STM32 MCUs Motor control

Hello,    my computer is running Windows 11.    The versions of the software I'm using are CubeMX V6.0.1, MotorWorkBench V5.4.8, and Java jre1.8.0_461. However, I keep getting such error prompts when generating code. Could you please tell me how to solve this problem? WARNING: An illegal reflective access operation has occurredWARNING: Illegal reflective access by com.thoughtworks.xstream.core.util.Fields (file:D:/STMicroelectronics/STM32Cube/STM32CubeMX/plugins/analytics.jar) to field java.util.TreeMap.comparatorWARNING: Please consider reporting this to the maintainers of com.thoughtworks.xstream.core.util.FieldsWARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operationsWARNING: All illegal access operations will be denied in a future release[Fatal Error] :1:1: Premature end of file.[Fatal Error] :1:1: Premature end of file.[Fatal Error] :1:1: Premature end of file.[Fatal Error] :1:1: Premature end of file.[Fatal Erro

Hello,I am working with Motor Control Workbench 6.4.1 for a project using Nucleo-G431Rb X-NUCLEO IHM08M1 and a PMSM motor. The position feedback is given by a motor resolver.I read sin e cos values and calc the rotor position correctly.If I generate a sensorless firmware all work but the issue is that I cannot find the option for a resolver in the Motor Control Workbench, only Hall sensors or Quadrature Encoder. Is there any way to go past this restriction for this use case, either through hardware or software ?Any assistance is much appreciated.Thank you

Hello ST Team,I'm encountering an overvoltage fault when decelerating a motor from high speeds. My system uses an STM32 F401RE microcontroller with an IHM16M1 driver board, controlled via Field-Oriented Control (FOC).The motor operates normally at high RPMs, but when I command a speed reduction, the system immediately triggers an overvoltage fault, indicated as an "ACK Fault" in the Motor Pilot interface. We've already tried troubleshooting the overvoltage fault on our motor controller by:Increasing the voltage range in the bus voltage sensing section.Following the recommended steps for overvoltage fault resolution outlined in the user manual.Despite these efforts, the issue is still happening.What are the solutions for preventing the overvoltage fault during deceleration?We're looking for other potential solutions or insights. Any suggestions on effective strategies would be greatly appreciated.Thank you in advance for your support. Best regards, Rahul 

Hi sir,We are using an STM32 MCU for a motor control application (vacuum cleaner application). Universal motors are typically used in vacuum cleaner applications.Could you please help me with the selection of a suitable MCU, motor driver, and a universal motor?We have verified one device with the part number STEVAL-IHM029V2, but it is not recommended for new designs. Could you please suggest an alternative part for this?I am attaching the motor brochure for your reference.   Best regards,Samudralnakaiah. 

Hi all.I'm brand new to the STM32 so please excuse my lack of knowledge.I'm looking into this microcontroller as I have 'found' a Motor Control Nucleo Pack (or at least its contents) left unused by a former colleague, I'd like to try and get it working as a lead in to using the STM32, I've previously used Arduino and want to see if this has advantages.I have the STM32 and IHM07M1 motor control board from the pack along with the motor but I don't have any instruction manual or software files, I don't even know what it should have come with.I have loaded and installed the IDE, MX and Prog today (11-Oct-2025) and instlled the latest L4 files V1.18.1.  Plugged in the STM32 board and see the power light initiallyi illuminate red then change to green.  I also get an E:\ drive on my computer with 3 small files (DETAILS.TXT, FAIL.TXT & MBED.HTM).With the IDE open I don't see any comm's with the board but then I don't know whether I should or how I would do so, hence not necessari

 Hi!I disassembled a BLDC motor from a popular hammer drill.It has two pairs of windings and three PCBs:- a main rectifier with a simple 16V voltage converter;- a set of six IGBTs and one 5mΩ shunt resistor;- a regulator with several drivers, operational amplifiers, and a microcontroller. It also has built-in HAL circuits.I scrapped the last PCB and made my own driver and measurement circuit, copying the originals, but I used an STM32G431 for control and acquisition. The goal is to achieve stable and reliable torque in this machine.The use of a single shunt resistor forced me to use a single-resistor circuit; I also copied and used the HAL circuits. I generated the code using MCSDK v6.4.0 in FOC mode. The PWM operates at 5 kHz—the same as in the original. I spent some time tuning the parameters, but now it works well. The rotation is stable in both directions, and MotorPilot allowed me to adjust the rotation accordingly. However, one important parameter is very unstable—the torque

