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#include <msp430x14x.h>
typedef unsigned char uchar;
typedef unsigned int uint;
#define XTOFF 0x40
#define DataDir P4DIR
#define DataPort P4OUT
#define Busy 0x80
#define CtrlDir P3DIR
#define CLR_RS P3OUT&=~BIT0; //RS = P3.0
#define SET_RS P3OUT|=BIT0;
#define CLR_RW P3OUT&=~BIT1; //RW = P3.1
#define SET_RW P3OUT|=BIT1;
#define CLR_EN P3OUT&=~BIT2; //EN = P3.2
#define SET_EN P3OUT|=BIT2;
#define keyin (P2IN&0x0f)
uint high_level[19],dattmp[19];
uint low_level;
uchar month,day,year,hour,min,sec,weekday;
uchar tmp_month,tmp_day,tmp_year,tmp_hour,tmp_min,tmp_sec,tmp_weekday;
uchar flag;
uchar i;
uchar PP=0;
uchar cflag=0;
void main_test(void);
void Init_TimerA(void);
void Init_TimerB(void);
void Decode(void);
void Display(void);
void Delay10ms(void);
uchar Key4Scan(void);
void DispStr(uchar x,uchar y,uchar *ptr);
void DispNChar(uchar x,uchar y,uchar n,uchar *ptr);
void LocateXY(uchar x,uchar y);
void Disp1Char(uchar x,uchar y,uchar data);
void LcdReset(void);
void LcdWriteCommand(uchar cmd,uchar chk);
void LcdWriteData(uchar data);
void WaitForEnable(void);
void Delay5ms(void);
void main(void)
{
main_test();
}
void main_test(void)
{
WDTCTL = WDTPW + WDTHOLD; //關(guān)閉看門狗
P2DIR = 0x80;
P2OUT = 0x00;
LcdReset();
Init_TimerA();
Init_TimerB();
while(i<19)
;
while(19<=i)
Decode();
Display();
while(1)
{
if(!cflag)
{
Display();
}
switch(Key4Scan())
{
case 0x01:
switch(PP++) //確定游標(biāo)地址
{
case 0:
LocateXY(4,0);
break;
case 1:
LocateXY(7,0);
break;
case 2:
LocateXY(10,0);
break;
case 3:
LocateXY(14,0);
break;
case 4:
LocateXY(4,1);
break;
case 5:
LocateXY(7,1);
break;
case 6:
LocateXY(10,1);
break;
default:
break;
}
LcdWriteCommand(0x0f,1);
if(7==PP)
PP=0;
cflag=1; //標(biāo)志置位
break;
case 0x02:
if(cflag)
{
tmp_year=year;
tmp_month=month;
tmp_day=day;
tmp_hour=hour;
tmp_min=min;
tmp_sec=sec;
tmp_weekday=weekday;
switch(PP)
{
case 0: //年
year++;
if(99<year)
year=0;
Disp1Char(3,0,year/10+48);
Disp1Char(4,0,year%10+48);
LocateXY(4,0);
break;
case 1: //月
month++;
if(12<month)
month=0;
Disp1Char(6,0,month/10+48);
Disp1Char(7,0,month%10+48);
LocateXY(7,0);
break;
case 2: //日
day++;
switch(month)
{
case 2:
if(0==year%4)
{
if(29<day)
day=1;
}
else
if(28<day)
day=1;
break;
case 4:
case 6:
case 9:
case 11:
if(30<day)
day=1;
break;
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
if(31<day)
day=1;
default:
break;
}
Disp1Char(9,0,day/10+48);
Disp1Char(10,0,day%10+48);
LocateXY(10,0);
break;
case 3: //weekday
weekday++;
if(7<weekday)
weekday=1;
switch(weekday)
{
case 1:
Disp1Char(12,1,'M');
Disp1Char(13,1,'o');
Disp1Char(14,1,'n');
break;
case 2:
Disp1Char(12,1,'T');
Disp1Char(13,1,'u');
Disp1Char(14,1,'e');
break;
