EPWM1的初始化程序中已经初始化TZ代码如下：
EALLOW;
EPwm1Regs.TZCTL.bit.TZA = TZ_NO_CHANGE; //EPwm1A output is not changed
EPwm1Regs.TZCTL.bit.TZB = TZ_FORCE_LO; //Force EPWMxB to a low state
EPwm1Regs.TZEINT.bit.OST = 1; //Enable OST Interrupt
EDIS;
并在AD中断中让计数寄存器Count1累加，代码如下
Count1++;
if(Count1 == 3000)
{
Count1 = 0;
}
if(Count1 >= 2000 && Count1 < 3000)
{
EALLOW;
EPwm1Regs.TZFRC.bit.OST = 1;
EDIS;
}
else
{
EALLOW;
EPwm1Regs.TZFRC.bit.OST = 0;
EPwm1Regs.TZCLR.bit.OST = 1;
EPwm1Regs.TZCLR.bit.INT = 1;
EDIS;
}
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