EPwm4Regs.TBPRD =14999; // 2K for Beep 60M/2=30M
EPwm4Regs.CMPA.half.CMPA = 7500; // Set duty as 50%
//EPwm4Regs.TBCTR = 0; // 复位为0
EPwm4Regs.TBCTL.bit.PRDLD = TB_SHADOW ;
EPwm4Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP;
//EPwm4Regs.TBCTL.bit.PHSEN = TB_DISABLE; // 默认禁止
EPwm4Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_DISABLE; //禁止同步输出
//EPwm4Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; // 默认2分频
//EPwm4Regs.TBCTL.bit.CLKDIV = TB_DIV1; //默认不分频
EPwm4Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO ; // Load on CTR=PRD
EPwm4Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
EPwm4Regs.AQCTLB.bit.ZRO = AQ_SET;
EPwm4Regs.AQCTLB.bit.CAU = AQ_CLEAR;
EPwm4Regs.AQSFRC.bit.RLDCSF = 3 ;//立即生效
//关闭蜂鸣器输出和风扇输出
BeepOff();//关闭蜂鸣器EPwm4Regs.AQCSFRC.bit.CSFB = 1
