Re: [beagleboard] Beaglebone black wireless and wl18xx ...

[Philippe Frossard]

Hi,
Yes, I saw ...
D2 is not present on the board, I will do the test with D2 ...
The BBBW doesn't shutdown correctly without wifi, some process block ...
I have also a problem with ADC power,
The ADC power (P9.32) doesn't fall to 0v and I use this signal (With 
BBB) to disconnect my LiPo ...

I try to find another way,
Thanks.

Le 01/09/2020 à 23:18, Alexander Zangerl a écrit :

On Tue, 01 Sep 2020 11:17:47 +0200, Philippe Frossard writes:

The wl1835 doesn't work on LiPo battery when DC 5v is disconnected,
I read about diode D2 on the board ...
I would like to know if this diode is the solution ?

it is, at least according to the bbbw schematic
at 
https://github.com/beagleboard/beaglebone-black-wireless/blob/master/BeagleBone_Black_Wireless_SCH.pdf
(top left corner of the 'wifi module' section).

for unknown reasons the bbbw designers have marked it 'dnp' (do not populate)
on the schematic.

regards
az




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Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Tarmo Kuuse]

Hi Niresh,

On 02.09.20 08:41, Niresh wrote:

You are right, I've done a little experiment to confirm the same.


Good to hear!

Could you please tell me starts from which version of kernel 
"BB-I2C*2*-RTC-DS3231.dtbo" device tree works. I will tell you why,  I 
was using arm-linux-gnueabihf-gcc-4.9 to compile my application code in 
the 4.4.30-ti-r64 kernel, and it compiled and ran perfectly. Now the 
same application code gives me an error message with 
compiler arm-linux-gnueabihf-gcc-8 in the new image 4.19.94-ti-r42.


Like I said before, I am not a linux guy and the developer, who coded 
this and has left the organisation, cautioned me to stick with 
4.4.30-ti-r64 kernel for stable operation of application code. Please 
advise which version is good to go and how to overcome this issue.


I haven't a clue.

Looking at the the larger picture, the Debian distribution installed on 
your BeagleBone (version 10 a.k.a. "buster") is happy to work with a few 
different versions of the gcc compiler and the kernel. The problem here 
is that you're looking to use some really old stuff.


Regarding gcc - Debian 10 has out of box support for gcc-7 and gcc-8, 
but not gcc-4. You can search for older versions (e.g. "apt-cache search 
gcc-7") and install them (e.g. "sudo apt install gcc-7").


If gcc-4.9 is really required, you might try the official packages from 
Debian 8 "jessie" (when it was last supported), but it's going to be 
tricky to install and leave the package system in a weird state. You can 
also compile gcc-4.9 yourself from source :). As an alternative, you can 
try to keep your code up to date with newer compiler releases and try 
fixing the code so it compiles with gcc-8.


Regarding the kernel - there are probably old kernel releases which are 
OK to use on Debian 10 and might even support the recent device trees 
that you need. You can search for them in the package system (e.g. 
"apt-cache search 'kernel-image.*4.4.30*'") but I have no idea what 
happens if you install them. Maybe Robert can comment on that.


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Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Tarmo Kuuse]

On 02.09.20 11:55, Tarmo Kuuse wrote:
"apt-cache search 'kernel-image.*4.4.30*'") but I have no idea what 


Sorry, the search term is probably 'linux-image*4.4.30*', I don't 
remember what the BB-s kernel packages were named.


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Re: [beagleboard] USB3 on BBAI

['Roger Quadros' via BeagleBoard]

David,

Does the USB1 automatically switch to host mode when you plug the type-C 
adapter?
Can you please print the kernel log without the adapter connected and then plug 
the
type-C adapter?

Looking at device tree (usb1 dr_mode = "otg") I assumed that the type-C was 
designed for
both device and host cases but it looks like it was never designed to be used 
as a host as
there is no VBUS regulator for the type-C port.

