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R
rossbossbran
Associate
April 27, 2026
Solved

Control in Open Loop Voltage mode for B-G431-ESC1 via UART2

  • April 27, 2026
  • 2 replies
  • 240 views

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 voltage

C) Set the speed in RPM

Start, 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

 

Best answer by GMA

Hello @rossbossbran,

Refer to the Firmware usage via APIs section in the Open loop description and usage chapter, available through Workbench tool > About > Documentations > Documentation > User manual.

2 replies

GMA
GMAAnswer
Technical Moderator
April 27, 2026

Hello @rossbossbran,

Refer to the Firmware usage via APIs section in the Open loop description and usage chapter, available through Workbench tool > About > Documentations > Documentation > User manual.

If you agree with the answer, please accept it by clicking on 'Accept as solution'.Best regards.GMA
    R
    rossbossbranAuthor
    Associate
    April 28, 2026

    GMA, many thanks

    At now all seems run.

    HAL commands are:

    To set Open Loop Voltage -> MCI_SetOpenLoopVoltageMode(&Mci[M1]);

    To set the voltage -> OL_UpdateVoltage(&OpenLoop_ParamsM1,((target_voltage * 32767) / 100)); target_value is my variable.

    To set the speed ->  MC_ProgramSpeedRampMotor1(ccr_val, 0); ccr_val is my variable.

    To start -> MC_StartMotor1();

    To stop -> MC_StopMotor1();

    Bye

    Rossano

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