sleep ?

Rayman · 2013-03-29 09:06

Is there a regular sleep function that works?

Tried sleep(), but it wasn't recognized.
Tried including unistd.h, but that gives errors...

Noticed in one demo that Steve made his own msleep and usleep functions...
Is that what we need to do?

ersmith · 2013-03-29 09:45

There's a sleep() function in the library, and usleep() too. Prototypes for both should be present in <unistd.h>. What errors did you get?

Eric

Rayman · 2013-03-29 10:36

1> c:\propgcc\bin\../lib/gcc/propeller-elf/4.6.1/../../../../propeller-elf/include/cog.h:96:21: error: previous declaration of 'unsigned int _clkfreq' with 'C++' linkage

1> c:\propgcc\bin\../lib/gcc/propeller-elf/4.6.1/../../../../propeller-elf/include/time.h:9:16: error: conflicts with new declaration with 'C' linkage

SRLM · 2013-03-29 10:39

Try the extern "C" command around the plain C stuff.

#ifdef __cplusplus
extern "C" {
// Plain C stuff
}
#endif

Edit: although I haven't needed to use it in several months of intense PropGCC work. Can you post your code?

ersmith · 2013-03-29 10:58

Rayman wrote: »

1> c:\propgcc\bin\../lib/gcc/propeller-elf/4.6.1/../../../../propeller-elf/include/cog.h:96:21: error: previous declaration of 'unsigned int _clkfreq' with 'C++' linkage

1> c:\propgcc\bin\../lib/gcc/propeller-elf/4.6.1/../../../../propeller-elf/include/time.h:9:16: error: conflicts with new declaration with 'C' linkage

It sounds like propeller.h is missing an extern "C" declaration. As SRLM noted, you can wrap the whole thing up as follows in your program:

#ifdef __cplusplus
extern "C" {
#endif
#include <propeller.h>
#ifdef __cplusplus
}
#endif

while you're waiting for the header file to be fixed.

Eric

Rayman · 2013-03-29 11:05

I think I have an easier fix...

Just moved propeller.h after unistd.h and it seems happy now...

jazzed · 2013-03-29 11:58

Rayman wrote: »

I think I have an easier fix...

Just moved propeller.h after unistd.h and it seems happy now...

Eventually the real fix will be added, we don't want some order dependencies. It's fine for a temporary work-around.

BTW, usleep and friends will give at least the amount of time you would like and is appropriate for threading. Use waitcnt for deterministic delays (though it is not appropriate to use during threading).

sleep ?

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