STSPIN32F0A VDC BUS Voltage not sensed in the Motor Control Workbench.

[Ritul Shah]

I am using a custom board with STSPIN32F0A microcontroller. After assigning pins in the Motor control workbench, I am generating the code. Then I dump the code to the MCU by IDE.

After that 12VReg starts.

To test the motor, I go to Motor control Workbench--> Monitor section. Then I initiate UART communication and the device gets connected.

But here the "Under Voltage fault always persists. Please check the image attached below."

Note: I apply 12V input to run the Motor. Motor Used : Bull Running BR2804-1700kv

Please help me solve this problem. I have been stuck over here for more than 20 days.

THank you

Ritul Shah

[Javier1]

I got a very similar issue a year ago , i didnt fix it.

https://community.st.com/s/question/0D50X0000Bfu10fSQA/stevalipm15b-nucleof303re-xnucleoihm09m1-communication-error

[Dario CUCCHI]

@Ritul Shah​ I have some questions to better understand your setup: If I understood well, you a re using a custom board: which is the GPIO line you are using for reading the bus voltage ? Is it the PB1 as in the STSPIN32F0A evaluation board ?

Which are the values of the resistors for the bus voltage divider ?

Did you tried to sense the line used for bus monitoring with a digital multimeter, just to check whether the expected voltage is present ?

I'm just trying to figure out if it is a hardware issue or a firmware issue...

[Ritul Shah · Accepted solution]

Hello Dario,

I have been able to solve the issue.

I had a problem with UART communication, which created the problem.

[Laurent Ca...]

The question has been moved from the "Motor Control Hardware" section to the "STM32 Motor Control" section (the question is about the STM32 MC SDK). 

Best regards

Laurent Ca...