📄 cheshi.c
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#include <LPC21XX.H>
#define rs (1<<10)
#define rw (1<<11)
#define en (1<<12)
#define busy (1<<7) //P0.7
#define ds1302_cs (1<<16)
#define ds1302_sck (1<<17)
#define ds1302_dio (1<<18)
//--------按键引脚设置
#define ENTER_KEY (IO0PIN&(1<<23))
#define ADD_KEY (IO0PIN&(1<<24))
#define DEC_KEY (IO0PIN&(1<<25))
extern unsigned char read_ds1302_rtc(unsigned char rtc_address);
extern void write_ds1302_rtc(unsigned char rtc_address,unsigned char rtc_data);
extern void ds1302_init(void);
extern int putchar (int ch);
extern void serialPuts(char *p);
extern void uart1Init(void);
extern void puthex (int hex);
extern void putstr (char *p);
typedef unsigned char uint8;
uint8 lcdrtcdatebuffer[]={" 2008/01/01 "};
uint8 lcdrtctimebuffer[]={" 1 00:00:00 "};
char ledUp[]={"The LED is up!\n"};
unsigned int halfsecondflag,secondflag;
unsigned int halfsecondcount=0,secondcount=0;
void ds1302_init(void)
{
IO0DIR|=ds1302_cs;
IO0CLR|=ds1302_cs;
IO0DIR|=ds1302_sck;
IO0CLR|=ds1302_sck;
IO0DIR&=~ds1302_dio;
}
void waitLCD() /*等待LCD*/
{
IO0DIR|=0x1c00;
while(1)
{
IO0CLR=rs;
IO0SET=rw;
IO0SET=en;
if(!(IO0PIN & busy))break;
IO0CLR = en;
}
IO0DIR|=0xfff;
}
void lcdOp(uint8 dat) /*送LCD控制码*/
{
waitLCD();
IO0CLR=rs;
IO0CLR=rw;
IO0CLR=0xff;
IO0SET=dat;
IO0SET=en;
IO0CLR=en;
}
void lcdData(uint8 dat) /*送LCD显示数据*/
{
waitLCD();
IO0SET=rs;
IO0CLR=rw;
IO0CLR=0xff;
IO0SET=dat;
IO0SET=en;
IO0CLR=en;
}
void lcdInit(void) /*初始化LCD，DataSheet里有建议的初始化代码*/
{
/* LCD配置为两行，5*7字体 */
lcdOp(0x38);
lcdOp(0x38);
lcdOp(0x06);
lcdOp(0x0E);
lcdOp(0x01);
/* LCD配置为一行，5*10字体
lcdOp(0x34);
lcdOp(0x34);
lcdOp(0x06);
lcdOp(0x0E);
lcdOp(0x01);
*/
}
void lcdDisplay(uint8 addr,uint8 *p) /*LCD显示字符串*/
{
lcdOp(addr);
while(*p !='\0'){
lcdData(*(p++));
}
}
void lcdClear(void) /*LCD清屏*/
{
lcdOp(0x01);
}
void delay (void) {
unsigned volatile long i,j;
for(i=0;i<60000;i++)
for(j=0;j<10;j++)
;
}
//----------------------------
//DS1302实时日历时钟结构体变量的定义
struct rtc_struct
{
signed char second;
signed char minute;
signed char hour;
signed char day;
signed char month;
signed char year;
signed char week;
};
struct rtc_struct ds1302;
#define LEDSEG_CON (1<<25)
#define LEDBIT_CON (1<<26)
//数码管笔段代码表和位选通段代码
const unsigned char LEDSEGCODE[]=
{0x3f,0x06,0x5b,0x4f,0x66,
0x6d,0x7d,0x07,0x7f,0x6f,0x40,
};
const unsigned char LEDBITCODE[]=
{
0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f,
};
//数码管显示变量和显示扫描指针变量定义
unsigned char LEDBuffer[8];
unsigned char LEDPointer;
void display(void)
{
IO0CLR = 0x000800;
lcdDisplay(0x80,lcdrtcdatebuffer);
delay();
//lcdClear();
IO0SET = 0x000800;
lcdDisplay(0xc0,lcdrtctimebuffer);
delay();
//lcdClear();
}
//---------------------------
//Timer0定时1ms中断服务程序
void timer0_vect (void) __irq
{
T0IR=1;
VICVectAddr=0;
//---------------------------
//数码管显示程序
//IO0SET|=(0xFF<<16);
//数码管动态扫描
//LEDPointer=1;
IO1CLR|=(0xFF<<16);IO0SET|=LEDSEG_CON;
IO1SET|=(LEDSEGCODE[LEDBuffer[LEDPointer]]<<16);
IO0CLR|=LEDSEG_CON;
IO1CLR|=(0xFF<<24);IO0SET|=LEDBIT_CON;
IO1SET|=(LEDBITCODE[LEDPointer]<<24);
IO0CLR|=LEDBIT_CON;
LEDPointer++;
if(sizeof(LEDBuffer)==LEDPointer)LEDPointer=0;
LEDBuffer[0]=ds1302.hour/10;
LEDBuffer[1]=ds1302.hour%10;
LEDBuffer[2]=10;
LEDBuffer[3]=ds1302.minute/10;
LEDBuffer[4]=ds1302.minute%10;
LEDBuffer[5]=10;
