设置了PWM1A,PWM1B互补+使能死区功能。
如何实现EPwm1Regs.CMPA.half.CMPA = 0时，上管全开，下管全关
配置如下:
EPwm1Regs.AQCTLA.bit.CAU = 0x2; // set PWMxA on up = CMPA
EPwm1Regs.AQCTLA.bit.CAD = 0x1; // clear PWMxA on down = CMPA
EPwm1Regs.AQCTLA.bit.PRD = 0x2; // CNT = set on PRD---边界动作设置
EPwm1Regs.AQCTLA.bit.ZRO = 0x1; // CNT = clear on Zero---边界动作设置
EPwm1Regs.DBCTL.bit.IN_MODE = 0x0; // IN_mode selection
EPwm1Regs.DBCTL.bit.POLSEL = 0x2; // Active high complementary
EPwm1Regs.DBRED = DeadBand_1us; //dead timered:
EPwm1Regs.DBFED = DeadBand_1us; //dead timefed
EPwm1Regs.DBCTL.bit.OUT_MODE = 0x3; // Deadband fully enabled
想要达到效果如最下面TI TRM文档里面的，EPwm1Regs.CMPA.half.CMPA = 0时，上管全开，下管全关
但是由于死区存在，上管时钟输出是一个叠加了死区的高频信号，
有什么办法可以设置全开吗，要设置ACTSFA寄存器 的FORCE HIGH？
