Problem in PWM: PWM_OUTPUT_MASK

[oattao]

Hi all,
I'm using PWM in STM32. I read in pwm.h file:

Code: Select all

/**
 * @brief   Standard output modes mask.
 */
#define PWM_OUTPUT_MASK                         0x0F

I don't understand the "output modes mask" of PWM. Please explain to me.
Thanks in advance.

[Giovanni]

Hi,

It is not an actual mode, it is the mask of the bits reserved for the output mode in that word (4 bits), an AND operation with that constant allows to isolate the actual mode.

Giovanni