Hi Kumar,

On Wed, Oct 30, 2019 at 02:05:36AM -0500, Kumar Gala wrote:

On Oct 29, 2019, at 5:08 AM, jan@kloetzke.net wrote:

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded
example is the most interesting one to the Zephyr community (even
though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple
dependent Zephyr images then we can try to setup some Bob recipes
that builds the same thing...

/Jan

You can take a look at the open-amp sample, it creates 2 zephyr images:

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/subsys/ipc/openamp

I'm currently preparing some recipes. It will post them with some
instructions how to build in the next days once I got it working...

Regards,
Jan

Hi Sebastian,

On Thu, Oct 31, 2019 at 09:17:01AM +0000, Sebastian Boe wrote:

AFAICT it heavily integrates with bash making it a no-go.

IMHO this depends on what Bob should be used for in the context of
Zephyr. At the BoF session most people agreed that the Multiimage
problem goes beyond Zephyr alone. If Bob (in the current version) is a
viable alternative really depends on the use case.

To what degree does Bob require Linux tools like bash?

At the moment bash is still a hard requirement. There are some other
unix tools required but this is going away in the future.

It is not an option to introduce bash as a dependency for Windows users.

You can use Bob on Windows via MSYS2, though. But I agree that this may
not be an option for everybody at the moment.

Can it be used without bash?

This is in the works. Windows support is definitely on the agenda
because there are a bunch of people that have the same requirement. The
(currently stale) PR

https://github.com/BobBuildTool/bob/pull/258

will be updated in the coming weeks. This requires some amount of
refactoring internally so its taking some time. The idea is to make Bob
independent of the acutally used scripting language. The first step is
to support PowerShell on Windows and then maybe Python for
cross-platform scripts.

Regards,
Jan

________________________________________
From: devel@lists.zephyrproject.org <devel@lists.zephyrproject.org> on behalf of Kumar Gala via Lists.Zephyrproject.Org <kumar.gala=linaro.org@lists.zephyrproject.org>
Sent: Wednesday, October 30, 2019 8:05 AM
To: jan@kloetzke.net
Cc: devel@lists.zephyrproject.org
Subject: Re: [Zephyr-devel] ELC-E Zephyr Multiimage BoF - Bob Build Tool

On Oct 29, 2019, at 5:08 AM, jan@kloetzke.net wrote:

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded example is the most interesting one to the Zephyr community (even though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple dependent Zephyr images then we can try to setup some Bob recipes that builds the same thing...

/Jan

You can take a look at the open-amp sample, it creates 2 zephyr images:

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/subsys/ipc/openamp

- k

AFAICT it heavily integrates with bash making it a no-go.

________________________________________
From: devel@lists.zephyrproject.org <devel@lists.zephyrproject.org> on behalf of Sebastian Boe via Lists.Zephyrproject.Org <Sebastian.Boe=nordicsemi.no@lists.zephyrproject.org>
Sent: Thursday, October 31, 2019 9:57 AM
To: jan@kloetzke.net; kumar.gala@linaro.org
Cc: devel@lists.zephyrproject.org
Subject: Re: [Zephyr-devel] ELC-E Zephyr Multiimage BoF - Bob Build Tool

To what degree does Bob require Linux tools like bash?

It is not an option to introduce bash as a dependency for Windows users.

Can it be used without bash?

________________________________________
From: devel@lists.zephyrproject.org <devel@lists.zephyrproject.org> on behalf of Kumar Gala via Lists.Zephyrproject.Org <kumar.gala=linaro.org@lists.zephyrproject.org>
Sent: Wednesday, October 30, 2019 8:05 AM
To: jan@kloetzke.net
Cc: devel@lists.zephyrproject.org
Subject: Re: [Zephyr-devel] ELC-E Zephyr Multiimage BoF - Bob Build Tool

On Oct 29, 2019, at 5:08 AM, jan@kloetzke.net wrote:

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded example is the most interesting one to the Zephyr community (even though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple dependent Zephyr images then we can try to setup some Bob recipes that builds the same thing...

/Jan

You can take a look at the open-amp sample, it creates 2 zephyr images:

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/subsys/ipc/openamp

- k

To what degree does Bob require Linux tools like bash?

It is not an option to introduce bash as a dependency for Windows users.

Can it be used without bash?

________________________________________
From: devel@lists.zephyrproject.org <devel@lists.zephyrproject.org> on behalf of Kumar Gala via Lists.Zephyrproject.Org <kumar.gala=linaro.org@lists.zephyrproject.org>
Sent: Wednesday, October 30, 2019 8:05 AM
To: jan@kloetzke.net
Cc: devel@lists.zephyrproject.org
Subject: Re: [Zephyr-devel] ELC-E Zephyr Multiimage BoF - Bob Build Tool

On Oct 29, 2019, at 5:08 AM, jan@kloetzke.net wrote:

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded example is the most interesting one to the Zephyr community (even though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple dependent Zephyr images then we can try to setup some Bob recipes that builds the same thing...

