STM32 MCUs Motor control

Documentation link

Hi,I'm trying to control a BLDC motor connected to B-G431-ESC1 driver in Open Loop Voltage mode. With Motor Pilot control there's no problems. I'm not able to find the correct HAL commands to use for:A) Set Open Loop Voltage mode ( B) Set the reference voltageC) Set the speed in RPMStart, Stop, Ack Fault commands are ok. AI gave me a lot of indications but nothing seems work ok. Many thanks who will help me.Bye  Rossano 

I'm running into an issue where my STM32G4 gets stuck in an infinite while loop inside R3_2_SwitchOffPWM() during the motor control initialisation sequence, and I wanted to share it here in case others have encountered the same thing.---Hardware & Software- Board: EVSPIN32G4- Code generation tool: ST Motor Control Workbench v6.4.2- No manual edits made to any generated files---What happensDuring startup, MX_MotorControl_Init() is called from main(), which triggers MCboot() → FOC_Clear() → PWMC_SwitchOffPWM() → R3_2_SwitchOffPWM(). Inside that function, execution enters this loop and never exits:/* wait for a new PWM period to flush last HF task */LL_TIM_ClearFlag_UPDATE(TIMx);while (LL_TIM_IsActiveFlag_UPDATE(TIMx) == 0u){}LL_TIM_ClearFlag_UPDATE(TIMx);(Project Files attached)

Hi,We were attempting to control a high-voltage BLDC motor using the EVSPIN32G06Q2S1 evaluation board. While following the Getting Started procedure described in UM3394, the board got  damaged during the power-up stage.Below are the steps we followed and the observations we made.Steps performedGenerated firmware using Motor Control Workbench.Flashed the firmware to the evaluation kit using the Nucleo board’s ST-Link.The digital section was powered using the 3.3 V supply from the ST-Link.Power-up observationsWhen only AC power was applied, the power stage turned ON, but the logic section was not powered.When VDD was supplied via ST-Link (3.3 V) and AC power was applied, the board was damaged:The 5 A fuse (F1) blew.The 0 Ω resistor (R29) burned.VDD and GND are now shorted.QuestionsCould someone clarify the correct power-up sequence for this board when using ST-Link for programming?What is the purpose of R29 shorting the logic ground and power ground ReferencesUser Manual: UM3394Eval

Hello.I'm trying to work with the B-G431B-ESC1 board.I've assembled a prototype consisting of the specified board, a T-Motor MN3510-13 KV700 motor, a 13*4.4L propeller, and a 4S battery. I'm using MC SDK v6.4.1.At first glance, everything seems to be working fine. The motor starts with the specified propeller and runs fine up to about 7500 RPM.Then problems begin as the RPM increases. Depending on the battery's discharge level, i.e., the bus voltage, at certain RPMs the program seems to lose control of the motor. The motor revs up, and RPM, current, and power fluctuate. I understand that at such RPMs and under such a load, the modulation index is high and approaches 100%. I'm essentially starting to hit the limit. But this response doesn't satisfy me. Previously, I tested this motor with the same propeller and battery using the STEVAL-ESC001V1 board. I approached the same limit, but there were no oscillations. The motor simply stopped accelerating when it reached a certain RPM. For exa

Hello,I use the STM32 Motor Control Software Development Kit (MCSDK version 6.4.1). I created a new project with the STM32G474E-EVAL microcontroller board, the two IHM07M1 motor-drivers (power boards), the two modified X-NUCLEO-IHM09M1 adapter (connector) boards, and two gimbal 12V 3-Phase BLDC motors with encoder AS5048A. The project code was generated. By the way, I have not bought all the hardware yet. Our project is specific. For all microcontroller boards and their software, which I know, it is true that setting zero speed holds a motor's rotor in a fixed position. We need to accelerate two motors' rotors for 180 degrees and let them rotate by inertia for next 180 degrees. In this way, a rotor makes one full 360-degree circle path. It seems that the MCSDK Motor Pilot makes a rotor in a fixed position if the motor speed is set zero. Hence, we need to depower the motors while the rotors make the 180-degree path by their inertia. I doubt that the MCSDK Motor Pilot can completely

