STM32 MCUs Motor control

Hello, Is it possible to configure STEVAL-CTM015V1 to drive a 3-phase SRM (switched reluctance motor) in sensorless mode? The motor has no Hall sensors, and I cannot use the quadrature encoder signals because they are connected to a LabVIEW measurement system for speed/torque. Thanks!

Hi ST Community,I am new to ST and hope to find a fast solution on this way. Background:I am working on a hobby project and want to drive a BLDC Motor. Once I flash the SW on the target, Overcurrent Protection is hit immediately (can see on debugger and Motor Pilot (in MCSDK). Target: Custom Board based on EVSPIN32G4 Schematic (EVSPIN32G4)Chip: STM32G431VBx3. Workflow: 1.) Board Designer done over Motor Control Workbench2.) New Project created and .ioc file generated3.) Generating the Code over MX Cube (without touching any config)4.) Start Motor Pilot or Debugger -> results in overcurrent protection (PWMC_OCP_Handler() is triggered immediately and OverCurrentFlag is set to true.) My Assumption:1. It is not an HW issue because I removed the Motor from the Board so there can no big current flowing.2. I can see in MX Cube that not all of the Pins are configured from MC SDK, is that normal? Do I need to configure the missing pins (only related to motor con

I would like to ask for your guidance regarding the motor current setting under a specific torque condition.Based on the motor datasheet,I derived a linear torque–speed relationship and confirmed that, at a torque of 2928.86 gf·cm,the motor is expected to operate at 444 rpm, requiring approximately 6.6784 A according to the calculation.The assumptions and parameters used are as follows:No-load speed: 5000 rpmRated speed: 4000 rpmRated torque: 0.063 Nm (642.86 gf·cm)The derived relationship is:n = A × T + BwhereA = −1.55556, B = 5000At the target speed of 444 rpm, the estimated torque is:→ 2928.86 gf·cmThe required current was estimated using the torque constant calculated from the rated condition:Rated current: 1.7 ANo-load current (I₀): 0.3 AKt = 642.86 / (1.7 − 0.3) = 459.184 gf·cm/AUsing this value, the estimated current is:I = (2928.86 / 459.184) + 0.3 ≈ 6.6784 AHowever, when measuring the same motor using ST Profiler to obtain the Electrical Model and Mechanical Model, the result

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During Startup,after MX_NVIC_Init();when it jumps into /* USER CODE BEGIN 2 */The code is interrupted by TIMx_UP_M1_IRQHandler() in its routine, (void)R3_2_TIMx_UP_IRQHandler(&PWM_Handle_M1);the code gets stuck at /* We can not change OPAMP source if ADC acquisition is ongoing (Dual motor with internal opamp use case) */ while (0x0u != pHandle->pParams_str->ADCDataReg1[pHandle->_Super.Sector]->JSQR) { /* Nothing to do */ }I'm not able to understand why this is happening. I have not initialized any custom ADC (RCM) yet.Everything that has run, until that point is generated code only.With some research I have understood that the TIM1 update routine is infinitely waiting for the ADC(Injected Conversion) to finish. Is this some kind of race condition ?This doesn't happen always on every boot/startup. Only randomly, some times. If it does not crash at this point, I have not observed it to crash at a later point of time.Am I suppose

Are there any plans to make a Linux version of the Motor Control Workbench? @cedric H mentioned 4 years ago that it is almost ready.

I am using the B-G431B-ESC1 board, which connects to my laptop via a micro-USB to USB-A cable. After a failed connection attempt, the board is no longer detected by STM32CubeProgrammer. Additionally, a file named "File.txt" is created on the MCU after the failed attempt.The contents of the file are:"The interface firmware FAILED to reset/halt the target MCU."This file appears to be causing issues with the connection to STM32CubeProgrammer.Could anyone please help me resolve this issue? 

