period and compare buff register

[yangyong]

TCPWM have Period register and Period  buff  register .  How to determine which register is used now，Period register or Period buff register！ thanks！

[Rakesh_Patrudu · Accepted solution]

Hi @yangyong ,

TCPWM have period register and period buffer register. Period register has the upper value of counter and Period buffer register is a buffer register which swaps the period value. In PWM mode the PERIOD and PERIOD_BUFF registers are exchanged on a tc event. The period swap is shown in the below snippet. There will be two periods, Period 0 and Period 1 when the period swap is enabled then period register and period buffer register will get swapped.

In case you are using timer functionality use Period register instead of Period buffer register as it utilizes Period register not the Period buffer register.

Best Regards

Rakesh