Hi,I’m using the STSPIN32G0601Q (with the STM32G031C8 MCU) for a motor control project.I want to know if it’s possible to control multiple motors using this device or the STM32 Motor Control SDK.Thanks,Mathan

Good morningI am  developing a three-phase motors drive board using the X-CUBE-MCSDK STM32 Motor Control Software Development Kit tool.In addition to the available control modes that we can utilize, we need to control a synchronous motor with a resolver and an induction motor with an incremental quadrature encoder.The currently available version (V.6.4.1) does not support the use of a sine-cosine resolver, a sensor widely used in PMSM synchronous motors, and induction motor control (available in version 5 of MCSDK) is not yet available in version 6.Can I know if these modes will be implemented in future developments of the tool? Many thanks

Hello ST Community,I am trying to download the latest version of the X-CUBE-MCSDK, but the "Get Software" button on the official product page is not working. When I click the button, the download does not start.**Problem Page:**https://www.st.com/en/embedded-software/x-cube-mcsdk.html**Troubleshooting Steps I Have Already Taken:*** Tried while logged into my ST account and also while logged out.* Used multiple web browsers (including Chrome and Firefox).* Cleared all browser cache and cookies.* Disabled browser extensions (like ad blockers) that could interfere.* Tried accessing the page via the STM32 Motor Control Ecosystem page, which leads to the same broken link.Since none of these standard troubleshooting steps have worked, it seems there may be an issue with the website itself.Could someone please provide a direct, working download link for the latest version of X-CUBE-MCSDK?Thank you for your help.

I want to add a custom motor under "New_Project" in MC Workbench. As soon as i am clonign previous motors, i am not able to edit it and the edit window is getting closed automatically.Please suggest me what i should do.

I'm using EVSPIN32G06Q2S1 board.PB0 is a DAC emulator controlled by PWM duty.But it’s always disabled. How can I enable it? 

Hallo motor control experts,I’m trying to get a B-G431B-ESC1 board running on an e-bike motor using the ST MCSDK 6.4.0. The motor spins with the Motor Profiler FW (B-G431B-ESC1#B-G431B-ESC1 3Sh#(6.1.2).hex) in the profiling phase, but the MCSDK project generated from those parameters won’t get the motor to turn. Hardware setup, power supply and so on ist exectly the same, so it must be a firmware problem. I’ve tried it both sensorless and with the encoder—same result.Is there any information which parameters the Motor Profiler FW uses?How it is posible, that the Motor Profiler FW get's the motor to run without knowing the motorparameter and the MCSDK project with the exact motor parameters does not run?Thank you!    

Hello,I am using the B-G431B-ESC1 board with a fresh installation of X-CUBE-MCSDK-6 (v6.4.1).I want to use the Motor Profiler, but I am facing a problem:1. The precompiled profiler firmware (.bin/.hex file) for B-G431B-ESC1 is not included in the 'Utilities' folder. I understand this may be by design in newer SDKs.2. However, when I create a "New Project" in MC Workbench and select the B-G431B-ESC1 board, the option to create a "Motor Profiler" firmware does not appear. Only the "FOC" option is available.Because of this, I am completely stuck and cannot run the Motor Profiler.Could you please advise on the correct procedure to get the profiler firmware for the B-G431B-ESC1 on MCSDK 6.4.1?Thank you.

I am working on a project to drive a door using a PMSM motor in position control mode.I've encountered a problem I can't solve. When the motor is positioned at some specific rotor positions, it fails to start properly and tends to spin out of control during the startup sequence.There are very similar 2 posts titled “Loss of control whenever the motor starts at some specific points” (https://community.st.com/t5/stm32-mcus-motor-control/loss-of-control-whenever-the-motor-starts-at-some-specific/td-p/143892) and “Motor sometimes starts in wrong direction, because of wrong sign of Iq measured” (https://community.st.com/t5/stm32-mcus-motor-control/motor-sometimes-starts-in-wrong-direction-because-of-wrong-sign/td-p/64553).Has anyone found a solution? If so, could you please share it with us?Thanks in advance for your help. Details:ST MCW Ver            : 6.4.0STM32CubeIDE Ver : 1.19.0Driving algorithm     &

