test_f1.rar_C51频率计_频率计

#include "REG8051.h" unsigned char code coding[10][2]= {{0xB0,0x0E},{0x00,0x06},{0x70,0x0C},{0x50,0x0E},{0xC0,0x06},{0xD0,0x0A},{0xF0,0x0A},{0,0x0E},{0xF0,0x0E},{0xD0,0x0E}}; unsigned char code coding1[10][2]={{0x70,0x0D},{0x60,0} ,{0x30,0x0E},{0x70,0x0A},{0x60,0x03},{0x50,0x0B},{0x50,0x0F},{0x70,0},{0x70,0x0F},{0x70,0x0B}}; unsigned char code PLACE_code[20][2]={{0xC0,0xFF}, {0xC0,0xC1},{0xC1,0xC2},{0xC2,0xC3},{0xC3,0xC4}, {0xC4,0xC5},{0xC5,0xC6},{0xC6,0xC7},{0xC7,0xC8}, {0xC8,0xFF}, {0xC9,0xFF}, {0xC9,0xCA},{0xCA,0xCB},{0xCB,0xCC},{0xCC,0xCD}, {0xCD,0xCE},{0xCE,0xCF},{0xCF,0xB9},{0xB9,0xBA}, {0xBA,0xFF}}; void LCDcls(void) { char data * cp; unsigned char i; cp=0xC0; for(i=0;i<16;i++)*cp++=0; cp=0xB9; *cp++=0; *cp=0; LCDCON=0xFB; /* DISP=0; Open LCD; 11.0592M/2096/16--Frame Frequence 330Hz */ } void LCDdisplay(unsigned char place,unsigned char value,bit point) /**************************************************************** * * lable4 led16 led15 led14 led13 led12 led11 led10 led9 label3 * 19 18 17 16 15 14 13 12 11 10 * * * 0 1 2 3 4 5 6 7 8 9 * label1 led1 led2 led3 led4 led5 led6 led7 led8 label2 * * * point 表示小数点 1表示有，0表示无 ****************************************************************/ { char data * cp; if((place==0)||(place==10)) { cp=(unsigned char *)PLACE_code[place][0]; *cp |= (value&0x0F); } else if((place==9)||(place==19)) { cp=(unsigned char *)PLACE_code[place][0]; *cp |= (value&0xF0); } else if((place>0)&&(place<9)) { cp=(unsigned char *)PLACE_code[place][0]; *cp |= coding[value][0]; cp=(unsigned char *)PLACE_code[place][1]; *cp |= coding[value][1]; if(point)*cp |= 0x01; } else if((place>10)&&(place<19)) { cp=(unsigned char *)PLACE_code[place][0]; *cp |= coding1[value][0]; if(!point) *cp &=0x7F; cp=(unsigned char *)PLACE_code[place][1]; *cp |= coding1[value][1]; } cp=(unsigned char *)PLACE_code[19][0]; *cp|=0x10; } LCDdisplayLED(unsigned char place,unsigned char value,bit point) { if((place>0)&&(place<9)) LCDdisplay(place,value,point); if((place>8)&&(place<17))LCDdisplay(place+2,value,point); LCDdisplay(10,0x80,0); LCDCON=0xFB; } LCDdisplayMARK(unsigned char tmp) { switch(tmp) { case 0: // LCDdisplay(0,0x01,0); break; case 1: // LCDdisplay(0,0x02,0); break; case 2: // LCDdisplay(0,0x04,0); break; case 3: // LCDdisplay(0,0x08,0); break; case 4: // LCDdisplay(9,0x10,0); break; case 5: // LCDdisplay(9,0x20,0); break; case 6: // LCDdisplay(9,0x40,0); break; case 7: // LCDdisplay(9,0x80,0); break; case 8: // LCDdisplay(10,0x01,0); break; case 9: // LCDdisplay(10,0x02,0); break; case 10: // LCDdisplay(10,0x04,0); break; case 11: // LCDdisplay(10,0x08,0); break; case 12: // LCDDATA9 |=0x80; //显示圆周率 break; case 13: // LCDdisplay(19,0x10,0); break; case 14: // LCDdisplay(19,0x20,0); break; case 15: // LCDdisplay(19,0x40,0); break; case 16: // LCDdisplay(19,0x80,0); break; } LCDCON=0xFB; } void LCDtest(void) { unsigned char i; for(i=1;i<17;i++) { LCDdisplayLED(i,i%10,0); } LCDCON=0xFB; } void LED5_6_7(unsigned char place,bit light) { PCR0=0xFF; //设置I/O口为写状态 switch(place) { case 5: if(light) P0 |= 0x20; else P0 &=0xDF; break; case 6: if(light) P0 |= 0x40; else P0 &=0xBF; break; case 7: if(light) P0 |= 0x80; else P0 &=0x7F; break; } }