Hi everyone[PN]: STM32F303RE, X-Nucleo IHM17M1, Faulhaber 0620-006B[VERSION]: 6.4.1[TOOL]: MC Workbench setup[DETAILS]: Hi everyone. I'm currently trying to configure the aforementioned hardware for motor control. My question is in regard with sensored startup. In sensorless mode, the open loop motor startup is configured in the "sensorless startup parameters" window in "Speed sensing config" settings. However, when in sensored mode (hall effect), there is no option to do configure the startup behaviour of the motor. I have tried both 6Step and FOC, and in both modes the motor fails to startup, but operates normally once I give it a "nudge". At least for my application, it seems like an open-loop startup is still required. Is there any way to accommodate this, or do I have a misunderstanding of the implementation in some regard.

Hi,I'm in charge of the motor driver for a new project we've started working on. I freshly installed MotorControl Workbench, CubeMX and the IDE. After setting all parameters in Workbench and hitting "Generate the project" button I get a Java runtime Exception "unkown protocol c". I've hit a wall trying to fix this as there's almost no info about similar issues on the web.I tried uninstalling and installing different versions, too.Using windows 11 pro, 24H2. Any suggestions what might go wrong here? I've tried installing the oracle JDK and using that instead of the openJDK runtime but I couldn't get Workbench to use it (this was the only info I could find).Thanks for any help on this!

Hi,I am working in steval-esc001v1. I have set the a2212-13t-1000kv bldc motor to ran at minimum of 1000 rpm and at maximum of 9924 rpm using the foc algorithm in the motor control workbench software. I have ran till the 8000 rpm. But our goal is to ran any type of motor with in the ESC's voltage rating of 3S to 6S (11 V to 22V), also Is it possible to calibrate esc by giving maximum pwm input and minimum pwm input without profiling the esc using pc software every time if the motor changes? If not possible, how does the general ESCs available in the market can do that. If anyone worked in these area, kindly assist.Thanks and Regards,Santhosh. 

I’ve been working with STM32 microcontrollers for a while now and recently I ran into a challenge when trying to optimize UART communication for low-power applications. I noticed that a common issue arises when buffers overload during sleep–wake cycles, which can lead to missed data or timing glitches.After experimenting with a few techniques, I found that integrating DMA with interrupt-driven control logic provides a much more reliable data stream while still keeping power consumption down. In particular:Configuring UART with circular DMA greatly reduces the risk of buffer overrunsUsing USART idle line detection allows you to trigger data processing only when neededAdjusting NVIC priorities helps maintain responsiveness when multiple interrupts are activeI documented the full approach step-by-step with configuration settings and example code on my blog, in case it’s useful for anyone tackling similar problems::right_arrow: https://summertimesagas.com/Would love to hear your thoughts —

Hello,I want to learn that whether it is possible for a permanent magnet BLDC motor to track a specific torque value using field oriented control (FOC) SDK of STM?Best, Erdem

Hi,I am using the steval-esc001v1 and the A2212 1000 KV BLDC Motor with the motor parameters are, The ESC input range is 1060–1860 µs. I arm the ESC at 1000 µs and then increase the input to 1062 µs, at which point the motor starts running. After startup, the RPM and current gradually increase without any change in the input signal. Within few seconds it reaches 4000 rpm (approx), then motor suddenly jerks and then settles at a minimum speed of around 1000 RPM. Sometimes, after this jerk, the motor stops completely.I would appreciate help with maintaining the motor speed at 1000 RPM after startup.Additionally, the motor turns 1 rotation during the power-up of the STEVAL-ESC001V1. Is there a way to prevent this initial turn at power-up?Best regards,Santhosh.

