Can nrf518822 generate 3.3M Hz wave?

RE: Can nrf518822 generate 3.3M Hz wave?

leo.ni — Fri, 16 Sep 2016 00:55:32 GMT

Thanks again,Aryan!

RE: Can nrf518822 generate 3.3M Hz wave?

Susheel Nuguru — Thu, 15 Sep 2016 13:09:25 GMT

no you cannot. You need the divisor to be 4.84 for timer to accurately get 3.3MHz with prescaler 0. nRF chip does not support floating divisors. And even if you want to count the number of interrupt and toggle pin you still will get frequency which is the power of 2 divisor to 16MHz

RE: Can nrf518822 generate 3.3M Hz wave?

leo.ni — Thu, 15 Sep 2016 12:49:01 GMT

Thanks Aryan! if i use Timer modules to generates 4M frequency and count a number in timer interrupt , if the count reached a special number, i toggle pin in interrupt function.Can i get 3.3Mhz wave? Thanks again!

RE: Can nrf518822 generate 3.3M Hz wave?

Susheel Nuguru — Mon, 05 Sep 2016 08:39:19 GMT

You can generate 4MHz but not 3.3MHz, the divisor in the TIMER modules generates only frequencies which are divisors of HFCLK frequency.

One post to see how 8MHz can be generated is here