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Revision 1973, 457 bytes
(checked in by mwhitworth, 3 years ago)
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Add word swap functions. (USB stack to be committed soon).
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| 1 | #ifndef BYTESWAP_H |
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| 2 | #define BYTESWAP_H |
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| 3 | |
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| 4 | #include <typedefs.h> |
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| 5 | |
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| 6 | static inline DWORD BeToCpu32(DWORD x) |
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| 7 | { |
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| 8 | unsigned char* p=(unsigned char*)&x; |
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| 9 | |
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| 10 | return ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]); |
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| 11 | } |
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| 12 | |
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| 13 | static inline DWORD CpuToBe32(DWORD x) |
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| 14 | { |
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| 15 | return BeToCpu32(x); |
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| 16 | } |
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| 17 | |
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| 18 | static inline WORD BeToCpu16(WORD x) |
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| 19 | { |
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| 20 | unsigned char* p = (unsigned char*)&x; |
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| 21 | |
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| 22 | return ((p[0] << 16) | p[1]); |
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| 23 | } |
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| 24 | |
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| 25 | static inline WORD CpuToBe16(WORD x) |
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| 26 | { |
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| 27 | return BeToCpu16(x); |
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| 28 | } |
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| 29 | |
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| 30 | #endif |
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