How to generate 25mhz pulse signal from nucleo-64l476rg

[Vkris.1]

..

[Tesla DeLorean]

Perhaps by running at 75 MHz and dividing that by three, using TIM or MCO​

[Vkris.1]

in have to generate this 25Mhz from GPIO of it

i was using this formula to calculate the timing parameters:

(PSC+1)*(ARR+1) = TIMclk/requirefrequency

is it correct

[S.Ma]

Get a fast timer without prescaler and either 100 or 75 mhz timer, use output compare pin to generate your pulse(s).

[Vkris.1]

first i was trying to generate 1mhz from 80mhz

max i was getting only 110 khz

i was using nucleo-64 l476rg timer 1

when i use prescaler as 0 and pulse as 40 i was getting 613.5 hz

when i use prescaler as 0 and pulse as 400 i was getting 100.613 khz

if there is any sample code available that would be great help

[Tesla DeLorean]

HAL/CubeL4 should be full of examples.

​

Y​out can't interrupt at these rates, the TIM should be related to the GPIO used, and should Toggle or PWM the pin directly, not via software

[Manny]

How are you using your timer, PWM mode or using it to generate an interrupt that toggle the pin? Can you show the code you are using?