DSP28335的HPWM改为PWM后，无法将产生的pwm反馈回去，请问有大神知道么？附代码

Cup? 2020-12-01 02:55:54

InitEPwm(void)
{

EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;
EDIS;

//EPWM Module 1 config-PWMA1+PWMB1
EPwm1Regs.TBPRD = PWM_PRD; // Set timer period
EPwm1Regs.TBPHS.half.TBPHS = 0x0000; // Phase is 0
EPwm1Regs.TBCTR = 0x0000; // Clear counter

// Setup TBCLK
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count updown
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm1Regs.TBCTL.bit.PRDLD = 0;
EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO;
EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; // Clock ratio to SYSCLKOUT
EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;

EPwm1Regs.TBCTL.bit.PRDLD = 0; //当CTR=0时，时基周期寄存器TBPRD装载影子寄存器的值（新）

EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; //Counter-compare shadow mode
EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // Load registers every ZERO
EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

// Setup compare
EPwm1Regs.CMPA.half.CMPA = PWM_PRD / 4;
EPwm1Regs.CMPB = 0xFFFF;

// Set actions
EPwm1Regs.AQCTLA.bit.CAU = 0x3; // Set PWM1A on Zero AQ_CLEAR
EPwm1Regs.AQCTLA.bit.CAD = 0x3; //AQ_SET

EPwm1Regs.AQCTLB.bit.CAU = AQ_CLEAR; // Set PWM1B on Zero
EPwm1Regs.AQCTLB.bit.CAD = AQ_SET;

// // Active Low PWMs - Setup Deadband
EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
EPwm1Regs.DBCTL.bit.IN_MODE = 0x2;
// EPwm1Regs.DBRED = DEADTIME;
// EPwm1Regs.DBFED = DEADTIME;

//EPWM Module 2 config-PWMA2+PWMB2

EPwm2Regs.TBPRD = PWM_PRD; // Set timer period
EPwm2Regs.TBPHS.half.TBPHS = 0x0000; // Phase is 0
EPwm2Regs.TBCTR = 0x0000; // Clear counter

// Setup TBCLK
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count updown
EPwm2Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO;
EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; // Clock ratio to SYSCLKOUT
EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;

EPwm2Regs.TBCTL.bit.PRDLD = 0; //当CTR=0时，时基周期寄存器TBPRD装载影子寄存器的值（新）

EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; //Counter-compare shadow mode
EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO; // Load registers every ZERO
EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

// Setup compare
// EPwm2Regs.CMPA.half.CMPA = PWM_PRD / 2;

// Set actions
EPwm2Regs.AQCTLA.bit.CAU = 0x3 ; // Set PWM2A on Zero AQ_SET AQ_CLEAR
EPwm2Regs.AQCTLA.bit.CAD = 0x3; //AQ_CLEAR AQ_SET

EPwm2Regs.AQCTLB.bit.CAU = AQ_SET; // Set PWM2B on Zero AQ_CLEAR(上下对调)
EPwm2Regs.AQCTLB.bit.CAD = AQ_CLEAR; //AQ_SET

EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1; //所有被使能的ePWM模块同步使用TBCLK
EDIS;
// // Active Low PWMs - Setup Deadband
// EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
// EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
// EPwm2Regs.DBCTL.bit.IN_MODE = DBA_ALL;
// EPwm2Regs.DBRED = DEADTIME;
// EPwm2Regs.DBFED = DEADTIME;
}

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