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Sleep mode
27-11-2012, 10:59 AM, (This post was last modified: 27-11-2012, 10:59 AM by blinde.)
#1
Sleep mode
Hi.
Trying to enter sleep mode with the pic32-pinguino-otg.

The power comes from a battery. So Voltage is around 14V

I call asm("wait").
By default the current is ~20ma

If I enable the sleep mode (OSCCONbits.SLPEN = 1)
The current is ~10ma

Is there a way to decrease the 10ma ?
Is it the voltage regulator that is drawing it ?

Thanks

Chris
Reply
27-11-2012, 01:25 PM,
#2
RE: Sleep mode
In case you get no solution, try Olimex forum as it's their hardware isn't it.

John
Reply
30-01-2013, 11:05 AM,
#3
RE: Sleep mode
Hi, Chris. Did you get the answer from Olimex?

I tested OTG Rev-C and got similar result.

12V fed to Vin => 46.9mA (led off, just in delay())
12V fed to Vin => 24.0mA (in idle)
12V fed to Vin => 9.9mA (in sleep)

Now when 3.3V is fed to 3v3 pin, it takes 1.2mA in sleep. No wstage from red led, buck converter and li-poly charger.

Even more interesting part is that it draws 0.3mA when 3.7V is fed to battery connector.

It makes the board perfect for data logging -- wake up by RTCC, log and sleep...

dj

(27-11-2012, 10:59 AM)blinde Wrote: Hi.
Trying to enter sleep mode with the pic32-pinguino-otg.

The power comes from a battery. So Voltage is around 14V

I call asm("wait").
By default the current is ~20ma

If I enable the sleep mode (OSCCONbits.SLPEN = 1)
The current is ~10ma

Is there a way to decrease the 10ma ?
Is it the voltage regulator that is drawing it ?

Thanks

Chris
Reply
30-01-2013, 11:13 AM,
#4
RE: Sleep mode
Hi

See https://www.olimex.com/forum/index.php?t...icseen#new

But I have so many other issues that this became a minor issue for me Smile

Chris
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