TI中文支持网/****************************/
// EPWM2A/B
/****************************/
//时基模块
EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // Pass through
EPwm2Regs.TBCTL.bit.PHSEN = TB_DISABLE;//TB_ENABLE;
EPwm2Regs.TBPHS.half.TBPHS = 0;
EPwm2Regs.TBCTR = 0x0000;
EPwm2Regs.TBPRD = PWM_INV_TBPRD; // 216us
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN;
EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;
EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;
//中断模块
EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO; // Enable INT on Zero event
EPwm2Regs.ETSEL.bit.INTEN = 1;//PWM2_INT_ENABLE; // Enable INT
EPwm2Regs.ETPS.bit.INTPRD = ET_1ST; // Generate INT on 2nd event
EPwm2Regs.ETSEL.bit.SOCAEN = 1;
EPwm2Regs.ETSEL.bit.SOCASEL = 1; //ZERO
EPwm2Regs.ETPS.bit.SOCAPRD = 1; //1st
//EPwm2Regs.ETPS.bit.SOCACNT = 1; //1st
//配置比较模块
EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
//EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_IMMEDIATE;
//EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_IMMEDIATE;
EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO_PRD; //CC_CTR_ZERO_PRD //CC_CTR_ZERO
EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO_PRD;
EPwm2Regs.AQCSFRC.bit.CSFA = FORCE_LOW;
EPwm2Regs.AQCSFRC.bit.CSFB = FORCE_HIGH;
EPwm2Regs.CMPA.half.CMPA = 0;
EPwm2Regs.CMPB= 0;
//配置比较动作模块
EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR;
EPwm2Regs.AQCTLA.bit.CAD = AQ_SET;
EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; //DB_ACTV_LO;
EPwm2Regs.DBCTL.bit.IN_MODE = DBA_RED_DBB_FED;
EPwm2Regs.DBRED = DB_2US;//DB_1p5US, 1us=90
EPwm2Regs.DBFED = DB_2US;
///////////////////////////////////////////
以上为初始化时的代码，经过测试不同时执行下面两句话时(若只执行其中一句)，B为高，A为低，只要同时执行两句，则A为低，B也为低。
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; //DB_ACTV_LO;
而且更奇怪的就是无论我如何改变A B的强制电平（下面两行代码），均无效，即使我屏蔽上面两行代码，始终都是A低，B高！
EPwm2Regs.AQCSFRC.bit.CSFA = FORCE_HIGH;
EPwm2Regs.AQCSFRC.bit.CSFB = FORCE_HIGH;
HeiHei：这几个寄存器都是有写保护的吧，在前后加上EALLOWEDIS试试
/****************************/
// EPWM2A/B
/****************************/
//时基模块
EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN; // Pass through
EPwm2Regs.TBCTL.bit.PHSEN = TB_DISABLE;//TB_ENABLE;
EPwm2Regs.TBPHS.half.TBPHS = 0;
EPwm2Regs.TBCTR = 0x0000;
EPwm2Regs.TBPRD = PWM_INV_TBPRD; // 216us
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN;
EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;
EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;
//中断模块
EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO; // Enable INT on Zero event
EPwm2Regs.ETSEL.bit.INTEN = 1;//PWM2_INT_ENABLE; // Enable INT
EPwm2Regs.ETPS.bit.INTPRD = ET_1ST; // Generate INT on 2nd event
EPwm2Regs.ETSEL.bit.SOCAEN = 1;
EPwm2Regs.ETSEL.bit.SOCASEL = 1; //ZERO
EPwm2Regs.ETPS.bit.SOCAPRD = 1; //1st
//EPwm2Regs.ETPS.bit.SOCACNT = 1; //1st
//配置比较模块
EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
//EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_IMMEDIATE;
//EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_IMMEDIATE;
EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO_PRD; //CC_CTR_ZERO_PRD //CC_CTR_ZERO
EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO_PRD;
EPwm2Regs.AQCSFRC.bit.CSFA = FORCE_LOW;
EPwm2Regs.AQCSFRC.bit.CSFB = FORCE_HIGH;
EPwm2Regs.CMPA.half.CMPA = 0;
EPwm2Regs.CMPB= 0;
//配置比较动作模块
EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR;
EPwm2Regs.AQCTLA.bit.CAD = AQ_SET;
EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; //DB_ACTV_LO;
EPwm2Regs.DBCTL.bit.IN_MODE = DBA_RED_DBB_FED;
EPwm2Regs.DBRED = DB_2US;//DB_1p5US, 1us=90
EPwm2Regs.DBFED = DB_2US;
///////////////////////////////////////////
以上为初始化时的代码，经过测试不同时执行下面两句话时(若只执行其中一句)，B为高，A为低，只要同时执行两句，则A为低，B也为低。
EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC; //DB_ACTV_LO;
而且更奇怪的就是无论我如何改变A B的强制电平（下面两行代码），均无效，即使我屏蔽上面两行代码，始终都是A低，B高！
EPwm2Regs.AQCSFRC.bit.CSFA = FORCE_HIGH;
EPwm2Regs.AQCSFRC.bit.CSFB = FORCE_HIGH;
jianxing ding：
回复 HeiHei:
AQCSFRC？有写保护？没有吧，试过一样的不行
