STM32 MCUs Motor control

Demande de support pour maximiser le couple de démarrage du moteur PMSM avec la carte STSPIN32F0Bonjour,Je suis ingénieur software embarqué chez Actia Micromobilité. Je possède un moteur PMSM avec effet Hall pour vélo, que je commande avec la carte STSPIN32F0. J'ai rencontré un problème de démarrage : le moteur ne fournit pas assez de couple au démarrage.Je souhaiterais obtenir des conseils sur l'utilisation de MC Workbench ou tout autre logiciel pour maximiser le couple de démarrage de mon moteur à vitesse nulle. Mon objectif est d'obtenir le couple maximal dès le démarrage, à vitesse zéro.Merci d'avance pour votre aide.Cordialement,Please note that the forum language is English - see Community Terms & Conditions.Google Translation:Good morning,I'm an embedded software engineer at Actia Micromobilité. I own a PMSM Hall effect motor for a bicycle, which I control with the STSPIN32F0 board. I've encountered a startup problem: the motor isn't providing enough torque at startup.

Hello everyone!I use these tools:MCSDK V6.3.2 CUBEMX V6.14.1KEIL CompilerI am curious about controlling the power consumption of a motor (instead of having set point for the motor's speed, we want to define this set point for power).Is there any CHANCE to somehow implement a power consumption control loop in the firmware? Is there any API?Could we customize and change the firmware's default control loop for speed and modify it in header files and source files of a project to work based on the power consumption?What are your suggestions?I hope you get the idea. Thanks ALL 

Hello.I am currently conducting FOC (Field-Oriented Control) tests using the Motor Control Workbench with the Nucleo-G431RB board and the IHM08M1 power stage.My target speeds are 300 rpm and 150 rpm.However, when using Hall sensors with motors that have 4 and 8 pole pairs, the measured speed resolution appears to be limited to 6 rpm.Initially, I suspected this limitation was due to the resolution of the Hall sensors.However, even after switching to incremental encoders (1024 PPR and 8192 PPR), the measured speed still increments in 6 rpm steps.Is there any method to enhance the speed measurement resolution in this setup?

Hi :[VERSION]: MCSDK 6.3.1I have some questions regarding the HSO ADC sampling configuration. I am currently using a custom PCB to validate the HSO algorithm with the STM32G431 chip. ADC1 and ADC2 are used to sample voltage and current separately. The sampling configuration is as follows: ADC1 performs four samples for current U, current W, voltage U, and temperature. ADC2 performs four samples for current V, voltage V, voltage W, and bus voltage. After reading the HSO Start-up document, I noticed that the Ksample delay parameter is affected by the sampling order. I am unsure whether my ADC configuration is correct. If it is correct, my switching frequency is currently 16k. What should the Ksample delay be? Should I modify the ADC1 sampling to current U/V/W/temperature and the ADC2 sampling to voltage U/V/W/bus voltage?

Hello,I'm using STM32G474 to implement 6-step trapezoidal BLDC control and want to achieve full hardware-only commutation, without CPU ISR or software toggling.Setup:MCU: STM32G474Timer: TIM1 (PSC = 169, ARR = 66 → PWM 15 kHz)Mode: PWM1, edge-alignedOutputs:CH1 → PC0 (HU), CH1N → PA7 (LU)CH2 → PC1 (HV), CH2N → PB0 (LV)CH3 → PC2 (HW), CH3N → PB1 (LW)Low-sides must be ON (not PWM) when activeHall sensors: PA0 / PA1 / PA2 (currently polled)Goals:Commutation handled 100% by hardware (TIM1 + DMA/EXTI if possible)No CPU ISR or software to switch outputs during commutation (only supervision allowed)At each Hall change, TIM1 must autonomously switch active phase pairIssues:MC Workbench forces both high/low-side in PWM, incompatible with 6-step where low-sides must be always ONMC Workbench requires software-managed commutationQuestions:Can I route Hall changes (via EXTI or similar) to trigger TIM1 update/DMA to reconfigure outputs automatically?Is DMAMUX or other peripheral routing usable to fe

