[beagleboard] Re: 1 Wire device with universal overlay

2016-08-21 Thread proprintsupply 
Did you figure this out? I'm trying to solve the same problem.

On Wednesday, May 11, 2016 at 8:49:38 AM UTC-7, Ray Madigan wrote:
>
> I have been using a 1 wire overlay for pin P9.22  for a while and I just 
> expanded my toy to use a couple of pwm pins.  Instead of creating the 
> overlay myself, I figured I would try the universal overlay.  I am using 
> universaln and have an init.d script to load it and all is well.  The 
> problem is, I haven't solved the problem of getting P9.22 back to 1 Wire 
> that I need.
>
> I tried looking at my overlay and modifying the universal overlay to 
> implement it, I guess I don't understand enough to make that work.
>
> Then I commented out all of the P9_22 and P9.22 stuff in the overlay, make 
> worked successfully, but when I try to load my old P9_22 overlay I get the 
> File Exists error so there seems to still be a conflict.  
>
> What is the preferred way to solve this problem?
>
>  
>

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[beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread TJF 
Why don't you adapt the 1-wire overlay? It should be easy to use a pin not 
connected to any PWMSS. Ie. use P9_11 or P8_07.

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[beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread Ray Madigan 
Because the universal overlay causes my one wire overlay to be rejected. 
 The error is File Exists and dmesg points to the conflict with the slots 
entry that has the conflict.  I am probably doing something wrons, even 
when I delete the P9_22 from the universal overlay and reapply it, it 
rejects my overlay.

I am working on this from two perspectives, i need to be able to get back 
to work :).  I am building a non universal overlay that will include my one 
wire pin, the pwm pins I need, and others as I work out my application.  I 
will use this until I figure out the universal overlay issue.

I have never written an overlay that uses two pins on the same device, I am 
working that out now.

On Thursday, May 12, 2016 at 8:41:41 AM UTC-7, TJF wrote:
>
> Why don't you adapt the 1-wire overlay? It should be easy to use a pin not 
> connected to any PWMSS. Ie. use P9_11 or P8_07.
>

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Re: [beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread William Hermans 
>
> *Because the universal overlay causes my one wire overlay to be rejected.
>  The error is File Exists and dmesg points to the conflict with the slots
> entry that has the conflict.  I am probably doing something wrons, even
> when I delete the P9_22 from the universal overlay and reapply it, it
> rejects my overlay.*


Because the pin is already configured. *Every* pin is configured when you
use universal io. Plus the point of using universal io is so you do not
have to configure the pin through an overlay. So learn how to use universal
io + config-pin to configure the pin.


On Thu, May 12, 2016 at 9:05 AM, Ray Madigan 
wrote:

> Because the universal overlay causes my one wire overlay to be rejected.
> The error is File Exists and dmesg points to the conflict with the slots
> entry that has the conflict.  I am probably doing something wrons, even
> when I delete the P9_22 from the universal overlay and reapply it, it
> rejects my overlay.
>
> I am working on this from two perspectives, i need to be able to get back
> to work :).  I am building a non universal overlay that will include my one
> wire pin, the pwm pins I need, and others as I work out my application.  I
> will use this until I figure out the universal overlay issue.
>
> I have never written an overlay that uses two pins on the same device, I
> am working that out now.
>
> On Thursday, May 12, 2016 at 8:41:41 AM UTC-7, TJF wrote:
>>
>> Why don't you adapt the 1-wire overlay? It should be easy to use a pin
>> not connected to any PWMSS. Ie. use P9_11 or P8_07.
>>
> --
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> 
> .
>
> For more options, visit https://groups.google.com/d/optout.
>

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Re: [beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread Ray Madigan 
That's correct, every pin is configured.  And the load the driver for PWM, 
or SPI, or ... but it is not configured to load the OneWire driver for the 
pin.  All of the config-pin options are for standard drivers.  The point 
is, if you want to use the pin to another device that is not a built in 
device then one needs to do something different.

