Hello, I'm using hal_delay in my code. The part where I used hal_delay to take a waveform using an oscilloscope is a little strange. Can Hal_delay cause waveform problems?

[dkim.3]

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[Foued_KH]

Hello @dkim.3​ 

I think you have the same issue as reported here : HAL_Delay() is not working properly!!! (st.com)

Foued

[dkim.3]

It seems to me that it is about time. But my problem is with waveforms. When you meet delay after always being high in the waveform, the high value drops for a while and then transmits the bit you want to transmit. Since there is only a delay function in the meantime, I am guessing that there is something disturbing the waveform in the delay function, and I wonder if this is right. If it is a factor that cannot be disturbed, I will further study it.