|
|
- #include<reg51.h>
- #include<intrins.h>
- typedef unsigned int u16;
- typedef unsigned char u8;
- sbit SRCLK=P3^6;
- sbit RCLK=P3^5;
- sbit SER=P3^4;
- #define GPIO_KEY P1
- #define COMMONPORTS P0
- sbit LSA=P2^2;
- sbit LSB=P2^3;
- sbit LSC=P2^4;
- u8 code TAB[8] = {0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
- u8 code CHARCODE[18][8]=
- {
- {0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00}, //0
- {0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00}, //1
- {0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00}, //2
- {0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00}, //3
- {0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00}, //4
- {0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00}, //5
- {0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00}, //6
- {0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00}, //7
- {0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00}, //8
- {0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00}, //9
- {0x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00}, //P
- {0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00}, //R
- {0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00}, //E
- {0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00}, //C
- {0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00}, //H
- {0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00}, //I
- {0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00}, //N
- {0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00} // ?
- };
- void delay(u16 time)
- {
- u16 i,j;
- for(i=0;i<time;i++)
- for(j=0;j<121;j++);
- }
- void Hc595SendByte(u8 dat)
- {
- u8 a;
- SRCLK=0;
- RCLK=0;
- for(a=0;a<8;a++)
- {
- SER=dat>>7;
- dat<<=1;
- SRCLK=1;
- _nop_();
- _nop_();
- SRCLK=0;
- }
- RCLK=1;
- _nop_();
- _nop_();
- RCLK=0;
- }
- void InterruptTimer0 () interrupt 1
- {
- unsigned char i = 0;
- static unsigned char KeyBuf[4]={
- 0xFF,0xFF,0xFF,0xFF
- };
- TH0 = 0xFC;
- TL0 = 0x67;
- KeyBuf [0] = (KeyBuf[0]<<1)|KEY_IN_1;
- KeyBuf [1] = (KeyBuf[1]<<1)|KEY_IN_2;
- KeyBuf [2] = (KeyBuf[2]<<1)|KEY_IN_3;
- KeyBuf [3] = (KeyBuf[3]<<1)|KEY_IN_4;
- for (i=0; i<4; i++)
- {
- if ((KeyBuf[i]&0x0F) == 0x00)
- {
- KeySta[i] = 0;
- }
- else if ((KeyBuf[i]&0x0F) == 0x0F)
- {
- KeySta[i] = 1;
- }
- }
- }
- void main()
- {
- while(1)
- {
- for (i=0; i<4; i++)
- {
- if (backup [i] != KeySta [i])
- {
- if(backup [i] != 0)
- {
- if(KeySta[0]==0)
- {
- TR1 = 0;
- ENLED = 0;
- ADDR3 = 1;
- ADDR2 = 0;
- ADDR1 = 0;
- ADDR0 = 0;
- if (KeySta[0]==0)
- {
- P0 = LedChar[cnt];
- cnt++;
- if(cnt >= 10)
- cnt = 0;
- }
- }
- }
- }
- }
- }
- }
|
|
