Stm32 stop mode. In Stop mode, all clocks in the 1.

Stm32 stop mode The controller goes to Stop . Hi, I am currently working on a bluetooth application developing it on STM32WB55 Nucleo (FW version V1. 3 %âãÏÓ 1 0 obj >stream endstream endobj 2 0 obj > endobj 4 0 obj >/Parent 2 0 R/Contents[14 0 R]/Type/Page/Resources >/ProcSet[/PDF/Text/ImageC]/Font Purchase the Products shown in this video from :: https://controllerstech. 说明 本文主要叙述在stm32进入stop时如何保持最低功耗的问题，并对部分细节问题进行分析整理。STM32L提供5种 低功耗模式 ：低功耗运行模式、睡眠模式、低功耗睡眠模式、停止模式、待机模式。 待机模式电流最低，但是待机模式时的 MCU 处于不受控制的状态，所有的IO口都工作在高阻抗的状态的下 一、知识普及 STM32L0休眠模式3. store______________________________________________________________________________ Currently, I am working on optimizing current consumption by using STOP Mode of the STM32L053C6T6 processor. stop唤醒后是STOP模式前的MSI频率（频率在RCC_ICSCR设定） PS. The only difference is that you should use the implementation of stm32_lpm_if. The ST driver does not have a stop function, you To exit from Stop Mode, any GPIO configured as EXTI can be used to wakeup the device. 时钟，时钟越低 【经验分享】STM32L0系列单片机低功耗(STOP)使用+RTC唤醒+LPUART(DMA方式 マイコン徹底入門:周辺回路編:STM32のペリフェラルを活用: 10. LPBAM (only for 从STOP唤醒后： 1. These must be manually r Posted on December 28, 2017 at 07:42 Hello, I'm facing an issue i cannot figure out. The RMs explain how to enter it, but I'm unclear on RCC effects. You will find there some guidelines for power optimization. 8 V domain, preserving the contents of the registers and SRAM in Standby mode, the regulator is powered off. This allows you to simple put STM32F4 into SLEEP, STOP or STANDBY mode. For instance: In STM32L4 STOP0 and STOP1 retain all of the RAM, while STOP2 may power down part or all of the RAM to save power. First of all, I would like to explain the algorithm in a very simplified The are basically 3 classes of “Stop Mode” that processors have, with different effects on the system. We should have a very low STOP mode current draw of 1. Have I would like to put STM32F030K6T6 into STOP mode (low power mode), in which there should be current consumption around 5 μA. The voltage regulator can be configured either in normal or low-power mode. The high flexibility in power 一、停止模式介绍停止模式是在Cortex™-M3的深睡眠模式基础上结合了外设的时钟控制机制，在停止模式下电压调节器可运行在正常或低功耗模式。此时在1. 3, in most of the cases the DMA cannot be used in combination with the Stop mode, hence all DMA channels have to be disabled before entering Posted on October 14, 2014 at 11:13 Hi all!I faced problem with STM32L151 and i hope to find some useful considerations. When 最近在使用STM32做了停止模式以达到低功耗的目的，其中有一点不理解的地方：1. I use the LSI with no prescaler (I can change this of course), so the clock period would be 31,25 us. I'm currently working on a stm32l073 and using the following RTOS : RIOT-OS. 2uA) and then turn on again I'm using an STM32L051R8 in STOP mode with a 32. 8V供 stm32有三种低功耗模式，功耗依次降低： 睡眠模式（sleep mode），停止模式（stop mode），待机模式（standby mode）。 睡眠模式： 只有内核时钟关闭，外设仍在运行；可以通过任意一个中断或唤醒事件唤醒；唤 I'm looking for the low power function of the STM32F103TB. There are several Just to be aligned, you are talking about "Chapter 7 - Using the Stop and Standby mode in battery operated applications". after 5 seconds So far this works well for the first loop through - I see the LED turn on, turn off after 1000ms, stay off for 5 seconds (current draw drops to approx. This is a minimum example of stop mode usage in an STM32L011 with wakeup on GPIO (via EXTI). So I thought, sacrifice some uA in exchange for not ha Different STM32 families handle RAM retention in STOP mode differently. You want decrease current on device. 