STM32 MCUs Motor control

Hi,   I am trying to create an online angular velocity controller where my torque is dependent on the angular velocity of the motor (motor being driven by the plant). Basically, I want to resist the movement from the plant in a way that keeps the control loop passivity. My torque control loop is running at a 1 ms interval. The issue is that the encoder feedback loop from STM's motor control, generated mc_tasks is running at 1 ms as well. I am running into bandwidth issues here and need to increase the rate of the encoder feedback loop. Is there a way to reliably do this? I have doubled the rate by editing drive_parameters.h to set the SPEED_LOOP_FREQUENCY_HZ to 2000 instead of 1000. SYS_TICK_FREQUENCY is at 2000 so I am limited here to 2000.  At the end of the day I guess I am wondering about how I can increase my frequency reliably, and learn about if there are drawbacks to doing so. For reference, I am using a quadrature encoder encoder.  

Hello Everybody,MCSDK:6.3.2CubeMX: 6.1.4Workbench : 6.3.2 I want to test the motor first with the open loop APIs. I follow the instructions of the user mannual and write the code as follows:My question is: I captured the U, V, and W three-phase waveforms using an oscilloscope and found that the duty cycle settings are correct. However, the waveforms remain stuck in only one section (they never change) and fail to drive the motor through all six sections. Could you help analyze what might be causing this issue? Thanks!

I am currently writing code for the EVLServo1 board using function calls to control the motor and send information about the motor back to a STM32H735G-DK discovery board using the FDCAN bus.  Everything seems to be working really well and I am sending back the measured speed of the motor, Iq, and power using the following function calls from the mc_api.c file:MC_GetMecSpeedAverageMotor1() - Measured speedMC_GetIqdMotor1_F() - IqMC_GetAveragePowerMotor_F() - PowerIn the Motor Pilot software it also shows the temperature of the heatsink as measured by the NTC Thermistor on the board inverter board of the EVLServo1 kit.  I'd really like to be able to report this back to the STM32H735G-DK so I can display it on the screen along with the other info, however, I don't see a function call that will return this information.  Is there a function call in another file within the project I can use?  Is there some other method for doing this?

Hi ST Team,I'm using the EVSPIN32F0601S3 development board and attempting to control a BLDC motor via Motor Control Workbench 6.3.0 and Motor Pilot 6.3.0.Everything connects successfully when I open Motor Pilot — the board is detected, and parameters are correctly loaded. However, as soon as I press the "Start" button to run the motor, Motor Pilot immediately disconnects from the board. There's no error message aside from the disconnect itself.What I've tried so far:Verified UART connection (using STLink onboard)Ensured the power supply to the board and motor is stableReflashed the firmware generated by WorkbenchTried different USB cables and portsRechecked motor parameters (voltage, current, sensor type, etc.)Environment:Motor Control Workbench & Motor Pilot 6.3.0EVSPIN32F0601S3 with STSPIN32F0601BLDC motor (sensorless)Windows 10It seems like the firmware crashes or resets when the motor is commanded to start, leading to a loss of communication with Motor Pilot.Has anyone else exp

Thanks.

  Hi I am new to this tools but basically I have tried with 3 different boards STEVAL-SPIN3204  but I am not able to connect the board or do anything useful with it. I have connected the device through USB to my computer, initially LD1 and DL1 where on. The device is recognized as mass storage and there are two files on of which is FAILED with message"The interface firmware FAILED to reset/halt the target MCU" I have used STM32CubeProgrammer to try to connect and inspect the device. I also tried upgrading the firmware. This seems to made it worse since now the DL1 led does not turn off and the device seems to not be recognized at all at in STMCube32IDE. This behavior seems consistent with 3 boards, after upgrading  the DL1 led does not turn on. I am  able to compile the project but not load it. My board is rev2.1 STM32CubeIDE Version: 1.19.0Build: 25607_20250703_0907 (UTC) STM32CubeProgrammer release v2.20.0  

Hi , I am using multiple ST Evaluation Boards and all worked well . However , in one of the board i am facing issue of UART connection . Board is ST   EVAL-CTM012V1A . STMCSDK is 6.3.2, Keil u vision 5 , STM32cube Mx 6.11.1 . Baud rate tried :- 9600,115200,19200,1843200 . . However board is running fine in debug mode . Please help me in solving this issue

I am using custom board and MCSDK 6.4.0, I need some clarity on the Application current and the overcurrent protection variablesThe above setting is related to the Max application current.And the over current protection settings in MCSDK is as belowHere it is mentioned as 45A. Now my question is do i need to change this value and how this is related with the 1.6A max application current? I am using FOC to run the motor.

