STM32 MCUs

Hello,We have been using CANbus as our form of communication for a system with multiple nodes. Each node was individually tested with CAN and all of them work without issue. However, when we started system integration testing, we noticed significant noise on the CANbus channel that caused data to stop. To give more details, we are running 2 battery packs, a power electronics DC/AC converters (to create a 120Vac signal) and a central supervisory controller, which are all using STM32 MCUs to communicate to each other via CANbus. We are using an STM32H7AGI6, STM32F401RE, STM32F303RE. When we send a CANbus command to start the DC/AC converter, that is when the noise appears and we cannot communicate with the MCUs until the DC/AC converter is turned off. We have termination resistors at the end of the bus and I have verified that the 60 Ohm resistance is seen on the bus. I've also attached a copy of our schematic for the CANbus, which all of the nodes use (except that the 120 Ohm

Hi,Have this working on STM32F302R8 but cannot seem to get my SD Card working on an STM32F446RE. Using hal 0.23.0 with stm32F446 and embedded-sdmm 0.9.0); let sd_mosi = gpiob.pb15.into_alternate::<5>(); let sd_miso = gpiob.pb14.into_alternate::<5>(); let sd_sck = gpiob.pb13.into_alternate::<5>(); let mut sd_spi = Spi::new( dp.SPI2, (Some(sd_sck), Some(sd_miso), Some(sd_mosi)), Mode { polarity: Polarity::IdleLow, phase: Phase::CaptureOnFirstTransition, }, 400.kHz(), &mut rcc, ); let sd_spi_dev = ExclusiveDevice::new_no_delay(sd_spi, sd_cs).unwrap(); rprintln!("Reading file..."); let num_bytes = sdcard.num_bytes().unwrap(); rprintln!("SD Card Size: {} bytes", num_bytes);Which gives[2026-03-01T05:30:04.085Z, +020837ms] panicked at both_test/src/main.rs:184:40: [2026-03-01T05:30:04.085Z, +020837ms] called `Result::unwrap()` on an `Err` value: CardNotFoundVery new to all this but certain of wiring. The SD Adaptor has an Ams117 chip but I have tried in

We've been using STiROT + OEMuROT for STM32H7S on our system, with our own application.The secure bootloader handles most of its functionality very well, and the security aspects in particular. The scripts provided by ST were very helpful, as was the documentation on the ST wiki. We are grateful to ST for providing these.However, it proved extremely challenging to get the secure bootloader working with our application, mainly because the secure bootloader makes a number of important assumptions about the user application which are not documented.These unstated assumptions initially prevented our application from running, and it took a considerable amount of time and effort to solve all the problems associated with them.AssumptionsThe main assumptions are:OEMuROT assumes that the application will use the same clock setup as itself (especially PLL1 and PLL2): as documented in a separate post, we needed to change the clock settings in our application compared to OEMuROT, and thi

  After more debugging, the jump function works correctly (PC reaches 0x080208xx, SP and RST are valid), but the app never sends any UART message after jump — even with SystemClock_Config() completely commented out and only HAL_Init() + MX_UART_Init() remaining. The bootloader resets the clock to HSI before jumping. SCB->VTOR is set in SystemInit(). Linker is at 0x08020000. The app works perfectly when flashed directly at 0x08000000 via ST-Link. Something is killing the app immediately after the bootloader jumps but we can't figure out what — any ideas?this is the project : https://github.com/said-sketch/Flashing-by-UART---STM32-Bootloader/tree/main  

Dear STMicroelectronics Community,I am experiencing a critical issue with my NUCLEO-144 STM32N657X0 EVAL BRD following an attempted ST-LINK firmware upgrade.During the ST-LINK upgrade process (via STM32CubeProgrammer), the upgrade became stuck and did not complete successfully. After this, the board became non-operational.Current behavior:The board is no longer accessible via ST-LINK (SWD).Flashing is not possible using STM32CubeProgrammer (ST-LINK connection fails).The target MCU cannot be detected or programmed.Powering the board via the on-board USB still works, but no flashing/debugging is possible.The ST-LINK interface appears unresponsive / corrupted.Actions already attempted:Power cycling the boardTrying different USB cables and portsUsing STM32CubeProgrammer CLI and GUIAttempting connection with different reset modes (UR / HWrst / HotPlug)Verifying BOOT0/BOOT1 configurationsUsing macOS (USB device intermittently detected)It appears the ST-LINK firmware may be corrupted due to t

use stm32h743 with eth and a LTE moderm.OS theadx and netxduo ....eth works well I can't find where to congfig ppp, How to select serial port ,and so on.I search the  forum and find no answer.

