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using inline assembly on Cortex-M3 using RVCT 4.0

Note: This was originally posted on 20th August 2010 at http://forums.arm.com

Hey all,

While migrating from arm-gcc to armcc, I am facing the following problem - There is an inline code which is giving error.

"abc.c", line 162: Error: #1113: Inline assembler not permitted when generating Thumb code
__asm__ __volatile__("wfi");
^

What should be done to get the code running.

I am using Cortex M3 processor and RVDS 4.0.

Thanks and Regards
Abhinav Varma

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Simon Craske over 12 years ago

Note: This was originally posted on 20th August 2010 at http://forums.arm.com

For "WFI" you don't need to use assembly. RVCT supports WFI via a built-in intrinsic called "__wfi()".
Just use "__wfi()" as if it were a function, e.g.

[font="Courier New"] while(....) __wfi();[/font]

hth
s.
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Simon Craske over 12 years ago

Note: This was originally posted on 20th August 2010 at http://forums.arm.com

For "WFI" you don't need to use assembly. RVCT supports WFI via a built-in intrinsic called "__wfi()".
Just use "__wfi()" as if it were a function, e.g.

[font="Courier New"] while(....) __wfi();[/font]

hth
s.
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Vote up 0 Vote down

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