基于STC单片机的继电器1~9999秒定时断电器程序 2按键+4位共阴数码管+有源蜂鸣器 -

#include "STC15.h"
#include "intrins.h"
#define u8 unsigned char
#define u16 unsigned int
#define u32 unsigned long
#define s8 signed char
#define s16 signed int
#define s32 signed long
#define KEY_TIME 25 //按键消抖时间 (毫秒)
#define reset() IAP_CONTR |= 0x20 //芯片复位
#define feed_dog() WDT_CONTR |= 0x10 //看门狗喂狗
u8 code nbr[16] = { //共阴数码管段码16进制
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71
};
u8 show[4]; //4位数码管当前显示的段码更改数码管显示的段码只需更改此数组
u8 wink; //闪烁的数码管段码 0x01: 第一位闪烁 0x02:第二位闪烁 0x04: 第三位闪烁 0x0F:全闪烁 0x00:全不闪烁
sbit P3_0 = P3 ^ 0; //按键S1 (I/O口定义的按键未经消抖,请勿在中断外直接使用)
sbit P3_1 = P3 ^ 1; //按键S2
sbit P3_2 = P3 ^ 2; //有源蜂鸣器低电平鸣叫
sbit P3_3 = P3 ^ 3; //继电器或MOS管低电平吸合(导通)
u16 S1_ms, S2_ms; //按键0、按键1连续按下的时间定时器中断计数此变量最长65535毫秒松开清零
u16 delay_ms; //定时器中断延时 (毫秒)
u16 time; //定时时间 (秒)
u16 beep_ms; //蜂鸣器鸣叫时间 (毫秒)
u16 bdata Bit16 = 0; //定义16位可位寻址变量
sbit delay = Bit16 ^ 0; //定时器中断延时毫秒开关中断外置1 延时完中断内清0
sbit test = Bit16 ^ 1; //此值为1数码管全亮蜂鸣器响所有按键无效否则正常
sbit S1 = Bit16 ^ 2; //按键0 连续按下N毫秒清0, 松开置1(定时器0中断消抖)
sbit S2 = Bit16 ^ 3; //按键1 (处理方式与按键0相同)
sbit hz10 = Bit16 ^ 4; //10Hz信号源 (定时器0中断产生,用于控制数码管闪烁)
sbit bak = Bit16 ^ 5; //按键长按识别处理用
sbit Beep = Bit16 ^ 6; //有源蜂鸣器低电平响
sbit start = Bit16 ^ 7; //倒计时开关置1倒计时开始清0则结束
sbit pause = Bit16 ^ 8; //1暂停倒计时 0正常
sbit relay = Bit16 ^ 9; //继电器或MOS管低电平吸合(导通) 1秒只能吸合或释放1次
void InitTimer0() { //初始化定时器0中断
TMOD = 0x01;
TH0 = 0xFC;
TL0 = 0x18;
EA = 1;
ET0 = 1;
TR0 = 1;
}
void beep(u16 ms) { //蜂鸣器鸣叫参数:鸣叫毫秒
beep_ms = ms;
Beep = 0;
}
u16 set_time() { //设定定时时间
u8 n = 0; //0:编辑千位 1:百位 2:十位 3:个位
u8 o[4];
o[0] = 0; o[1] = 0; o[2] = 0; o[3] = 0;
while (1) {
feed_dog();
wink = 8 >> n;
show[0] = nbr[o[0]];
show[1] = nbr[o[1]];
show[2] = nbr[o[2]];
show[3] = nbr[o[3]];
if (S2 == 0) { //S2按下短按加1
beep(50);
if (o[n]++ >= 9) o[n] = 0;
show[n] = nbr[o[n]];
delay_ms = 500; delay = 1;
while (delay && S2 == 0); //长按延时等待
while (S2_ms >= 500) { //按键长按,开始连加
feed_dog();
delay_ms = 125; delay = 1; //0.125秒连加一次
while (delay && S2 == 0);
beep(50);
if (o[n]++ >= 9) o[n] = 0;
show[n] = nbr[o[n]];
}
delay = 0;
delay_ms = 0;
}
if (S1 == 0) { //S1按下
beep(50);
n++; //输入下一位
while (S1 == 0) {
feed_dog();
if (S1_ms >= 1000 && !bak) { //长按退回编辑
beep(50);
n = 0;
wink = 8 >> n;
show[0] = nbr[o[0]];
show[1] = nbr[o[1]];
show[2] = nbr[o[2]];
show[3] = nbr[o[3]];
bak = 1;
}
}
if (bak) {
