STM32 MCUs Products

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RTC wake up timer is not waking up MCU from the STOP mode

I am using STM32F091RCTx microcontroller and have configured RTC internal periodic wake up timer in interrupt mode. On timeout the respective isr routine is getting called but it is not waking up the MCU. i am not using SLEEP_ON_EXIT.Can anyone help ...

it1 by Associate
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Freertos low Power Run mode

Hi guys, I use stm32L4 and freertos, I try to make low power run mode in my project. Normally my mcu works 60Mhz but I want to reduce clock as much as possible in low power run mode like 1Mhz and I want to use freertos in low power run mode. I change...

Epamuk by Associate III
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  • 1 replies
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Sometimes LPTIM2 does not start when using one shot mode. I see this happened 4 years ago to another user and their question went unanswered. So I'll try. (STM32L4R5ZIT6)

// Code to start the one shot timer void set_delta_alarm(Long t) { LL_LPTIM_Enable(LPTIM2); while (0 == LL_LPTIM_IsEnabled(LPTIM2)) ; LL_LPTIM_SetAutoReload(LPTIM2, t); // * TE_SECOND / ONE_SECOND); LL_LPTIM_ClearFLAG_ARRM(LPTIM2); LL_LPTIM_Star...

RChap.1 by Associate II
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Resolved! Can a low power timer (LPTIM) drive an RGB LED in STOP mode?

MCU: STM32L4R9ZGJ6Hardware: Custom battery powered boardLED: ARGB1313HSDesired LED functionality: Blink, on/off, fade in/out ("Breathing")Hello,I am familiar with a regular timer and how they can drive a RGB LED using multiple channels (CCx registers...

DerekR by Senior
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  • 5 replies
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Launching option bytes bricks the MCU

Hi,I am trying to set the write protection on my STM32G071 uC. I found the explanation here on how to do it in code. However once HAL_FLASH_OB_Launch is executed, the debugger loses connection and the uC is bricked. I tried to get a connection again ...