STM32 MCUs Motor control

Hi,Some feedback for ST on the latest motor control MCSDK_v5.Y.3: Within files mcptl.h and aspep.c, bad practice to name an enumerated constant 'free', as of course conflicts with stdlib.h free function. We include stdlib.h for a few standard functions, though not free. Anyway, the duplicate name use causes a compilation error, that was not present with MCSDK_v5.4.5. Our workaround: Within the two mentioned files, rename free to free_ (one place in mcptl.h, three places in aspep.c)Also, while writing, ST, do you have some documentation about the ASPEP protocol? A quick google yielded none, though I see someone else requested, two months back. Presently, we are using the published information about the 5.4.5 Motor Control Protocol, to communicate with a device other than the workbench. To use 5.Y.3, we would need to changeover our device comms to use ASPEP. I'll take a guess at what that stands for. Is it Advanced Serial Private Embedded Protocol?Mods, if moving parts of a thread to a m

I started getting these errors on loading the ST Motor Pilot App (V0.9.9)[WARNING] - MotorControlRegistersBank: Accessing register [977] STOCORDIC_C1 for motor 0 resulted in error[5] . Changing register's access accordingly to avoid getting this error again[WARNING] - MotorControlRegistersBank: Accessing register [1041] STOCORDIC_C2 for motor 0 resulted in error[5] . Changing register's access accordingly to avoid getting this error again[WARNING] - MotorControlRegistersBank: Accessing register [1680] DAC_OUT2 for motor 0 resulted in error[5] . Changing register's access accordingly to avoid getting this error again[WARNING] - MotorControlRegistersBank: Accessing register [1616] DAC_OUT1 for motor 0 resulted in error[5] . Changing register's access accordingly to avoid getting this error againHow can I troubleshoot this?

I am making my custom board based on the B-G431B-ESC1 board and do not understand how to make the same analog measurement with 3 op-amp and ADC channels. For some reason, there is no choice of 3 op amps from the drop-down list, only 2.

in regular mode,ADC with DMA would be faster than injected mode,isn't it right?

Another question, my project works on 30kHZ PWM frequency. Can I change the PWM frequency from fixed frequency to random frequency??

I am running a BLDC motor with FOC on an M4 part (STM32G431 64k) but for other uses we are considering a 256k RAM part. Can the FOC control be run on a M0 part?

When motor is running at fixed frequency (30kHz), there is a slight noise. Hence, I want to see the varying PWM in runtime in order to minimize the noise

Hi All,Can anyone point me to a material to use in configuring a general timer on stm32 to interface with the 3 hall sensors from a bldc motor and How to estimate the speed from it?

the message shows need to download FW.G4.1.11.2 firmware, but the latest firmware is 1.4.0, what's wrong with this ? any one can give some suggestion? thanks a lot.

HiCan you make an application for 2 axis motor control and reading from 2 position encoders on the STM32F746G-Disco?Andrzej

I was using my EVSPIN32G4 eval board to spin my 2 pole pair BLDC 24V 2A motor in sensorless FOC mode. I created a motor profile with Motor Control Workbench 5.Y.1 which worked reliably with many motors. One motor (same kind) was mechanically jammed and not rotating. I repeatedly attempted to start the jammed motor. At some point the eval board would intermittently disconnect from Pilot 5.Y.1. Later, when trying to debug on the bench, I found it was not talking to the host at all, so I couldn't communicate with Pilot or with the IDE for re-programming. I put my finger on the STSPIN32G4 device and it was very hot. I measured Vcc (gate drive voltage) and it was 8V as opposed to the 12V where it usually is. The primary motor current path (FET Drain-Source, Sense Resistors) are in tact but the controller has failed. Could this be related to sourcing gate drive current? Is there a way to limit the amount of gate drive current without big series resistors?

@Enrico Poli​ I downloaded all the software you sent me Motor Control SDK,Motor Control SDK,Motor Control SDK.Then I opened in motor control workbench the six step sensorles exaple for st spin3204, and generated the code but then I do not know how to run it properly?