각각 sleep, Stop mode로 들어가기 전에 외부 clock HSE를 비활성화해야 하는 경우, 먼저 시스템 클럭 소스를 HIS로 전환한 다음 HSE비트를 지워야 한다. You must either create complex synchronization between tasks, and possibly create a “managing” Yep. I'm looking for guidance on entering and exiting Stop mode. There is update. 8 μA 停机模式：实时 【经验分享】STM32--实测STM32L0低功耗停机(stop)模式-1. 3) Reinitialize clocks. After having all my application working with standbye mode awake by the RTC alarm, I checked that my application can not have floating pins. 8 V domain are stopped, the PLL, the HSI and the HSE RC oscillators are disabled. Now my problem is that stop mode is not entered reliably (or it wakes up too early which I cannot differentiate). However for my application I need to leave one GPIO pin enabled as an EXTI to wake up the MCU. 介绍STM32具有多种低功耗模式，当前以STM32L4系列的低功耗模式最为丰富，此处基于STM32L476和STM32CUBEIDE环境介绍停止模式（STOP）管脚事件唤醒的实现(HAL库）。 Posted on October 28, 2016 at 12:09 Someone does know STM32 L series ? I would like to know something about Low power mode. I use stop mode with RTC. When i wake up from stop mode, UART seems to be desynchronized because wrong characters are displayed. , it's stuck. 1 (processor: STM32F405RG) + Arduino IDE ver. I have checked the pending IRQs in NVIC aft STM32 series Mode from which the STM32 can be woken up by USART LPUART STM32C0 Stop mode N/A STM32F0, STM32F3 Stop mode (with the main regulator in Run mode or in low‑power mode) STM32G0, STM32G4, STM32WBA Stop 0 and Stop 1 Hi @Pieter Conradie , The AN4899 (STM32 GPIO configuration for hardware settings and low-power consumption) provides a detailed description of the various GPIO modes. The problem is following. in Stop mode, the regulator supplies low power to the 1. 功耗情况 stop0 , stop1 , stop2. 从stop和standby模式唤醒或复位后，会启用MSI作为系统时钟。 2. I'am using the STOP2 mode in stm32wb55 microcontroller. GPIOによるモード復帰: 10. 4uA, and in standby mode, it is 4. For this type of stop mode, if you don stm32有三种低功耗模式，功耗依次降低： 睡眠模式（sleep mode），停止模式（stop mode），待机模式（standby mode），三种模式概述如下 1）stm32的低功耗模式简介 睡眠模式：只有内核时钟关闭，外设仍在运行；可以通过任意一个中断或唤醒事件唤醒；唤醒后回到睡眠的位置向后执行。 一定時間経過後RTCからの割り込みをトリガにRunモードに復帰して色々しようとしたところ、どうもSTOP2に入らずすぐに次のRunモード部分に飛んでいるようだった。 色々コードをいじってみたが直らず、ある時成功したかと思いきや、同じコードを書きこみなおすと再び症状が現れた(！ 在实际应用中，需要根据具体情况选择适合的低功耗模式，并进行相应的设置和实现。(2) 停机模式(Stop Mode)：关闭所有外设和CPU时钟，但保留内部寄存器状态，可通过外部中断、唤醒定时器、RTC或WKUP引脚实现唤醒。(3) 待机模式(Standby Mode)：关闭所有外设和CPU时钟，清除内部寄存器状态，可通过WKUP引 \$\begingroup\$ Since RAM is preserved across STOP mode, you can probably get rid of the HAL_UART_MspInit(&hlpuart1); and MX_GPIO_Init();. 88977]/Type/Page/Resources >/XObject How to solve the ADC problem when exiting stop mode in STM32WB5 in STM32 MCUs Wireless 2025-04-07 "make -j8 all" terminated with exit code -1 in STM32CubeIDE (MCUs) 2025-04-03 STM32G4 not waking from STOP1 in STM32 MCUs Products 2025-03-25 Hello @Tombedded and welcome to the Community :smiling_face_with_smiling_eyes:, Can that be the reason? >> Yes it can be! In fact, as it is mentioned in the AN4635 in section 4. Most STM32 MCUs have these low power modes in common: A simple low power mode that only shuts off the core, has a fast wake-up time. 8uA. #include <WioL Enter Stop mode Have RTC Wakeup Timer return me to Step 1. Exiting from all the low power states requires some bits/flags to be cleared. 2) Go in stop mode. The problem is, as soon as we use the RTC Alarm just once and although the alarm already fired during NORMAL operation, the current consumption is ~20 uA in STOP mode. 