Hi all,I'm working on a project where I want to control a unipolar stepper motor (5-wire, 4 phase, drive mode 4 - 2 -1 , center-tapped, datasheet attached) using the STM32G0B1 microcontroller. In the past, I used the PCA9629A stepper driver IC, which worked well, but now I'm looking to simplify the design by replacing it with direct control via the STM32 and a Darlington array (ULN2003-style).My goal is to drive the stepper in both directions, ideally using PWM to control timing and phase switching more precisely. I'm aware that bit-banging is one way to do it, but I’d prefer to use hardware timers and PWM channels to offload the CPU and make it more efficient.What I’m currently struggling with is:Can I synchronize multiple PWM channels on the STM32G0B1 to implement unipolar stepper waveforms (full-step or half-step)?Any tips or example configurations using TIMx channels for this kind of stepper motor?Any advice, experiences, or even links to relevant STM32CubeMX setups or example code

Dear all,[PN]: EVSPIN32G4 & Portescap 16ECP52 Ultra EC Slotless Brushless DC Motor (Datasheet as pdf attached)[VERSION]:MC Workbench : 6.3.2WB_to_Mx : 6.2.3.template-24-04-17STM32CubeMX : 6.14.1MC Firmware Library: 6.3.2-FullTarget Toolchain : ST STM32CubeIDETarget Driver : LL - Low LevelTarget STM32 FW : 1.6.0[TOOL]: MC Profiler[DETAILS]:Motor stutters and profiler stops with error 'Speed Feedback'[EXPECTED BEHAVIOR]:smooth operation within 100-5000 RPM[HOW TO REPRODUCE]:1. MC Workbench (specify defaults and motor settings from Portescap)2. Generate LL code for STM32CubeIDE, target firmware recommended3. start STM32Cube  : nothing changed -> generate code4. start IDE, compile, run (its being uploaded)5. connect using Motor Pilot V1.2.12 profiler app shows up.6.  Detect pole pairsSpecification from motor manufacturer says two pole but :I need two rotations to come back to the same orientation, after 5 'notches' in first rotation the original position is not achieved, t

Hi all,I need to insert fault on upper key of the driver. In order to achive this Im changing dedicated  TIM1 output to Input to output low. After inserting fault motor stops. Is it possible to achive this? Could someone explain what Im doing wrong. Thanks on advance.Dawid 

Hello Everybody,MCSDK:6.3.0CubeMX: 6.1.1Workbench : 6.3.0CubeIDE : 1.15.0 I’m currently working on a sensorless FOC setup using SMO + PLL for rotor angle estimation.During the rev-up phase, I'm trying to implement on-the-fly startup, where the motor may already be rotating due to external force (like pedaling), and I want to bypass the full open-loop startup.My question is:What are the recommended conditions to ensure a safe and successful on-the-fly transition into torque mode?For example:Is there a minimum BEMF threshold (corresponding to a certain RPM) that must be exceeded to allow PLL to lock reliably?Should I apply a delay or stability check to confirm the estimated angle and angular speed are stable before switching to torque mode?Any suggestions for handling low-speed startup on uphill slopes, where the BEMF may be too weak for proper PLL locking?Thank you in advance for any advice!

Hello ST Community,I am using the EVSPIN32F0251S1 board — the 3-phase inverter based on the STSPIN32F0251 SoC — to control a BLDC motor. I am working with the ST Motor Pilot v1.2.12 tool and can see many configuration registers in register section.I would like to request a comprehensive datasheet or reference manual that explains these registers in detail — including their purpose, data format, valid ranges, and effects on motor control.This will help me better tune the motor and understand the system behavior.Any official documentation or application notes related to these register settings would be greatly appreciated.Thank you in advance!

Hello,I am trying to enable electrical angle interpolation option in MC WB for the hall sensor, however, I am not seeing any changes in the generated code. I think this option is related to the REV_PARK_ANGLE_COMPENSATION_FACTOR since it is used to calculate the electrical angle based on the speed. is it correct? if no, which part of the code is changed? Thank you/****** Hall sensors ************/ #define HALL_AVERAGING_FIFO_DEPTH 16 /*!< depth of the FIFO used to average mechanical speed in 0.1Hz resolution */ #define HALL_MTPA false /* USER CODE BEGIN angle reconstruction M1 */ #define PARK_ANGLE_COMPENSATION_FACTOR 0 #define REV_PARK_ANGLE_COMPENSATION_FACTOR 0 /* USER CODE END angle reconstruction M1 */  