As an exercise, I have written a 2-phase induction motor control program using high-level program elements (HAL).  I used a Nucleo-G071, though I'm sure nearly any STM32 family device will work.  Since 2-phase algorithms are not common cookbook items, I started from scratch.  The desired end state is the use of center-aligned PWM using burst-mode DMA and a 3-wire interface.  I encountered problems with asymmetry in the pulse positions of the 3 outputs.  After much coding and experimentation with logic analyzers and oscilloscopes, I came up with a method that yields a clean uniform output.  I used VS Code and GitHub Copilot during the development.  After finishing, I asked GitHub Copilot to summarize the problems and solutions.  Perhaps this may be useful to those who are undertaking similar work.  I am attaching that summary here: # Solving Center-Aligned PWM Asymmetry in STM32 DMA Burst Mode Applications**A Novel Split-and-Phase-S

Hello everyone We successfully designed a custom board using the STMCSDK V6.4.1 and here is its specifications:MCU: STM32F030K6T6POWER BOARD: Based on STEVAL-IPM10Bwe successfully got a motor running and its nominal values are as follows:Pole Pairs: 5Vbus = 400V, Current = 2Amps, Speed = 1500rpm.We used the same board with another motor:Pole Pairs: 40Vbus = 400V, Current = 2Amps, Speed = 500 rpmThe First one runs smoothly and everything is fine, but the second one is making some annoying audible noise inside the motor. We tested it with a commercial board and its totally fine, so the motor isn't the problem.I have taken these steps so far and none of them have worked:1: decreasing and increasing the pwm frequency 2: decreasing the pi coefficients for the PLL3: decreasing the G2 coefficient for the observer 4: decreasing both kp and ki for torque and flux control loops5: decreasing and increasing deadtime for switching 6: decreasing and increasing the sampling cycles

Hi ALL,I'm working on a MCSDK project which configures as follow:1. STM32F407VET6 (yes I migrated a device). 2. EG3118 driver w/ 12V power supply. 3. SVGP104R1NL5 MOSFET. 4. 3 Shunt, 15mohm resistor, and 15x amplified external OPAMP which comes from EVAL boards. The OPAMP I tried includes RS821XF and COS721TR. 5. Motor VBUS is powered with another 8V rail. 6. ADC 1/2 configuration, and sampling time is 667ns（15 adc clk).I am building a MOST SIMPLE scene: Open Loop Voltage, motor DISconnected to board, low noise linear desktop power supply. RPM and Voltage both set to 0. Which means there should no any current flow through shunt resistors.When I power up and first time start the motor, the current offset calibration value is not consistent. the "pHandle->PhaseAOffset" varies from 32900 to 33400, which means about 0.1A inaccuracy.The only way I can get stable readout, is commenting out 2 instance of below line in R3_2_CurrentReadingCalibration():R3_2_SwitchOnPWM( &pHandle->_Sup

What Linux development environment can I use to program my Discovery kit with STM32G431CB MCU?Since I don't want to use Linux, am I really forced to choose non-ST products?

I have a custom board (G491) with a 1-shunt driver and Hall sensors I have been using with MCSDK 6.3.2 with no issue.When I saw the Release Notes of 6.4.0 I decided to give it a try, I wanted to try out the current monitoring.The workspace project was created from scratch with the same configuration as it worked on 6.3.2 (6-step, hall sensor as speed sensor), but, when I tried to start the motor, it didn't start. When I manually moved the shaft, speed control got crazy and started spinning at max speed.In idle, I realized that the UI reports 30 rpm when not in movement. I can move the motor forward and it reports some speed but, if I turn it backwards, speed is reported as 30 rpm. HALL_EL_ANGLE register is stuck at 0, when it should change.I went back to a nucleo-G431 with a IHM08M1 and a different motor, and the behavior is exactly the same.It looks like the logic for the Hall sensor is broken.Has anybody experienced anything like that? 

I was testing a BLDC motor with Hall-effect sensors at very low speed. This worked ok with v6.3.2, but with v6.4.1, if the speed reference is low, the motor don't even start.If I manually move the motor, sometimes it starts and sometimes it throws an overcurrent error.It looks like the PID is integrating, but not actual PWM's are being sent to the motor.I checked that, when movement starts, HALL_ReadState (called via multiple functions from TSK_MediumFrequencyTaskM1 when State is CHARGE_BOOT_CAP) sets pHandle->SensorIsReliable = false because the hall state was the same as previous call to ReadState so I modified ReadState so that, when the state is the same as before, it was not labeled as unreliable, but motor still doesn't start.I'm going to dig deeper on it. 