I am using EVSPIN32G4 DUAL and observed the following behavior.When calling:LL_OPAMP_Enable(OPAMPx);  the OPAMP output immediately shows about 208 mV.I measured this voltage at TP25.This behavior occurs even though DAC3 is completely disabled.After calling LL_OPAMP_Enable(), I checked the DAC3 registers and confirmed that: All related DAC_CR and DAC_DHR12R registers remain set to zero. I checked these registers because DAC3 Channel 2 is configured as the OPAMP minus (−) input, as shown in the configuration below. My questions are:1. Why does the OPAMP output show approximately 208 mV when the OPAMP is enabled ,even though DAC3 has no value configured and is fully disabled?Thank you.Best regards,Pelino

Hello,I've developed custom hardware using the STSPIN32G4 MCU and I'm encountering an unusual motor behavior that I'm hoping to get some insight on.Issue : When running the motor for the first time, it begins vibrating after approximately 2-3 minutes of operation. I'm using the Motor Control Pilot application to manage the motor and control its speed.Observation: If I stop and restart the motor after this initial vibration occurs, it then runs continuously for 24+ hours without any issues. Additionally, when I test with the ST development board (EVSPIN32G4), the motor operates perfectly from the very first start—no vibration issues at all.Question: Could you provide any insights into what might cause this type of behavior? I'm particularly curious why the issue only appears on the initial startup with my custom hardware, but not on subsequent runs or with the official dev board.Any guidance would be greatly appreciated!

Dear Team,I am currently working on a motor control project using the STEVAL-IPMM15B, NUCLEO-G474RE, and X-NUCLEO-IHM09M2 evaluation boards.After referring to the user manuals, I connected the boards as per my understanding and powered the system with the following supplies:375 VDC and 20 VDC to the STEVAL-IPMM15B12 VDC to the VIN pin of the NUCLEO-G474REUpon powering the setup, I observed that the NUCLEO-G474RE was drawing approximately 0.9 A, and the onboard LDO temperature rose to around 95°C, as observed using a thermal camera. To prevent any potential damage, I immediately powered off the system and disconnected all the boards.Subsequently, I tested the NUCLEO-G474RE independently using STM32CubeProgrammer, and the board programs and operates normally when used standalone.At this stage, I would appreciate your guidance on:The correct interconnection between STEVAL-IPMM15B, NUCLEO-G474RE, and X-NUCLEO-IHM09M2The recommended power supply scheme, including appropriate voltage levels

Hi there, I am using the Motor Control Workbench tool (6.4.1) and having issues after flashing using the Motor Pilot tool (6.4.1). My current setup is the Nucleo-F401RE + Nucleo-IHM16M1 + GBM2804H-100T motor.The project creation and code generation works fine, and the code builds and I am able to flash the code onto the STM32F401RE. I am designing for 3xPWM input and 3 Current Sensing resistors. All other settings are default. Then, using the Motor Pilot tool I am encountering the "Driver Protection" error right after connection. After investigating the generated code with a debugger, I found the issue to be with these two lines in the MX_NVIC_Init() function. I have not made any changes to the generated code. I am using the STM32CubeIDE. HAL_NVIC_SetPriority(TIM1_BRK_TIM9_IRQn, 4, 1)HAL_NVIC_EnableIRQ(TIM1_BRK_TIM9_IRQn); At the second line the code fails silently and gets stuck in a infinite loop (not sure exactly where). Even after this failure,the motor pilot ap

[VERSION]: 6.2.1[TOOL]: Motor Profiler in Motor Pilot V1.2.5[DETAILS]:Motor Profiler gets stuck while profiling at "Profiling % 28".Hardware used is the inverter-board B-G431B-ESC1.[EXPECTED BEHAVIOR]: I expect the motor profiler to either finish the process or abort with an error so that I can fix any existing issues.[HOW TO REPRODUCE]: Motor is soldered to the inverter-board, power supply connected and set up to deliver the correct voltage and enough current (12V, 30A). Motor Profiler is started and connects successfully. The required motor parameters are entered accordingly. The profiling is started. At 7%, the motor twitches once, and at 21% the motor hums for half a second. Maximum observed current is around 2.5A until then. Then the process gets stuck at 28% until the notification pops up that the measurement takes too long. The board pulls standby current.

