Swap PWM period

[ArOg_285336]

I'm trying to do the layout in which the LED will glow with 2 different frequencies.
I am using  function PWM_SetPeriodSwap () but it has no effect.

How to turn PWM perio and period_buf?

[ETRO_SSN583]

You have to check off the swap capability and enter the swap values.

                   

Note you can do the switch in HW by enabling the switch input and feeding

   

it with a switch signal.

       

Regards, Dana

[ArOg_285336]

I want to use the API and by  software modify the parameters.

       

    CyGlobalIntEnable;  /* Uncomment this line to enable global interrupts. */
    for(;;)
    {

        if(counter ==5)
        {
            PWM_SetPeriodSwap(1u);
            PWM_SetCompareSwap(1u);
        }
        
      
    }

   

Why is this simple code does not work?

[ETRO_SSN583]

Two questions -

       

1) Did you check the properties to allow the swap capability ?

       

2) Can you set a breakpoint and hit it on the swap instruction ?

   

Eg. are you getting into the if statement test on counter ?

       

3) Where do you reset counter variable after doing swap, otherwise

   

you will keep repeating the swap commands ?

       

You also have to have the compare checked.

                       

Regards, Dana.