hardware.h

来自「英培特ARM教学平台EDUKIT-III」· C头文件 代码 · 共 32 行

#ifndef HARDWARE_H_
#define HARDWARE_H_

#define CTL_REG_READ(addr)		(*(volatile unsigned long *)(addr))
#define CTL_REG_WRITE(addr, val)	(*(volatile unsigned long *)(addr)=(var))

#define CTL_REG_READ_BYTE(addr)		(*(volatile unsigned char *)(addr))
#define CTL_REG_WRITE_BYTE(addr, var)	(*(volatile unsigned char *)(addr)=(var))

/*
 * __ASSEMBLY__ is defined by command line option of assembler.
 * You can find it from Makefile in top directory.
 */

#ifndef __ASSEMBLY__

#define __REG(x)	(*(volatile unsigned long *)(x))
#define __REGl(x)	__REG(x)
#define __REGw(x)	(*(volatile unsigned short *)(x))
#define __REGb(x)	(*(volatile unsigned char *)(x))

#else

#define __REG(x)	(x)
#define __REGl(x)	(x)
#define __REGw(x)	(x)
#define __REGb(x)	(x)

#endif  /* __ASSEMBLY */

#endif 	/* HARDWARE_H_	*/