Others: STM32 MCUs related

I am using open bootloader in stm32g0b1kct6 and when i am flashing it and then flashing application code over CAN it is only working while debugging and as soon as i flash application code it stopped working. Both are working fine in debugging but not when hex flashed and also when bootloader is working in debugging and i flash application code it stopped working immediately.

Hello ST Community,I am starting a new project using the NUCLEO-N657X0-Q development board with the STM32N657X0 MCU, and I would like to get some guidance on the correct workflow for programming and developing applications for this board.I have experience working with other STM32 devices and Nucleo boards using STM32CubeMX/CubeIDE, STM32 HAL and ST-LINK, but the STM32N6 architecture and boot/programming flow seem to be different from the STM32 families I have worked with before.I would like to clarify the following points:What is the recommended procedure to create, compile, program and debug a basic application on the NUCLEO-N657X0-Q? What software versions are currently recommended? For example, STM32CubeMX, STM32CubeIDE, STM32CubeProgrammer and the corresponding STM32N6 software packages. What is the correct boot configuration for development? In particular, how should BOOT0/BOOT1 and the relevant jumpers be configured when using ST-LINK for programming and debugging? What is the re

Hello everyone,I am currently developing with the STM32N6570-DK and utilizing the hardware ISP. I am facing an issue with the embedded Auto Exposure (AE) algorithm's convergence time. It currently takes about 20-30 frames (~1 second) for the AE to settle on the correct exposure and gain. For my application, it is critical that the very first frame upon wake-up is perfectly exposed, meaning a 1-second delay is not acceptable.To bypass this feedback loop, I have integrated a Texas Instruments OPT3001 Ambient Light Sensor (I2C) to implement a feed-forward solution. My intended sequence is: Read the absolute ambient lux from the OPT3001 on boot. Map this lux value to a pre-calibrated Lookup Table (LUT) to determine the ideal Exposure Time and Sensor Gain. Force the STM32 ISP into manual exposure mode and inject these values directly. Start the camera stream to achieve a zero-delay, perfectly exposed first frame. I have a few questions regarding the best way to implement this within t

Hi,We are using STM32L496RGT6, VDD voltage is 1.8V, our device is low power device, max current available on 1.8V is 13mA. We are using Segger flasher for flashing .hex file to MCU by SWD and Speed 4000kHz. Now while flashing MCU, it takes around 36mA current. Setting as follows, can we reduce programming power by changing any setting in flasher tool.  

I am using the starm-clang with cmake.I need to use multithreading lock. I understand that in standard PICOLIBC the locking functions are included but just as stubs and "weak" defined and you need to override the functions and define new implementations to use them.I tried to do this but I get all kinds of "duplicate symbols" errors when I link.Are you doing something special with the STARM_PICOLIBC library?Is the locking functions already implemented and functional in you version of PICOLIBC? 

Hello STM Community,I am trying to achieve live camera streaming using STM32H723VGT6, but I am unable to get the result for USB_UVC, Ethernet, using esp32 wifi, if there is any help available, please share it. Also, do share any GitHub link if available.  I am using the Weact mini STM32H723VGT6 board, and I have connected a camera module OV2640 to it.I have referred to the GitHub link below, which is for the H743 controller, but it hasn't shown any expected results. https://github.com/WeActStudio/MiniSTM32H7xx   Any guidance from ST engineers or Community members would be very helpful.Thank you in advance.

Hi everyone,I am working on a project using BNO085 IMU sensor and STM32H7A3ZIT6Q. I have a single sensor working but stuck at 44Hz. The same sensor with SparkFun library on ESP32 achieves 1.2ms read time. I need help understanding why and how to match ESP32 performance on STM32.Hardware:NUCLEO-H7A3ZI-Q (STM32H7A3ZIT6Q, Cortex-M7 @ 280MHz)Adafruit BNO085 breakout boardI2C on PB8 (SCL), PB9 (SDA), PC0 (INT pin)P0 and P1 tied to GND (I2C mode, address 0x4A)Software:STM32CubeIDE with HALOfficial CEVA SH2 library from github.com/ceva-dsp/sh2REPORT_INTERVAL_US = 2500 (targeting 400Hz)SH2_ROTATION_VECTOR (9-axis full quaternion)STM32 performance achieved so far:I2C 400kHz polling: 28Hz, read_ms = 32msI2C 1MHz Fast Mode Plus: 44Hz, read_ms = 19msINT pin wait inside sh2_hal_read(): still 44Hz, read_ms = 19msESP32 performance with same sensor and SparkFun SH2 library:read time: 1.2msData rate: close to 400HzThis is a huge difference. 19ms on STM32 vs 1.2ms on ESP32 with the same SH2 library unde