/Jan

You can take a look at the open-amp sample, it creates 2 zephyr images:

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/subsys/ipc/openamp

- k

On Oct 29, 2019, at 5:08 AM, jan@kloetzke.net wrote:

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded example is the most interesting one to the Zephyr community (even though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple dependent Zephyr images then we can try to setup some Bob recipes that builds the same thing...

/Jan

You can take a look at the open-amp sample, it creates 2 zephyr images:

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/subsys/ipc/openamp

- k

Hi,

I am trying to implement IPv4 based multicast listener application. Please let me know, if there are any sample applications in Zephyr that involve joining to a multicast group and listening on a port. 

Thanks & Regards,
Giri.

Cancelled: Zephyr Project: APIs

This event has been cancelled.

When:
Tuesday, 29 October 2019
9:00am to 10:00am
(UTC-07:00) America/Los Angeles

Where:
https://zoom.us/j/177647878

Organizer: devel@...

Description:
Join from PC, Mac, Linux, iOS or Android: https://zoom.us/j/177647878

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 Live meeting minutes: https://docs.google.com/document/d/1lv-8B5QE2m4FjBcvfqAXFIgQfW5oz6306zJ7GIZIWCk/edit?usp=sharing

Hi,

I think the https://github.com/BobBuildTool/bob-example-embedded example is the most interesting one to the Zephyr community (even though it's using FreeRTOS+Linux at the moment).

If you guys have a particular example that already builds multiple dependent Zephyr images then we can try to setup some Bob recipes that builds the same thing...

/Jan

You can find the documentation for the tool here - http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/scripts/partition_manager/partition_manager.html

There were also references to a “partition manager” application/script.
Anybody have a reference to that?

--
Henrik Brix Andersen

From the ELC-E Zephyr MultiImage BoF hosted by Marti there was some reference to using a tool like bitbake. There was mention of a tool called Bob.

Sending a reference here for all the be able to look at Bob:

https://bobbuildtool.dev/

- k

Hello Zephyr community,

I'm working on an nrf52832 based project with Zephyr and am looking to implement two PWM channels with variable phase-offset. As far as I can tell, the nrfx drivers don't expose any sort of phase control explicitly nor does Zephyr's PWM library. Some options I've found directly within the nordic environment are using PPI or using the sequence_values table:

https://devzone.nordicsemi.com/f/nordic-q-a/48884/possible-to-create-pwm-phase-delay
https://devzone.nordicsemi.com/f/nordic-q-a/43597/pwm-drive-how-to-generate-pwm-signals-that-are-phase-shifted-90-degree

One key requirement for me is that the phase offset is not fixed - i.e. i want to be able to sweep both PWM channel frequencies and adjust the phase offset of the second channel on the fly, with the goal of a waveform that looks approximately like this:

Period: 333us
PWM0 sequence: On for 100us, off for 233us
PWM1 sequence: Off for 100us, on for 100us, off for 133us

Crude text based representation (that might not display well on all environments) below of 2 periods of this signal:

           Period
           -------- 
PWM0 |  |____|  |____
PWM1 __|  |____|  |__

Is there a clean way to do this? I'm thinking the PPI triggered start of PWM1 for the phase offset, but if there is a way to do this without engaging the lower level nordic libraries that would be ideal.

Thank you,

Matt

Reminder: Zephyr Project: Dev Meeting

When: Thursday, 24 October 2019, 8:00am to 9:00am, (GMT-07:00) America/Los Angeles

Where:https://zoom.us/j/993312203

An RSVP is requested. Click here to RSVP

Organizer: devel@...

Description: Join Zoom Meeting
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Meeting ID: 993 312 203
Find your local number: https://zoom.us/u/ankEMRagf

Here’s the agenda topics for this week:

Board flash partitions can't be tested in tree [erwan]
https://github.com/zephyrproject-rtos/zephyr/issues/20070

How to use flash with varying erase block size [erwan]
https://github.com/zephyrproject-rtos/zephyr/pull/14041

New, orthogonal and complete time conversion API: [Peter/Andy]
https://github.com/zephyrproject-rtos/zephyr/pull/19591

If there’s anything else to add please let me know.

Thanks

- k

Wooo. It's nice work.

-Steven

Awesome guys, might have to start hacking on PowerPC again!!

- k

Nice work! :)

--
Sent from my Android device with K-9 Mail. Please excuse my brevity.