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#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 //按鍵消抖時間 (毫秒)
#define reset() IAP_CONTR |= 0x20 //芯片復位
#define feed_dog() WDT_CONTR |= 0x10 //看門狗喂狗
u8 code nbr[16] = { //共陰數碼管段碼16進制
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71
};
u8 show[4]; //4位數碼管當前顯示的段碼更改數碼管顯示的段碼只需更改此數組
u8 wink; //閃爍的數碼管段碼 0x01: 第一位閃爍 0x02:第二位閃爍 0x04: 第三位閃爍 0x0F:全閃爍 0x00:全不閃爍
sbit P3_0 = P3 ^ 0; //按鍵S1 (I/O口定義的按鍵未經消抖,請勿在中斷外直接使用)
sbit P3_1 = P3 ^ 1; //按鍵S2
sbit P3_2 = P3 ^ 2; //有源蜂鳴器低電平鳴叫
sbit P3_3 = P3 ^ 3; //繼電器或MOS管低電平吸合(導通)
u16 S1_ms, S2_ms; //按鍵0、按鍵1連續按下的時間定時器中斷計數此變量最長65535毫秒松開清零
u16 delay_ms; //定時器中斷延時 (毫秒)
u16 time; //定時時間 (秒)
u16 beep_ms; //蜂鳴器鳴叫時間 (毫秒)
u16 bdata Bit16 = 0; //定義16位可位尋址變量
sbit delay = Bit16 ^ 0; //定時器中斷延時毫秒開關中斷外置1 延時完中斷內清0
sbit test = Bit16 ^ 1; //此值為1數碼管全亮蜂鳴器響所有按鍵無效否則正常
sbit S1 = Bit16 ^ 2; //按鍵0 連續按下N毫秒清0, 松開置1(定時器0中斷消抖)
sbit S2 = Bit16 ^ 3; //按鍵1 (處理方式與按鍵0相同)
sbit hz10 = Bit16 ^ 4; //10Hz信號源 (定時器0中斷產生,用于控制數碼管閃爍)
sbit bak = Bit16 ^ 5; //按鍵長按識別處理用
sbit Beep = Bit16 ^ 6; //有源蜂鳴器低電平響
sbit start = Bit16 ^ 7; //倒計時開關置1倒計時開始清0則結束
sbit pause = Bit16 ^ 8; //1暫停倒計時 0正常
sbit relay = Bit16 ^ 9; //繼電器或MOS管低電平吸合(導通) 1秒只能吸合或釋放1次
void InitTimer0() { //初始化定時器0中斷
TMOD = 0x01;
TH0 = 0xFC;
TL0 = 0x18;
EA = 1;
ET0 = 1;
TR0 = 1;
}
void beep(u16 ms) { //蜂鳴器鳴叫參數:鳴叫毫秒
beep_ms = ms;
Beep = 0;
}
u16 set_time() { //設定定時時間
u8 n = 0; //0:編輯千位 1:百位 2:十位 3:個位
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); //長按延時等待
while (S2_ms >= 500) { //按鍵長按,開始連加
feed_dog();
delay_ms = 125; delay = 1; //0.125秒連加一次
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++; //輸入下一位
while (S1 == 0) {
feed_dog();
if (S1_ms >= 1000 && !bak) { //長按退回編輯
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) { //個位輸入完成
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; //初始化看門狗
P1M0 = 0x0F; P1M1 = 0x00; //P1.0~P1.3強推挽
P2M0 = 0xFF; P2M1 = 0x00; //P2.0~P2.7強推挽
//上電1秒數碼管全亮蜂鳴器響
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 { //時間設定
time = set_time();
} while (!time);
time -= 1;
start = 1;
relay = 0;
while (start) {
feed_dog();
if (S1 == 0) { //S1按下蜂鳴器響1下
beep(50);
while (S1 == 0) {
feed_dog();
}
}
if (S2 == 0) { //S2按下暫停倒計時
beep(50);
pause = !pause;
relay = pause;
while (S2 == 0) {
feed_dog();
if (pause && S2_ms >= 3000) { //長按3秒復位
_nop_(); _nop_(); _nop_(); _nop_();
reset();
_nop_(); _nop_(); _nop_(); _nop_();
}
}
}
}
//倒計時結束
show[0] = 0x79; //E
show[1] = 0x54; //n
show[2] = 0x5E; //d
show[3] = 0x00;
for (i = 0; i < 6; i++) { //蜂鳴器響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定時器中斷
static u8 seg = 0; //當前正在掃描的數碼管段碼 4位數碼管范圍:0~3
static u8 ms1 = 0;
static u16 ms = 0, ms2 = 0;
TH0 = 0xFC;
TL0 = 0x18;
if (delay && !--delay_ms) { //延時任意毫秒
delay = 0;
}
//數碼管動態掃描處理
P1 |= 0xF; //消影
P2 = test ? 0xFF : (wink & (1 << (3 ^ seg)) && !hz10 ? 0 : show[seg]); //段碼
P1 &= ~(1 << seg); //位碼
if (++seg >= 4) seg = 0;
if (test) { //測試模式
S1 = 1; S2 = 1;
P3_2 = 0;
return;
}
//蜂鳴器處理
P3_2 = Beep;
if (!Beep && !--beep_ms) {
Beep = 1;
}
if (++ms1 >= 50) {
ms1 = 0;
hz10 = !hz10;
}
//按鍵處理
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);
//繼電器處理
if (++ms2 >= 1000) { //繼電器1秒只能進行1次吸合或釋放，防止頻繁開關導致設備損壞
ms2 = 0;
P3_3 = relay;
}
//時間倒計時處理
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--) { //倒計時結束
start = 0;
relay = 1;
}
}
}
}
}

復制代碼

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