STM32F427ZGT6 inaccurate delay

[liwei11]

Hello, when I was using this chip, STM32F427ZGT6, it could print data, but the delay was incorrect. After 5 seconds, it was only a few milliseconds. Due to the inaccurate delay, the timing sequence became disordered

[mƎALLEm]

Hello @liwei11 ,

Your question is not clear. Could you please elaborate more and which interface you are talking about?

Please review How to write your question to maximize your chances to find a solution

 

[TDK]

Maybe your delay code is inaccurate.