由以上的资料可以知 按功耗由高到低排列，STM32具有运行、睡眠、停止和待机四种工作模式。 上电复位后 STM32 处于运行状态，当内核不需要继续运行，就可以选择进入后面的三种低功耗模式降低功耗，这三种模式中，电源消耗不同、唤醒时 可以通过任意外部中断进行唤醒 (在外部中断寄存器中设置)，此模式下被唤醒后单片机先执行外部中断函数，然后接着上次进入停止模式的语句位置继续往下执行。 功耗最低的一种模式， 该模式关闭电压调节器，整个1. On my tests I set the MCU to stop1 mode for five seconds by: STM32 Embedded Voltage Regulators There are two embedded linear voltage regulators that supply most of the digital circuitries in STM32 microcontrollers: the main regulator (MR) and the low-power regulator (LPR). I used CubeMX to initialize the timer with interrupt. I have noticed that when i'm de Hi. RTC is configured with periodic wake-up timer. 4 uA @ 3 VCC. Assuming you started from BANKA being fully configured as analog input ( please make sure you did that in software as PA13, PA14, PA15 are not configured in analog mode out of reset), it is likely that the GPIO you selected is either wrongly configured or connected to Posted on October 30, 2016 at 23:31 I'm using Nucleo-STM32L053R8 and trying to get I2C slave mode to work along with stop mode. I'm using HSI16 for I2C1 and the CPU. 1. 2 Run mode can support a system clock running at up to 80 MHz, with only 120 µA/MHz. I read the code of the AN2629, there has no interrupt routine code. 5mAも食ってしまうのであまり意味がない。 Stopモードは 内蔵LDOを LowPowerモードにすると、 14uAということになっている。 I using an STM32 (L0 5) HAL I need to disable IWDG or WWDG before entering in STOP mode. 8V供电区域的的所有时钟都被停止，PLL、HSI和HSE RC振荡器的功 STOP2 and STANDBY modes are great way to achieve uA and sub-uA consumption. 3 V and the voltage regulator range 1. 27563 841. I want to disable The IWDG when the device is in Standby mode. The speed and On the ammeter current consumption in stop mode is recorded as 7. 1, BLE Stack Full) Since the device will have to be connected to a battery, I was researching the use of Low Power modes. It works well before entering stop mode. In this tutorial, we’ll discuss The STM32 Stop Mode, how to enter (Stop0, Stop1, Stop2) modes in STM32 microcontrollers, and how to exit from Stop modes (Wakeup) with some code examples and a full test project. Stop mode gives a low level power STM32 – Low Power – Stop Mode The objective is to create a Stop Mode switch with automatic wake-up after 500ms, on Serial event and on external GPIO event (external interrupt). GPIO によるモード復帰 低電力モード: 10. It depends which tool you are using to make power measurement. Unfortunately, I'm not clear on the correct procedure to send in STOP2 After this, if I trigger GPIOA - PIN4, nothing happens. In addition, STM32U5 devices support a battery backup domain, called VBAT. I am also able to get this working on the STM32G0 Nucleo board with FreeRTOS. I don't know which low power mode I should choose? Features: As low power consumption as posii 4 Operation modes The different operation modes are used to assess the impact of the memory interface settings on the performance and power consumption. I'm having some problems with the STOP mode of STM32F030F4P. I'm using I2C1. I have some questions about this function: 1. 功耗逐次更低。 通过上图可以得出结论： stop0 模式有 2 种电压调节器方案。 stop 1 2 只有一种. All measurements have been done using V CC = 3. 0V供电) 低速运行190uA/MHz 6μA低功耗运行模式，32kHz运行频率 3. In that case the power consumption is in the range of 2. 低電力モードの種類 STM32 には 3 種類の低電力モードがあります (表 16?1)。SLEEP モードは CPU クロックのみをオンにし、周辺回路は有効にしたままとするモードです。 CPU の消費電力を抑える一方で、タイマには波形 Posted on November 14, 2017 at 22:09 Hello. I also use external line to wake up from Stop mode. STOP モード 10. 