The safest way to provide power to the peripheral is like what Robert suggested
- Use a *powered USB3 hub and connect your camera to that

cheers,
-roger

On 01/09/2020 19:54, David Nolan wrote:

Hi Robert,

For me I've powered the device on P9.5 and P9.1, as you've said, and connected 
a powered USB hub to the Type-C also. In this scenario my camera gets power, 
but is not seen by the BBAI (same for a USB key). When I do a lsusb, it just 
shows the USB hubs (internally) as if nothing is connected. When I connect to 
the USB 2 port everything works as expected.

Has anyone successfully gotten the USB3 to work as a host? If so, how?

Appreciate all the help,

Thanks,
David

On Tue, Sep 1, 2020 at 9:46 AM robert.sty...@gmail.com  
mailto:robert.styles.fors...@gmail.com>> wrote:

 From what I can see on the schematic, there is no way to power a USB 
device plugged into the BBAI USB Type-C socket, there is no path to switch +5V 
power to the Type-C socket VBUS.

You would need some sort of adapter or hub with power to supply your device 
(and the BBAI see below).

The BBAI needs power from either USB Type-C or (+5V) P9.5, P9.6 and (0V) 
P9.1, P9.2.

The USB2 can supply power to a device.

On Tuesday, 1 September 2020 at 17:21:23 UTC+1 David Nolan wrote:

Hi Roger,

I finally got a Type-C to Type-A adapter but when I connected it, I 
still get no power to my camera, or to a USB Thumb Drive. Is there some setting 
I need to change to get this to work perhaps?

Thanks,
David

On Wednesday, August 19, 2020 at 12:35:46 AM UTC-7 Roger Quadros wrote:

David,


On 18/08/2020 21:35, David Nolan wrote:

Hi Roger,

Thanks for your email. Apologies for the delay getting back to you. 
Yes, I'm connecting the camera to the Type-C port. The camera has a Micro B 
connector so what I have right now is a cable with a USB Type-C on one end and 
a Micro-B connector on the other side. Unfortunately my laptop doesn't have a 
USB Type-C connector so I can't check it on my own laptop. The camera supports 
USB 3 according to the manufacturer.


This is not the right way of connecting a device to the Type-C 
port. You will need a Type-C to Type-A adapter to connect non type-C 
peripherals.
The Adapter is important because it will tell the Type-C logic on 
the board to switch to DFP (Downstream facing port mode) and so turn on VBUS.

You should not need to run the script. AFAIK the port is in dual-role mode 
"otg" and should automatically switch to host on connecting the right adapter.
In case you have a type-c thumb drive you should be able to test 
this out.



My Apologies, I was incorrect on P5, it's connected to P9, the cape 
connector on the same side of the board as the Type-C connector.

Your point that the camera should be able to take power from USB 
Type-C connector perhaps could be pointing to an issue. I'm not able to get any 
power out of that port. Is there some setting I have to make, or a jumper or 
something to get that to work? Mine seems to only take power in on the Type-C 
connector.


Right. That's why you need to use the type-C to type-A adapter.
e.g.

https://www.amazon.com/Anker-Adapter-Converts-Technology-Compatible/dp/B01COOQIKU?ref_=fsclp_pl_dp_5

cheers,
-roger



Thanks,
David

On Fri, Aug 14, 2020 at 12:56 AM Roger Quadros  
wrote:

Hi David,

On 13/08/2020 19:21, Dave wrote:
> Hi there,
>
> I'm trying to connect a USB3 camera I have to the BBAI (uname 
-r gives 4.14.108-ti-r131).

How are you connecting the camera to the Type-C port? Does the 
camera support Type-C?
If not what type-C to Type-A adaptor are you using? Does it 
support USB3.0? Did you verify it with your laptop's type-C port for example?

>
> I've run "sudo /opt/scripts/boot/bbai_usb_host.sh" to change 
the USB port from a client into a host. I'm powering my camera from the 5V on the beaglebone 
on P5, pin 8. However the camera is not getting detected when connected. I know the camera 
works as if I connect it to the USB2 port it all works perfectly.

