custom STSPIN32G4- Dual motor, 2nd motor does not work

[GSB]

[PN]: STSPIN32G4
[VERSION]: 6.4.0
[TOOL]: Motor Control Workbench
[DETAILS]:In this design, the second motor does not work as the interrupts that invoke the FOC_HighFrequencyTask by setting the motor ID into the array FOC_array[] are not enabled (TSK_DualDriveFIFOUpdate() is never called). Motor 1 happens to work as it's ID is 0 and the array is 0 initialised. Also the task TSK_HighFrequencyTask is only invoked at the PWM rate, not twice the PWM rate as it should be called once per motor, ie twice the PWM rate..

[EXPECTED BEHAVIOR]: The motor 2 current should be modulated but stays at 0 as the FOC_HighFrequencyTask(M2) is never called.
[HOW TO REPRODUCE]: just start motor 2 from motor pilot

 

 

[GMA]

Hello @GSB,

Thank you for your report.
Unfortunately, the dual drive, dual single-shunt, and single ADC use case is not covered in our current MCSDK release. We will add a restriction message in the release note to inform users of this limitation.
In our current implementation, two different ADCs are required for each drive.

[GSB]

Do you mean each motor current sense must be connected to a separate ADC. Will my 2 motor design then work or is there any other changes i need to make to drive 2 motors?

[GMA]

Hello @GSB,

Each motor must be connected to a different ADC.
You can refer to the genuine EVSPIN32G4-DUAL board, which is a dual 1Shunt topology design.