STM 32 stop mode problem

macryant · ‎2009-09-23

Posted on September 23, 2009 at 13:29

macryant · ‎2011-05-17

Posted on May 17, 2011 at 13:24

Hi, all,

I am new to stm32.

I am developing a remote controller based on stm32F103RBT6. I want the RC to enter into stop mode when I press sleep.

By reference of ''UM0306 Reference Manual''(version June 2007) Page 39/519

before enter the stop, i need to set EXTI_PR and RTC Alarm flag to reset value by using:

EXTI->PR = 0x00;

RTC->CRL &= ~0x02;

PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);

but the current I got from the chip is around 1.7mA, which is quite far away from the standard stop mode current 24uA.

Any one can light me up with some ideas?

Great thanks.

tdacosta · ‎2011-05-17

Posted on May 17, 2011 at 13:24

Ensure that the ADC and DAC modules are disabled during stop mode. Also, check for any inputs that are driving against any pull-ups activated on the pins. Similarly, check for outputs driving against pull-downs on external devices.