Compiler problem in Keil 5.24.2.0

RE: Compiler problem in Keil 5.24.2.0

ovrebekk — Tue, 02 Apr 2019 07:22:36 GMT

Hi Chianglin

You should be able to turn of code optimization in the compiler settings. By default it is set to level 3, which does a lot of optimizations, but you can turn it off completely.

Can you try to change this and see if it solves the problem?

Best regards
Torbjørn

RE: Compiler problem in Keil 5.24.2.0

chianglin — Mon, 01 Apr 2019 14:54:29 GMT

Hi Torbjørn,

Thank you for your explain.

It looks the compiler is very smart, so it will ignore some which may not be execute.

Can I disable this compile option, so all of my source can compile to binary?

Thank you,

Chianglin

RE: Compiler problem in Keil 5.24.2.0

ovrebekk — Mon, 01 Apr 2019 11:13:22 GMT

Hi Ives

It seems the compiler expects the MotorDirection variable never to be set to -1.

Could it be that it is defined as unsigned, or that you never set it to -1?

Possibly it should be declared as volatile, if you write to it from an interrupt handler.

Best regards
Torbjørn