Part Number: TMS320F280049
Other Parts Discussed in Thread: LAUNCHXL-F280049C
Dear team:
I have two problems about CBC function:
1, We have edit a CBC program refer to F28035's example program, It works well on the LAUNCHXL-F280049C. But it can't work on the board which is designed by myself.
And if we disable the CBC function, it can work well on my own board. What are the possible causes?
2, When I use LAUNCHXL-F280049C to run my program, why it can still have PWM output even if EPwm1Regs.TZCBCFLG.DCAEVT2 =1 and DCBEVT2=1?
However, the board I designed myself still has no output.
In addition, do you have any example program about cmpss, X-bar, TZDC, CBC of F280049?
Below is my program:
// ILA--->A5--->CMP2HP AnalogSubsysRegs.CMPHPMXSEL.bit.CMP2HPMXSEL = 3; // ILB--->A10-->CMP7HP AnalogSubsysRegs.CMPHPMXSEL.bit.CMP7HPMXSEL = 0; // I115-->B3--->CMP3HP AnalogSubsysRegs.CMPHPMXSEL.bit.CMP3HPMXSEL = 3; // NEG signal comes from DAC Cmpss2Regs.COMPCTL.bit.COMPHSOURCE = NEGIN_DAC; Cmpss3Regs.COMPCTL.bit.COMPHSOURCE = NEGIN_DAC; Cmpss7Regs.COMPCTL.bit.COMPHSOURCE = NEGIN_DAC; // Configure CTRIPOUT path Cmpss2Regs.COMPCTL.bit.CTRIPHSEL = CTRIP_ASYNCH; Cmpss3Regs.COMPCTL.bit.CTRIPHSEL = CTRIP_ASYNCH; Cmpss7Regs.COMPCTL.bit.CTRIPHSEL = CTRIP_ASYNCH; Cmpss2Regs.COMPDACCTL.bit.DACSOURCE = 0; // DACVALS Cmpss2Regs.COMPDACCTL.bit.SELREF = REFERENCE_VDDA; Cmpss2Regs.DACHVALS.bit.DACVAL = 3050;// IA:0--->1 trip Cmpss7Regs.COMPDACCTL.bit.DACSOURCE = 0; // DACVALS Cmpss7Regs.COMPDACCTL.bit.SELREF = REFERENCE_VDDA; Cmpss7Regs.DACHVALS.bit.DACVAL = 3050; // IB:0--->1 trip Cmpss3Regs.COMPDACCTL.bit.DACSOURCE = 0; // DACVALS Cmpss3Regs.COMPDACCTL.bit.SELREF = REFERENCE_VDDA; Cmpss3Regs.DACHVALS.bit.DACVAL = (Uint16)CUR115_CBC_CMPS_BUCK; // I115:1--->0 trip // ILA--->CMPSS2.CTRIPH--->TRIP4 EPwmXbarRegs.TRIP4MUX0TO15CFG.bit.MUX2 = 1; EPwmXbarRegs.TRIP4MUXENABLE.bit.MUX2 = 1; // I115-->CMPSS3.CTRIPH--->TRIP7 EPwmXbarRegs.TRIP7MUX0TO15CFG.bit.MUX4 = 1; EPwmXbarRegs.TRIP7MUXENABLE.bit.MUX4 = 1; // TRIP4-->DCAH EPwm1Regs.DCTRIPSEL.bit.DCAHCOMPSEL = DC_TRIPIN4; // DCAH = Comp2H // TRIP7-->DCBH EPwm1Regs.DCTRIPSEL.bit.DCBHCOMPSEL = DC_TRIPIN7; // DCBH = Comp3H // DCAH-->DCAEVT2 EPwm1Regs.TZDCSEL.bit.DCAEVT2 = TZ_DCAH_HI; // DCAH = high, DCAL = don't care // for buck ILA: 0--->1 ok EPwm1Regs.DCACTL.bit.EVT2SRCSEL = DC_EVT2; // DCAEVT2 = DCAEVT2 (not filtered) EPwm1Regs.DCACTL.bit.EVT2FRCSYNCSEL = DC_EVT_SYNC; // DCBH-->DCBEVT2 EPwm1Regs.TZDCSEL.bit.DCBEVT2 = TZ_DCBH_LOW; // DCAH = high, DCAL = don't care // for buck I115: 1--->0 ok EPwm1Regs.DCBCTL.bit.EVT2SRCSEL = DC_EVT2; EPwm1Regs.DCBCTL.bit.EVT2FRCSYNCSEL = DC_EVT_SYNC; EPwm1Regs.TZSEL.bit.DCAEVT2 = 1; // Enable DCAEVT2 CBC EPwm1Regs.TZSEL.bit.DCBEVT2 = 1; // Enable DCBEVT2 CBC EPwm1Regs.TZCTL.bit.DCAEVT2 = TZ_FORCE_LO; EPwm1Regs.TZCTL.bit.DCBEVT2 = TZ_FORCE_LO; EPwm1Regs.TZCLR.bit.CBCPULSE = 0; // CNT=0 Pulse clrar CBC // ILB--->CMPSS7.CTRIPH--->TRIP5 EPwmXbarRegs.TRIP5MUX0TO15CFG.bit.MUX12 = 1; EPwmXbarRegs.TRIP5MUXENABLE.bit.MUX12 = 1; // I115-->CMPSS3.CTRIPH--->TRIP7 EPwmXbarRegs.TRIP7MUX0TO15CFG.bit.MUX4 = 1; EPwmXbarRegs.TRIP7MUXENABLE.bit.MUX4 = 1; // TRIP5-->DCAH EPwm2Regs.DCTRIPSEL.bit.DCAHCOMPSEL = DC_TRIPIN5; // DCAH = Comp7H // TRIP5-->DCAL //EPwm2Regs.DCTRIPSEL.bit.DCALCOMPSEL = DC_TRIPIN5; // DCAL = Comp7H // TRIP7-->DCBH EPwm2Regs.DCTRIPSEL.bit.DCBHCOMPSEL = DC_TRIPIN7; // DCBH = Comp3H // DCAH-->DCAEVT2 EPwm2Regs.TZDCSEL.bit.DCAEVT2 = TZ_DCAH_HI; // DCAH = high, DCAL = don't care for buck ILB: 0--->1 ok EPwm2Regs.DCACTL.bit.EVT2SRCSEL = DC_EVT2; // DCAEVT2 = DCAEVT2 (not filtered) EPwm2Regs.DCACTL.bit.EVT2FRCSYNCSEL = DC_EVT_ASYNC; // Take async path // DCBH-->DCBEVT2 EPwm2Regs.TZDCSEL.bit.DCBEVT2 = TZ_DCBH_LOW; // DCAH = high, DCAL = don't care for buck I115: 1--->0 ok EPwm2Regs.DCBCTL.bit.EVT2SRCSEL = DC_EVT2; EPwm2Regs.DCBCTL.bit.EVT2FRCSYNCSEL = DC_EVT_ASYNC; EPwm2Regs.TZSEL.bit.DCAEVT2 = 1; // Enable DCAEVT2 CBC EPwm2Regs.TZSEL.bit.DCBEVT2 = 1; // Enable DCBEVT2 CBC EPwm2Regs.TZCTL.bit.DCAEVT2 = TZ_FORCE_LO; EPwm2Regs.TZCTL.bit.DCBEVT2 = TZ_FORCE_LO; EPwm2Regs.TZCLR.bit.CBCPULSE = 0; // CNT=0 Pulse clrar CBC
Best regards