I am currently considering the EVALSTGAP4S evaluation board for a laboratory prototype, and I would like to ask a few technical questions about its possible use in a motor-drive application.My goal is to build a 7-level cascaded H-bridge (CHB) multilevel inverter for motor driving. Since the EVALSTGAP4S includes isolated gate drivers, I am wondering whether it can be used as a building block for a CHB inverter cell.I would like to ask the following:What is the practical current capability of the EVALSTGAP4S board?I would especially like to know the recommended continuous current range, and whether it depends on thermal conditions, switching frequency, or cooling method.Would this board be suitable for use in a 7-level cascaded H-bridge multilevel inverter for motor-drive applications?If not, what would be the main limitations or concerns?Since the board has isolated gate drivers, can multiple boards be used in a cascaded configuration with floating DC sources?If there are any important

We want to use the STSPIN32G0A1 evb, we cant find its schematics of it.

Hi,I've been experimenting with the High Sensitive Observer using the B-G473E-ZEST1S and STEVAL-LVLP01 boards to control a BLDC motor. So far we have good results, however sometimes the HSO loses control, especially at very low speeds (<10 electrical rpm). To overcome this a restart is required so the pol pulse is triggered and the rotator angle can be found. I was wondering if there are strategies to fuse the HSO feedback with the Hall sensor to overcome these problems? I known the ZeST solutions solves this as well but this is not publicly available yet and for safety reasons we are required to have an physical sensor to read the motor position.Thanks,Tom de Winter

Hello,I purchased the Zest development board kit. I have personally tried HSO and found it quite good. I heard that the Zest algorithm can achieve full torque output at zero speed. I am very interested in this. Could I apply for it personally?

Hello I want support for STSPIN32G4 EMI Issue I took tests for Farfield EMI Report at STSPIN32G4 Standby conditionReport shows QP are over than Limit at 190.547MHz, 253.803MHz and I also get similar result by using Near-field prove(Proved Noise Peaks : 185.91, 123.94, 247.88, 309.84MHz) this result are same at evspin32g4-dual(also Flash Erase conditions results) I guess 62 MHz harmonic noise occurs between STM32G431 and STSPIN32G4 Internal Control logic Because I observe noise when Voltage input to VM and REGIN for the (in 3.3V externally supplied circuit) I want to know how could i solve this problem(Resolving EMI noise)

Hi,After reading HSO current and voltage sampling in three-shunt topology, I beleve it is possible to run two BLDC moters using the ST-G473 microprocessor using 2 ADC's per motor. However, there does not seem to be support for that in the MC Workbanch. Will this be available in the future?Regards, Kevin

 Hi Team,I am currently working on a 48V HALL sensored based BLDC motor control system (three-phase) using the STM32F405RGT6, DRV8300, and STP100N10F7 MOSFETs. The motor is running using six-step commutation PWM.Although the motor is rotating, I am experiencing significant noise during operation. I have tested PWM frequencies ranging from 12 kHz to 20 kHz and am currently using a dead time of 1.25 µs.Under no-load conditions, the phase outputs (U, V, and W) appear correct. However, when the motor is connected, the waveforms on all three phases become distorted and are not as expected.I have attached the output video and image for reference. Could you please suggest possible solutions to reduce the noise and improve the waveform quality? Any guidance, tuning recommendations, or reference code would be greatly appreciated.Regards,Veerapandiyan V.1.With_Out_Load_ON_PHASEA_HIGH_SIDE(yELLOW_lOW_SIDE_Blue)Without_LOad_On2.With_Out_Load_Off_PHASEA_HIGH_SIDE(yELLOW_lOW_SIDE_Blue)Without_L

Hi Team,I am working on a custom board with STSPIN32F0601S3, after generating code using MCSDK Version 6.3.0 with cube Mx 6.10.0, I tried to connect Motor pilot just start/stop and change RPM but it did not connect, Pls confirm which steps I am missingBelow are the steps I followed but still it did not connect 1.Uploaded and RUN code (using cube ide)2. RESET board3. Opened workbench and selected Motor Pilot but it leads to default App Mode (pls refer screenshot) not detecting firmware although code is in run mode and not able to use Motor pilot which was along with MCSDK Pack 6.3.0  

In MCSDK 6.2.0, it says "Selected hardware boards do not support this feature". In MCSDK 6.3.2, nothing.Why?Without this, it generates MC code using systick, and if adding FreeRTOS with CubeMX, I have to merge the systick handlers for FreeRTOS and MC and some other works. The change is "volatile" when generate code with CubeMX again.I'm heavily rely on CubeMX, so what's the solution?

