Part Number: TMS320F280049
EPWM2与EPWM1同步，且移相180°，频率100KHz，每次启动的时候，EPWM2有时候会无法正常输出：A常高，B常低，重新启动也是不行，改成别的频率65KHz，又恢复正常了占空比输出，这可能是哪里的问题呢？
启动方式：
EPwm1Regs.TZCLR.bit.OST = 1;
EPwm1Regs.TZCLR.bit.INT = 1;
EPwm2Regs.TZCLR.bit.OST = 1;
EPwm2Regs.TZCLR.bit.INT = 1;
停止方式：
EPwm1Regs.TZFRC.bit.OST = 1;
EPwm2Regs.TZFRC.bit.OST = 1;
以下是EPWM的配置：
EPwm1Regs.TBPRD = 999;
EPwm1Regs.CMPA.bit.CMPA = 332;
EPwm1Regs.TBPHS.bit.TBPHS = 0;
EPwm1Regs.TBCTL.bit.PHSDIR = TB_UP;
EPwm1Regs.TBCTL.bit.HSPCLKDIV = 0;
EPwm1Regs.TBCTL.bit.CLKDIV = 0;
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP;
EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;
EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO;
//Init duty control register;
EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;
//Set action
EPwm1Regs.AQCTLA.all=0x0000;
EPwm1Regs.AQCTLA.bit.ZRO = AQ_SET;
EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR;
//init software force register;
EPwm1Regs.AQSFRC.bit.RLDCSF = 2;
EPwm1Regs.AQSFRC.bit.ACTSFB = 0;
EPwm1Regs.AQSFRC.bit.ACTSFA = 0;
EPwm1Regs.AQCSFRC.bit.CSFA = 0;
EPwm1Regs.AQCSFRC.bit.CSFB = 0;
//Init deadband register;
EPwm1Regs.DBCTL.bit.SHDWDBFEDMODE = 1;
EPwm1Regs.DBCTL.bit.SHDWDBREDMODE = 1;
EPwm1Regs.DBCTL.bit.IN_MODE = DBA_ALL;
EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm1Regs.DBFED.bit.DBFED = 30;
EPwm1Regs.DBRED.bit.DBRED = 30;
//Init PWM interrupt;
EPwm1Regs.ETSEL.bit.INTEN = 0;
//Init AD trig;
EPwm1Regs.ETSEL.bit.SOCAEN = 0;
EPwm1Regs.ETSEL.bit.SOCBEN = 0;
//Init TZ
EALLOW;
EPwm1Regs.TZSEL.all = 0x0000;
EPwm1Regs.TZSEL.bit.OSHT1 = 1;
EPwm1Regs.TZSEL.bit.OSHT2 = 1;
EPwm1Regs.TZCTL.bit.TZA = TZ_FORCE_LO;
EPwm1Regs.TZCTL.bit.TZB = TZ_FORCE_LO;
EPwm1Regs.TZCLR.bit.OST = 1;
EPwm1Regs.TZCLR.bit.INT = 1;
EPwm1Regs.TZEINT.bit.OST = 0;
EPwm1Regs.TZFRC.bit.OST = 1;
//Init chop;
EPwm1Regs.PCCTL.bit.CHPEN = CHP_DISABLE;
EDIS;
EPwm2Regs.TBPRD = 999;
EPwm2Regs.CMPA.bit.CMPA = 332;
EPwm2Regs.TBPHS.bit.TBPHS = 499;
EPwm2Regs.TBCTL.bit.PHSDIR = TB_UP;
EPwm2Regs.TBCTL.bit.HSPCLKDIV = 0;
EPwm2Regs.TBCTL.bit.CLKDIV = 0;
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP;
EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE;
EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;
//Init duty control register;
EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;
//Set action
EPwm2Regs.AQCTLA.all=0x0000;
EPwm2Regs.AQCTLA.bit.ZRO = AQ_SET;
EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR;
//init software force register;
EPwm2Regs.AQSFRC.bit.RLDCSF = 2;
EPwm2Regs.AQSFRC.bit.ACTSFB = 0;
EPwm2Regs.AQSFRC.bit.ACTSFA = 0;
EPwm2Regs.AQCSFRC.bit.CSFA = 0;
EPwm2Regs.AQCSFRC.bit.CSFB = 0;
//Init deadband register;
EPwm2Regs.DBCTL.bit.SHDWDBFEDMODE = 1;
EPwm2Regs.DBCTL.bit.SHDWDBREDMODE = 1;
EPwm2Regs.DBCTL.bit.IN_MODE = DBA_ALL;
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm2Regs.DBFED.bit.DBFED = 30;
EPwm2Regs.DBRED.bit.DBRED = 30;
//Init PWM interrupt;
EPwm2Regs.ETSEL.bit.INTEN = 0;
//Init AD trig;
EPwm2Regs.ETSEL.bit.SOCAEN = 0;
EPwm2Regs.ETSEL.bit.SOCBEN = 0;
//Init TZ
EALLOW;
EPwm2Regs.TZSEL.all = 0x0000;
EPwm2Regs.TZSEL.bit.OSHT1 = 1;
EPwm2Regs.TZSEL.bit.OSHT2 = 1;
EPwm2Regs.TZCTL.bit.TZA = TZ_FORCE_LO;
EPwm2Regs.TZCTL.bit.TZB = TZ_FORCE_LO;
EPwm2Regs.TZCLR.bit.OST = 1;
EPwm2Regs.TZCLR.bit.INT = 1;
EPwm2Regs.TZEINT.bit.OST = 0;
EPwm2Regs.TZFRC.bit.OST = 1;