I am using the following tool versions:MC Workbench: v5.4.8STM32 Firmware Package: v1.11.3STM32CubeMX: v6.2.0Here are the steps I follow:Open the ElectronicSpeedControl.stmcx file in STM32 Motor Control Workbench and save it to a new, empty location.Go to Tool → Generation. In the dialog window that opens:Select STM32CubeMX v5.2.0 or laterChoose STM32CubeIDE as the target toolchainSelect STM32 FW V1.11.3 or later for the firmware packageEnsure the HAL (Hardware Abstraction Layer) option is selected for Drive TypeClick UPDATE to proceedThis starts the code generation process.Then click RUN STM32CubeMX to open the .ioc file in STM32CubeMX.Once opened, click Generate Code (top right corner).Open the generated project in the target IDE (STM32CubeIDE).Build the project and flash the resulting .bin file to the MCU using STM32CubeProgrammer and ST-Link V2.After flashing, the motor starts beeping and runs smoothly when PWM signals are applied. However, once the board (STEVAL-ESC001V1) is resta

Hello,I am using the EVLSERVO1 board with a differential quadrature encoder (A and B phases). The encoder has a resolution of 4096 pulses per revolution, and I am observing issues when the motor speed exceeds a few hundred RPM.Specifically, the system becomes unstable above ~500 RPM. The motor fails to spin reliably, and the encoder appears to stop providing meaningful feedback(past 500 rpm, the encoder value stays the same about). However, when I probe the differential signal (A+ minus A−), the waveform looks clean on the scope.Is this behavior expected due to the encoder being considered "high resolution"? Would performing the rework suggested for high-resolution encoders (replacing R81 and R82 with 330 Ω...) help resolve this issue?I am unsure where the resolution or frequency cutoff is that necessitates this rework, and would appreciate any guidance.Thank you!

I'm currently working on a project using the IHM16M1 expansion board, and I would like to know the steps required to initialize the STSPIN830 motor driver

Hi,I have generated code for HSO on a workbench as recommended by the release note. But we are thinking of using the STM32F4 or STM32F7 series of controllers. So, my question is: Does the HSO algorithm work for dual-channel FOC on the STM32F4 or STM32F7 boards if we port the code? HSO is not for the STM32F4 Series. Is it due to peripheral limitations or not introduced? Thanks,Rahul D

Hello everyone,I am currently using ST Motor Control Workbench v6.4.0 along with STM32CubeMX v6.14.1 installed on my Windows PC. Although STM32CubeMX is correctly installed and working independently, when I click "Generate Code" in the Motor Control Workbench, the program fails to detect STM32CubeMX. It shows the message:“STM32CubeMX not found – ver. '6.0.0' or higher is required.”With that, I am not able to detect "Target Toolchain" and "Firmware Package Version" on Motor Control Workbench 6.4.0I would be grateful if you could assist or provide confirmation regarding this workaround or a more official solution in case of future updates.

I have created a custom inverter board using STMC Board Designer. And there is no error reported by Board Designer.  However when I use the inverter board to creat a workbench project, it tells me "Current Sensing" item has some errors without details. So I have no idea about what is the exact error and how to solve it.The h723.7z is my inverter board config.And I hope the WorkBench can show more and clearer information of the error or warning in the future version.

Hi team,     Please suggest a MCU which has to support Motor control ,Lockstep, Matlab and with ASIL D compliance for the eVTOL application(65Kw motor). Thanks & RegardsJayakeerthana P

I tried to rotate the nema34 stepper motor through hss86 motor driver using the stm32 G474RE. I configured the pins as follow:  Pul - connected to Tim 3_CH 1(PA6) , Dir - connected to GPIO OUTPUT_B_10 , Ena - connected to GPIO OUTPUT_D_2 and all the positive terminals to the 5V battery and grounded it to the stm32 pin(GND) . I also generated the output pulse and upload my code to the stm 32 without any error, Although the motor is not rotating. Is there any specific code I have to write  beyond the PWM generation code.  

 Using HAL_SPI_TransmitReceive properly. I've corrected the code to send the command 0x25 followed by two dummy bytes (0x00, 0x00) in a single transaction to read the ACC register.However, now I’m facing a new issue: no matter what value I set for ACC, when I read it back, I always get 0x80 0x00 0x89 (i.e., 128 0 137). I double-checked the write sequence as well and it appears to complete successfully.(I am able to execute run command) I’ve also attached the image and my updated code for reference. Any suggestions on what I might be missing?Additionally, I’ve already set all KVALs and MAX_SPEED to their maximum values, yet the motor won't go beyond ~1000 steps/sec. Beyond that, it starts vibrating heavily and doesn’t rotate at all, I am using NEMA 17 and NEMA 23 with 24v Supply and tried with no load condition and with some load as well. Phase resistance for NEMA 17 is 3.3R  and Inductance 2.8 mH/phase and fot NEMA 23 has 2.23R and Inductanc