What is P5?

Camera should be able to take power from the USB port. Why the 
custom power connectio

Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Robert Nelson]

On Wed, Sep 2, 2020 at 12:41 AM Niresh  wrote:
>
> Hi,
> You are right, I've done a little experiment to confirm the same.
>
> Test #1: Made both system and RTC time synchronized with  2020-09-02 09:00:30 
> and then rebooted , both time syncs.
>
> Test #2: Made RTC time delay with an hour by using command hwclock --set 
> --date "09/02/20 08:00:30 "and system time 2020-09-02 09:00:30 and then 
> rebooted. Now, the system time is not sync with RTC,it remains unchanged 
> 2020-09-02 09:00:30
>
> Test #3:   Made RTC time advance with an hour by using command hwclock --set 
> --date "09/02/20 10:00:30 "and system time 2020-09-02 09:00:30 and then 
> rebooted.   Now, the system time is sync with RTC, that's with 2020-09-02 
> 10:00:30
>
> Could you please tell me starts from which version of kernel 
> "BB-I2C2-RTC-DS3231.dtbo" device tree works. I will tell you why,  I was 
> using arm-linux-gnueabihf-gcc-4.9 to compile my application code in the 
> 4.4.30-ti-r64 kernel, and it compiled and ran perfectly. Now the same 
> application code gives me an error message with compiler 
> arm-linux-gnueabihf-gcc-8 in the new image 4.19.94-ti-r42.
>
> Like I said before, I am not a linux guy and the developer, who coded this 
> and has left the organisation, cautioned me to stick with 4.4.30-ti-r64 
> kernel for stable operation of application code.  Please advise which version 
> is good to go and how to overcome this issue.

Can you share the actual "error message"?

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] Welcome the Fall 2020 Embedded Linux Class

[Mark A. Yoder]

Thanks to all for you interest in the class.  Most of the materials 
on https://elinux.org/Category:ECE497 and you are welcome to see/use them.
Unfortunately much of the other content is not available to those out is 
the class.

--Mark

On Tuesday, September 1, 2020 at 4:17:05 PM UTC-4 jonn...@gmail.com wrote:

> I would be interested in checking out your class.
>
> Is there a site to sign up for this?
>
> Cheers,
>
> Jon
>
> On Tue, Sep 1, 2020 at 1:05 PM Mark A. Yoder  wrote:
>
>> The purpose of this posting is to announce that I'm once again teaching 
>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>> the  *BeagleBone Black.* 
>> I'm teaching as open-source as I can and have have posted many of course 
>> materials on eLinux.org [2] and github[3].
>>
>> I'm always open to ideas on what topics to include in the class and 
>> suggestions for interesting course projects.  For example we are starting
>> Python this week and hope to be writing simple kernel module 5 weeks from 
>> now.  That will be followed by a week of PRU programming.
>>
>> Class, please respond to this posting.  Others, please welcome my class.
>>
>> --Mark 
>>
>> --Prof. Mark A. Yoder 
>>   Rose-Hulman Institute of Technology [4] 
>>
>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>> [2] http://elinux.org/index.php?title=Category:ECE497 
>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>> [4] http://www.rose-hulman.edu 
>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
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>> "BeagleBoard" group.
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>> email to beagleboard...@googlegroups.com.
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>> https://groups.google.com/d/msgid/beagleboard/e7663106-85ab-4e88-9863-6c66676af9e1n%40googlegroups.com
>>  
>> 
>> .
>>
>

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[beagleboard] Re: Latest Image - Summer 2020 Release - RC2 (GSOC stuff)

[jose...@gmail.com]

Hi Robert,

The wiki page at https://elinux.org/Beagleboard:Latest-images-testing has 
some outdated info on the Sumer 2020 Release.
While the RC2 is marked (properly) has released in August 26, it says the 
final version was released in August 3rd!

