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您好,
eHRPWM 周期是根据计数器模式定义的。对于向上计数和向下计数,周期为 Tpwm =(TBPRD + 1)* Ttbclk。而在递增和递减计数模式下,周期为 Tpwm = 2 * TBPRD * Ttbclk。其中 Ttbclk 是系统时钟(125MHz)除以 EPWM_TBCTL 寄存器中设置的预分频器。
Figure EPWM Time-Base Submodule Signals and Registers 应该可以让用户更好地了解如何定义它。有关占空比的更多信息,也可以在相应的Enhanced Pulse Width Modulation (EPWM) 一章中找到。
详情请见英文论坛工程师的答复。