Avoid one special routine optimization

[fanziyu]

S32K144

S32 Design for Arm 2.2

Optimization Level (-O1)

After the Hall signal A is detected by the input capture function, it waits for about 6us before going to collect Hall signal B. I used a FOR loop to produce this 6us, so how do I prevent the compiler from optimizing away this FOR loop?

for(i=0; i<65535;i++）

{...}

[davidtosenovjan · Accepted solution]

Yes, I have found it in certain presentation used following way:

davidtosenovjan_0-1704446616111.png

[fanziyu]

fanziyu_0-1704420071476.png

This method works well in S32K144 S32DS, is it theoretically applicable?