Best regards,
José Gonçalves

A quarta-feira, 26 de agosto de 2020 à(s) 15:45:24 UTC+1, RobertCNelson 
escreveu:

> Hi Everyone,
>
> So RC2 is now out, all the "wl18xx" based devices now have working
> Bluetooth again, config: CONFIG_SERIAL_SC16IS7XX completely broke it..
>
> I'm planning to do the "full" burn in testing this Saturday, my targets 
> are:
>
> Windows 10 (2004)
> Debian
> Mac OS (Mojave, Catalina)
>
> Here is what i did last 'time' which took about a full day of none stop 
> testing:
>
> https://github.com/beagleboard/Latest-Images/issues/26
>
> Please reply with more things to verify..
>
> Now GSOC students, please reply with still un-merged patches and what
> kernel they are targeting. I'd like to get all these projects built
> and merged by this Thursday, then we can do a final "RC" next week,
> that may turn into "FInal"..
>
> Regards,
>
> -- 
> Robert Nelson
> https://rcn-ee.com/
>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Emilyd 287]

Hi Dr. Yoder,

Looking forward to this quarter!

-Emily

On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:

> The purpose of this posting is to announce that I'm once again teaching 
> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
> the  *BeagleBone Black.* 
> I'm teaching as open-source as I can and have have posted many of course 
> materials on eLinux.org [2] and github[3].
>
> I'm always open to ideas on what topics to include in the class and 
> suggestions for interesting course projects.  For example we are starting
> Python this week and hope to be writing simple kernel module 5 weeks from 
> now.  That will be followed by a week of PRU programming.
>
> Class, please respond to this posting.  Others, please welcome my class.
>
> --Mark 
>
> --Prof. Mark A. Yoder 
>   Rose-Hulman Institute of Technology [4] 
>
> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
> [2] http://elinux.org/index.php?title=Category:ECE497 
> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
> [4] http://www.rose-hulman.edu 
>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Joshua Key]

Hello Dr. Yoder,

I'm interested to see what we will be doing this quarter.

-Joshua Key

On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com wrote:

> Hi Dr. Yoder,
>
> Looking forward to this quarter!
>
> -Emily
>
> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>
>> The purpose of this posting is to announce that I'm once again teaching 
>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>> the  *BeagleBone Black.* 
>> I'm teaching as open-source as I can and have have posted many of course 
>> materials on eLinux.org [2] and github[3].
>>
>> I'm always open to ideas on what topics to include in the class and 
>> suggestions for interesting course projects.  For example we are starting
>> Python this week and hope to be writing simple kernel module 5 weeks from 
>> now.  That will be followed by a week of PRU programming.
>>
>> Class, please respond to this posting.  Others, please welcome my class.
>>
>> --Mark 
>>
>> --Prof. Mark A. Yoder 
>>   Rose-Hulman Institute of Technology [4] 
>>
>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>> [2] http://elinux.org/index.php?title=Category:ECE497 
>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>> [4] http://www.rose-hulman.edu 
>>
>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Eric Morse]

Hi Dr. Yoder

On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com wrote:

> Hi Dr. Yoder,
>
> Looking forward to this quarter!
>
> -Emily
>
> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>
>> The purpose of this posting is to announce that I'm once again teaching 
>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>> the  *BeagleBone Black.* 
>> I'm teaching as open-source as I can and have have posted many of course 
>> materials on eLinux.org [2] and github[3].
>>
>> I'm always open to ideas on what topics to include in the class and 
>> suggestions for interesting course projects.  For example we are starting
>> Python this week and hope to be writing simple kernel module 5 weeks from 
>> now.  That will be followed by a week of PRU programming.
>>
>> Class, please respond to this posting.  Others, please welcome my class.
>>
>> --Mark 
>>
>> --Prof. Mark A. Yoder 
>>   Rose-Hulman Institute of Technology [4] 
>>
>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>> [2] http://elinux.org/index.php?title=Category:ECE497 
>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>> [4] http://www.rose-hulman.edu 
>>
>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[James Werne]

Hi Dr. Yoder,

Looking forward to this class!

