AN2629 datasheet(23/43 Pages) STMICROELECTRONICS

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AN2629

Power and wakeup time measurement

Doc ID 13922 Rev 2

23/43

Hardware environment

●

Sleep, Stop and Standby (With RTC OFF): the measurement of the power

consumption is made by replacing jumper JP9 in the STM3210B-EVAL board by an

ammeter and by powering the board from an external supply, or by using the USB

cable.

●

RTC powered by VBAT: the measurement is made by connecting an external power

supply to the pin 2 of jumper J11. The ammeter is then connected in series.

Firmware description

The firmware provided is divided into the following files:

●

File main.c:

This file contains the main firmware body. The user can select the needed low-power

mode by uncommenting the respective line:

/* Define the Low power mode*/

//#define SLEEP

//#define SLEEP_ALLPERIPH_ENABLE

//#define SLEEP_ALLPERIPH_DISABLE

//#define STOP

//#define STOP_Regulator_ON

//#define STOP_Regulator_LowPower

//#define STANDBY

//#define RTC_ON

●

hw_config.c and hw_config.h files:

These files contain all functions related to the configuration of the STM32F10xxx (clock

configuration, peripheral enable/disable, I/O configuration, etc.).

To select the way the Sleep and Stop mode are entered (WFI or WFE), uncomment the

corresponding line in the hw_config.h file:

/* Define the entry to the low power mode */

//#define Entry_WFE

//#define Entry_WFI

To select the needed clock configuration for Sleep mode, uncomment the

corresponding line in the hw_config.h file:

/* Define the clock settings */

#define HSE_PLL_ON

#define HSE_PLL_ON_72MHz

//#define HSE_PLL_ON_48MHz

//#define HSE_PLL_ON_36MHz

//#define HSE_PLL_ON_24MHz

//#define HSE_PLL_ON_16MHz

//#define HSE_PLL_OFF

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