电子说
首先准备材料吧:SEG数码管4个共阴极(小编用的共阳极的)、10k排阻(小编没有直接做了个)、51单片机、按钮、30p电容、12MHz晶振、10k电阻、10uf电容、插针、74ls245(小编用三极管代替了)。
成品图
原理图
主程序:
#include "Key.h"
#include "led.h"
uchar timeSetBuff[8]={'0','0',LED_MODE_COUNT,'0','0',LED_MODE_COUNT,'0','0'};//时钟数据缓冲区
uchar alarmSetBuff[8]={'0','0',LED_MODE_ALARM,'0','0',LED_MODE_ALARM,'0','0'};//闹钟时间数据缓冲区
uchar timeDisMod=0x24; //00100100
uchar secondTemp,minuteTemp,hourTemp;
uchar secondAlarm,minuteAlarm,hourAlarm;
uchar timer0Temp;
uchar alarmKeyCount; //闹钟起停键计数
bit alarm_is_ok; //闹钟起停状态
bit time_is_ok; //时间是否到
bit interface_mod; // 显示界面模式,0为主时间界面,1为设置界面
/********************************************************************************************
* 函数名称:定时器0
* 功 能:定时器0初始化
* 入口参数:无
* 出口参数:无
*********************************************************************************************/
void initTimer0(void) //定时10ms
{
TMOD |= 0x01; //GATE=0,TR=1运行;C/T=1,counter,0,timer;01十六进制
TH0 = 0xdc;
TL0 = 0x00;
TR0 = 1; //timer0 控制位,为1时启动timer0
ET0 = 1; //timer0 中断使能
}
/********************************************************************************************
* 函数名称:时钟比较
* 功 能:比较时钟和闹钟的时间缓冲区,只比较时和分
* 入口参数:无
* 出口参数:无
*********************************************************************************************/
void timeCompare(void)
{
if((minuteTemp == minuteAlarm) && (hourTemp == hourAlarm))
{
time_is_ok = 1;
alarm_is_ok = 0;
interface_mod = 1;
}
}
/********************************************************************************************
* 函数名称:主函数
* 功 能:调用并执行各个子函数
* 入口参数:无
* 出口参数:无
*********************************************************************************************/
void main()
{
uchar keyRead;
init_led();
init_key();
initTimer0();
timer0Temp = 0x00;
secondTemp = 0x00;
minuteTemp = 0x00;
hourTemp = 0x00;
secondAlarm = 0x00;
minuteAlarm = 0x00;
hourAlarm = 0x00;
alarmKeyCount = 0x02;
alarm_is_ok = 0; //默认状态停止
time_is_ok = 0; //默认时间未到
interface_mod = 0;
sei();
while(1)
{
if(interface_mod == 1)
ledSweepDisplay(alarmSetBuff,timeDisMod);
else
ledSweepDisplay(timeSetBuff,timeDisMod);
if(alarm_is_ok == 1)
timeCompare();
keyRead = get_key_value();
if(keyRead == KEY_ALARM)
{
if(alarm_is_ok == 1 || time_is_ok == 1)
{
alarm_is_ok = 0;
time_is_ok = 0;
interface_mod = 0;
alarmKeyCount = 0x00;
}
else
{
if(alarmKeyCount
alarmKeyCount++;
else
alarmKeyCount = 0x00;
if(alarmKeyCount == 0x01)
interface_mod = 1;
if(alarmKeyCount == 0x02)
{
alarm_is_ok = 1;
interface_mod = 0;
}
}
}
if(keyRead == KEY_SECOND)
{ if(interface_mod == 1)
{
if(secondAlarm
secondAlarm++;
else
secondAlarm = 0x00;
alarmSetBuff[S_L] = secondAlarm % 10 + '0';
alarmSetBuff[S_H] = secondAlarm / 10 + '0';
}
else
{
if(secondTemp
secondTemp += 1;
else
secondTemp = 0x00;
timeSetBuff[S_L] = secondTemp % 10 + '0';
timeSetBuff[S_H] = secondTemp / 10 + '0';
}
}
if(keyRead == KEY_MINUTE)
{ if(interface_mod == 1)
{
if(minuteAlarm
minuteAlarm++;
else
minuteAlarm=0x00;
alarmSetBuff[M_L]=minuteAlarm%10+'0';
alarmSetBuff[M_H]=minuteAlarm/10+'0';
}
else
{
if(minuteTemp
minuteTemp += 1;
else
minuteTemp = 0x00;
timeSetBuff[M_L] = minuteTemp % 10 + '0';
timeSetBuff[M_H] = minuteTemp / 10 + '0';
}
}
if(keyRead == KEY_HOUR)
{
if(interface_mod == 1)
{
if(hourAlarm
hourAlarm++;
else
hourAlarm = 0x00;
alarmSetBuff[H_L] = hourAlarm % 10 + '0';
alarmSetBuff[H_H] = hourAlarm / 10 + '0';
}
else
{
if(hourTemp
hourTemp += 1;
else
hourTemp = 0x00;
timeSetBuff[H_L] = hourTemp%10+'0';
timeSetBuff[H_H] = hourTemp/10+'0';
}
}
}
}
/*, */
/********************************************************************************************
* 函数名称:定时器0中断函数
* 功 能:定时器0溢出中断入口处,定时10ms
* 入口参数:无
* 出口参数:无
*********************************************************************************************/
void timer0_overflow(void) interrupt 1
{
TH0 = 0xdc;
TL0 = 0x00;
if(time_is_ok == 1) //报警
WARN_TRUMPET = ~WARN_TRUMPET;
if(timer0Temp
timer0Temp++;
else //进中断100次
{
timer0Temp = 0x00;
if(secondTemp
{
secondTemp++;
}
else
{
secondTemp = 0x00;
if(minuteTemp
minuteTemp++;
else
{
minuteTemp = 0x00;
if(hourTemp
hourTemp++;
else
hourTemp = 0x00;
}
}
}
timeSetBuff[S_L] = secondTemp%10+'0';
timeSetBuff[S_H] = secondTemp/10+'0';
timeSetBuff[M_L] = minuteTemp%10+'0';
timeSetBuff[M_H] = minuteTemp/10+'0';
timeSetBuff[H_L] = hourTemp%10+'0';
timeSetBuff[H_H] = hourTemp/10+'0';
sei();
}
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