In the attachments is an motor I'm trying to run with the EVLSPIN32G4-ACT.I use the latest MCSDK6.First I never get the profiler to finish. It always times out.During profiling the motor jerks and sometimes starts running at full speed after some time. Then the timeout happens.When trying to run the motor in motor pilot with PPL it does the same. never smooth running.Running with hall sensors at an offset angle off 30 deg I can get the motor running a bit in one direction but not the other. I did verify the hall angle using a scope.Running the motor with the encoder the electrical angle is correct but the motor never starts turning. Iq goes up to the max of 2A but it stays still.I'm a bit stuck after more then 2 days of tinkering. I do get this error in the FOC wizard:RCSConnect: ThreeShunt_RawCurrents_Differential_InternalGain Global NO OPAMP for Phase V

Current, I am working on choosing Microcontroller for Motor control application with Artificial intelligence. So, Please help to find the right Microcontroller. I have found STM32N657X0. But not sure whether this will have motor library. Thanks

file: hall_speed_pos_fdbk.cfunction:There maybe a bug within this code:if(pHandle->OVFCounter != 0U){if(pHandle->RatioInc)wCaptBuf = wCaptBuf * (hPrscBuf + 1)...elsewCaptBuf = wCaptBuf * (hPrscBuf + 1)...}else{if(pHandle->RatioDec)wCaptBuf = wCaptBuf * (hPrscBuf + 2)...elsewCaptBuf = wCaptBuf * (hPrscBuf + 1)...}Consider the following code:if(pHandle->OVFCounter != 0U){if(pHandle->RatioDec)wCaptBuf = wCaptBuf * (hPrscBuf + 1) + 0x10000UL...else if(pHandle->RatioInc)wCaptBuf = wCaptBuf * (hPrscBuf + 1) - 0x10000UL...elsewCaptBuf = wCaptBuf * (hPrscBuf + 1)...}else{if(pHandle->RatioInc)wCaptBuf = wCaptBuf * (hPrscBuf)...else if(pHandle->RatioDec)wCaptBuf = wCaptBuf * (hPrscBuf + 2)...elsewCaptBuf = wCaptBuf * (hPrscBuf + 1)...}

I'm working on a project involving the STM32F407VET6 microcontroller and the DRV8825 stepper motor driver. I would greatly appreciate your expertise and guidance in connecting and writing the necessary code to get the stepper motor running.If anyone has experience with this setup or can share sample code and wiring diagrams, it would be incredibly helpful. Your insights would make a significant difference in advancing my project.Thank you in advance for your support!

[VERSION]: MCWB v6.3.2[TOOL]: STM32CubeMX v6.13.0, STM32CubeIDE v1.11.5[BOARD]: STEVAL-PTOOL1V1[PROJECT]: STEVAL-PTOOL1V1_6S_SLI have the code generated by MotorControl Workbench compiling in STM32CubeIDE and it programs and runs the motor.  I managed to get the motor running at the speed I want, but I've been having a hard time making some adjustments to the parameters which are distributed through various folders and files.  In particular, I want to change the initial acceleration rate after boot up.  How/where is this controlled?Thanks

I am using  STM32H7A3 for speed control of BLDC hub motor, I also need to take the feedback speed from the driver using stm32 timer input capture mode or external clock source, I have doubt for choosing, Please any help to figure out this.....

Hi,I have a clean, freshly generated project using the MC Workbench. Normally I can compile the code and flash both cores, and it works fine after I power cycle the board (with other nucleo-64 boards I don't need to reset the board). But when I tried to debug it stuck on LL_ADC_IsCalibrationOnGoing. I've switched ADC mux from PLL2P to PLL3R without success but then I tried to switch to PER_CK and it goes through ADC calibration. I found that PLL clocks are initialized by CM7 core but whole logic runs at CM4 core. I've tried multiple debug configs but might be issue there since I'm not an expert :D Default Access port 3 - Cortex-M4 doesn't work and I've need to switch to 0 - Cortex-M7. When using 3 - Cortex-M4 it catches SIGTRAPSince App runs normally, I can use ST Motor Pilot and spin motors I assume there is something wrong with my debug configurationSetup belowHW:Power Board NUCLEO-H755ZI-Q with desoldered SB 81 and 84Control Board X-NUCLEO-IHM08M1 configured to F

Hello,I am using the STEAVL-PTOOL4A to drive a BLDC motor using the FOC with hall sensors. The motor is running ok but I noticed that during the start of the motor, the speed does not reach its final value at the same time. I mean there is a noticed difference. Sometimes it is slow, sometimes it is fast. I increase the bootstrap Capacitor time from 10ms to 1000ms I still have some differences but lower when I had 10ms.  Here are some plots when the speed reaches its target fast And here when it is slow:I took the Valfa and Vbeta since it could be related to the Capacitor voltage. So I noticed as if the startup of the capacitor does not have the same duration.Could someone explain why I have this behavior?Thank you 