I designed my own PCB based on the EVSTSPIN32G4 evaluation board and created a project in STM32Cube IDE. When testing the STSPIN32G4’s internal driver, I encountered an issue: no matter what I do, the GHS voltage remains at 5.8V, the GLS voltage is 0V, and the OUT voltage is also 5.8V. I have tried setting PE8 to high or ground, as well as using PWM, but the voltage on GHS1 never rises. Reading the I²C register values does not trigger any protection; the STBY value is 0 and does not enter low-power mode; the nFAULT pin remains low regardless. As far as I can tell, there are no errors. Could an expert please provide some guidance? Thank you.The ST Community moderator has translated the post to comply with the language of the Community which is English.  For more information, see: ST Community Terms and Conditions - STMicroelectronics CommunityTranslated with DeepL.com (free version)

Working on STEVAL-SPIN3201 board and need help in expected low-speed torque performance using Field-Oriented Control (FOC).System Configuration:Motor Driver Board: STEVAL-SPIN3201Motor: 3-phase BLDC (Rated torque=0.25Nm)Position Feedback: Hall sensorsObserved BehaviorDuring testing, I observed that the motor struggles to start at lower commanded speeds when a load is applied.Load: 0.05Nm1000–1500 rpm: Motor struggles to start.2000 rpm: Motor starts reliably.Load: 0.1 Nm1000 rpm: Motor does not start.1500–2000 rpm: Motor struggles to start.3000 rpm: Motor starts reliably. Whether this behavior is expected and advise on any key parameters (e.g., startup current, Hall alignment, or rev-up settings) that should be optimized?Is there any startup current limitation in STEVAL-SPIN3201 firmware?FOC should provide high torque at low speeds, including during startup. However, the current behavior suggests that the available starting tor

Hi Team,I am working with the STEVAL-SPIN3202 evaluation board and facing an issue while trying to flash firmware to the target MCU.Setup Details:Board: STEVAL-SPIN3202Programmer: Onboard ST-LINKTool: STM32CubeIDEIssue Description:ST-LINK is detected in STM32CubeProgrammer but not able to connect to the target MCU STM32F103CBT6Programming fails consistentlyPFA, Kindly suggest to resolve this issue.Thanks,HimansuSmall Signals India Pvt. Ltd

i am getting attached error,kindly suggest further

[PN]: STSPIN32G4 (custom board), AMT103 encoder[VERSION]: MCSDK v6.4.1[TOOL]: MC WB[DETAILS]:I need to implement torque control for my custom board and BLDC motor using a quadrature encoder as the primary feedback sensor.First, I successfully profiled my motor in sensorless mode using the SDK and incorporated those values into my Workbench project. When using this sensorless configuration outside of the Profiler, I can reliably drive my motor in both torque and speed control modes (using MC_FOC_SDK.qml). At this point I have also configured the encoder as an auxillary sensor, and can see its measured RPM in Motor Pilot match the sensorless RPM feedback. This encoder has an index pin, but I am not using it in my configuration since I do not want to run in Position Control mode.Now, I have reconfigured my project to use the encoder as the primary sensor and "sensorless" as the auxillary. The result in torque control mode is that the rotor locks into place and resists manual spinning. Thi

What is the proper way with position control to reset the current angle by for example 50 rotations towards a smaller value?If the theta keeps increasing forever, with the float number representation, there will be an error during continuous operations in the same direction. (Smallest increment of a float that is not able to represent 1 as smallest number:mantissa_bits = 23 precision_bits = mantissa_bits + 1 // include implicit leading 1 N_max_exact = 2 ^ precision_bits = 2 ^ 24So if theta reaches 16.777.216 or 2.6 million rotations, there will be a significant error relative to the motor angle. Is that handled in the MCWB position control somehow? What is the intended usage for this problem?Below is the intended code-example with increasing position by 180°*of the output shaft after a gear ratio of 50 each cycle:/* * MotorControl_Interface.c * * Created on: 26.03.2026 */ #include "MotorControl_Interface/Inc/MotorControl_Interface.h" #include "main.h" #include <cmsis_o