Questions and discussions about the software that runs on the TD RF module itself.
hugo
 
Posts: 23
Joined: Tue Aug 04, 2015 8:28 am

low power mode

by hugo Thu Sep 24, 2015 1:16 pm

Hello,
In every TD example I tested(TD1205), the power stays at about 1.5mA. How to go to sleep mode and use few µA?
Thank you.
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lcheminade
 
Posts: 145
Joined: Mon May 11, 2015 7:47 am

Re: low power mode

by lcheminade Thu Sep 24, 2015 1:27 pm

This should not happen. Default state is low power ie a few µA. How do you power the TD1205 and measure the current?
hugo
 
Posts: 23
Joined: Tue Aug 04, 2015 8:28 am

Re: low power mode

by hugo Thu Sep 24, 2015 1:57 pm

Oh, you are right, it was just leaking from the debug probe. now back to normal values. Sorry!
hugo
 
Posts: 23
Joined: Tue Aug 04, 2015 8:28 am

Re: low power mode

by hugo Thu Sep 24, 2015 3:18 pm

What about the accelero event example?
It consume at the sample rate some energy. But if it works on interupt, it should just use 0. How to really wake the processor on the real interuption?
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lcheminade
 
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Re: low power mode

by lcheminade Thu Sep 24, 2015 3:25 pm

Well the accelerometer still needs to consume energy when configured in irq. You just save the efm the need to wake up for polling data. So the EFM still consumes 1.2µ because it is in EM2 and then you need to add the accelerometer consumption which depends on the ODR.

The SDK is low conso. We did everything we could so that it would go into the lowest energy mode required by your application.
hugo
 
Posts: 23
Joined: Tue Aug 04, 2015 8:28 am

Re: low power mode

by hugo Thu Sep 24, 2015 3:41 pm

So the peak of current is only from the accelerometer, at the ODR. That's fine, I thought this component would had a more stable power use. Thank you for doing your best about power consumption!
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