I have this kit, am using the MCSDK under STM32CubeIDE, and everything seems to be functioning fairly well. I'm still getting the occasional fail to start issue, but what I'm really trying to do is to be able to specify motor speed +/- 1 RPM, and be able to hold that speed to +/- 0.5 RPM.As far as speed accuracy, I'm getting better results with a pretty hefty flywheel, and I have the Observer+PLL Variance threshold parameter set to 5% in the Workbench app, but I still have more variance in speed than I'd like. What are the best parameters to tweak / signals / variables to monitor to hold speed better? Would using Hall Effect sensors as an auxilliary sensor help with speed accuracy?As far as being able to specify the desired speed, I'm defining SPEED_UNIT to be _001HZ, and with the hFinalSpeed parameter to MCI_ExecSpeedRamp being a 16 bit integer, I just don't seem to be able to get 1 RPM granularity at RPM < 1000. Also, the docs / comments do not seem clear that using _001HZ will he

I want to change few parameters detected by motor profiler in my code(After code generation) But i don't want to change it manually..I am trying to changes in pmsm_motor_parameter.h . Can you tell me which files are used to write parameters from motor profiler?I want to test wide range of value change of parameters and it effect on motor behaviour

I used motor profiler .Saved the paramters and then while using the examples Imported those paramters.I used following as user code in main.c in while(1): if( MCI_GetSTMState() == RUN ) {   MCI_ExecSpeedRamp(MCI_EXECSPEEDRAMP,1000,2000);  MCI_StartMotor(MCI_EXECSPEEDRAMP); } else; MCI_StopMotor()How to start motor with user code in example from MC WB?

I have a motor , but how can I calculate the speed PI parameter

I have a BLDC motor running reliably with FOC code on a STM32G431 MCU. For unrelated mechanical reasons we need to drop our inertia by about 4x from where it is running today. For the speed loop I fully understand lowering inertia raises the loop gain and I'll need to lower the gain in the speed loop. What I need some guidance on is how to adjust the spin up ramp and whether I need to change the observer gains. Without any changes to the code I am now getting a MC_SPEED_FDBK error. I cannot run this motor on the profiler because it is using a custom MCU board and driver not supported by the profiler. The motor Rm, Kt, Lm and Kb are exactly the same; we are just removing mechanical inertia.Any guidance is appreciated.

Dear All,Does anybody have any documentation about this motor controller's communication protocol?I would like to use this controller - as it is, connecting a STM32 via UART (not PPM, since I'd like to get the measured data back), but I could not find any relevant documentation about the protocol.Thanks and Best Regards,Matyas

Hello,I am using an X-NUCLEO-IHM08M1 board plugged on a G431 Nucleo board and I have a question regarding the Nucleo power supply.In the IHM08 Quick Start Guide it is noted that the JP5 PWR jumper must be set to E5V (powered from morpho connector), however in the Motor Profiler information page (when you click on "Remember to properly configure the boards in Motor Control Mode" - Step 1) it is 5V_STLK that is mentioned (powered from USB).Which one should be used?Also, is is recommended to use an "external Isolated ST LinkConnect", highlighting the Nucleo STLINK USB connector. What is this device? (the new B-STLINK-ISOL?)Thank you.  

NUCLEO-G431RB + X-NUCLEO-IHM07M1MCWB 5.Y.3 + STM32CubeIDE 1.7.0Maxon motor combination: 200142 + 166935 + 673026I have created a project to drive a BLDC motor with the above mentioned equipment, I was able to create a basic project to drive the BLDC very quickly because of the knowledge gained from the F303RE+IHM07M1 combination. I have then cried to use the same method to achieve ADC however I was not able to do so. Attached is the main.c file from my project, the ADC code present in this file is the same as in the other project with the only difference of using ADC2 instead of ADC1 and the timing of the conversion. Thanks in advance Kind RegardsManpreet Singh

But i don't want to use Motor profiler neither i want to enter the values to MC WB manually.How can paramters be estimated ?

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Ian using a dyno to apply load and using B-G431B-ESC1 with a pmsm motorSPEED: KI= 950, KP= 13767, Torque KI= 1005 reduced from 3005 earlier torque kp=82 (tuned settings)I have attached a snapshot ,as gradually I increase load (oz-in) in steps1) at rpm <1500 I am able to track the curve with increased load in const rpm​2) At rpm >2000 ,at higher load region the speed oscillates heavily (see snapshot attached)I have attached the datasheet of motor from which it is clearly visible that upto 2880 RPM it can take continueous load torque of 39 oz-inCould you suggest what could be the problem?

I have STM3210B-MCKIT PMSM starter control kit, It is worked through LCD and for start and stop the motor.but I would like to develop a new controller and change the control system. I would like to a guide and If there is a library that has the projects for this starter kit? how can I measure the currents with an oscilloscope through ADC, I can find these pins in the kit?I asked after a spent a long time, so please help me!