4) Restart drivers. In my project I use battery. I would like to extend work time on battery. I'm facing a problem that I can not get through, and I'm very happy if you can help. 3 %âãÏÓ 1 0 obj >stream endstream endobj 2 0 obj > endobj 3 0 obj >/Contents[14 0 R]/BleedBox[0 0 595. I followed the stm example code and got the desired behavior with a power consumption of 10 µA. 100 stop mode) Here is my code. And I've encountered incomprehensible situations which SPI2 在说低功耗之前，先要明白一个东西，那就是stm32中的事件和中断。 事件是中断的触发源，开放了对应的中断屏蔽位，则事件可以触发相应的中断。在STM32中，中断与事件不是等价的，一个中断肯定对应一个事件，但一 STM32提供了三种低功耗模式，分别是睡眠模式（Sleep Mode）、停止模式（Stop Mode）和待机模式（Standby Mode），我们在做一些电池供电项目的时候，低功耗模式显得尤为重要。 进入的方法很简单，直接调用库函数：PWR_EnterSTOPMode(PWR_Regulator,PWR_STOPEntry_WFI),退出的方法是用外部中断方式唤醒即可。退出STOPMode后，根据手册说明，会自动选择HSI作为sysclock,因此如果系统之前采 这段时间正在磨一个项目，要求系统中STM32F0系列的芯片不工作时处于一个低功耗，要用几个月，所以需要研究下stm32F0的低功耗模式。 经过了解，STM32F0芯片与其他STM32F1系列一样，有休眠（Sleep）、停机（Stop）和待机（Standby）三个模式，相应的功耗如下图。可见，休眠模式 Posted on January 07, 2014 at 17:37 I develop a lot of low power applications using STM32 and I'd like the ability to use the debugger while in low power STOP mode. STM32L4 devices support 8 main low‐power modes: Low‐power run, Sleep, Low‐power sleep, Stop 0, Stop 1, Stop For library 39, I made a low power modes library. For WWDG usage this is much I have the (somehow) same problem, so it's what I 一、知识点：1. Between advertising packets, the STM32WB should enter Stop Mode 2. %PDF-1. I am running STM32L412 microcontroller in low power GSM design. When using an RTOS, the tasks must synchronize when to go to deepsleep, especially to STANDBY mode, which requires most hardware modules to be re-initialized. L4, but probably applies more broadly. 5. STOP モードへの移行 STOP モードに入るには、PWR_EnterSTOPMode 関数 (ライブラリ 16?1) を実行します。 ライブラリ 16? 1 Hello, The p2p_server application is advertising at startup. It's very weird. This mode is good for interrupt Instead you have to rely on an ammeter or a simple LED to indicate which state the MCU is in. When stm32f103 is waken up from stop mode by other pins but touch Int. IO口的状态，不用的IO口设置成模拟输入。2. 5uA（RTC开启+外部中断唤醒 对RCC部分进行重新初始化。否则会影响系统性能。从手册上_stm32f429如何退出stop STM32 专栏收录该内容 26 篇文章 订阅专栏 进入的方法很简单，直接调用库函数：PWR_EnterSTOPMode(PWR_Regulator,PWR_STOPEntry_WFI Solved: I'm using a WB55 with IWDG enabled. On four gpio I have an EXTI (two of them only increment the variable), two of them change the state of the variable to the opposite (buttons). I also don't think you need to explicitly disable all the clocks, entering STOP mode should automatically gate them, so Posted on September 19, 2016 at 17:13 Hi, I am new to programming the stm32 chips and I want to use the LPTimer to wake up from Stop mode. T K-LXS: 我在进入STOP前把LCD的IO都改成输入了。退出STOP后都重新初始化了但是LCD还是没显示是怎么回事呢 51单片机非阻塞串口中断收发数据 山东徐大侠: 当缓存的数组被占用才会等一下，你可以使用二维数组扩充缓 在物联网设备、电池供电的传感器节点等场景中，低功耗设计是延长设备寿命的关键。STM32F103C8T6作为一款经典的Cortex-M3微控制器，提供了三种低功耗模式：Sleep、Stop和Standby。本文将深入解析这三种模式的 Exiting from stop mode requires reinitialization of clocks and peripherals, see the STM32 RM. In 文章浏览阅读693次，点赞10次，收藏3次。【代码】关于stm32的STOP模式。_stm32 stop模式 项目需求，需要实现设备低功耗功能，实现过程中遇到几个问题，以此记录总结。（stm32f103ret6） 问题一：执行PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI);后，程序继续 技術ノート（日本語）： STOPモード の復帰要因 お気に入りに登録 STOPモードの復帰要因 日本語版の最新版ダウンロード STM32 (32bit マイコン) Arm ® Cortex ®-M マイコン STM32マイコン概要 ハイパフォーマンス STM32N6シリーズ 在一些使用电池供电的场合中，经常会涉及低功耗的技术。低功耗技术是指通过一些手段，使得系统在不影响功能的前提下，尽可能地降低功耗，延长电池的使用寿命。STM32系列单片机提供了多种低功耗模式，其中最常用的是STOP模式。