How do I set the PWM to only control the bottom MOSFETS of the DRV8312 inverter? In the f2803xbldcpwm_BLDC.h they are only applying PWM to the upper MOSFETS. Below is a snippet of that code.
/* State s1: current flows to motor windings from phase A->B, de-energized phase = C */\
if (v.CmtnPointer==0) /* */\
{ /* */\
EPwm1Regs.AQCSFRC.bit.CSFB = 0; /* Forcing disabled on output B of EPWM1 */\
EPwm1Regs.AQCTLB.bit.CAU = 2; /* Set high when CTR = CMPA on UP-count */\
EPwm1Regs.AQCTLB.bit.ZRO = 1; /* Set low when CTR = Zero */\
EPwm1Regs.CMPA.half.CMPA = (int16)(Tmp>>15); /* PWM signal on output B of EPWM1 (Q15 -> Q0) */\
EPwm1Regs.AQCSFRC.bit.CSFA = 2; /* Forcing a continuous High on output A of EPWM1 */\
/* */\
EPwm2Regs.AQCSFRC.bit.CSFA = 1; /* Forcing a continuous Low on output A of EPWM2 */\
EPwm2Regs.AQCSFRC.bit.CSFB = 2; /* Forcing a continuous High on output B of EPWM2 */\
/* */\
EPwm3Regs.AQCSFRC.bit.CSFA = 1; /* Forcing a continuous Low on output A of EPWM3 */\
EPwm3Regs.AQCSFRC.bit.CSFB = 1; /* Forcing a continuous Low on output B of EPWM3 */\
} /* */\
For my PWM I would prefer to only apply PWM to Output B.
