#include <REGX52.H>
void Timer0Init(void);
void Delay(unsigned int xms);
void mode0();
void mode1();
void display( mode);
sbit mybit = P1^5;
sbit KEY_MODE = P2^1;
sbit KEY_UP = P2^4;
unsigned char mode=0;
unsigned char key_value;
unsigned char key_scan()
{
P2=0xff; //1111 1111
key_value=0;
if(KEY_MODE == 0){
Delay(20);
while(!KEY_MODE);
Delay(20);
key_value=1;
}
/* else if(KEY_UP == 0)
{
Delay(20);
while(!KEY_UP);
Delay(20);
key_value=2;
}
*/
return key_value;
}
void main(void)
{
while (1)
{
key_value=key_scan();
switch(key_value)
{
case 0:
display(mode);
break;
case 1:
mode++;
display(mode);
if(mode>1)
{
mode=0;
}
display(mode);
break;
/*case 2:
mode++;
display(mode);
if(mode>2)
{
mode=0;
}
display(mode);
break;
*/
default: break;
}
}
}
void Timer0Init(void)
{
TMOD = 0x01;
TL0 = 0xFD;
TH0 = 0x4B;
TR0 = 1;
while(TF0 == 0);
TF0 = 0;
TR0 = 0;
}
void Delay(unsigned int xms)
{
unsigned char i, j;
while(xms)
{
i = 2;
j = 239;
do
{
while (--j);
} while (--i);
xms--;
}
}
void mode0()
{
mybit = ~mybit;
Timer0Init();
}
void mode1()
{
mybit = 1;
Timer0Init();
mybit = 0;
Timer0Init();
Timer0Init();
Timer0Init();
}
void display( mode)
{
switch(mode)
{
case 0:mode0();break;
case 1:mode1();break;
default:mode0();break;
}
}
8051单片机，定时器产生方波，计数_程序源码＋仿真.zip （43个子文件） 
8051单片机，定时器产生方波，计数_程序源码＋仿真 程序源码 c_project 
first_project.a51 165B Objects first_project.obj 508B first_project.build_log.htm 1KB first_project 1KB STARTUP.obj 828B first_project.lnp 142B first_project.hex 141B first_project.uvproj 14KB STARTUP.A51 6KB Listings first_project.lst 2KB first_project.m51 4KB STARTUP.lst 14KB 新建文件夹 first_project.uvgui.12733 87KB first_project.uvopt 6KB c_2project pro2.c 2KB Objects pro2 6KB pro2.build_log.htm 1015B pro2.obj 6KB pro2.lnp 115B STARTUP.obj 828B pro2.hex 958B STARTUP.A51 6KB pro2.uvproj 14KB Listings pro2.m51 9KB pro2.lst 6KB STARTUP.lst 14KB pro2.uvopt 6KB pro2.uvgui.12733 87KB c_4progrem Objects cc.obj 3KB pro4.build_log.htm 1KB pro4 4KB STARTUP.obj 828B pro4.lnp 113B pro4.hex 668B pro4.uvgui.12733 87KB pro4.uvopt 6KB STARTUP.A51 6KB Listings cc.lst 2KB pro4.m51 5KB STARTUP.lst 14KB pro4.uvproj 14KB cc.c 545B 仿真图 HurricaneLamp.pdsprj 21KB资源评论