通过前面的实验，可以实现STM32G0系列单片机实现低功耗（STOP模式 Dear All, I'm using stm32G0 MCU for battery operated application and I2C, UART and RTC and GPIO are using I want know What should be peripheral state before going to STOP mode mean "should be deinit before going to stop mode Moved this to new thread. Point of this modes is simple. 2 μA低功耗睡眠模式，一个计时器工作 0. The contents of the registers and SRAM are lost except for those concerned with the 1. My code works as expected in release mode (i. (STM32F40x Reference manual P. All works great, but I would also want to add watchdog just in case. 먼저, pin reset을 해주고 난 뒤에 stop mode로 들어갑니다. GPIO によるモード復帰 10. I have cleared the IWDGSTDBY bit using I am confused by your post, because IWDSTBY and IWDGSTOP do exist for all low power STM32 devices %PDF-1. When I start using FreeRTOS on the STM32L073, I am getting timer interrupts on the sys Mastering STM32 With more than 600 microcontrollers, STM32 is probably the most complete ARM Cortex-M platform on the market. MR is used in the Run and Sleep modes and in the Stop 0 mode. 低電力モード: 10. 文章浏览阅读5. no debugger) but when debugging as soon as the processor enters STOP mode it exits STOP i am trying to measure the power consumption of the MCU in my custom board with different sleep modes, while measuring the stop2 mode i am getting consumption of 110 uA in the datasheet its showing of 2 uA ,even for shutdown and standby mode also its consuming that current. But whatever I do the current consumption is STM32を低消費電流モードにする実験をした。 STM32の使いやすい低消費電流モードは Stopモードだと思う。 Sleepモードは、全周辺をDisableにしても 72MHz時 7. STOPモード: 10. 8. So when we use the RTC alarm and the PA0 (wake-up pin) to wake up the MCU, where the MCU recover from after the stop mode enter 在一些使用电池供电的场合中，经常会涉及低功耗的技术。低功耗技术是指通过一些手段，使得系统在不影响功能的前提下，尽可能地降低功耗，延长电池的使用寿命。STM32系列单片机提供了多种低功耗模式，其中最常用的 절전모드에 대해서Stm32에서는 sleep, stop, standby 3가지의 절전모드를 지원한다. But I also want to wakeup using the external interrupt, whenever external interrupt generated by the LIS2DE12. N in my project where I use stop mode, I would like to configure 4 ways to wakeup. In main, execution loops on turning the LED on for 1 second, entering STOP 2 mode and then the RTC waking Hello. At 26 MHz, the consumption is even lower: 100 µA/MHz. c as there are some RCC registers that may be accessed by both Cores when entering low power mode at the same time so it is required to use some 本节我们来讲一讲stm32的电源控制，也就是低功耗模式。 1）stm32的低功耗模式简介 stm32有三种低功耗模式，功耗依次降低： 睡眠模式（sleep mode），停止模式（stop mode），待机模式（standby mode）。 睡眠模式：只有内核时钟关闭，外设仍在运行；可以通过任意一个中断或唤醒事件唤醒；唤醒后回到睡眠 STM32 stop模式实验 Stop模式： 特性： 1、所有时钟关闭；2、调压器要么正常工作要么进入低功耗模式；3、SRAM和寄存器值能保持；4、IO引脚状态跟运行模式是一样；进入stop模式： 1、为了更减少功耗，内部调压器可以进入低功耗模式； Introduction The STMicroelectronics family of ultra-low-power MCUs utilize a low-leakage technology and an optimized design in order to achieve outstandingly low current consumption, making them ideal for battery powered and energy harvesting applications. I'm developing on Wio LTE Cat. So this is about STM32G070, STOP –mode, peripherals and current consumption. e. 현재는 GPIO설정한것이 적고 별다른 통신내용이 들어가있지 않지만, 많은 것들이 연결된 상황이라면 통신 UART등도 꺼줘야 합니다. The lowest impact mode stops the system clock, and thus most of the peripherals, but everything keeps its configuration. 3k次。STM32 低功耗停止模式（STOP）管脚事件唤醒实现及优化1. External and internal interrupts play a vital role in exiting from low power states. In case of battery powered device every possibility to lower current consumption is welcome. To reduce power consumption, I want to use stop mode. 88977]/Type/Page/Resources >/XObject STM32L0低功耗应用STM32L0支持7种低功耗模式，本文重点讨论停止(STOP)模式。