led_turnon.c

EasyStudy51-II单片机开发系统的库函数源代码.包含了EasyStudy51-II硬件的全部驱动.

#include "AT89X52.h"
#include "ES51_II.h"
#include "ES51_II_LIB.h"

//	根据索引值index点亮LED,不改变其他LED状态
//	index:	范围1~8
void TurnOnLED(unsigned char index)
{
	unsigned char temp=0x01;
	if( (index < 9) && (index >0) )				//	判断索引值是否在合法范围内
		LEDPORT &= ~(temp<<(index-1));	
}