delay.c

来自「基于2812的触摸屏的程序,能够显示基本图形.」· C语言 代码 · 共 63 行

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

void delay_n(unsigned int n)
{
	unsigned int i;
	for(i = 0; i < n; i++)
		asm ( " nop " );
}

//when run in ram--------------
//void delay_100us_ram(void)
void delay_100us(void)		// 5KHz
{
	unsigned int i;
	for(i = 0; i < 55; i++)
	{
		asm(" RPT	 #200 || NOP ");
		asm(" RPT	 #55 || NOP ");
	}
}

void delay_10us(void)		// 50KHz
{
	unsigned int i;
	for(i = 0; i < 10; i++)	
		asm(" RPT	 #103 || NOP ");
}

void delay_1us(void)		// 0.5MHz
{
	asm(" RPT	 #103 || NOP ");		
}
//-----------------------------

//when run in flash------------
void delay_100us_flash(void)
//void delay_100us(void)
{
	unsigned int i;
	for(i = 0; i < 50; i++)
	{
	asm(" RPT	 #200 || NOP ");
	asm(" RPT	 #55 || NOP ");
	}
}
//------------------------------

void delay_ms(void)
{
	unsigned int i;
	for(i = 0; i < 10; i++)	
		delay_100us();
}

void DelayMs(unsigned int n)
{
	unsigned int i;
	for(i = 0; i < n; i++)
		delay_ms();
}