On Thursday, May 12, 2016 at 10:20:37 AM UTC-7, William Hermans wrote:
>
> *Because the universal overlay causes my one wire overlay to be rejected. 
>>  The error is File Exists and dmesg points to the conflict with the slots 
>> entry that has the conflict.  I am probably doing something wrons, even 
>> when I delete the P9_22 from the universal overlay and reapply it, it 
>> rejects my overlay.*
>
>
> Because the pin is already configured. *Every* pin is configured when you 
> use universal io. Plus the point of using universal io is so you do not 
> have to configure the pin through an overlay. So learn how to use universal 
> io + config-pin to configure the pin.
>
>
> On Thu, May 12, 2016 at 9:05 AM, Ray Madigan  > wrote:
>
>> Because the universal overlay causes my one wire overlay to be rejected.  
>> The error is File Exists and dmesg points to the conflict with the slots 
>> entry that has the conflict.  I am probably doing something wrons, even 
>> when I delete the P9_22 from the universal overlay and reapply it, it 
>> rejects my overlay.
>>
>> I am working on this from two perspectives, i need to be able to get back 
>> to work :).  I am building a non universal overlay that will include my one 
>> wire pin, the pwm pins I need, and others as I work out my application.  I 
>> will use this until I figure out the universal overlay issue.
>>
>> I have never written an overlay that uses two pins on the same device, I 
>> am working that out now.
>>
>> On Thursday, May 12, 2016 at 8:41:41 AM UTC-7, TJF wrote:
>>>
>>> Why don't you adapt the 1-wire overlay? It should be easy to use a pin 
>>> not connected to any PWMSS. Ie. use P9_11 or P8_07.
>>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
>> You received this message because you are subscribed to the Google Groups 
>> "BeagleBoard" group.
>> To unsubscribe from this group and stop receiving emails from it, send an 
>> email to beagleboard...@googlegroups.com .
>> To view this discussion on the web visit 
>> https://groups.google.com/d/msgid/beagleboard/5dc3979a-1d78-45d1-82d0-dea8b8004a14%40googlegroups.com
>>  
>> 
>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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Re: [beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread William Hermans 
>
> *That's correct, every pin is configured.  And the load the driver for
> PWM, or SPI, or ... but it is not configured to load the OneWire driver for
> the pin.  All of the config-pin options are for standard drivers.  The
> point is, if you want to use the pin to another device that is not a built
> in device then one needs to do something different.*
>

How was the pin configured before ? There is no one wire peripheral module,
so it must have been configured as GPIO. As far as one-wire goes I have
never used it before, but have read it is basically a modified I2C
protocol(somehow ).

If I was able to look at the device tree file you use before. Perhaps I
could offer assistance.

On Thu, May 12, 2016 at 10:38 AM, Ray Madigan 
wrote:

> That's correct, every pin is configured.  And the load the driver for PWM,
> or SPI, or ... but it is not configured to load the OneWire driver for the
> pin.  All of the config-pin options are for standard drivers.  The point
> is, if you want to use the pin to another device that is not a built in
> device then one needs to do something different.
>
> On Thursday, May 12, 2016 at 10:20:37 AM UTC-7, William Hermans wrote:
>>
>> *Because the universal overlay causes my one wire overlay to be rejected.
>>>  The error is File Exists and dmesg points to the conflict with the slots
>>> entry that has the conflict.  I am probably doing something wrons, even
>>> when I delete the P9_22 from the universal overlay and reapply it, it
>>> rejects my overlay.*
>>
>>
>> Because the pin is already configured. *Every* pin is configured when you
>> use universal io. Plus the point of using universal io is so you do not
>> have to configure the pin through an overlay. So learn how to use universal
>> io + config-pin to configure the pin.
>>
>>
>> On Thu, May 12, 2016 at 9:05 AM, Ray Madigan 
>> wrote:
>>
>>> Because the universal overlay causes my one wire overlay to be
>>> rejected.  The error is File Exists and dmesg points to the conflict with
>>> the slots entry that has the conflict.  I am probably doing something
>>> wrons, even when I delete the P9_22 from the universal overlay and reapply
>>> it, it rejects my overlay.
>>>
>>> I am working on this from two perspectives, i need to be able to get
>>> back to work :).  I am building a non universal overlay that will include
>>> my one wire pin, the pwm pins I need, and others as I work out my
>>> application.  I will use this until I figure out the universal overlay
>>> issue.
>>>
>>> I have never written an overlay that uses two pins on the same device, I
>>> am working that out now.
>>>
>>> On Thursday, May 12, 2016 at 8:41:41 AM UTC-7, TJF wrote:

 Why don't you adapt the 1-wire overlay? It should be easy to use a pin
 not connected to any PWMSS. Ie. use P9_11 or P8_07.