求助篇！使用主控芯片STM32F405RGT6 在操作flash后 复位指令不起作用 这是什么问题呢？////////////////////以下是代码段/////////////////////////////*注释以下语句就可以自动复位成功*/Translation:I'm using STM32F405RGT6 microcontroller, the reset command doesn't work after flash operation. What could be the problem?HAL_FLASH_Unlock(); if (HAL_FLASH_Program(TYPEPROGRAM_WORD, FWR_ADDR, 0) != HAL_OK) { printf("Clear OTA flag error\n"); } else { HAL_Delay(10); uint32_t flag_sttus = HAL_FLASH_GetError; if(flag_sttus & HAL_FLASH_ERROR_PGA) { printf("flash_err!\r\n"); } printf("Clear OTA flag\n"); } HAL_FLASH_Lock();请各位大佬看看是什么情况 感谢！！！！Translation:Could someone please take a look and tell me what's going on? Thanks

Hello everyone,I’m working on a project with the STM32H750B-DK board using TouchGFX and FreeRTOS. I need serial output via the onboard ST‑LINK Virtual COM Port for debugging. According to the board documentation, the VCP is connected to USART3 on PB10 (TX) and PB11 (RX).The problem:In CubeMX, I select USART3, set mode to Asynchronous, and assign PB10/USART3_TX and PB11/USART3_RX. However, in the pin configuration table, these pins remain with "n/a" in the GPIO mode column, the "Modified" checkbox stays unchecked, and they are not configured as Alternate Function Push‑Pull. The generated code therefore never initializes these pins correctly, and I get no output on the VCP.What I have tried:Resetting the pins (PD8, PD9, PC10, PC11) that were previously assigned to USART3.Right‑clicking on PB10/PB11 and selecting "Signal Unpinning" to remove any locks.Manually setting the Alternate Function to AF7 via the right‑click menu.Changing the GPIO mode in the table from "n/a" to "Alternate Functi

Hello. When I press to Run (Run main.c) button, STM32CubeIDE opens random file, possibly, from current repository, for example: startup_stm32l452xx.s, core_cm4.h etc... Code is loading successful, but this side effect bothers me. I would like to disable this function. How can I do it? If you need more information about this behavior please, ask. Thank you for reading.

 Hi. I am new to STM32 microcontroller. I started with STM32Cube IDE. So far everything is good until a build of a template project failed. I changed the directory structure of template project and moved folders Src, Inc and Startup to project root and removed Core folder. Now project wouldn't build. Although it generates binaries but with errors. I have also updated the Include paths in project properties but linker keeps failing. This is not a big deal I can move everything back to its original position and it will compile and link without any issue. I am just curious that what is missing. Just want to know what is going wrong. This is the error I am getting multiple times.STM32CubeIDE_2.0.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.100.202509120712/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: STM32CubeIDE_2.0.0/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-st

To follow up this thread, CTS signal on USB CDC - STMicroelectronics Community I'm experiencing a similar issue. USBser.sys  have some problem 1. Only DTR Break can control alone you can set  DTR is 1  or 0,  but  RTS have change，RTS only change with DTR. 2.  CDC Serial State I  have test this code,  it  send from Endpoint 81h successfully,  but  PC USB Host  have no message CDC_IN_Buf[0] = 0xA1; /* bmRequestType 0xA1 (10100001B) */ CDC_IN_Buf[1] = 0x20; /* 0x21 (SERIAL_STATE) */ CDC_IN_Buf[2] = 0x00; /* wValue LowByte */ CDC_IN_Buf[3] = 0x00; /* wValue HiByte */ CDC_IN_Buf[4] = 0x00; /* wIndex LowByte Default 0 */ CDC_IN_Buf[5] = 0x00; /* wIndex HiByte */ CDC_IN_Buf[6] = 0x02; /* wLength LowByte Serial State Length 0x0002 */ CDC_IN_Buf[7] = 0x00; /* wLength HiByte */ CDC_IN_Buf[8] = 0x14; /* Data LowByte */ CDC_IN_Buf[9] = 0x00; /* Data HiByte */ /* CDC Serial State bit define (USB CDC 1.1 6.3.5 ) bit0 bRxCarrier 0x

Excited to see a new connector on new STM32 Nucleo 144 boards like the Nucleo-H5E5ZJ. Is the Connector intended for customers to design their own modules only, or will ST offer a module as well?   PS: I still hope to also see a Qwiic connector, or at least a footprint for it, on Nucleo boards some time in the future. 