case 3:
Disp1Char(12,1,'W');
Disp1Char(13,1,'e');
Disp1Char(14,1,'d');
break;
case 4:
Disp1Char(12,1,'T');
Disp1Char(13,1,'h');
Disp1Char(14,1,'u');
break;
case 5:
Disp1Char(12,1,'F');
Disp1Char(13,1,'r');
Disp1Char(14,1,'i');
break;
case 6:
Disp1Char(12,1,'S');
Disp1Char(13,1,'a');
Disp1Char(14,1,'t');
break;
case 7:
Disp1Char(12,1,'S');
Disp1Char(13,1,'u');
Disp1Char(14,1,'n');
break;
default:
break;
}
LocateXY(14,0);
break;
case 4: //時
hour++;
if(24<hour)
hour=0;
Disp1Char(3,1,hour/10+48);
Disp1Char(4,1,hour%10+48);
LocateXY(4,1);
break;
case 5: //分
min++;
if(60<min)
min=0;
Disp1Char(6,1,min/10+48);
Disp1Char(7,1,min%10+48);
LocateXY(7,1);
break;
case 6: //時
sec++;
if(60<sec)
sec=0;
Disp1Char(9,1,sec/10+48);
Disp1Char(10,1,sec%10+48);
LocateXY(10,1);
break;
default:
break;
}
}
break;
case 0x03:
if(cflag)
{
cflag = 0;
PP = 0;
year=tmp_year;
month=tmp_month;
day=tmp_day;
hour=tmp_hour;
min=tmp_min;
sec=tmp_sec;
weekday=tmp_weekday;
Display();
LcdWriteCommand(0x0c,1);
}
break;
case 0x04:
if(cflag)
{
cflag = 0;
PP = 0;
LcdWriteCommand(0x0c, 1); //關(guān)閉游標(biāo)
}
break;
default:
break;
}
}
}
void Init_TimerA(void)
{
P1SEL|=BIT2; //set the port 1.2 to pulse-capture mode.
TACTL=TASSEL0+MC1+TACLR+TAIE; //Timer A clock source:ACLK | continuous mode | clear the Timer A | enable the Timer A.
CCTL1=CCIE+CM0+SCS+CAP; //enable the interrupt | capture mode | rising edge capture | synchronize capture source.
}
void Init_TimerB(void)
{
/*
BCSCTL1&=~XT2OFF;
BCSCTL2=SELS+DIVS1+DIVS0;
TBCTL=0x02d4;
CCTL0=CCIE;
CCR0=62500;
_EINT();
*/
TBCTL=TBSSEL0+TBCLR;
CCR0=32767;
TBCTL|=MC0;
CCTL0=CCIE;
}
void Decode(void)
{
uchar ii;
//while(1) //keep decoding.
//{
if(19<=i) //decode the value if the array is filled.
{
i=0;
for(ii=0;ii<19-flag;ii++) //set the former data number of high_level array.
dattmp[ii]=high_level[flag+ii];
for(ii=0;ii<flag;ii++) //set the latter data number of high_level array.
dattmp[19-flag+ii]=high_level[ii];
for(ii=0;ii<19;ii++) //reset the value of the dattmp array.
{
if(1638<dattmp[ii]&&dattmp[ii]<4915) //5%--15%
dattmp[ii]=0;
else if(4915<dattmp[ii]&&dattmp[ii]<8192) //15%--25%
dattmp[ii]=1;
else if(8192<dattmp[ii]&&dattmp[ii]<11468) //25%--35%
dattmp[ii]=2;
else if(11468<dattmp[ii]&&dattmp[ii]<14765) //35%--45%
dattmp[ii]=3;
}
year=dattmp[15]*16+dattmp[16]*4+dattmp[17];
month=dattmp[13]*4+dattmp[14];
day=dattmp[10]*16+dattmp[11]*4+dattmp[12];
hour=dattmp[2]*4+dattmp[3];
min=dattmp[4]*16+dattmp[5]*4+dattmp[6];
sec=dattmp[0]*20+20-flag;
weekday=dattmp[7]*4+dattmp[8];
flag=0;
if(2==dattmp[9]||3==dattmp[9])
hour+=12;
if(59<sec)
{
sec=0;
min++;
if(59<min)
{
min=0;
hour++;
if(11<hour)
hour=0;
}
}
}
//}
}
//type: Timer A interrupt service routine.