bak = 0;
continue;
}
if (n >= 4) { //个位输入完成
wink = 0;
return o[0] * 1000 + o[1] * 100 + o[2] * 10 + o[3];
}
}
}
return 0;
}
void main() {
u8 i = 0;
Beep = 1;
WDT_CONTR = 0x27; //初始化看门狗
P1M0 = 0x0F; P1M1 = 0x00; //P1.0~P1.3强推挽
P2M0 = 0xFF; P2M1 = 0x00; //P2.0~P2.7强推挽
//上电1秒数码管全亮蜂鸣器响
test = 1;
InitTimer0();
delay_ms = 1000; delay = 1;
while (delay);
test = 0;
show[0] = nbr[0];
show[1] = nbr[0];
show[2] = nbr[0];
show[3] = nbr[0];
while (1) {
relay = 1;
pause = 0;
do { //时间设定
time = set_time();
} while (!time);
time -= 1;
start = 1;
relay = 0;
while (start) {
feed_dog();
if (S1 == 0) { //S1按下蜂鸣器响1下
beep(50);
while (S1 == 0) {
feed_dog();
}
}
if (S2 == 0) { //S2按下暂停倒计时
beep(50);
pause = !pause;
relay = pause;
while (S2 == 0) {
feed_dog();
if (pause && S2_ms >= 3000) { //长按3秒复位
_nop_(); _nop_(); _nop_(); _nop_();
reset();
_nop_(); _nop_(); _nop_(); _nop_();
}
}
}
}
//倒计时结束
show[0] = 0x79; //E
show[1] = 0x54; //n
show[2] = 0x5E; //d
show[3] = 0x00;
for (i = 0; i < 6; i++) { //蜂鸣器响6下
delay_ms = 500; delay = 1; while (delay);
beep(500);
while (!Beep);
feed_dog();
}
while (1) {
feed_dog();
if (S1 == 0 || S2 == 0) {
beep(50);
while (S1 == 0 || S2 == 0) {
feed_dog();
}
break;
}
}
}
}
void Timer0Interrupt() interrupt 1{ //12Mhz 1mS定时器中断
static u8 seg = 0; //当前正在扫描的数码管段码 4位数码管范围:0~3
static u8 ms1 = 0;
static u16 ms = 0, ms2 = 0;
TH0 = 0xFC;
TL0 = 0x18;
if (delay && !--delay_ms) { //延时任意毫秒
delay = 0;
}
//数码管动态扫描处理
P1 |= 0xF; //消影
P2 = test ? 0xFF : (wink & (1 << (3 ^ seg)) && !hz10 ? 0 : show[seg]); //段码
P1 &= ~(1 << seg); //位码
if (++seg >= 4) seg = 0;
if (test) { //测试模式
S1 = 1; S2 = 1;
P3_2 = 0;
return;
}
//蜂鸣器处理
P3_2 = Beep;
if (!Beep && !--beep_ms) {
Beep = 1;
}
if (++ms1 >= 50) {
ms1 = 0;
hz10 = !hz10;
}
//按键处理
if (P3_0 == 0) {
if (S1_ms != 0xFFFF) S1_ms++;
}
else {
S1_ms = 0;
}
if (P3_1 == 0) {
if (S2_ms != 0xFFFF) S2_ms++;
}
else {
S2_ms = 0;
}
S1 = !(S1_ms >= KEY_TIME);
S2 = !(S2_ms >= KEY_TIME);
//继电器处理
if (++ms2 >= 1000) { //继电器1秒只能进行1次吸合或释放，防止频繁开关导致设备损坏
ms2 = 0;
P3_3 = relay;
}
//时间倒计时处理
if (start) {
if (pause) {
wink = 0xF;
}
else {
wink = 0;
if (++ms >= 1000) {
ms = 0;
show[0] = nbr[time / 1000 % 10];
show[1] = nbr[time / 100 % 10];
show[2] = nbr[time / 10 % 10];
show[3] = nbr[time % 10];
if (!time--) { //倒计时结束
start = 0;
relay = 1;
}
}
}
}
}

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