Re: [beagleboard] How to make BBB pins work after Ubuntu Trusty install?

[Pierre Kancir]

 Hi, 

If you want, I made a use case of dtb-rebuilter for kernel 3.14
https://github.com/khancyr/dtb-rebuilder/wiki

Le mercredi 10 décembre 2014 22:57:21 UTC+1, janszyma...@gmail.com a écrit :
>
> Roger that
>
> On Thursday, December 11, 2014 8:22:18 AM UTC+11, RobertCNelson wrote:
>>
>> On Wed, Dec 10, 2014 at 3:19 PM,   wrote: 
>> > OK, 
>> > 
>> >  Thanks Robert. 
>> > And thanks for your hard work contributing to the community. 
>> > 
>> > I will have a detailed study later as my first look here 
>> > https://github.com/cdsteinkuehler/beaglebone-universal-io 
>> > (your last link) got me worried. It says: 
>> > " 
>> > 
>> > Usage 
>> > 
>> > Load the overlay as usual 
>> > 
>> > echo cape-universaln > /sys/devices/bone_capemgr.*/slots" 
>> > 
>> > ... but there is no specified above directory. 
>>
>> That's the part where i mentioned: "(you can ignore the initial 
>> overlay note, as it's loaded by default.)" it's built-in to the 
>> v3.14.x base dtb file.. 
>>
>> Regards, 
>>
>> -- 
>> Robert Nelson 
>> http://www.rcn-ee.com/ 
>>
>

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[beagleboard] Re: Hostapd failed with USB WiFi dongle (RTL8188CUS 802.11n)

[Pierre Kancir]

Hi,

I setup ad hoc wifi with RTL8188CUS by following adafruit tutorial (step by 
step but adapting RTL chip version): 

https://learn.adafruit.com/setting-up-a-raspberry-pi-as-a-wifi-access-point/overview

If you use udhcp, you need to disable some part 
of /opt/scripts/boot/am335x_evm.sh relative to udhcp, and you lost ethernet 
via USB

Yours,

Le mardi 2 septembre 2014 18:26:54 UTC+2, nadir@gmail.com a écrit :
>
> hi, i'm encountring the same problem, did you solve this problem? if yes, 
> how??
>

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[beagleboard] Ina219 with linux kernel driver in Beaglebone Black

[pierre . kancir]

Hi,

I am trying to use ina219  sensor (
http://www.adafruit.com/products/904) with linux kernel driver on 
beaglebone black.

I want to use device tree overlay to use the sensor. I follow kernel 
indications (
http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/i2c/ina2xx.txt)
 
and the sensor works as expected. 

But adafruit board use 0.1ohms and default driver value for shunt-resistor 
is 10mOhms so return value are wrong.

I want to modify value in device tree as indicated 

ina219@40 {
  compatible = "ti,ina219";
  reg = <0x40>;
  shunt-resistor = <10>;
 };

but changing shunt-resistor value does nothing. The sensor is always create 
with 10mOhms value

ina2xx 1-0040: power monitor ina219 (Rshunt = 1 uOhm)

How can i change the shunt-resistor value to get the proper return?

thanks,

Pierre

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[beagleboard] Ina219 with linux kernel driver on Beaglebone Black

[pierre . kancir]

Hi,

I am trying to use ina219 sensor (http://www.adafruit.com/products/904) with 
linux kernel driver on beaglebone black.

I want to use device tree overlay to use the sensor. I follow kernel 
indications (
http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/i2c/ina2xx.txt)
 
and the sensor works as expected. 

But adafruit board use 0.1ohms and default driver value for shunt-resistor 
is 10mOhms so return value are wrong.

I want to modify value in device tree as indicated 

ina219@40 {
  compatible = "ti,ina219";
  reg = <0x40>;
  shunt-resistor = <10>;
 };

but changing shunt-resistor value does nothing. The sensor is always create 
with 10mOhms value

ina2xx 1-0040: power monitor ina219 (Rshunt = 1 uOhm)


How can i change the shunt-resistor value to get the proper return?


thanks,


Pierre

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[beagleboard] Ina219 with linux kernel driver

[Pierre Kancir]

Hi,

I am trying to use ina219  sensor (
http://www.adafruit.com/products/904) with linux kernel driver on 
beaglebone black.

I want to use device tree overlay to use the sensor. I follow kernel 
indications (
http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/i2c/ina2xx.txt)
 
and the sensor works as expected. 

But adafruit board use 0.1ohms and default driver value for shunt-resistor 
is 10mOhms so return value are wrong.

I want to modify value in device tree as indicated 

ina219@40 {
  compatible = "ti,ina219";
  reg = <0x40>;
  shunt-resistor = <10>;
 };

but changing shunt-resistor value does nothing. The sensor is always create 
with 10mOhms value

ina2xx 1-0040: power monitor ina219 (Rshunt = 1 uOhm)

How can i change the shunt-resistor value to get the proper return?

thanks,

Pierre

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