RE: Regarding PWM

ovrebekk — Mon, 11 Mar 2019 14:02:21 GMT

The PWM hardware modules are not very convenient if you want to change the frequency dynamically. They are setup to load duty cycle changes directly from RAM, but will need to be re-initialized every time you want to change the frequency.

For that reason you might consider the timer approach instead. Set up the GPIOTE module to set and clear your pin, and connect a TIMER module to the GPIOTE output through the PPI.

One compare register in the TIMER can set the pin while another compare register clears the pin, and then you just change the values of these registers to change the duty cycle and frequency of the output.

For an example of how to set this up you can refer to this example.

Best regards
Torbjørn

RE: Regarding PWM

Alan Ajit — Sat, 09 Mar 2019 06:02:32 GMT

iam using nrf52832. i am confusing in two method both are using to make pwm . what is the main difference between both this method

RE: Regarding PWM

Sunil vignesh — Fri, 08 Mar 2019 15:08:01 GMT

HI,

Refer this link PWM

Which board are you using and SDK?