Hi, Fred,
As you know that there are two on-chip OPAMPs for MC56F81xxx family, if you use the MC56F81000-EVK plus FRDM-MC-LVBLDC , the on-chip two OPAMPs are not used, we have not the example code to control BLDC with the two OPAMPs involved.
If you are interested in the OPAMP utilization, we have the example code in SDK package:
...........\SDK_2_10_0_MC56F81000-EVK\boards\mc56f81000evk\driver_examples\opamp
You can download the SDK package for MC56F81xxx from the link:
https://mcuxpresso.nxp.com/en/welcome
BTW, there are two dedicated OPAMP on the FRDM-MC-LVBLDC, I suppose that you can use the on-chip OPAMP to replace them.
Hope it can help you
BR
XiangJun Rong