//purpose: get the high level pulse width,provide frame information for the function Decode.
//version: 1.0 by chen on 9/4/2014.
#pragma vector=TIMERA0_VECTOR
__interrupt void TimerA_ISR(void)
{
switch(TAIV)
{
case 2: //use 0x01==TAIV here for the consideration of the low frequency of watch oscillator.
if(CCTL1&CM0) //rising edge capture.
{
low_level=TAR; //get the low level width to judge the frame flag.
TACTL|=TACLR; //restart the counter to provide a pure origin for the high level width recording.
CCTL1=(CCTL1&(~CM0))|CM1; //switch the capture mode to falling edge capture.
}
else
if(CCTL1&CM1) //falling edge capture.
{
high_level[ i]=TAR; //record the value of the high level width.[ i]
i++;
TACTL|=TACLR; //restart the counter to provide a pure origin for the low level width recording.
CCTL1=(CCTL1&(~CM1))|CM0; //switch the capture mode to rising edge capture.
}
break;
default:
break;
}
if(4915<low_level) //resort the high_level array by the frame flag.
flag=i; //locate the frame flag position.
}
//type: Timer B interrupt service routine.
//purpose: provide a pulse for the main clock frequency per second.
//version: 1.0 by chen on 9/4/2014.
#pragma vector=TIMERB0_VECTOR
__interrupt void Timer_B(void)
{
sec++;
if(59<sec)
{
sec=0;
min++;
if(59<min)
{
min=0;
hour++;
if(23<hour)
hour=0;
}
}
if(cflag)
{
tmp_sec++;
if(59<sec)
{
tmp_sec=0;
tmp_min++;
if(59<tmp_min)
{
tmp_min=0;
tmp_hour++;
if(23<tmp_hour)
tmp_hour=0;
}
}
}
}
void Display(void)
{
Disp1Char(1,0,'2');
Disp1Char(2,0,'0');
Disp1Char(3,0,year/10+48);
Disp1Char(4,0,year%10+48);
Disp1Char(5,0,'-');
Disp1Char(6,0,month/10+48);
Disp1Char(7,0,month%10+48);
Disp1Char(8,0,'-');
Disp1Char(9,0,day/10+48);
Disp1Char(10,0,day%10+48);
Disp1Char(3,1,hour/10+48);
Disp1Char(4,1,hour%10+48);
Disp1Char(5,1,'-');
Disp1Char(6,1,min/10+48);
Disp1Char(7,1,min%10+48);
Disp1Char(8,1,'-');
Disp1Char(9,1,sec/10+48);
Disp1Char(10,1,sec%10+48);
switch(weekday)
{
case 1:
Disp1Char(12,1,'M');
Disp1Char(13,1,'o');
Disp1Char(14,1,'n');
break;
case 2:
Disp1Char(12,1,'T');
Disp1Char(13,1,'u');
Disp1Char(14,1,'e');
break;
case 3:
Disp1Char(12,1,'W');
Disp1Char(13,1,'e');
Disp1Char(14,1,'d');
break;
case 4:
Disp1Char(12,1,'T');
Disp1Char(13,1,'h');
Disp1Char(14,1,'u');
break;
case 5:
Disp1Char(12,1,'F');
Disp1Char(13,1,'r');
Disp1Char(14,1,'i');
break;
case 6:
Disp1Char(12,1,'S');
Disp1Char(13,1,'a');
Disp1Char(14,1,'t');
break;
case 7:
Disp1Char(12,1,'S');
Disp1Char(13,1,'u');
Disp1Char(14,1,'n');
break;
default:
break;
}
}
//explanation: following functions are the display effect function for the LCD 1602.
