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saml21: add lpm implementation#3019

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OlegHahm merged 1 commit intoRIOT-OS:masterfrom
kaspar030:saml21_add_lpm
Sep 2, 2015
Merged

saml21: add lpm implementation#3019
OlegHahm merged 1 commit intoRIOT-OS:masterfrom
kaspar030:saml21_add_lpm

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@kaspar030 kaspar030 commented May 18, 2015

(depends on #3018)

Adds lpm modes to the SAM L21 port.

Idle power consumption goes down from 1.5mA to ~0.7mA. Sleep power consumption is <2uA.

@kaspar030 kaspar030 added State: waiting for other PR State: The PR requires another PR to be merged first Area: drivers Area: Device drivers labels May 18, 2015
@jonas-rem jonas-rem mentioned this pull request May 20, 2015
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@kaspar030 kaspar030 added CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR and removed State: waiting for other PR State: The PR requires another PR to be merged first labels Aug 4, 2015
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PeterKietzmann commented Aug 20, 2015

Sorry for the delay in here. I overlooked this one several times and currently don't find much time for that, even if I'm still really interested in spending more thoughts in low power modes. @kaspar030 is the lpm implementation similar to that in #2309 ? That we we could maybe kill two birds with one stone.
Other than that: I don't have the hardware to test that.
@bapclenet are you aware of this PR?

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biboc commented Aug 27, 2015

@PeterKietzmann, I'm aware of this PR, I work on something else for the moment and I wanted to come back on #2309 as soon as I have time to do it. You're right this PR will certainly help if it works correctly. And I don't have a SAML21 as well

@kaspar030 kaspar030 added this to the Release 2015.08 milestone Aug 27, 2015
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kaspar030 commented Aug 27, 2015

I think we should get this in the release. It is the world leader in low-power 32bit MCUs...

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OlegHahm commented Aug 29, 2015

@kaspar030, are you sure? I thought that was rather energy micro?

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OlegHahm commented Sep 2, 2015

needs a rebase to make Travis working

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kaspar030 commented Sep 2, 2015

  • rebased

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OlegHahm commented Sep 2, 2015

ACK and go!

OlegHahm added a commit that referenced this pull request Sep 2, 2015
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Merge pull request #3019 from kaspar030/saml21_add_lpm
37e3197 
saml21: add lpm implementation
@OlegHahm OlegHahm merged commit 37e3197 into RIOT-OS:master Sep 2, 2015
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biboc commented Sep 3, 2015

@kaspar030, Could you share some results concerning energy consumption by comparing the different modes implemented?
And also the way you do your tests? I had a quick look at the SAML21 power mode and there are lot more option than those provided by RIOT to save energy.
As soon as I can, I will try to make the equivalent edit as you did on the SAMR21 and try to see if I obtain equivalent results.

@kaspar030 kaspar030 deleted the saml21_add_lpm branch September 3, 2015 12:23
@OlegHahm OlegHahm added the Area: pm Area: (Low) power management label Dec 13, 2015
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Area: drivers Area: Device drivers Area: pm Area: (Low) power management CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR

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