I am working on a project to drive a sliding door using a PMSM motor in position control mode (details are given in the below). I determined the PID coefficients using ST AN5464. The motor operates very good during normal right/left rotation commands. However, when the motor is holding a fixed position, it sometimes exhibits small vibrations.When the motor is in a fixed position and I use the PWMC_SwitchOffPWM(pwmcHandle[M1]) function to disable PWM, the vibrations also stop. However, disabling the PWM is not desired in the project.Below, I have attached a graph obtained using ST Motor Pilot V6.4.0 that shows the I_Q_MEAS and I_Q_REF signals of the PMSM motor during vibration in standstill (Although I couldn't take a screenshot as I wanted, it's clear that the I_Q_MEAS and and I_Q_REF signals are oscillating). As far as I understand, the I_Q_MEAS and I_Q_REF signals should remain stable when the motor is stationary.Is there anyone who can help me with this issue? I would appreciate any

 I'm  using button in the MC_APP_PostMediumFrequencyHook_M1 to stop the motor. When I press the button, the motor enters freewheel mode, so it is not actively braked — it simply coasts down.Later, when I release the button and increase the potentiometer, the motor starts again via a speed ramp. However, I noticed that the ramp always starts from 0 speed, even though the motor was still spinning due to the freewheel behavior.As a result, the motor gets "locked" momentarily (due to the controller assuming 0 speed), and then accelerates. This is not the behavior I want. Since the motor never truly stopped (freewheel), I would like the ramp to continue from the current actual speed, not from 0.How can I make the ramp start from the actual mechanical speed of the motor when restarting after freewheel?__weak void MC_APP_PostMediumFrequencyHook_M1(void){ uint16_t rawValue = RCM_ExecRegularConv(&PotRegConv_M1); /* USER SECTION BEGIN PostMediumFrequencyHookM1 */if(H

Hi ST Community,I'm working with a sensorless BLDC motor and using the ST Motor Control Profiler to extract the required motor parameters, as I don't have access to the exact datasheet values. I'm facing some issues and would appreciate guidance.What I did:Entered motor information including Max Current, Max RPM, and Number of Poles.When I entered the actual Max Current, the profiler often gave Speed Feedback Faults or failed profiling.To overcome this, I reduced the current in steps from 93% down to 80% of Max Current, and profiling succeeded with reduced current values.Observations:The profiler gave significantly varying results, even though the motor and setup remained the same.Not reaching max RPM Specified.Some examples of variation:BEMF Constant: ~±3 Vrms/kRPMFriction: 700 to 1450 µN·m·sInertia: 20,000 to 45,000 µN·m·s²This creates confusion — which profile values should I consider as trustworthy for tuning my motor with Motor Control Workbench?Questions:Which current value range

Hello STM community,I am planning to use the Nucleo-H755ZI board (STM32H7 series) in combination with the X-NUCLEO-IHM07M1 motor driver expansion board, and I have a couple of questions regarding compatibility and setup:Compatibility:Is the Nucleo-H755ZI board fully compatible with the X-NUCLEO-IHM07M1 motor driver expansion when plugged directly into the Arduino-compatible headers (MORPHO header)? I want to ensure that the board can drive motors as intended without any issues in terms of voltage levels or pin mappings.Required Modifications:Does the Nucleo-H755ZI-Q variant (specifically) require any modifications or special considerations for proper integration with the X-NUCLEO-IHM07M1? I am aware that the STM32 Nucleo boards generally follow the same Arduino pinout, but I want to confirm if there are any specific steps or precautions I should take when using this combination.Any help or insights from someone who has already worked with this combination would be much appreciated!Than

Hi everyone!I am currently working on the steval-eth001v1 kit. If I open the project attached in the firmware, there is no problem. But when I want to create a new project using IAR or Keil C, an error appears that the c file is missing.Anyone who has encountered the same problem can help me?I can't find the c file containing the above functions in the new project, but when I run the project attached in the firmware, it doesn't report an error. 

Dear Community, I'm using a custom board based on the EVSPIN32G4 with an STLINK-V3MODS probe.I want to power the LDO using only the 5V from USB, just to flash the microcontroller.My REGN voltage is 4V(VUSB), but the 3.3V output from the LDO is 0V.I don't understand why. Any ideas?   Thanks,

Hi All,I am trying to get up and running the above hardware. I downloaded the software for the board, and we already use IAR compiler here. After compiling and downloading (via the STLink), the system runs the program just fine.However, I just need to run the system with the onboard POT and it is not moving or energizing the motor at all.I changed the 6step_conf.h file to POTENTIOMETER_INTERFACE = 1 and all others to 0. Nothing happens.All the voltages to the board are perfect (running 70VDC to the board via a 7 amp programmable power supply).All help would be greatly appreciated. This is my first intro into using the part. Time is very tight.regards,Charles

ST Documentation describes how to determine prior gains of Current PI controllers. My doubts are:1. Will these gains work for all load conditions? How to tune them under varying load conditions? What is the documentation/process related to it, please share?2. How is Motor Control Workbench auto calculating PI Gains for Speed Controller Regulator? Please share documentation/formulas related to it. Official documentation is only about Current PI controllers gains determination. Thank you for your time and support.