HSO on G431

[sst1010]

Hi,

I'm trying to setup HSO on the G431, I used the B-G431B-ESC1 board as a starting guide. I'm trying to use differential sensing with internal OP-AMPs and internal PGA. I have split the currents and phase voltages across ADC1 and ADC2 but I still cannot get the HSO option to show up with MC workbench. I'm using the latest version. I have attached my board JSON file, any guidance will be appreciated.

Thanks,

Ray

[Gael A]

Hello sst1010,

When it comes to the Internal OPAMP topology, the HSO currently only supports the ThreeShunt_RawCurrents_Differential_ExternalGain_FilteredADCInput hardware variant. Apart from that, your ADC layout is correct.

[XGL]

I have a motor that uses the STM32 HSO for position‑feedback estimation. Its phase resistance is 40 mΩ at 20 °C and 45 mΩ at 70 °C. When the phase‑resistance parameter is set to 40 mΩ, the motor runs normally at around 20 °C. However, frequent start‑up failures occur once the motor temperature rises to approximately 50 °C. How can this issue be resolved?