| T O P I C R E V I E W |
| William Brown |
Posted - Jan 09 2014 : 5:42:02 PM
I use a rather strange method for defining globals in my embedded C code.
#define _SPI_DRV_GLOBALS is put at the top of the C file associated with these this header.
#ifdef _SPI_DRV_GLOBALS // Locally defined init vals possible
#define H_EXTERN_VARIABLE volatile
#define H_V_I(x) x
#else // defined as extern in other files
#define H_EXTERN_VARIABLE extern volatile
#define H_V_I(x)
#endif // end #ifdef _SPI_DRV_GLOBALS
H_EXTERN_VARIABLE U8 g_nLEDduration H_V_I( = 250 );
#undef H_EXTERN_VARIABLE
so the variable g_nLEDduration is global, and if any other C file includes this header it shows up defined as extern.
The issue i found is that the line:
H_EXTERN_VARIABLE U8 g_nLEDduration H_V_I( = 250 );
causes the VA X not to see the reference.
if I put a space in before the ; it works though
so:
H_EXTERN_VARIABLE U8 g_nLEDduration H_V_I( = 250 ) ;
is referenced just fine.
Bill
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| 1 L A T E S T R E P L I E S (Newest First) |
| feline |
Posted - Jan 11 2014 : 9:36:00 PM
I am seeing the same effect here. Thank you for the clear description:
case=79527
This is quite unexpected, I would not have expected a space before the semi-colon to have such an effect. At least the solution is simple, which is good news. |
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