Interrupt on PWM

bricesup — Tue, 30 May 2017 15:28:42 GMT

Hello,

I want to make an interrupt on my PWM signal i use this function :

vAHI_TimerEnable(E_AHI_TIMER_1,1,FALSE,TRUE,TRUE);

and my PWM is this :

vAHI_TimerStartRepeat(E_AHI_TIMER_1,PWM1,20000);

With a button I modify the variable PWM but for have a perfect signal I want to modify the PWM signal with the new time of low signal(0 Volt) when the actual signal is at 0 Volt. For that i detect the falling and I use this command :

vAHI_Timer1RegisterCallback(Timer1);

PRIVATE void Timer1(uint32 u32DeviceId, uint32 u32ItemBitmap)
{
vAHI_TimerStartRepeat(E_AHI_TIMER_1,PWM1,20000); //Repeat the PWM with a new PWM1 value

}

I think it's possible but nothing happen when I make that.

Thanks for your answers.

Re: Interrupt on PWM

mario_castaneda — Tue, 13 Jun 2017 17:29:23 GMT

Hi,

Did you configure the timer 1 and the output pin? Could you please check the output voltage?

You can take as a reference the next code. The JN-AN-11989 provides this example as a Dimmable Light

vAHI_TimerEnable(E_AHI_TIMER_0, 0, FALSE, FALSE, TRUE);
vAHI_TimerConfigureOutputs(E_AHI_TIMER_0, TRUE, TRUE); /* Invert PWM and disable gating */
vAHI_TimerClockSelect(E_AHI_TIMER_0, FALSE, TRUE);

Please let me know your findings.

Best Regards,

Mario

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