STM32F100 enter standby mode

[christophe239955_stm1_stmicro]

Posted on August 17, 2010 at 10:41

STM32F100 enter standby mode

[Nickname12657_O]

Posted on May 17, 2011 at 14:02

Hi,

Could you please try our example

''STM32F10x_StdPeriph_Lib_V3.3.0\Project\STM32F10x_StdPeriph_Examples\PWR\STANDBY''  and let me know if you observe the same behavior.

Cheers,

STOne-32

[christophe239955_stm1_stmicro]

Posted on May 17, 2011 at 14:02

I found the problem in my code: forgot to enable the peripheral clock for the power control periphery.

now it works!

[gil2]

Posted on May 17, 2011 at 14:02

I've tried that example and currently do it like this:

...

   // Peripheral Clock - This is done in the init function, but I did it again here

   RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);

  

   // Enable WKUP pin

   PWR_WakeUpPinCmd(ENABLE);

   // Insert a delay  - I have also tried without this delay

   Delay(0xFFFF);   // for(; nCount != 0; nCount--);

   // Request to enter STANDBY mode and wake up with rising edge of WKUP pin  

   PWR_EnterSTANDBYMode();

   while(1)  

   {  

     // Infinite loop - It's OK because the system will reset anyways  

   }  

The unit does not wake up (reset).  I've tried with both the JTAG connected and not connected.

Port PA.0 (WKUP pin) has a pull-down resistor, leading to a momentary switch, with Vcc on the other side of the switch, which should be enought to generate the required rising edge when the button is pressed.

Thanks!