首先介绍几点影响功耗的因素。1. 当调用库函数进入待机模式 最后的最后，提醒你一下，ST官网或者STM32CUBE的资源包里面包含有各种例程，你说的这种stop模式EXTI退出是有官方例程的，可以下个资源 Hi. It %PDF-1. 功耗逐次更低. The application uses Auto-wakeup (AWU) from low STM32L4 系列提供了 3 种停止模式：stop0 , stop1 , stop2. In order to take full advantage of the low-power capabilities of these devices, it is necessary to know Sleep, Stop 0, Stop 1, Stop 2, Stop3, Standby and Shutdown modes. 768KHz external crystal (LSE) that drives the RTC. I'm using interrupt mode for the I2C. STOP モード （一）低功耗模式介绍STM32三种低功耗模式：睡眠模式停止模式待机模式1、睡眠模式 只有内核时钟关闭并且停止运行，外设都还在运行。可以通过任意一个中断或 【经验分享】STM32 F1系列HAL库低功耗STOP和STANDBY模式唤醒（RTC时钟唤醒+外部 文章浏览阅读833次。STM32 L4系列单片机低功耗模式（STOP模式）_stm32l4 stop模式 最近做一个物联网的项目，由于功能比较多，为了简化程序逻辑，所以使用了FreeRTOS操作系统，MCU为STM32L431。FreeRTOS的源码只实现了sleep级别低功耗模式（需要定义#define configUSE_TICKLESS_IDLE 1），此模式只有CPU停止运行，功耗有 マイコン徹底入門:周辺回路編:STM32のペリフェラルを活用: 10. 1st attempt: I want I2C slave to wake up the MCU when it's stopped. I am able to get my code working while I am not using FreeRTOS on the STM32L073. 6uA. But at this point, I can't seem to We have a very weird behavior in a battery powered IoT device. 13. The below code is working fine until IWDG is resetting the MCU from STOP mode. All other clocks and peripherals are still active. This book aims to be the first guide around that introduces the reader to this exciting MCU portfolio from ST Microelectronics and 위 코드는 stop mode에 들어갈때 입니다. When I I am trying to enter stop mode 2 and have it woken up by LPTIM1. The most important part is to 我目前用STM32F030K6測試stop mode功能，沒有外接任何OSC（HSE, LSE）跳出方式是使用EXTI的方式來離開stop modeST example code有類似的功能，但都是用LSE當stop mode時 STM32F030進入與跳出stop mode的作法 Introduction The STM32’s integrated RTC (Real-Time Clock) peripheral can be used to periodically wake it up from one of the various Low Power modes. If you are working on battery The ultra-low-power product family, varying between the STM32 series, may support up to 6 low-power modes: Sleep mode Low-power Run mode Low-power Sleep mode Stop 0, Stop 1, Stop 2, Stop 3 modes Standby mode Shutdown mode 2. In Stop mode, all clocks in the 1. STM32低功耗一共有三种模式：（1）睡眠模式：功耗高，任意中断，任意事件唤醒（2）停机模式：功耗较低，可以任意外部中断和RTC闹钟唤醒（3）待机模式： 【经验分享】STM32低功耗（STM32G0+HAL库+STOP模式+中断唤醒） ,ST意法 The Stop mode is based on the Cortex-M3 deepsleep mode combined with peripheral clock gating. I recommend: 1) Stop drivers before entering stop mode. Each mode can be configured in many ways, providing several additional sub-modes. I have set the RTC to generate periodic wakeup interrupts every X seconds, It's working. I am in STOP2 mode most of the time, and I am waiting for interrupts from GSM module or MEMS IRQ I configured IWDG for 30s reset, I reload it just before slee I am trying to use stop mode with the STM32L073 chip. The probability stop mode is entered seems to depend on LPTIM1 configuration. If I don't enter stop mode, then the interrupt operates normaly, that is it'll enter the interrupt handler. PLL oscillators other than HSI or MSI (depending on family) are disabled and deselected. standy唤醒后是MSI的默认值； stop总结： MSI RC 提供了低功耗的时钟源，用于在低耗模式下降低 Basically, CPU1 shall handle sleep/stop low power mode has this will be done on any STM32 single core product with no worry of CPU2. After exiting stop mode, I reset the clock tree using systemclock_config. If I remove LCD sleep code, it works. in sleep and active mode a 1. マイコン徹底入門:周辺回路編:STM32 のペリフェラルを活用: 10. 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