raul Piper a écrit :
>>
>> HI ,  
>> I am new to BBB.I am trying to create a user app to access GPIO in BBB.I 
>> came across this video - > https://www.youtube.com/watch?v=wui_wU1AeQc 
>>  .Is it really necessary to use Device overlay to access the GPIOs?
>> Can some one please post a link to how to get started with  GPIOS on BBB.
>> Rgds,
>> Rp
>>
>

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