STM32F0x1 Sleep Mode Conundrum

On Tue, 04 Mar 2014 20:49:39 +0000, John Devereux wrote:

> Uwe Bonnes <bon@hertz.ikp.physik.tu-darmstadt.de> writes:
> 
>> Tim Wescott <tim@seemywebsite.really> wrote:
>> ...
>>> My power consumption is still about two orders of magnitude above what
>>> I want, but I think that's a board problem, not the processor.
>>
>> Any floating lines? They draw much unwanted current.
> 
> errata says something about excess current for analog pins on certain
> packages
> 
> "Additional current consumption in the range of tens of &mu;A per pin can
> be observed if VDDA is higher than VDDIO"
> 
> <http://www.st.com/st-web-ui/static/active/jp/resource/technical/
document/errata_sheet/DM00058837.pdf>

Already noted, not an issue.  I am using the ADCs, but VDDA is tied do 
VDDIO.  The application is such that the measurement process goes 1: 
everything stops, 2: the ADCs get sampled.

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Tim Wescott <tim@seemywebsite.really> wrote:

> I found some, and figured out the magic finger-ring combination to go 
> really to sleep.

Come on, tell us what is needed!
-- 
Uwe Bonnes                bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

On Tue, 04 Mar 2014 22:47:43 +0000, Uwe Bonnes wrote:

> Tim Wescott <tim@seemywebsite.really> wrote:
> 
>> I found some, and figured out the magic finger-ring combination to go
>> really to sleep.
> 
> Come on, tell us what is needed!

It's in another post -- I had the systick clock running, which apparently 
preempts trying to turn off the core.

And for some bizzare reason I need to call WFE twice in a row.  I don't 
know why -- but it's working now.

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com