Cross-posting from CC1125 Sleep current rises to ~2mA on the TI forum.I have a custom board with STM32F030 controlling a TI CC1125 sub-GHz radio transceiver via SPI plus a few GPIOs.Everything is fine for normal operation (TX, RX, etc), but the system has a "Shutdown" mode where the CC1125 is put into its low-power SLEEP state, and the STM32 is in STANDBY.In SLEEP the CC1125 should take under 1uA but, after sending the SLEEP command, I see the current rise over ~4s and eventually settle at ~2mA.I have managed to reproduce this using a Nucleo-F030R8 (ST-Link removed) and a TI dev board:The blue line is the total system current (STM32 + cc1125); red line is just the CC1125.Zooming-in on the Shutdown part: There seems to be something charging-up and then (partially?) switching-on?With the CC1125 disconnected, the Nucleo alone takes a steady ~3.1uA with the STM32 in STANDBY.So it looks like the issue is with the CC1125 somewhere; just posting here in case anyone has any suggestions.&n

I try to do power wirign for the STM32N645 but unfortunately the AN and the User Guide are not perfectly clear and somewhat incomplete.When I understand it correct, the STM32N6 generates the VDDCORE voltage of 0,89V internally, so all I have to do with the VDDCORE-pins is to connect them with each other and to couple each of them with 100 nF to ground, right? For this I need a specific SMPS configuration which lets the MCU generate this voltage. Here I have a description in the AN and the User Guide which shows some wiring scheme named “Configuration when using SMPS (option 1)” that consists of two inductances and a capacitor and external 1.8V feed into VDDSMPS input.My problem here: the wiring scheme of the development board of that MCU is completely different to what the documentations say. And: neither in the AN nor in the User Guide there are any values for these components. So the question is: what wiring should i use with which component values to let the MCU generate the VDDCORE

I am developing a device based on an STM32F746VET6 with two Ethernet ports. To implement this, I chose the KSZ8863RLL, as it provides two external Ethernet PHY ports and an RMII interface to the STM32.At the moment, Port 1 and Port 2 are both working correctly at 100 Mbps full duplex. I can successfully transmit and receive data through both ports. However, I cannot get Port 3 (the RMII CPU port) to establish a link.I'm a bit confused about the correct RMII interface connections. I am using Clock Mode 5, and my understanding is that the external 25 MHz crystal is internally multiplied to 50 MHz, with REFCLKO_3 providing the 50 MHz reference clock to the STM32. Is that interpretation correct?This is how I originally routed the RMII signals: After reading through the datasheet and application notes, I also came across the following information:Based on that, I bodged my PCB to match the recommended connections, but I still cannot get a link on Port 3.Has anyone successfully used the KSZ8

Hello,I am using the VDx1943 EVK kit and would like to extract the live camera feed using the SDK. Could you please help me identify the correct DLL file to use?So far, I have tried using:st_brightsense_sdk_vdx193.dll en.STSW-IMG507_16GZUnfortunately, I have not been able to successfully pull the live view with either of these. Could you point me to the correct DLL file, or advise on the proper method to extract the live feed from this kit?Thank you for your help.Regards, 

Hi everyone!I'm writing my first bare-metal driver for STM32 in C (CMSIS, no HAL). The driver controls a TMC2209 stepper motor driver over half-duplex UART.The basic functionality is currently working: initialization, frame assembly, CRC calculation, and movement control via VACTUAL. To keep it hardware-agnostic, the UART send function is decoupled using a function pointer (handler->send). Registers are defined using union and bitfields (struct).Since this is my first driver, I'd love to get feedback from experienced embedded developers on the following questions: API Design & User Access: What level of API access should I expose to the user, and how should it be structured? Is it better to hide register manipulation behind high-level functions (e.g., set_speed, set_current), or keep direct register access accessible? Bitfields vs. Shifts/Masks: Is using union + struct (bitfields) acceptable for production-ready embedded code, or is it better to switch to explicit bit shifts a

I'm interested in improving my debugging workflow when working with STM32-based projects. Beyond using breakpoints and serial output, what techniques or tools have made the biggest difference for you?Do you rely on STM32CubeIDE features, hardware debugging tools, logic analysers, or custom testing methods? Are there any common mistakes beginners should avoid when troubleshooting timing issues, peripheral configurations, or communication protocols?I'd love to hear about the debugging practices that have saved you the most time in real-world projects.

