delay.h

来自「简单的在ATMEGA64上移植ucosII」· C头文件 代码 · 共 26 行

#ifdef    _DELAY_C_
	#define    _DELAY_GLOBAL_
#else
	#define    _DELAY_GLOBAL_	extern
#endif

#define ATmega64

// 执行11条指令的时间是0.994us，单条指令的时间是0.0904us
#ifdef ATmega64			
	#define XTAL 11059
	#define DelayUs() asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");
#endif

// 执行8条指令的时间是1us，单条指令的时间是0.125us
#ifdef ATmega8			
	#define XTAL 8000
	#define DelayUs() asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");asm("nop");
#endif

_DELAY_GLOBAL_    void Delay5us(void);
_DELAY_GLOBAL_    void Delay10us(void);
_DELAY_GLOBAL_    void DelayMs(void);
_DELAY_GLOBAL_    void DelayNms(unsigned int n); 
_DELAY_GLOBAL_    void DelayNs(unsigned char n);