1. C语言项目开发优秀格式学习

#define BUILD_MASK32(mask, offset, width) mask|=((0xffffffff)>>(32-width)) << offset
#define BUILD_VAL32(newval,offset,val) newval |= (val << offset)
#define GET_FILED_IN_VAL32(filed,offset,width,val) filed=(val<<(32-(offset+width))) >> (32-width)

#define BUILD_MASK8(mask, offset, width) mask|=((0xff)>>(8-width)) << offset
#define BUILD_VAL8(newval,offset,val) newval |= (val << offset)
#define GET_FILED_IN_VAL8(filed,offset,width,val) filed=(val<<(8-(offset+width))) >> (8-width)

regRead32(uint8 id, uint16 addr, uint32 *pVal);
regWrite32(uint8 id, uint16addr, uint32 mask, uint32 val);regWrite32(uint8 id, uint16addr, uint32 mask, uint32 val)
{uint32 tmpVal;uint32 wVal = val;regRead32(id, addr, &tmpVal);tmpVal &= ~mask;wVal &= mask;tmpVal |= wVal;}

C 语言开发中可以经常给你对函数的入参做检查：

ASSERT(expr)

#define ASSERT(expr) \if(!(expr))    \{              \log("%s:%d, assert(%s)", __FUNCTION__, __LINE__, #expr); \return; \}#define ASSERT_VOID(expr)if(!(expr))    \{              \log("%s:%d, assert(%s)", __FUNCTION__, __LINE__, #expr); \}#define ASSERT_RETURN_FAIL(expr)if(!(expr))    \{              \log("%s:%d, assert(%s)", __FUNCTION__, __LINE__, #expr); \return -1; \}#define ASSERT_RETURN_WARNING(expr)if(!(expr))    \{              \log("%s:%d, assert(%s)", __FUNCTION__, __LINE__, #expr); \return -1; \}#define ASSERTRtn(expr, result)if(!(expr))    \{              \log("%s:%d, assert(%s), result=%d", __FUNCTION__, __LINE__, #expr, result); \return result; \}