-James W.

On Wednesday, September 2, 2020 at 4:37:43 PM UTC-4 mors...@gmail.com wrote:

> Hi Dr. Yoder
>
> On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com 
> wrote:
>
>> Hi Dr. Yoder,
>>
>> Looking forward to this quarter!
>>
>> -Emily
>>
>> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>>
>>> The purpose of this posting is to announce that I'm once again teaching 
>>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>>> the  *BeagleBone Black.* 
>>> I'm teaching as open-source as I can and have have posted many of course 
>>> materials on eLinux.org [2] and github[3].
>>>
>>> I'm always open to ideas on what topics to include in the class and 
>>> suggestions for interesting course projects.  For example we are starting
>>> Python this week and hope to be writing simple kernel module 5 weeks 
>>> from 
>>> now.  That will be followed by a week of PRU programming.
>>>
>>> Class, please respond to this posting.  Others, please welcome my class.
>>>
>>> --Mark 
>>>
>>> --Prof. Mark A. Yoder 
>>>   Rose-Hulman Institute of Technology [4] 
>>>
>>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>>> [2] http://elinux.org/index.php?title=Category:ECE497 
>>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>>> [4] http://www.rose-hulman.edu 
>>>
>>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[James Werne]

Hi Dr. Yoder,

Thank you for being open to teaching other topics! Looking forward to this 
quarter!

-James W.

On Wednesday, September 2, 2020 at 4:37:43 PM UTC-4 mors...@gmail.com wrote:

> Hi Dr. Yoder
>
> On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com 
> wrote:
>
>> Hi Dr. Yoder,
>>
>> Looking forward to this quarter!
>>
>> -Emily
>>
>> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>>
>>> The purpose of this posting is to announce that I'm once again teaching 
>>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>>> the  *BeagleBone Black.* 
>>> I'm teaching as open-source as I can and have have posted many of course 
>>> materials on eLinux.org [2] and github[3].
>>>
>>> I'm always open to ideas on what topics to include in the class and 
>>> suggestions for interesting course projects.  For example we are starting
>>> Python this week and hope to be writing simple kernel module 5 weeks 
>>> from 
>>> now.  That will be followed by a week of PRU programming.
>>>
>>> Class, please respond to this posting.  Others, please welcome my class.
>>>
>>> --Mark 
>>>
>>> --Prof. Mark A. Yoder 
>>>   Rose-Hulman Institute of Technology [4] 
>>>
>>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>>> [2] http://elinux.org/index.php?title=Category:ECE497 
>>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>>> [4] http://www.rose-hulman.edu 
>>>
>>

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[beagleboard] DLPDLCR2000EVM display

[Bill Barnett]

Will Linux Buster support the  DLPDLCR2000EVM
 display?   I need Python 3.6 for
numby support.

-- 

*Bill Barnett*

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[beagleboard] Newbie Project Assistance Requested

[Dave Byrnes]

Ladies and Gents

I am totally new to BeagleBone and the other controllers but have 
experience with PLCs, ladder logic and instrumentation from 25 years as 
Industrial Electrical Fitter.

Am learn by doing and prefer to dive into to learning through a desire to 
complete a practical project.

Hence I am , intitially after some pre-concept assistance on my first 
project. 

I want to build a eight to ten channel MOSFET switching module to control 
lighting and other accessories in a four wheel drive. The module would be 
located in the rear tub/canopy area of a ute/pick-up. I want to control the 
switching via a Touch screen mounted on the dashboard within reach of the 
driver. I would also like the switching module to have connection for 
two-to-four analog input channels in the future.

I want the touchscreen physically "wired" to the  switching module; HDMI? 
And when as my skills grow I would like to get a BlueTooth App to control 
the switching via a smarts phone.

