60秒定时器

实验五、60秒定时器

P2驱动两位数7段ＬＥＤ数码管模块，而Ｐ１．０与Ｐ１．１为两位数７段ＬＥＤ数码管模块的扫描信号。在此将利用Ｔｉｍｅｒ ０作为定时装置，两个７段ＬＥＤ数码管从５９开始显示，每一秒减１，到达００后，再从５９开始，也就是６０ｓ的定时器。

U?19XTAL1P0.0/AD0P0.1/AD1P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9P2.2/A10P2.3/A11P2.4/A12P2.5/A13P2.6/A14P2.7/A15P3.0/RXDP3.1/TXDP3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P3.6/WRP3.7/RD39383736353433322122232425262728101112131415161718XTAL29RST293031PSENALEEA12345678P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7ATC51 //========60秒==定时器======= #include #define SEG P2 #define SCANP P1

#define count_M1 50000

#define TH_M1 (65636-count_M1)/256 #define TL_M1 (65636-count_M1)%256 int count_T0;

#define count_M2 250

#define TH_M2 (256-count_M2) #define TL_M2 (256-count_M2) char count_T1=0;

char TAB[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; char disp[2]={0x92,0x90};

char seconds=59;

char scan=0;

main() { IE=0x8a; }

TMOD=0x21;

TH0=TH_M1;TL0=TL_M1; TR0=1;

TH1=TH_M2;TL1=TL_M2; TR1=1; while(1);

void T0_1s(void)interrupt 1 { }

TH0=TH_M1;TL0=TL_M1; if(++count_T0==20) { count_T0=0;

seconds--;

if(seconds==0) seconds=59;

}

disp[0]=TAB[seconds/10]; disp[1]=TAB[seconds%10];

void T1_8ms(void)interrupt 3 { }

if(++count_T1==32) { }

count_T1=0;

if(++scan==3)scan=1; SEG=0xff;

SCANP=~scan; SEG=disp[scan-1];

U?19XTAL1P0.0/AD0P0.1/AD1P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9P2.2/A10P2.3/A11P2.4/A12P2.5/A13P2.6/A14P2.7/A15P3.0/RXDP3.1/TXDP3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P3.6/WRP3.7/RD39383736353433322122232425262728101112131415161718XTAL29RST293031PSENALEEA12345678P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7ATC51 U?19XTAL1P0.0/AD0P0.1/AD1P0.2/AD2P0.3/AD3P0.4/AD4P0.5/AD5P0.6/AD6P0.7/AD7P2.0/A8P2.1/A9P2.2/A10P2.3/A11P2.4/A12P2.5/A13P2.6/A14P2.7/A15P3.0/RXDP3.1/TXDP3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P3.6/WRP3.7/RD39383736353433322122232425262728101112131415161718XTAL29RST293031PSENALEEA12345678P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7ATC51