Entering Sleep mode for STM32F103RBT6

[mhitchman-cc]

Posted on February 16, 2010 at 23:48

Entering Sleep mode for STM32F103RBT6

[mhitchman-cc]

Posted on May 17, 2011 at 13:40

hey guys, sorry about the simple question, I am a student and am still learning, any help would be greatly appreciated

[Tesla DeLorean]

Posted on May 17, 2011 at 13:40

Try looking at the ST Library code, typically in \Keil\ARM\RV31\LIB\ST\STM32F10x\stm32f10x_pwr.c

/*******************************************************************************

* Function Name  : PWR_EnterSTOPMode

* Description    : Enters STOP mode.

* Input          : - PWR_Regulator: specifies the regulator state in STOP mode.

*                    This parameter can be one of the following values:

*                       - PWR_Regulator_ON: STOP mode with regulator ON

*                       - PWR_Regulator_LowPower: STOP mode with

*                         regulator in low power mode

*                  - PWR_STOPEntry: specifies if STOP mode in entered with WFI or

*                    WFE instruction.

*                    This parameter can be one of the following values:

*                       - PWR_STOPEntry_WFI: enter STOP mode with WFI instruction

*                       - PWR_STOPEntry_WFE: enter STOP mode with WFE instruction

* Output         : None

* Return         : None

*******************************************************************************/

void PWR_EnterSTOPMode(u32 PWR_Regulator, u8 PWR_STOPEntry)

{

  u32 tmpreg = 0;

  /* Check the parameters */

  assert_param(IS_PWR_REGULATOR(PWR_Regulator));

  assert_param(IS_PWR_STOP_ENTRY(PWR_STOPEntry));

  /* Select the regulator state in STOP mode ---------------------------------*/

  tmpreg = PWR->CR;

  /* Clear PDDS and LPDS bits */

  tmpreg &= CR_DS_Mask;

  /* Set LPDS bit according to PWR_Regulator value */

  tmpreg |= PWR_Regulator;

  /* Store the new value */

  PWR->CR = tmpreg;

  /* Set SLEEPDEEP bit of Cortex System Control Register */

  *(vu32 *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set;

  /* Select STOP mode entry --------------------------------------------------*/

  if(PWR_STOPEntry == PWR_STOPEntry_WFI)

  {

    /* Request Wait For Interrupt */

    __WFI();

  }

  else

  {

    /* Request Wait For Event */

    __WFE();

  }

}

/*******************************************************************************

* Function Name  : PWR_EnterSTANDBYMode

* Description    : Enters STANDBY mode.

* Input          : None

* Output         : None

* Return         : None

*******************************************************************************/

void PWR_EnterSTANDBYMode(void)

{

  /* Clear Wake-up flag */

  PWR->CR |= CR_CWUF_Set;

  /* Select STANDBY mode */

  PWR->CR |= CR_PDDS_Set;

  /* Set SLEEPDEEP bit of Cortex System Control Register */

  *(vu32 *) SCB_SysCtrl |= SysCtrl_SLEEPDEEP_Set;

  /* Request Wait For Interrupt */

  __WFI();

}