After some research a BeagleBone looks, to me to be the best option as it 
has low power consumption.

Am I heading in the right direction and which BeagleBone should I use?

Would I be taking the best approach by sourcing the BB and the Touchscreen 
and then building the graphics and getting the programming right to carry 
out the output switching and recieveing the inputs (all via breadboard and 
simple LED etc) before moving to connection to the MOSFET output  and 
analog input boards?

What programming language should I be looking at using?

Thanks in advance. And I'm sure this will be the first of many questions?

Dave

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Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Niresh]

Hi Tarmo,
Thank you for your suggestion.

I have a few queries related to USB dongle connection to BBB and mutex
operation. Shall I ask that query in this post or separate?

Regards,
NK

On Wed, Sep 2, 2020 at 6:06 PM Robert Nelson 
wrote:

> On Wed, Sep 2, 2020 at 12:41 AM Niresh  wrote:
> >
> > Hi,
> > You are right, I've done a little experiment to confirm the same.
> >
> > Test #1: Made both system and RTC time synchronized with  2020-09-02
> 09:00:30 and then rebooted , both time syncs.
> >
> > Test #2: Made RTC time delay with an hour by using command hwclock --set
> --date "09/02/20 08:00:30 "and system time 2020-09-02 09:00:30 and then
> rebooted. Now, the system time is not sync with RTC,it remains unchanged
> 2020-09-02 09:00:30
> >
> > Test #3:   Made RTC time advance with an hour by using command hwclock
> --set --date "09/02/20 10:00:30 "and system time 2020-09-02 09:00:30 and
> then rebooted.   Now, the system time is sync with RTC, that's with
> 2020-09-02 10:00:30
> >
> > Could you please tell me starts from which version of kernel
> "BB-I2C2-RTC-DS3231.dtbo" device tree works. I will tell you why,  I was
> using arm-linux-gnueabihf-gcc-4.9 to compile my application code in the
> 4.4.30-ti-r64 kernel, and it compiled and ran perfectly. Now the same
> application code gives me an error message with compiler
> arm-linux-gnueabihf-gcc-8 in the new image 4.19.94-ti-r42.
> >
> > Like I said before, I am not a linux guy and the developer, who coded
> this and has left the organisation, cautioned me to stick with
> 4.4.30-ti-r64 kernel for stable operation of application code.  Please
> advise which version is good to go and how to overcome this issue.
>
> Can you share the actual "error message"?
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to a topic in the
> Google Groups "BeagleBoard" group.
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> .
>

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Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Niresh]

Hi,

The error messages during compiling of my smartmeter application code
written in c language are

/usr/bin/ld: rtc_time.o: relocation R_ARM_THM_MOVW_ABS_NC against `a local
symbol' can not be used when making a shared object; recompile with -fPIC

/usr/bin/ld: jsparser.o: relocation R_ARM_THM_MOVW_ABS_NC against `a local
symbol' can not be used when making a shared object; recompile with -fPIC

/usr/bin/ld: populateListFromFile.o: relocation R_ARM_THM_MOVW_ABS_NC
against `file1' can not be used when making a shared object; recompile with
-fPIC

/usr/bin/ld: readFromFileNPopulateList.o: relocation R_ARM_THM_MOVW_ABS_NC
against `file1' can not be used when making a shared object; recompile with
-fPIC

/usr/bin/ld: jsparser.o(.text+0x46): unresolvable R_ARM_THM_CALL relocation
against symbol `json_object_get_boolean'

/usr/bin/ld: final link failed: nonrepresentable section on output

collect2: error: ld returned 1 exit status

make: *** [Makefile:152: smartmeter] Error 1


Regards,

NK

On Wed, Sep 2, 2020 at 6:06 PM Robert Nelson 
wrote:

