PWM23(Output polarity Inverted) channel masked，PWM23 output 1.Can PWM23 output 0？

[547351265]

PWM23(Output polarity Inverted) channel masked，PWM23 output 1.

Can PWM23 output 0 ( PWM23 Output polarity Inverted & channel masked )?

And what should I do ?

Thanks.

[xiangjun_rong · Accepted solution]

Hi,

Pls refer to the above figure, in default, the POLA bit is cleared, in the case, if you set the MASK bit, PWM_A output signal will be logic 0.

If the POLA is set, in the case, if you set the MASK bit, PWM_A output signal will be logic 1.

The only way I think is that you clear the IPOL bit before you set mask bit so that the PWM_A output signal will be logic 0 after masking.

Hope it can help you

BR

XiangJun Rong

[547351265]

Thanks 

[547351265]

Thanks for your advice .

when set  PWM1A  Output polarity Inverted:

PWMA->SM1OCTRL |=0X0400; // PWM1A  Output polarity Inverted

We write the MASK register to mask the PWM signals .

The PWM1A output always high ( 1 logic ).

[TomasVaverka]

Hi Zhang,

Could you please specify which part number is your question related to?

Best regards,

Tomas

[547351265]

MC56F83763

Thanks for your reminder .

[xiangjun_rong]

Hi, Zhang,

Of course, you can write the MASK register to mask the PWM signals. If you want to update the PWM signals immediately after you write, pls set the corresponding UPDATE_MASK bit, then write the corresponding MASKA, MASKB or MASKX, the corresponding PWMA_xA, PWMA_xB, PWMA_xX will update immediately.

Hope it can help you

BR

XiangJun Rong