topic Re: LPC43S57 : Do not Wake up in Release mode ? in LPC Microcontrollers

LPC43S57 : Do not Wake up in Release mode ?

julienbrissard — Fri, 26 Oct 2018 15:37:39 GMT

Hi,

LPC43S57 enters in deep sleep mode, but when I toggle the wakeup0 pin, the software do not wake up ! (I have checked the HW signal and it move correctly from 0 to 1, or even from 1 to 0 but without effect)

Something strange is that the wake up occurs correctly if I load the "debug" version of my software (same code, but with configuration "debug" in MCUXpresso)

I also test a really similar software on the MCB4300 evaluation board (LPC4357 instead of LPC43S57), and the wake up occurs correctly in both "debug" and "release" configuration.

Do anyone have a clue about my problem ?

Julien

Re: LPC43S57 : Do not Wake up in Release mode ?

kerryzhou — Mon, 29 Oct 2018 06:32:33 GMT

Hi Julien brissard,

Please try to select the optimization level to None in the release mode, then build the project, and try it again:

If you still have question about it, please kindly let me know.

Have a great day,
Kerry

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Re: LPC43S57 : Do not Wake up in Release mode ?

lpcxpresso_supp — Mon, 29 Oct 2018 11:06:50 GMT

In many cases, when issues are seen where code works built for Debug but not Release, the issue is a missing "volatile".

I suggest that you take a look at the following FAQ for more details : Compiler Optimization

Regards,

MCUXpresso IDE Support