[PN]: STM32G431CB (B-G431B-ESC1 reference), Custom ESC with STM32 MCU[VERSION]: MCSDK 6.3.0[TOOL]: STM32CubeIDE 1.16.1, MotorControl Workbench 6.3.0[DETAILS]:I’m designing a custom ESC board based on the B-G431B-ESC1, targeting 12S (50.4V) and 20S (84V) battery systems.The current sensing circuit from the original board was designed for a 6S battery (~25V).From my analysis, I’ve identified the following necessary hardware changes:Shunt resistors: Replace 0.003Ω with 0.0012Ω to handle higher currents without saturating the op-amp or ADC range.VBUS sensing: Adjust the voltage divider from 169k/18k to 655k/18k to ensure that the sensed VBUS voltage for 84V stays within 3.3V.Questions:Are these changes electrically correct for reliable sensing in a 20S system? Are there any additional component changes required (e.g., op-amp gain stages, filter caps, TVS diodes)? What firmware-level changes will I need to perform in:STM32 Motor Control Workbench (new shunt resistance, ADC gain, s

Hi, [PN]: B-G431B-ESC1[VERSION]: MCSDK 6.3.0[TOOL]: STM32CubeIDE 1.16.1, MotorControl Workbench 6.3.0[DETAILS]:I am designing a custom motor controller based on the B-G431B-ESC1 board. I have modified the power stage and current sensing hardware to support higher current and voltage ratings (targeting 100A and 100V). I am using MCSDK-generated firmware with FOC (Field-Oriented Control). However, I am having difficulty identifying which sections of the firmware or configuration files handle the over-current and over-voltage protection thresholds.[EXPECTED BEHAVIOUR]:Update the firmware so that the current, voltage, and protection ratings match my modified hardware specifications (100A current rating and 100V voltage rating).[HOW TO REPRODUCE]:Create a new project using Motor Control Workbench targeting B-G431B-ESC1.Replace the power stage and current sensing components to support 100A and 100V.Attempt to locate and modify the firmware-level protection thresholds.I am looking for gu

Hello,i have problems to install the ST MC Workbench (x-cube-mcsdk_5.3.3). If i want to install the file, i get the an error:Error Opening file for writing:C:ßProgram Files(x86)\STMicroelectronics\MC_SDK_5.3.3\Middlewares\ST\MotorControl\MotorControl_Config.xmlCan anybody help me?

Moved from MPUs section - not an MPU question.Error in initializing ST-LINK device. Reason: No device found on target.  I  dont understand the problem can someone help me , i used jumpers on J7 and J8  and still the problem presists how can i fix it ! , this is my first time using such a board and it is still  new 

Hi all ,I’m currently using the EVSPIN32G development board to run six-step trapezoidal commutation.I’m using Motor Pilot version V1.2.12 with the MC_6STEP GUI.In the ST Motor Control tutorial under '6-step - Optimization and troubleshooting of sensor-less firmware parameters,' I saw several phase voltage (BEMF U/V/W) waveforms. However, in Motor Pilot I can only find 'bus voltage' and 'bemf_ADC_conf'—I don’t see any options related to viewing BEMF U/V/W voltages directly. Could you please advise how I can access these waveforms, or if there’s an additional setting or tool needed to display them?Thanks.

I developed a board for 3 ph motor control with a quadrature encoder that seems to work fine. Now my client would like to modify it to use separate supplies for control/logic and motor as is standard practice in the PLC/automation world.There are a couple of ways of doing this (in order of preference):1) Power the STM32G431 die from the logic supply and the drive die and motor from the motor supply2) Power the STSPIN32G4 from the logic supply and the motor from the motor supply.3) Treat everything associated with the STSPIN32G4 and motor as a 'motor power domain' (not preferred)Thinking about approach #1:Figure 1 on page 3 of the data sheet is not super helpful.It shows VDD on both dies without a strong indication of how it gets from one to the other.Perhaps they are separate, one coming in on the VDD/VDDA pin of the left hand die and another one coming in on REG3V3/VDD of the right hand die because they are actually different nets? Power sequencing becomes a consideration.Ha