Hi, its my first postLet me introduce myself, my name is Manuel, I am from Spain (English is not my native language) and I have joined the forum looking for help. My profile is that of a maker with very little programming experience (an AI maker). AI helped me a lot to make the programs I’m migrating a project from Arduino to an STM32 Blackpill; I managed to get it working on Arduino.Sim racing pedalsThe pedals are a potentiometer (for the accelerator) and a loaded cell (for the brake). Well, what I thought would be the hardest thing to do—getting the STM32 Blackpill to “read” those sensors—I’ve managed to do. I press buttons on the console and see the changes… but what was easy on Arduino—turning it into a game display for Windows—I’m not being able to do on the STM32… the libraries that Gemini recommends are either missing or don’t work… I’m looking for help getting Windows to recognize my STM32 as a gaming device. I thought this part would be easier; the Blackpil

Hello everyone,I'm a final-year Electrical and Electronics Engineering (EEE) student aspiring to build my career in the Electric Vehicle (EV) industry, particularly in areas such as Battery Management Systems (BMS), Power Electronics, Motor Control, Embedded Systems, and eventually R&D.I recently decided to learn the STM32 NUCLEO-F303RE as my primary development platform because I understand it is widely used for motor control, real-time embedded applications, and industrial systems.I am a complete beginner to STM32 and embedded systems (although I have basic C programming knowledge), and I'd like to learn it the right way rather than just following random tutorials.I'm looking for guidance on the following:What is the best learning roadmap from beginner to advanced for the STM32 NUCLEO-F303RE? In what order should I learn the peripherals (GPIO, Timers, PWM, ADC, UART, SPI, I2C, CAN, DMA, etc.)? Which official documents should I read first (User Manual, Datasheet, Reference Manual,

Dear Team,I would like to request access to the Amazon FreeRTOS code supporting OTA functionality on STM32 platforms.I am currently working with STM32 boards and am specifically interested in evaluating and developing OTA-based solutions using Amazon FreeRTOS. I understand that access to this codebase is currently restricted, and I would like to be considered for whitelisting.Requested Access For:Amazon FreeRTOS OTA code for STM32 platforms (e.g., B-L475E-IOT1A, NUCLEO-H743ZI, P-NUCLEO-WB55, STEVAL-STWINKT1B, X-NUCLEO-BNRG2A1, STEVAL-STMODLTE)Purpose:I am working on embedded development involving BLE and cloud-connected applications and would like to integrate OTA update capabilities into my STM32-based projects.Please let me know if any additional information is required to process this request.Thank you for your time and support.Best regards,Ravi

Hello Sir,We are currently facing a Country of Origin (COO) issue regarding the STM32F722RET6 MCU and would appreciate your assistance in clarifying the following questions.Could you please confirm whether the Country of Origin (COO) of the STM32F722RET6 is France, as indicated on the STMicroelectronics official website? Could you please provide the manufacturing locations for the STM32F722RET6, including: Wafer Fabrication (Wafer Fab) location Assembly location Testing location Your prompt assistance would be greatly appreciated.

Dear Team,Could you please provide the internal RTC accuracy for the STM32H7 microcontroller?Additionally, I clarify the following point: 'Digital calibration circuit with 0.95 ppm resolution, to compensate for quartz crystal inaccuracy. Regards,TEMC - Efftronics systems Pvt Ltd

Hello,I am looking for a camera module for the NUCLEO-H7S3L8 board, using the STM32H7S3L8 MCU.My project requirements are: Field of view: at least 120° horizontal FOV Preferably RGB or YCbCr output I would prefer a module that is reasonably easy to connect, with a breakout board or pin header I would like to avoid MIPI CSI-2 cameras because the NUCLEO-H7S3L8 does not have a CSI-2 camera receiver or a 22-pin camera connector The STM32H7S3L8 datasheet, Section 3.26, states that its DCMIPP supports an 8- to 16-bit parallel camera interface, including RGB565, YCbCr 4:2:2 and compressed data such as JPEG. However, the NUCLEO-H7S3L8 board does not appear to have a dedicated camera FPC connector.I found an ST Community table listing OV2640, OV5640 and OV5642 as examples of sensors supported by STM32 DCMI. I am therefore considering an OV5640 module with a 120° lens, such as this module:https://www.eleparts.co.kr/goods/view?no=6210776&utm_ I also considered an Arducam Mega SPI camera