LEDBuffer[6]=ds1302.second/10;
LEDBuffer[7]=ds1302.second%10;
//用定时0.5s中读取DS1302的实时日历时钟信息
halfsecondcount++;
if(1000==halfsecondcount)
{
halfsecondcount=0;
halfsecondflag=1;
}
//用定时0.5s中读取DS1302的实时日历时钟信息
secondcount++;
if(2000==secondcount)
{
secondcount=0;
secondflag=1;
}
}
void timer0_init(void)
{
T0MR0=4999;
T0MCR=3;
T0TCR=1;
VICVectAddr0=(unsigned long)timer0_vect;
VICVectCntl0=0x20|4;
VICIntEnable|=(1<<4);
}
void write_time(void)
{
write_ds1302_rtc(0x8e,0x00);
write_ds1302_rtc(0x8c,ds1302.year); //写入ds1302年单元
write_ds1302_rtc(0x88,ds1302.month); //写入ds1302月单元
write_ds1302_rtc(0x86,ds1302.day); //写入ds1302日单元
write_ds1302_rtc(0x8a,ds1302.week); //写入ds1302星期单元
write_ds1302_rtc(0x84,ds1302.hour); //写入ds1302时单元
write_ds1302_rtc(0x82,ds1302.minute); //写入ds1302分单元
write_ds1302_rtc(0x80,ds1302.second); //写入ds1302秒单元
write_ds1302_rtc(0x8e,0x80);
}
void time_to_lcdbuffer(void)
{
lcdrtcdatebuffer[5]=(ds1302.year/10)+0x30;
lcdrtcdatebuffer[6]=(ds1302.year%10)+0x30;
lcdrtcdatebuffer[8]=(ds1302.month/10)+0x30;
lcdrtcdatebuffer[9]=(ds1302.month%10)+0x30;
lcdrtcdatebuffer[11]=(ds1302.day/10)+0x30;
lcdrtcdatebuffer[12]=(ds1302.day%10)+0x30;
lcdrtctimebuffer[3]=ds1302.week+0x30;
lcdrtctimebuffer[5]=(ds1302.hour/10)+0x30;
lcdrtctimebuffer[6]=(ds1302.hour%10)+0x30;
lcdrtctimebuffer[8]=(ds1302.minute/10)+0x30;
lcdrtctimebuffer[9]=(ds1302.minute%10)+0x30;
lcdrtctimebuffer[11]=(ds1302.second/10)+0x30;
lcdrtctimebuffer[12]=(ds1302.second%10)+0x30;
}
void display1(void)
{
time_to_lcdbuffer();
display();
}
//按键子程序中调用的延时
void Delay (unsigned long t)
{
while(t--);
}
//按键设置
///*
void KeyBoard_Scan(void)
{
unsigned char bitse=0;
unsigned char esc=0;
unsigned char temp,write;
if(ENTER_KEY==0)
{
Delay(100000);
if(ENTER_KEY==0)
{
ds1302.second=8;
ds1302.minute=30;
ds1302.hour=10;
ds1302.day=1;
ds1302.month=10;
ds1302.year=8;
ds1302.week=5;
esc=1;
display1();
while(ENTER_KEY==0);
}
}
while(esc)
{
if(ENTER_KEY==0)
{
Delay(100000);
if(ENTER_KEY==0)
{
bitse++;
if(bitse>8)
{bitse=0; }
while(ENTER_KEY==0);
}
}
if(bitse==1)
{
if(ADD_KEY==0)
{
Delay(100000);
if(ADD_KEY==0)
{ds1302.second++;}
if(ds1302.second>=59)
{ ds1302.second=0;}
display1();
while(ADD_KEY==0);
}
if(DEC_KEY==0)
{
Delay(100000);
if(DEC_KEY==0)
{ ds1302.second--;}
if(ds1302.second<=0)
{ds1302.second=59;}
display1();
while(DEC_KEY==0);
}
}
if(bitse==2)
{ if(ADD_KEY==0)
{
Delay(100000);
if(ADD_KEY==0)
{
ds1302.minute++;
if(ds1302.minute>=59)
{ ds1302.minute=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
while(DEC_KEY==0)
{
ds1302.minute--;
if(ds1302.minute<=0)
{ds1302.minute=60;}
display1();
while(DEC_KEY==0);
}
}
}
if(bitse==3)
{ if(ADD_KEY==0)
{
Delay(100000);
if(ADD_KEY==0)
{
ds1302.hour++;
if(ds1302.hour>=24)
{ ds1302.hour=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
if(DEC_KEY==0)
{
ds1302.hour--;
if(ds1302.hour<=0)
{ds1302.hour=24;}
display1();
while(DEC_KEY==0);
}
}
}
//if(bitse==4)esc=0;
if(bitse==4)
{ if(ADD_KEY==0)
{
Delay(100000);
while(ADD_KEY==0)
{
ds1302.day++;
if(ds1302.day>=31)
{ ds1302.day=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
while(DEC_KEY==0)
{
ds1302.day--;
if(ds1302.day<=0)
{ds1302.day=31;}
display1();
while(DEC_KEY==0);
}
}
}
if(bitse==5)
{ if(ADD_KEY==0)
{
Delay(100000);
while(ADD_KEY==0)
{
ds1302.month++;
if(ds1302.month>=12)