> On Wed, Sep 2, 2020 at 12:41 AM Niresh  wrote:
> >
> > Hi,
> > You are right, I've done a little experiment to confirm the same.
> >
> > Test #1: Made both system and RTC time synchronized with  2020-09-02
> 09:00:30 and then rebooted , both time syncs.
> >
> > Test #2: Made RTC time delay with an hour by using command hwclock --set
> --date "09/02/20 08:00:30 "and system time 2020-09-02 09:00:30 and then
> rebooted. Now, the system time is not sync with RTC,it remains unchanged
> 2020-09-02 09:00:30
> >
> > Test #3:   Made RTC time advance with an hour by using command hwclock
> --set --date "09/02/20 10:00:30 "and system time 2020-09-02 09:00:30 and
> then rebooted.   Now, the system time is sync with RTC, that's with
> 2020-09-02 10:00:30
> >
> > Could you please tell me starts from which version of kernel
> "BB-I2C2-RTC-DS3231.dtbo" device tree works. I will tell you why,  I was
> using arm-linux-gnueabihf-gcc-4.9 to compile my application code in the
> 4.4.30-ti-r64 kernel, and it compiled and ran perfectly. Now the same
> application code gives me an error message with compiler
> arm-linux-gnueabihf-gcc-8 in the new image 4.19.94-ti-r42.
> >
> > Like I said before, I am not a linux guy and the developer, who coded
> this and has left the organisation, cautioned me to stick with
> 4.4.30-ti-r64 kernel for stable operation of application code.  Please
> advise which version is good to go and how to overcome this issue.
>
> Can you share the actual "error message"?
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to a topic in the
> Google Groups "BeagleBoard" group.
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> https://groups.google.com/d/topic/beagleboard/m4hZYsA-d8M/unsubscribe.
> To unsubscribe from this group and all its topics, send an email to
> beagleboard+unsubscr...@googlegroups.com.
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> .
>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Aman Bajaj]

Hi Dr. Yoder,

Really excited about this class! Looking forward to some interesting 
projects

-Aman

On Wednesday, September 2, 2020 at 7:46:52 PM UTC-4 james...@gmail.com 
wrote:

> Hi Dr. Yoder,
>
> Thank you for being open to teaching other topics! Looking forward to this 
> quarter!
>
> -James W.
>
> On Wednesday, September 2, 2020 at 4:37:43 PM UTC-4 mors...@gmail.com 
> wrote:
>
>> Hi Dr. Yoder
>>
>> On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com 
>> wrote:
>>
>>> Hi Dr. Yoder,
>>>
>>> Looking forward to this quarter!
>>>
>>> -Emily
>>>
>>> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>>>
 The purpose of this posting is to announce that I'm once again teaching 
 an Embedded Linux class based on the BeagleBone[1]. This time I'm using
 the  *BeagleBone Black.* 
 I'm teaching as open-source as I can and have have posted many of 
 course 
 materials on eLinux.org [2] and github[3].

 I'm always open to ideas on what topics to include in the class and 
 suggestions for interesting course projects.  For example we are 
 starting
 Python this week and hope to be writing simple kernel module 5 weeks 
 from 
 now.  That will be followed by a week of PRU programming.

 Class, please respond to this posting.  Others, please welcome my class.

 --Mark 

 --Prof. Mark A. Yoder 
   Rose-Hulman Institute of Technology [4] 

 [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
 [2] http://elinux.org/index.php?title=Category:ECE497 
 [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
 [4] http://www.rose-hulman.edu 

>>>

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Re: [beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Subodh Harmalkar]

Looking forward to it. Thank you for teaching this class !!

On Wed, Sep 2, 2020, 11:52 PM Aman Bajaj  wrote:

> Hi Dr. Yoder,
>
> Really excited about this class! Looking forward to some interesting
> projects
>
> -Aman
>
> On Wednesday, September 2, 2020 at 7:46:52 PM UTC-4 james...@gmail.com
> wrote:
>
>> Hi Dr. Yoder,
>>
>> Thank you for being open to teaching other topics! Looking forward to
>> this quarter!
>>
>> -James W.
>>
>> On Wednesday, September 2, 2020 at 4:37:43 PM UTC-4 mors...@gmail.com
>> wrote:
>>
>>> Hi Dr. Yoder
>>>
>>> On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com
>>> wrote:
>>>
 Hi Dr. Yoder,

 Looking forward to this quarter!