I have a custom board with a STM32G491 with a single-shunt driver for 6-step with hall effect sensors.One of the motors I have has a hall sensor placement close to 120°. I followed the process described in documentation (section 3. "Setting up the system when using Hall-effect sensors" in "Hall sensor feedback processing" page) and the Hall delay, described as "the delay in electrical degrees between the maximum of the B-emf induced on phase A and the first rising edge of signal H1" was approximately 108°.I used that value with v6.3.2 and I confirmed that current through motor phases was cleaner with 108° than with 120° (with both values rotating correctly)When v6.4.0 came out I tried the same configuration. The motor only vibrated violently with either 120° or 108° for hall delay. I reported it in this forum and a code modification was suggested that eventually was included in v6.4.1. But that solution only fixed when Hall delay is aligned with 60° steps.With v6.4.1:If I set 120° (it

Dear All,I am currently working on a 10 kW motor drive for controlling a PMSM in an automotive traction application, utilizing a Field-Oriented Control (FOC) algorithm. I am facing a challenge with position extraction from the motor’s Hall sensors.The motor is equipped with three Hall sensors spaced 120 electrical degrees apart. However, due to sensor misalignment or misplacement, I am experiencing position jumps at n*60 electrical degrees. This issue appears to stem from the position extraction algorithm. Specifically, the Hall sensors' XOR logic determines position in 60-degree segments of the electrical cycle. To obtain a continuous angle, I interpolate between these segments using speed summation.I have tested various smoothing methods, including PLL and others, which work well up to around 3000 RPM. Beyond this speed, I observe current spikes leading to torque ripple and an audible buzzing noise from the motor.I will attach plots of the extracted position and Hall sensor signals f

Hi there;I'm trying to muddle my way through my first design with a motor driver that includes current sensing. This is for a battery-powered device, operating with an stm32f4 at 3.3v. My motor is a small gimbal-style motor, which I intend to run at 3.3v, and which I estimate will draw current ranging from 0.1-0.4A. I think I would like to run at a PWM that is at least 20kHz, though it would be nice to go faster to avoid switching frequencies that might be irritating to pets. Maybe that's 25-40kHz (center-aligned PWM)? The STSPIN233 seems very appealing to me, but - because I'm new to this - I'm struggling a little navigating the ADC front end amplification necessary for this. I'm aware I need amplification of some sort - I have several dozen tabs open in my web browser here to try to understand the differences between using an op-amp vs. a current sense amplifier for this. I am having trouble finding many specific resources for this in ST's library. TI has a ton of stuff, bu

[VERSION]: MCSDK 6.4.1[TOOL]:6-Step FirmwareControl by MC Pilot[DETAILS]:In open loop mode, the same duty causes a big speed difference between CW and CCW.It doesn’t make sense.[EXPECTED BEHAVIOR]:In open loop control, CW and CCW should not have a big speed difference.I guess the ".PhaseShift" parameter does not consider CW and CCW.The ".PhaseShift" of CW and CCW should be complementary,and the sum should be 60° electrical angle.[HOW TO REPRODUCE]:Control the motor with 6-step algorithm, current mode.Use Hall signal for commutation and speed calculation.Control by MC Pilot.Set CW or CCW direction.Enable open loop mode and set open loop duty.Start the motor.Get the CW or CCW speed.[2025-10-07 update]I tried using v6.3.2.still In open loop modeI can get the same speed with the same duty when I set the "Placement electrical angle" to 124.so I think my issue is the same issue reported by @jovijuan. 

[PN]: STM32G431CBU6[VERSION]: 6.4.1[TOOL]: Motor Control Workbench[DETAILS]:The automatic calculation for the speed observer gains in the Speed Sensing Config and the speed regulator gains (Kp & Ki) in the Drive Settings fails. This occurs after importing a custom inverter board JSON file. The tool reports errors and does not populate the gain values.[EXPECTED BEHAVIOR]:After importing the custom inverter JSON file, the Motor Control Workbench should be able to automatically calculate and set the appropriate gains for the speed observer and speed regulators without any errors.[HOW TO REPRODUCE]:Import Custom Inverter Board: Open Motor Control Workbench (v6.4.1) and import a custom inverter board using the following JSON file attached to the post:Navigate to Drive Settings: After the import, navigate to the "Drive Settings" tab.Attempt Automatic Calculation: Check the "Auto Calculate Kp & Ki" box under the "Speed regulator" section.Observe the Error: The tool fails to perform th