TI中文支持网不知道下面这段话是什么意思。求老师们解答。谢谢
The specified condition on the pins is automatically cleared when the ePWM time-base counter reaches zero (TBCTR = 0x0000) if the trip condition is no longer present. The condition on the pins is only cleared when the TBCTR = 0x0000 no matter where in the cycle the CBC flag is cleared.
Forrest：
CBC是TZ信号出现以后，基于每个周期切断PWM输出的，如果TZ保护信号撤除掉了，那么下一个PWM周期输出将恢复。
One Shot是TZ保护信号出现则彻底关断PWM输出，在保护信号撤除以后，需要软件清除掉TZ保护寄存器相应标志后，PWM才会继续输出。
不知道下面这段话是什么意思。求老师们解答。谢谢
The specified condition on the pins is automatically cleared when the ePWM time-base counter reaches zero (TBCTR = 0x0000) if the trip condition is no longer present. The condition on the pins is only cleared when the TBCTR = 0x0000 no matter where in the cycle the CBC flag is cleared.
Harry xie1：
回复 Forrest:
老师，还是有点不明白cycle-by-cycle 和 one-shot trip event
我们知道：
a、The trip-zone signals at pins TZ1 to TZ6 (also collectively referred to as TZn) are active low input signals.When one of these pins goes low, it indicates that a trip event has occurred.
b、Each TZn input can be individually configured to provide either a cycle-by-cycle or one-shot trip event for a ePWM module. The configuration is determined by the TZSEL[CBCn] and TZSEL[OSHTn] control bits (where n corresponds to the trip pin) respectively.
c、The specified condition on the pins is automatically cleared when the ePWM time-base counter reaches zero (TBCTR = 0x0000) if the trip event is no longer present. Therefore, in this mode, the trip event is cleared or reset every PWM cycle.
就是每个TZn引脚可以配置成提供cycle-by-cycle 和 one-shot trip event
问题如下：
1.从提供的资料a和b中，a cycle-by-cycle or one-shot trip event各自产生的条件是什么？除了配置TZSEL[CBCn] and TZSEL[OSHTn]之外，还有TZn引脚输入有什么区别才会产生不同的故障事件？
我是这样想的：one-shot trip event 就是TZn引脚有一个低电平脉冲就产生一个one-shot trip event（符合产生条件）；而Tzn引脚必须一连串周期低电平有效脉冲才会产生？
2.从提供的资料c中，我们可以知道：如果a cycle-by-cycle trip event不存在，这个不存在的条件是什么？
当TBCTR = 0x0000时，The specified condition on the pins is automatically cleared.我对这个引脚上“specified condition”不明白，指的是哪个引脚？是TZn引脚吗？是指引脚的什么特定条件？对这个自动清除也不明白，自动清除什么？是清零吗？还是清除引脚产生周期事故的条件？
在这个模式下，the trip event is cleared or reset every PWM cycle .周期事故事件在每个PWM周期下是怎样被清除或者置位的？
不知道下面这段话是什么意思。求老师们解答。谢谢
The specified condition on the pins is automatically cleared when the ePWM time-base counter reaches zero (TBCTR = 0x0000) if the trip condition is no longer present. The condition on the pins is only cleared when the TBCTR = 0x0000 no matter where in the cycle the CBC flag is cleared.
alisa song：
回复 Forrest:
请问跑epwm_trip_zone例程需要怎样设置Gpio 和初始化？我建立了一个工程把例程载入以后调试不能成功，请高手指点，谢谢。
