Power saving mode

[TheShadowOfTriumph]

Hi everyone.

I'm currently building a battery-powered device, so it's only natural that I started exploring STOP MODE. Due to issues with the buttons in the simulator (they don't trigger the EXTI interrupt), I wanted to create a component with multiple checkboxes to indicate which STM32 blocks can be turned off and which events trigger the wake-up.
I believe this feature will be important and useful for use with various battery-powered devices.

[chipfryer27]

Hi

Further to a previous reply I changed the target to a 32F030Nucleo64 and can simulate the interrupt. Which target are you using?

Regards

[TheShadowOfTriumph]

The update arrived now and the program works. I don't want to roll back.
The target is STM32F030F4P6.
Now, how about the STOP MODE?

[BenR]

Hello,

You could try calling these using a C icon.

Code: Select all

HAL_SuspendTick();
HAL_PWREx_EnterSTOP0Mode(PWR_SLEEPENTRY_WFI);

Some information on it here.
https://deepbluembedded.com/stm32-stop- ... op1-stop2/

[TheShadowOfTriumph]

After entering in STOP0, EXTI interrupt block is still working?

[LeighM]

Here's a target demo ...

STM32F411BP_STOP_DEMO.fcfx

(9.99 KiB) Downloaded 9 times

Note, this won't simulate

[LeighM]

This is the C icon code from the demo, it also compiles OK on 32F030,
I don't have 030 hardware to test it, although it worked fine on 411 so should also work on 030
Hope it helps

Code: Select all

// Example to enter Stop Mode
HAL_SuspendTick(); // Stop SysTick to prevent immediate wakeup
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
// NOW STOPPED
// WAKES HERE ON INTERRUPT (EXTI)
SystemClocksSetup(); // Resume high speed mode
HAL_ResumeTick();    // Resume SysTick