About the function of osalThreadDelayMicroseconds.

Hello all,

When I call this function osalThreadDelayMicroseconds(1u), I found that 1us is not implemented, and the actual result is 1ms.

But if you call osalThreadDelayMicroseconds (9000u) it can reach 9ms.

The parameter usec is less than 1000 and is 1ms.

May I ask why I can't achieve 1us?

I used 1000 for system timer tick number：

This topic has been closed for replies.

Best answer by Erwan YVIN

Hello Zeke ,

Could you confirm your device used ?

As the recommandation, the number of ticks is limited by the system Timer (PIT0) frequency

Do not hesitate to go to the RM in order to check the PIT Limitation.

Best regards

Erwan

Erwan YVINBest answer

ST Employee

Hello Zeke ,

Could you confirm your device used ?

As the recommandation, the number of ticks is limited by the system Timer (PIT0) frequency

Do not hesitate to go to the RM in order to check the PIT Limitation.

Best regards

Erwan

Associate II

Hi Erwn,

Thank you for you reply.

I have confirmed the device used.

I think the system is running at a millisecond level, and it doesn't work through the osalThreadDelayMicroseconds function.

Do you have any better suggestions? Or can you implement subtle delays in assembly language?

Best regards

Zeke

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