Hi all,I'm driving an NHD-1.5-128128G (SSD1351 controller, 4-wire SPI mode) from an STM32F303RE (Nucleo board) using the hardware SPI2 peripheral. The display has never lit up, and I've now run out of obvious things to check, so I'd appreciate a second pair of eyes.SetupDisplay: NHD-1.5-128128G Interface: 4-wire SPI (BS1=0, BS0=0, both tied to GND) MCU: STM32F303RE, HAL library, hardware SPI2 (not bit-banged) Pin mapping: CS, D/C, /RES driven as GPIO outputs; SCLK/SDIN via SPI2 hardware linesPower rails (all measured at the panel/FFC connector end, not just the breakout header)VCC: 13.0 V (measured on oscilloscope, confirmed at the connector) VCI: 3.3 V VDDIO: 3.3 V (measured directly at pin 4) VDD: not externally driven, only a 1 µF cap to GND per datasheet VCOMH / VSL: only connected to their respective decoupling caps per the reference schematic, no external driveWhat I've verified works correctly/RES toggles LOW→HIGH with correct timing (confirmed on scope) D/C toggles between comm

Hello, I’m writing in regards to a project that I am doing that involves a STM32G474RGT being used to control a synchronous buck converter. In this set up I plan to use Peak Current Mode Control, which I found was supported by Biricha’s WDS software. As a result I configured my HRTimers and ADC and Comparators like the guides that I found online, mainly the step by step setup on the Biricha Youtube Channel. However, upon opening up the software, I noticed that the circuit tab for the buck setup would only show up as an asynchronous buck, using a diode instead of 2 N-Channel mosfets. Is there anyway to configure the software to use a synchronous buck topology? Brian

 I’m working with my stm32f769-DISCOvery board.I’m trying to work through a few things that are unfinished/missing with the various buildroot configs on github and the stock one in buildroot.On boot, it crashes like this:[    1.705669] Unhandled exception: IPSR = 00000006 LR = fffffffd I’m apparently hitting an error with binutils newer than 2.28.1.It’s looking like this report, except I have also managed to get fffffff1 instead of fffffffdhttps://github.com/fdu/STM32F769I-disco_Buildroot/issues/1#issue-340504566This emcraft patch seems to be intended to mitigate the crash:https://github.com/EmcraftSystems/linux-upstream/commit/2882de1d86bd536c855feee582d44722434c2ac9In theory, the fix should be upstream as as well, and the 5.15 kernel i’m playing with should be new enough. (I’ll need to validate that I guess)https://github.com/torvalds/linux/commit/afc9f65e01cd114cb2cedf544d22239116ce0cc6 Looking at this:https://github.com/fdu/STM32F769I-disco_Buildroot/issues/1It seems it is caused b

Hi all,I'm designing the control electronics for an automatic egg-candling machine (150 positions). An STM32F411 drives everything over a single shared SPI bus:A 74HC595 daisy-chain (shift registers → ULN2803A → solenoid valves) MCP3208 ADCs (reading LDR light sensors) on the same SPI bus, CS-selectedThe process is strictly sequential (read all sensors first, then actuate valves — never at the same time), so valve-switching noise never coincides with an ADC read, and SPI speed is not time-critical. That's why I want to keep the clock slow.Physical signal path (my concern):~100 cm total PCB trace 2 board-to-board connectors (PCB-to-PCB) then a 20 cm cable that enters the target IC (74HC595 / MCP3208) Planned SPI clock: 100 kHz, SPI mode 0, 3.3 V logicMitigations planned: series termination on SCLK/MOSI/LATCH at the source, ground interleaving in the cable, star grounding (valve PGND separated from SPI/logic GND), local 3.3 V regulation at the far end.My own bench test: I ran an SPI loop

Hello Friends, I have selected STM32F401XE series for my new project. The device is expected to face road vibrations and shocks, so to make system more reliable I am thinking to use MEMS oscillator rather than standard Quartz Crystal. I tried to search any reference schematic of STM32 MCU having MEMS osciilator but couldn’t find. Please share if any information available on how to use MEMS Oscillator.  I understand  OSC-IN should be connected to OUT of MEMS Oscillator and OSC-OUT should be set to high -Z.   What about VDD of MEMS Oscillator?  Should it be set to same VDD as set in STM32F401XE MCU, which is 3.3V Thanks

Hi Team, I was going through the schematics of STEVAL-CTM010V1 solution for dual Motor controller application for Airconditioner.  Can anyone help me regarding the design equations of this application? If possible, we are ready for a meeting.Kindly reply. Thanks and Regards,Ajay P