delay.c

来自「WAV 数字输出播放器」· C语言 代码 · 共 31 行

#include <p33FJ64GP306.h>

unsigned int temp_count;

void Delay8Tcy(void)	// short delay for LCD E signal, etc
{
	Nop();
	Nop();
	Nop();
	Nop();
	Nop();
	Nop();
	Nop();
	Nop();
	return;
}

// long delay. Delay_Us(1) = about 100us
void Delay_Us( unsigned int delayUs_count )
{
	temp_count = delayUs_count +1;
	asm volatile("outer1: dec _temp_count");	
	asm volatile("cp0 _temp_count");
	asm volatile("bra z, done1");
	asm volatile("do #1500, inner1" );	
	asm volatile("nop");
	asm volatile("inner1: nop");
	asm volatile("bra outer1");
	asm volatile("done1:");
}