TMS320F28377多个epwm模块无法同步

user4104929

使用器件：TMS320F28377S，封装为100pin

目的：使EPWM7与EPWM10载波移相180度

操作方法：根据数据手册EPWM7与EPWM10不属于同一个同步链，因此在EPWM7过零的时候产生同步信号，同时选择EMPW10的同步输入源为EPWM7，具体代码如下，结果显示EPWM7和EPWM10移相180度，怀疑EPWM7的同步触发信号未送到EPWM10，是否100pin引脚的不能这样操作？

EALLOW;

    EPwm7Regs.TBPRD = TPRD_CLLC_Init;                          // Set timer period   增减计数：200=200MHz/(500kHz*2)
    EPwm7Regs.TBPHS.bit.TBPHS = 0x0000;                   // Phase is 0
    EPwm7Regs.TBCTR = 0x0000;                              // Clear counter

    // Setup TBCLK
    // TBCLK=SYSCLKOUT/(HSPCLKDIV×CLKDIV)
    EPwm7Regs.TBCTL.bit.CTRMODE   = TB_COUNT_UPDOWN;           // Count up_down
    EPwm7Regs.TBCTL.bit.PRDLD     = TB_SHADOW;
    EPwm7Regs.TBCTL.bit.PHSEN     = TB_DISABLE;             // 01表示Enable phase loading
    EPwm7Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO;            // 01表示同步由EPWM7产生
    EPwm7Regs.TBCTL.bit.HSPCLKDIV = __HSPCLKDIV;               // Clock ratio to SYSCLKOUT
    EPwm7Regs.TBCTL.bit.CLKDIV    = __CLKDIV;               // 例程的TBCLK=200MHz/(1*1)=2000MHz

   EPwm10Regs.TBPRD = TPRD_CLLC_Init;                          // Set timer period   增减计数：200=200MHz/(500kHz*2)
    EPwm10Regs.TBPHS.bit.TBPHS = 0;                       // Phase is 1800,为满足Q8与Q5同步
    EPwm10Regs.TBCTR = 0x0000;                              // Clear counter
    SyncSocRegs.SYNCSELECT.bit.EPWM10SYNCIN = 0x10;        //同步源选择Epwm7

    EPwm10Regs.TBCTL.bit.CTRMODE   = TB_COUNT_UPDOWN;           // Count up down
    EPwm10Regs.TBCTL.bit.PRDLD     = TB_SHADOW;
    EPwm10Regs.TBCTL.bit.PHSEN     = TB_ENABLE;             // 01表示Enable phase loading

    EPwm10Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_DISABLE;            // 03表示同步由EPWM7产生,传到此,不再向下传递
    EPwm10Regs.TBCTL.bit.HSPCLKDIV = __HSPCLKDIV;               // Clock ratio to SYSCLKOUT
    EPwm10Regs.TBCTL.bit.CLKDIV    = __CLKDIV;               // 例程的TBCLK=200MHz/(1*1)=200MHz

6 年多前