>>> --
>>> For more options, visit http://beagleboard.org/discuss
>>> ---
>>> You received this message because you are subscribed to the Google
>>> Groups "BeagleBoard" group.
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>>> an email to beagleboard...@googlegroups.com.
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>>> 
>>> .
>>>
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>> --
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Re: [beagleboard] Re: 1 Wire device with universal overlay

2016-05-12 Thread Ray Madigan 
/dts-v1/;
 /plugin/;
 / {
  compatible = "ti,beaglebone", "ti,beaglebone-black";
  part-number = "BB-W1";
  version = "00A0";
   exclusive-use =
"P9.22",
"gpio0_2";
  fragment@0 {
 target = <&am33xx_pinmux>;
 __overlay__ {
dallas_w1_pins: pinmux_dallas_w1_pins {
pinctrl-single,pins = < 0x150 0x37 >; };
 };
  };
  fragment@1 {
 target = <&ocp>;
 __overlay__ {
   onewire@0 {
compatible   = "w1-gpio";
pinctrl-names  = "default";
pinctrl-0= <&dallas_w1_pins>;
status = "okay";
gpios = <&gpio1 2 0>;
   };
  };
  };
 };


On Thu, May 12, 2016 at 11:07 AM, William Hermans  wrote:

> *That's correct, every pin is configured.  And the load the driver for
>> PWM, or SPI, or ... but it is not configured to load the OneWire driver for
>> the pin.  All of the config-pin options are for standard drivers.  The
>> point is, if you want to use the pin to another device that is not a built
>> in device then one needs to do something different.*
>>
>
> How was the pin configured before ? There is no one wire peripheral
> module, so it must have been configured as GPIO. As far as one-wire goes I
> have never used it before, but have read it is basically a modified I2C
> protocol(somehow ).
>
> If I was able to look at the device tree file you use before. Perhaps I
> could offer assistance.
>
> On Thu, May 12, 2016 at 10:38 AM, Ray Madigan 
> wrote:
>
>> That's correct, every pin is configured.  And the load the driver for
>> PWM, or SPI, or ... but it is not configured to load the OneWire driver for
>> the pin.  All of the config-pin options are for standard drivers.  The
>> point is, if you want to use the pin to another device that is not a built
>> in device then one needs to do something different.
>>
>> On Thursday, May 12, 2016 at 10:20:37 AM UTC-7, William Hermans wrote:
>>>
>>> *Because the universal overlay causes my one wire overlay to be
 rejected.  The error is File Exists and dmesg points to the conflict with
 the slots entry that has the conflict.  I am probably doing something
 wrons, even when I delete the P9_22 from the universal overlay and reapply
 it, it rejects my overlay.*
>>>
>>>
>>> Because the pin is already configured. *Every* pin is configured when
>>> you use universal io. Plus the point of using universal io is so you do not
>>> have to configure the pin through an overlay. So learn how to use universal
>>> io + config-pin to configure the pin.
>>>
>>>
>>> On Thu, May 12, 2016 at 9:05 AM, Ray Madigan 
>>> wrote:
>>>
 Because the universal overlay causes my one wire overlay to be
 rejected.  The error is File Exists and dmesg points to the conflict with
 the slots entry that has the conflict.  I am probably doing something
 wrons, even when I delete the P9_22 from the universal overlay and reapply
 it, it rejects my overlay.

 I am working on this from two perspectives, i need to be able to get
 back to work :).  I am building a non universal overlay that will include
 my one wire pin, the pwm pins I need, and others as I work out my
 application.  I will use this until I figure out the universal overlay
 issue.

 I have never written an overlay that uses two pins on the same device,
 I am working that out now.

 On Thursday, May 12, 2016 at 8:41:41 AM UTC-7, TJF wrote:
>
> Why don't you adapt the 1-wire overlay? It should be easy to use a pin
> not connected to any PWMSS. Ie. use P9_11 or P8_07.
>
 --
 For more options, visit http://beagleboard.org/discuss
 ---
 You received this message because you are subscribed to the Google
 Groups "BeagleBoard" group.
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 .

 For more options, visit https://groups.google.com/d/optout.

>>>
>>> --
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>>