How can i control the duty cycle for pwm using touch slider ? Anonymous Not applicable Jul 06, 2014 11:14 PM Mark as New Bookmark Subscribe Mute Subscribe to RSS Feed Permalink Print Report Inappropriate Content Jul 06, 2014 11:14 PM I want to control 4 computer fans using touch slider How can i connect the pwm to touch slider ? 0 Likes Reply Subscribe All forum topics Previous Topic Next Topic 3 Replies Re: How can i control the duty cycle for pwm using touch slider ? Level 10 Bob_Marlowe Level 10 Jul 07, 2014 01:48 AM Mark as New Bookmark Subscribe Mute Subscribe to RSS Feed Permalink Print Report Inappropriate Content Jul 07, 2014 01:48 AM Duty cycle of a pwm is controlled by the compare value. Duty cycle = (Period + 1)/(Compare + 1) * 100% So you just read the slider position and set the compare value accordingly. Bob 0 Likes Reply Re: How can i control the duty cycle for pwm using touch slider ? Level 9 ETRO_SSN583 Level 9 Jul 07, 2014 05:37 AM Mark as New Bookmark Subscribe Mute Subscribe to RSS Feed Permalink Print Report Inappropriate Content Jul 07, 2014 05:37 AM Using A/D, that tells you slider position, essentially. Then using a loop, or DMA, you feed that value to compare register of PWM. When PWM finishes its current cycle it will update the comparison used to new value. In case of PWM immeadiate update occurs. Regards, Dana. 0 Likes Reply Re: How can i control the duty cycle for pwm using touch slider ? Level 8 HeLi_263931 Level 8 Jul 07, 2014 10:28 AM Mark as New Bookmark Subscribe Mute Subscribe to RSS Feed Permalink Print Report Inappropriate Content Jul 07, 2014 10:28 AM @dana: no need to use the ADC for the touch slider, there is a nice API for that 🙂 0 Likes Reply Post Reply
