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When I make a timer, 1 ms error happens per every 1 s. How can I revise it?

KKIM.6
Senior II

When I make a timer,

1 ms error happens per every 1 s.

How can I revise it? 

I'm using Necleo-wb55 and "TIM16"

The Prescaler is 31999 / 32000 (both are tested).

12 REPLIES 12

I agree but I want to see the detailed speed of my script instantly using USART communication

+1 ms. It looks +200us ~ 300 us now.

my situation is more serious than physical tolerance. I think some parts cause problems but I cannot find the reason because STM32 is very complex.