void DispStr(uchar x,uchar y,uchar *ptr)
{
uchar *temp;
uchar i,n=0;
temp=ptr;
while(*ptr++ != '\0')
n++; //計算字符串有效字符的個數(shù)
for (i=0;i<n;i++)
{
Disp1Char(x++,y,temp[ i]);[ i]
if (x == 0x0f)
{
x = 0;
y ^= 1;
}
}
}
void DispNChar(uchar x,uchar y,uchar n,uchar *ptr)
{
uchar i;
for (i=0;i<n;i++)
{
Disp1Char(x++,y,ptr[ i]);[ i]
if (x==0x0f)
{
x=0;
y^=1;
}
}
}
void LocateXY(uchar x,uchar y)
{
uchar temp;
temp=x&0x0f;
y&=0x01;
if(y)
temp|=0x40; //如果在第2行
temp|=0x80;
LcdWriteCommand(temp,1);
}
void Disp1Char(uchar x,uchar y,uchar data)
{
LocateXY(x,y);
LcdWriteData(data);
}
void LcdReset(void)
{
CtrlDir|=0x07; //控制線端口設(shè)為輸出狀態(tài)
DataDir=0xFF; //數(shù)據(jù)端口設(shè)為輸出狀態(tài)
LcdWriteCommand(0x38, 0); //規(guī)定的復(fù)位操作
Delay5ms();
LcdWriteCommand(0x38, 0);
Delay5ms();
LcdWriteCommand(0x38, 0);
Delay5ms();
LcdWriteCommand(0x38, 1); //顯示模式設(shè)置
LcdWriteCommand(0x08, 1); //顯示關(guān)閉
LcdWriteCommand(0x01, 1); //顯示清屏
LcdWriteCommand(0x06, 1); //寫字符時整體不移動
LcdWriteCommand(0x0c, 1); //顯示開，不開游標(biāo)，不閃爍
}
void LcdWriteCommand(uchar cmd,uchar chk)
{
if(chk)
WaitForEnable(); // 檢測忙信號?
CLR_RS;
CLR_RW;
_NOP();
DataPort=cmd; //將命令字寫入數(shù)據(jù)端口
_NOP();
SET_EN; //產(chǎn)生使能脈沖信號
_NOP();
_NOP();
CLR_EN;
}
void LcdWriteData(uchar data)
{
WaitForEnable(); //等待液晶不忙
SET_RS;
CLR_RW;
_NOP();
DataPort = data; //將顯示數(shù)據(jù)寫入數(shù)據(jù)端口
_NOP();
SET_EN; //產(chǎn)生使能脈沖信號
_NOP();
_NOP();
CLR_EN;
}
void WaitForEnable(void)
{
P4DIR&=0x00; //將P4口切換為輸入狀態(tài)
CLR_RS;
SET_RW;
_NOP();
SET_EN;
_NOP();
_NOP();
while((P4IN&Busy)!=0); //檢測忙標(biāo)志
CLR_EN;
P4DIR |= 0xFF; //將P4口切換為輸出狀態(tài)
}
void Delay5ms(void)
{
uint tmp=40000;
while (tmp!=0)
{
tmp--;
}
}
void Delay10ms(void)
{
uint tmp;
for(tmp=0x3fff;tmp>0;tmp--)
;
}
uchar Key4Scan(void)
{
uchar temp,keyval;
if(keyin!=0x0f)
{
Delay10ms();
keyval=0;
if(keyin!=0x0f)
{
temp=keyin;
while(keyin!=0x0f)
;
switch(temp)
{
case 0x0e:
keyval=1;
break;
case 0x0d:
keyval=2;
break;
case 0x0b:
keyval=3;
break;
case 0x07:
keyval=4;
break;
default:
keyval=0;
break;
}
}
}
else
keyval = 0;
return keyval;
}

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