Hello,I use STM32 Motor Control  X-CUBE-MCSDK. I currently am on this stage - please see screenshot attached. For my project, I use two gimbal Sparkfun 3-phase BLDC electromotors with the encoders AS5048A. Right now, I have just one motor, see the screenshot. Could someone please clarify how to add the second motor? I also need to add two brushless 3-phase motor-drivers https://www.sparkfun.com/sparkfun-brushless-motor-driver-3-phase-tmc6300.html#content-documentation and one power board (9V 5A step down voltage regulator) https://www.pololu.com/product/5576 instead of the X-NUCLEO-IHM11M1 power board. Could you please clarify how to add them? Thank you.      

[PN]: NUCLEO-G431RB with EVLDRIVE102BH and custom motor [VERSION]: Version: 6.4.1 Build: 250722.104358[TOOL]: Motor Control Pilot[DETAILS]: Hello All, I have been working on getting a sensorless FOC driver to work. So far I am able to get the rotor to align and move under open-loop control and occasionally it can switch over to closed loop control. When the motor switches over and runs it is fairly stable. My main issue is that I am unable to get the motor to reliably make the switch from open loop to closed loop. When it fails I often get a speed error with FAULT_OVER. I am using the STO+PLL Observer and I have gone through the current loop tuning and I think that looks good, the speed loop could use a little more work once this is resolved, but if the issue is with the observer I don't want to spend too much time on it yet. I output the BEMF-A and BEMF-B signals through the DAC to an oscilloscope, and when the startup fails I see both the amplitude and the frequen

I am using ST MotorControl Workbench 6.4.1 with the STM32G431CBUX** MCU for a motor control project. When configuring the current sensing module for Three Shunt Raw Currents topology with the option Internal OpAmps + External gain network, the code generation fails with an RCSConnect error.But when I choose the option  Internal OpAmps +  Internal PGA eveything is good.I am looking to understand:1. Is the Internal OpAmps + External gain network configuration officially unsupported for STM32G431CBUX in MC SDK 6.4.1?2. Or is this a hardware resource limitation (e.g., insufficient internal op-amps, pin conflicts) specific to this MCU that blocks this configuration?  

Can someone tell me, in “auto calculate” mode of the “observer + PLL (sensorless)”, which method or theory is used to calculate the parameters G1, G2, P, and I?

Hardware Details: Custom Hardware based on the B-G431B-ESC1, 3 phase, Hall sensored FOC,MCSDK: 6.4.1The maximum speed of the motor is 3000 RPM. I have run the motor using motor profiler software and the profiler shows the maximum speed is 2500, Rs = 0.1 Ohm; LS=0.0002Pole Pairs = 5I could achieve the speed of 2500 using FOC, Hall sensor i used Over modulation, Modulation index : 93%. PWM frequency 12KHZ. I am unable to go beyond 93% MI.The problem is i need to achieve speed of 3000 as per motor specifications and customer requirement and this speed is achieved with another standard controller. Few comparisons: DC bus current when i run is 2.6A compared to 3.1 A of standard controllerPhase current is 5A, compared to 10-15A. What changes can i do to reach 3000 RPM without flux weakening. Does motor profiler use Over modulation and showed 2500 RPM?     

 I am currently testing motor operation using the EVSPIN32G4-DUAL board.I am using the motor’s Hall sensors for speed feedback.In the Speed Sensing Configuration, under Auxiliary Sensor, should the Speed Sensor Mode be set to Hall Sensor in this case?Could you please confirm whether this setting is required for proper speed sensing when using Hall sensors?Thank you in advance for your support. 

How to integrate motor suite and motor pilot for STM32F405RGT6 and run motor. I have custom power board and logic board. i tried making one but STM32F405RGT6 is not available in list and don't have idea what i can choose has alternative which has same spec and pin count has STM32F405RGT6. is there anyone who can help me develop.