鄙人觉得Nios II HAL自带的数据类型宏真的不好用，而且还有个alt_前缀，移植很麻烦。

代码1 alt_types.h

#ifndef __ALT_TYPES_H__ #define __ALT_TYPES_H__ /****************************************************************************** * * * License Agreement * * * * Copyright (c) 2003 Altera Corporation, San Jose, California, USA. * * All rights reserved. * * * ******************************************************************************/ /* * Don't declare these typedefs if this file is included by assembly source. */ #ifndef ALT_ASM_SRC typedef signed char alt_8; typedef unsigned char alt_u8; typedef signed short alt_16; typedef unsigned short alt_u16; typedef signed long alt_32; typedef unsigned long alt_u32; typedef long long alt_64; typedef unsigned long long alt_u64; #endif #define ALT_INLINE __inline__ #define ALT_ALWAYS_INLINE __attribute__ ((always_inline)) #define ALT_WEAK __attribute__((weak)) #endif /* __ALT_TYPES_H__ */

我习惯于使用STM32的数据类型宏，因为都是32位的RISC处理器，所以都是通用的，推荐大家也使用。哈哈，看起来都比较清爽。

代码2 my_types.h

// copy from stm32f10x_type.h #ifndef MY_TYPES_H_ #define MY_TYPES_H_ typedef signed long s32; typedef signed short s16; typedef signed char s8; typedef signed long const sc32; /* Read Only */ typedef signed short const sc16; /* Read Only */ typedef signed char const sc8; /* Read Only */ typedef volatile signed long vs32; typedef volatile signed short vs16; typedef volatile signed char vs8; typedef volatile signed long const vsc32; /* Read Only */ typedef volatile signed short const vsc16; /* Read Only */ typedef volatile signed char const vsc8; /* Read Only */ typedef unsigned long u32; typedef unsigned short u16; typedef unsigned char u8; typedef unsigned long const uc32; /* Read Only */ typedef unsigned short const uc16; /* Read Only */ typedef unsigned char const uc8; /* Read Only */ typedef volatile unsigned long vu32; typedef volatile unsigned short vu16; typedef volatile unsigned char vu8; typedef volatile unsigned long const vuc32; /* Read Only */ typedef volatile unsigned short const vuc16; /* Read Only */ typedef volatile unsigned char const vuc8; /* Read Only */ typedef enum {FALSE = 0, TRUE = !FALSE} bool; #endif /* MY_TYPES_H_ */

下面给个my_types.h的使用范例。

代码3 PIO寄存器结构体

#include "my_types.h" // PIO Data structure typedef struct { vu32 DATA : 32; vu32 DIRECTION : 32; vu32 INTERRUPT_MASK : 32; vu32 EDGE_CAPTURE : 32; }PIO_T;