TMS320F28379D: Resetting CMPA when the HRPWM is configured for duty-cycle control in up-down mode

Hello everyone,

I use an ePWM with CMPA in shadow mode, but sometimes I need to reset it to its default value. In order to avoid waiting until the shadow register is loaded into the active register, I found a method where I do something like this:

ePwm->CMPA.half.CMPA = 0; // write to shadow register (CMPA becomes zero)
ePwm->CMPCTL.bit.SHDWAMODE = TB_IMMEDIATE; 
ePwm->CMPA.half.CMPA = 0; // direct write to active register (CMPAM becomes 0) 
ePwm->CMPCTL.bit.SHDWAMODE = TB_SHADOW;

This does what I want, but I wonder if it may interfere with the HRPWM. The TRM states in chapter 15.2.4.4.1 that "the TBPRD and CC registers must be configured for shadow loads". If I run the ePWM in high-resolution up-down duty cycle control, then force the CMPA to zero in the manner described above, will it break the configuration of the HRPWM because I put the CMPA in immediate mode for a short while?

Cheers,

Pierre