{ ds1302.month=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
while(DEC_KEY==0)
{
ds1302.month--;
if(ds1302.month<=0)
{ds1302.month=12;}
display1();
while(DEC_KEY==0);
}
}
}
if(bitse==6)
{ if(ADD_KEY==0)
{
Delay(100000);
while(ADD_KEY==0)
{
ds1302.year++;
if(ds1302.year>=99)
{ ds1302.year=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
while(DEC_KEY==0)
{
ds1302.year--;
if(ds1302.year==-1)
{ds1302.year=99;}
display1();
while(DEC_KEY==0);
}
}
}
if(bitse==7)
{
if(ADD_KEY==0)
{
Delay(100000);
while(ADD_KEY==0)
{
ds1302.week++;
if(ds1302.week>=7)
{ ds1302.week=0;}
display1();
while(ADD_KEY==0);
}
}
if(DEC_KEY==0)
{
Delay(100000);
while(DEC_KEY==0)
{
ds1302.week--;
if(ds1302.week<=0)
{ds1302.week=7;}
display1();
while(DEC_KEY==0);
}
}
}
if(bitse==8)
{esc=0;write=1;}
}
if(write==1)
{
temp=ds1302.second;
ds1302.second=(temp/10)*16+(temp%10); //将十进制数转换成十六进制
temp=ds1302.minute;
ds1302.minute=(temp/10)*16+(temp%10);
temp=ds1302.hour;
ds1302.hour=(temp/10)*16+(temp%10);
temp=ds1302.day;
ds1302.day=(temp/10)*16+(temp%10);
temp=ds1302.month;
ds1302.month=(temp/10)*16+(temp%10);
temp=ds1302.year;
ds1302.year=(temp/10)*16+(temp%10);
temp=ds1302.week;
ds1302.week=(temp/10)*16+(temp%10);
write_time();
write=0;
}
}
void time_to_uart(void)
{
unsigned char temp;
putstr ("20");
putchar(ds1302.year/10+0x30);
putchar(ds1302.year%10+0x30);
putstr ("Year");
putstr (" ");
putchar(ds1302.month/10+0x30);
putchar(ds1302.month%10+0x30);
putstr ("Month");
putstr (" ");
putchar(ds1302.day/10+0x30);
putchar(ds1302.day%10+0x30);
putstr ("Day");
putstr (" ");
putstr ("Week");
putchar(ds1302.week/10+0x30);
putchar(ds1302.week%10+0x30);
putstr ("\n");
putchar(ds1302.hour/10+0x30);
putchar(ds1302.hour%10+0x30);
putstr ("Hour");
putstr (" ");
putchar(ds1302.minute/10+0x30);
putchar(ds1302.minute%10+0x30);
putstr ("Minute");
putstr (" ");
putchar(ds1302.second/10+0x30);
putchar(ds1302.second%10+0x30);
putstr ("second");
putstr ("\n");
}
int main(void)
{
unsigned char temp;
PINSEL0 = 0x00050000; /* 设置引脚，开串口功能 */
lcdInit(); /*初始化LCD显示*/
ds1302_init();
timer0_init();
uart1Init();
IO0DIR|=0xffff; //设置为输出口
IO0CLR=0xffff;
IO0DIR&=~(0x07<<23); //设置P0.23~25为输入
write_ds1302_rtc(0x8e,0x00);
write_ds1302_rtc(0x90,0xa5); //打开ds1302涓流充电
write_ds1302_rtc(0x8e,0x80);
//write_time();
//------数码管显示-----初始化
IO1DIR|=(0xFF<<16);//P1.16-p1.23配置为输出
IO1DIR|=(0xFF<<24);//P1.23-p1.31配置为输出
//---------------------------------------------
//以下将处理的结果存储在Datet和Time显示缓冲区中
while(1)
{
KeyBoard_Scan();
if(1==halfsecondflag)
{
halfsecondflag=0; //清标志
temp=read_ds1302_rtc(0x81); //读收DS1302的秒单元
ds1302.second=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x83); //读取DS1302的分单元
ds1302.minute=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x85); //读取DS1302的时单元
ds1302.hour=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x87); //读取DS1302的日单元
ds1302.day=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x89); //读取DS1302的月单元
ds1302.month=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x8d); //读取DS1302的年单元
ds1302.year=(temp/16)*10+(temp%16);
temp=read_ds1302_rtc(0x8b); //读取DS1302的星期单元
ds1302.week=(temp/16)*10+(temp%16);
time_to_lcdbuffer();
}
display();
if(1==secondflag) //隔1秒串口输出一次时间信息
{
secondflag=0; //清标志
time_to_uart();
}
}
}
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