Sam Grove
/
canopen_slavenode
CANfestival - an open source CANopen framework
Diff: framework/include/sysdep.h
- Revision:
- 0:6219434a0cb5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/framework/include/sysdep.h Mon May 30 07:14:41 2011 +0000 @@ -0,0 +1,27 @@ +#ifndef __sysdep_h__ +#define __sysdep_h__ + +#include "config.h" + +#ifdef CANOPEN_BIG_ENDIAN + +/* Warning: the argument must not update pointers, e.g. *p++ */ + +#define UNS16_LE(v) ((((UNS16)(v) & 0xff00) >> 8) | \ + (((UNS16)(v) & 0x00ff) << 8)) + +#define UNS32_LE(v) ((((UNS32)(v) & 0xff000000) >> 24) | \ + (((UNS32)(v) & 0x00ff0000) >> 8) | \ + (((UNS32)(v) & 0x0000ff00) << 8) | \ + (((UNS32)(v) & 0x000000ff) << 24)) + +#else + +#define UNS16_LE(v) (v) + +#define UNS32_LE(v) (v) + +#endif + +#endif /* __sysdep_h__ */ +