 -Emily

 On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:

> The purpose of this posting is to announce that I'm once again
> teaching
> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
> the  *BeagleBone Black.*
> I'm teaching as open-source as I can and have have posted many of
> course
> materials on eLinux.org [2] and github[3].
>
> I'm always open to ideas on what topics to include in the class and
> suggestions for interesting course projects.  For example we are
> starting
> Python this week and hope to be writing simple kernel module 5 weeks
> from
> now.  That will be followed by a week of PRU programming.
>
> Class, please respond to this posting.  Others, please welcome my
> class.
>
> --Mark
>
> --Prof. Mark A. Yoder
>   Rose-Hulman Institute of Technology [4]
>
> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman
> [2] http://elinux.org/index.php?title=Category:ECE497
> [3] https://github.com/MarkAYoder/BeagleBoard-exercises
> [4] http://www.rose-hulman.edu
>
 --
> For more options, visit http://beagleboard.org/discuss
> ---
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> "BeagleBoard" group.
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> 
> .
>

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Re: [beagleboard] How to automatically set system time of BBB by external DS3231

[Tarmo Kuuse]

I'd recommend a new thread for a new topic.

--
Tarmo

On Thu, 3 Sep 2020, 06:34 Niresh,  wrote:

> Hi Tarmo,
> Thank you for your suggestion.
>
> I have a few queries related to USB dongle connection to BBB and mutex
> operation. Shall I ask that query in this post or separate?
>
> Regards,
> NK
>
> On Wed, Sep 2, 2020 at 6:06 PM Robert Nelson 
> wrote:
>
>> On Wed, Sep 2, 2020 at 12:41 AM Niresh  wrote:
>> >
>> > Hi,
>> > You are right, I've done a little experiment to confirm the same.
>> >
>> > Test #1: Made both system and RTC time synchronized with  2020-09-02
>> 09:00:30 and then rebooted , both time syncs.
>> >
>> > Test #2: Made RTC time delay with an hour by using command hwclock
>> --set --date "09/02/20 08:00:30 "and system time 2020-09-02 09:00:30 and
>> then rebooted. Now, the system time is not sync with RTC,it remains
>> unchanged 2020-09-02 09:00:30
>> >
>> > Test #3:   Made RTC time advance with an hour by using command hwclock
>> --set --date "09/02/20 10:00:30 "and system time 2020-09-02 09:00:30 and
>> then rebooted.   Now, the system time is sync with RTC, that's with
>> 2020-09-02 10:00:30
>> >
>> > Could you please tell me starts from which version of kernel
>> "BB-I2C2-RTC-DS3231.dtbo" device tree works. I will tell you why,  I was
>> using arm-linux-gnueabihf-gcc-4.9 to compile my application code in the
>> 4.4.30-ti-r64 kernel, and it compiled and ran perfectly. Now the same
>> application code gives me an error message with compiler
>> arm-linux-gnueabihf-gcc-8 in the new image 4.19.94-ti-r42.
>> >
>> > Like I said before, I am not a linux guy and the developer, who coded
>> this and has left the organisation, cautioned me to stick with
>> 4.4.30-ti-r64 kernel for stable operation of application code.  Please
>> advise which version is good to go and how to overcome this issue.
>>
>> Can you share the actual "error message"?
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> https://rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
>> You received this message because you are subscribed to a topic in the
>> Google Groups "BeagleBoard" group.
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>> https://groups.google.com/d/topic/beagleboard/m4hZYsA-d8M/unsubscribe.
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>> .
>>
> --
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> 
> .
>

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