Hello!I've was following this tutorial on Jtag locking for stm32h573RI using j-link. link to tutorial: How to enable RDP-like product state flash protect... - STMicroelectronics CommunityI made it to the updating the product state to 17 and was in the process of reconnecting under hot plug mode, however I didn't have success reconnecting. I get these 4 errors: To Note: I was able to flash initially with no issues. I've been trying to update the jlink version on the stm32cubeprogrammer and have had no luckI have updated my jlink version locally to 9.18vThank you for the any suggestions :D

One small issue I have. I have a custom STM32F411CEU6 board, quite similar to the WeAct Black Pill in terms of connections, except for the fact that I have a LED on pin PB13, and whenever I try to blink it using:while (1) { /* USER CODE END WHILE */ HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_13); HAL_Delay(500); /* USER CODE BEGIN 3 */ } in the STM32CubeIDE, everything works fine and dandyThe moment i switch to using the Arduino Framework, albeit with the Arduino IDE or PlatformIO, with parameters of:platform = ststm32 board = genericSTM32F411CEusing the code:#define LED PB13 void setup() { pinMode(LED, OUTPUT); } void loop() { digitalWrite(LED, HIGH); delay(1000); digitalWrite(LED, LOW); delay(1000); }or anything similar, it just doesn't work! It always says the upload is successful, and it verifies successfully too! But why then, it refuses to work? Any suggestions?

Can Mesh network be implemented on a STM32 WB05KZ? If yes, how? I don't see any available examples in the STM32CubeWB0 MCU package.

Hi everyone,I’m working on an STM32U5G9 using USBX + ThreadX.I was able to make the device work as:MSC onlyCDC-ACM onlyMSC + CDC-ACM simultaneouslyThat part is fine. What I need now is more dynamic behavior: start the device as MSC, and when a button is pressed, stop USB, change the class to CDC-ACM and restart it (long term I’d like to switch arbitrary combinations of classes, but for now switching from MSC to CDC-ACM is the goal.)From what I understand, I must stop USB so the host will re-enumerate using the new device descriptor, and I’m OK with that. However, every approach I tried ends in a HardFault when I restart with the other class. I suspect I’m missing a call or doing things in the wrong order.How I start the device (this works):/* Start device with MSC only (initial boot) */ /* First I insert CLASS_TYPE_MSC is "UserClassInstance" variable in ex_device_descriptors.c (not shown here), then: */ ux_device_stack_initialize(...); /* Register MSC-only */ ux_device_stack_class_regi

Current Setup:MCU: STM32H7 with FreeRTOSToolchain: VSCode + STM32 VS Code Extension + ST-LinkThe Problem: Currently, the STM32Cube RTOS panel and the RTOS STATE view only update when the debug session is paused. When the CPU is running, the RTOS table either shows "No RTOS detected" or is filled with ??? and 0x????????.For a complex H7 project with LwIP and multiple tasks, I need to monitor stack usage (especially EthIf which has hit 0B free stack) and task states in real-time to catch the exact moment of a crash that occurs after 1 hour of operation.Questions for the Community:VSCode Limitation: Is there any hidden setting in the official STM32 VS Code Extension to enable automatic/live refreshing of the RTOS thread table while the CPU is running?Alternative Extensions: Are there any 3rd-party VSCode extensions (e.g., Cortex-Debug with specific RTOS scripts) that support live RTOS kernel awareness better than the official one?Alternative IDEs: If VSCode cannot do this, which IDE (Keil

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Hello,What is the correct layout for the .tsv file for the STM32N6 with application?In this tutorial the FlashLayout.tsv is shown, however it only has the FSBL program in it. I cannot figure out what Id to use for the Appli (also Appli non secure), i tried 0x05 but i get error:Error: unable to get the associate alternate setting of partition ID: 0x 5 Error: please make sure that your alternate settings have string descriptors with the right format Error: unable to switch to partition with index: 0x05This document describes the Id's but i don't think that any of them apply, and the document is for the MPU's anyway.Thanks!

Hello, I have a question about STM32CubeMX regarding the STM32U5G7VJT6 MCU.STM32CubeMX 6/17.0 indicates that a non-existent SMPS power supply must be enabled for the STM32U5G7VJT6.However, this is the version without the 'Q' specified in the part number:Q = Dedicated pinout supporting SMPS step-down converter.When I call SystemPower_Config(), the microcontroller does not work; without calling this function, it works fine.Is this a bug in the STM32CubeMX, assuming only Q versions of this MCU exist?Best regards, Jack

Hello ST experts,I configured an STM32H745 dual core to read data from ADC1/ADC2 in dual mode. I dedicated the M7 core to initialize ADCs, timer and DMA. But after running the code it seems that the ADC is not working either DMA.  I used the similar code on the STM32H750 single core. The code is correct.I think I have to configure extra settings for dual core such as managing the memory. Could you please help me.The DMA is in circular mode with "Word" data length.TIM2 triggers the ADCs. 

Hi ST team,Is VREFINT in STM32C011F4P6 internally fixed and stable, independent of VDDA fluctuations?If VDDA fluctuates (for example due to LDO load or battery discharge), will the ADC raw readings change proportionally because ADC reference = VDDA?Is it officially recommended for STM32C0 users to read VREFINT periodically and compute real VDDA to correct all ADC channels, especially when VDDA is not stable? Example : - ADC accuracy change if VDDA fluctuation like 3.3v to 2.9v. ? or it can take ref from Vrefint ?