【C】数据类型定义

#include <stdint.h>

/* Unsigned. */
typedef unsigned char       uint8_t;
typedef unsigned short int uint16_t;
#ifndef __uint32_t_defined
typedef unsigned int        uint32_t;
# define __uint32_t_defined
#endif
#if __WORDSIZE == 64
typedef unsigned long int   uint64_t;

#include "stm32f10x.h"

typedef uint32_t  u32;
typedef uint16_t u16;
typedef uint8_t  u8;

　　

按照posix标准，一般整型对应的*_t类型为：

1字节 uint8_t

2字节 uint16_t

4字节 uint32_t

8字节 uint64_t