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STM32L151 stop mode problem!

michelemancini2
Associate III

‎2013-07-10 12:51 AM

Posted on July 10, 2013 at 09:51

Hi,

I want to try to send stm32l1 in stop mode (in my experiment I want it never wakes up).

My code works but the current is not

equal

to datasheet!!

In the datasheet the uC in stop mode is around ~2uA

In my experiment I have ~15uA!!

This my code:

int main()

{

SystemInit();

SystemCoreClockUpdate();

PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);

while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET) ;

RTC_ITConfig(RTC_IT_WUT, DISABLE);

LCD_Cmd(DISABLE);

while (LCD_GetFlagStatus(LCD_FLAG_ENS) == SET);

//******************************************** GPIO IN LOW MODE ********************************************

GPIO_InitTypeDef GPIO_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB,ENABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC,ENABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD,ENABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOH,ENABLE);

/* Configure all GPIO port pins in Analog input mode (trigger OFF) */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GPIOA->MODER = 0xFFFFFFFF;

GPIOB->MODER = 0xFFFFFFFF;

GPIOC->MODER = 0xFFFFFFFF;

GPIOD->MODER = 0xFFFFFFFF;

GPIOE->MODER = 0xFFFFFFFF;

GPIOH->MODER = 0xFFFFFFFF;

/* all GPIOA */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;

GPIO_Init(GPIOA, &GPIO_InitStructure);

/* All GPIOC except PC13 which is used for mesurement */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;

GPIO_Init(GPIOC, &GPIO_InitStructure);

/* all GPIOB except PB6 and PB7 used for LED*/

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All ;

GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All ;

GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All ;

GPIO_Init(GPIOH, &GPIO_InitStructure);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,DISABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB,DISABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC,DISABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD,DISABLE);

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOH,DISABLE);

PWR_PVDCmd(DISABLE);

//******************************************** RUN 4 Mhz in low power ********************************************

PWR_FastWakeUpCmd(DISABLE);

SetHSICLKToMSI(RCC_MSIRange_6,NoDIV2,WITHRTC) ;

SysTick->CTRL = 0;

RCC->APB1ENR = 0;

PWR_UltraLowPowerCmd(ENABLE);

while(1){

/* Enter Stop Mode permanently !!!!*/

PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);

}

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3 REPLIES 3
Amel NASRI
ST Employee

‎2013-07-10 01:28 AM

Posted on July 10, 2013 at 10:28

Hello Michele,

The pins configuration isn't so clean compared to the comments. This config should be enough to put pins in analog input mode: 

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOG,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOH,ENABLE); 
GPIOA->MODER = 0xFFFFFFFF; 
GPIOB->MODER = 0xFFFFFFFF; 
GPIOC->MODER = 0xFFFFFFFF; 
GPIOD->MODER = 0xFFFFFFFF; 
GPIOE->MODER = 0xFFFFFFFF; 
GPIOF->MODER = 0xFFFFFFFF; 
GPIOG->MODER = 0xFFFFFFFF; 
GPIOH->MODER = 0xFFFFFFFF; 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOE,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOG,DISABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOH,DISABLE);

I listed all ports and depending on your package you can choose only the available ones. This is just for check, not sure it is the problem root cause. -Mayla-

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

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michelemancini2
Associate III

‎2013-07-10 03:02 AM

Posted on July 10, 2013 at 12:02

I have checked,

I have 64pin I have this port: 

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD,ENABLE); 
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOH,ENABLE);

All ports are disable but I have 15uA

instead of

~2uA
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michelemancini2
Associate III

‎2013-07-10 04:35 AM

Posted on July 10, 2013 at 13:35

target

reached

! now <2uA !!

The code work but the difference are the order of function:

before (~15uA):

//RUN 4MHZ

  PWR_FastWakeUpCmd(DISABLE);

  SetHSICLKToMSI(RCC_MSIRange_6,NoDIV2,WITHRTC) ;     

  SysTick->CTRL = 0;     

  RCC->APB1ENR = 0;

  PWR_UltraLowPowerCmd(ENABLE);  

 

After(<2uA)

//RUN 4MHZ 

  PWR_FastWakeUpCmd(DISABLE);

  PWR_PVDCmd(DISABLE);

  PWR_UltraLowPowerCmd(ENABLE);

  RCC->APB1ENR = 0;

  SysTick->CTRL = 0;      

  SetHSICLKToMSI(RCC_MSIRange_6,NoDIV2,WITHRTC) ;

   

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