lesson4_1.lst

天祥的所有pic 源程序

     1: #include<pic.h>
     2: #define uchar unsigned char
     3: #define uint  unsigned int
     4: __CONFIG(0x3B31);
     5: const uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
     6:                         0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
     7: uchar key_num;
     8: void delay(uint x);
     9: void init();
    10: void scan();
    11: void didi(uchar num);
    12: void disp();
    13: void main()
    14: {
    15:         init();
    16:         while(1)
    17:         {
    18:                 scan();
    19:                 disp();
    20:         }       
    21: }
    22: void delay(uint x)
    23: {
    24:         uint a,b;
    25:         for(a=x;a>0;a--)
    26:                 for(b=110;b>0;b--);
    27: }
    28: void init()
    29: {
    30:         TRISB=0x0f;
    31:         TRISD=0;
    32:         TRISA=0;
    33:         TRISE0=0;
    34:         RE0=0;
    35:         PORTD=0;
    36:         PORTA=0xff;
    37: }
    38: void scan()
    39: {
    40:         uchar key_tem;
    41:         PORTB=0x7f;//0111 1111
    42:         key_num=PORTB;
    43:         key_num=key_num&0x0f;
    44:         if(key_num!=0x0f)
    45:         {
    46:                 delay(10);
    47:                 key_num=PORTB;
    48:                 key_num=key_num&0x0f;
    49:                 if(key_num!=0x0f)
    50:                 {
    51:                         key_tem=key_num;
    52:                         didi(1);
    53:                         while(key_tem!=0x0f)
    54:                         {
    55:                                 key_tem=PORTB;
    56:                                 key_tem=key_tem&0x0f;
    57:                         }       
    58:                         key_num=key_num|0x70;
    59:                 }
    60:         }
    61:         else
    62:         {
    63:                 PORTB=0xBf;//1011 1111
    64:                 key_num=PORTB;
    65:                 key_num=key_num&0x0f;
    66:                 if(key_num!=0x0f)
    67:                 {
    68:                         delay(10);
    69:                         key_num=PORTB;
    70:                         key_num=key_num&0x0f;
    71:                         if(key_num!=0x0f)
    72:                         {
    73:                                 key_tem=key_num;
    74:                                 didi(1);
    75:                                 while(key_tem!=0x0f)
    76:                                 {
    77:                                         key_tem=PORTB;
    78:                                         key_tem=key_tem&0x0f;
    79:                                 }       
    80:                                 key_num=key_num|0xb0;
    81:                         }
    82:                 }
    83:                 else
    84:                 {
    85:                         PORTB=0xdf;//1101 1111
    86:                         key_num=PORTB;
    87:                         key_num=key_num&0x0f;
    88:                         if(key_num!=0x0f)
    89:                         {
    90:                                 delay(10);
    91:                                 key_num=PORTB;
    92:                                 key_num=key_num&0x0f;
    93:                                 if(key_num!=0x0f)
    94:                                 {
    95:                                         key_tem=key_num;
    96:                                         didi(1);
    97:                                         while(key_tem!=0x0f)
    98:                                         {
    99:                                                 key_tem=PORTB;
   100:                                                 key_tem=key_tem&0x0f;
   101:                                         }       
   102:                                         key_num=key_num|0xd0;
   103:                                 }
   104:                         }
   105:                         else
   106:                         {
   107:                                 PORTB=0xef;//1011 1111
   108:                                 key_num=PORTB;
   109:                                 key_num=key_num&0x0f;
   110:                                 if(key_num!=0x0f)
   111:                                 {
   112:                                         delay(10);
   113:                                         key_num=PORTB;
   114:                                         key_num=key_num&0x0f;
   115:                                         if(key_num!=0x0f)
   116:                                         {
   117:                                                 key_tem=key_num;
   118:                                                 didi(1);
   119:                                                 while(key_tem!=0x0f)
   120:                                                 {
   121:                                                         key_tem=PORTB;
   122:                                                         key_tem=key_tem&0x0f;
   123:                                                 }       
   124:                                                 key_num=key_num|0xe0;
   125:                                         }
   126:                                 }
   127:                         }       
   128:                 }               
   129:         }
   130: }
   131: void disp()
   132: {
   133:         switch(key_num)
   134:         {
   135:                 case 0xee:PORTD=table[0];break;//1110
   136:                 case 0xed:PORTD=table[1];break;//1101
   137:                 case 0xeb:PORTD=table[2];break;//1011
   138:                 case 0xe7:PORTD=table[3];break;//0111
   139:                 case 0xde:PORTD=table[4];break;
   140:                 case 0xdd:PORTD=table[5];break;
   141:                 case 0xdb:PORTD=table[6];break;
   142:                 case 0xd7:PORTD=table[7];break;
   143:                 case 0xbe:PORTD=table[8];break;
   144:                 case 0xbd:PORTD=table[9];break;
   145:                 case 0xbb:PORTD=table[10];break;
   146:                 case 0xb7:PORTD=table[11];break;
   147:                 case 0x7e:PORTD=table[12];break;
   148:                 case 0x7d:PORTD=table[13];break;
   149:                 case 0x7b:PORTD=table[14];break;
   150:                 case 0x77:PORTD=table[15];break;
   151:         }
   152: }
   153: 
   154: void didi(uchar num)
   155: {
   156:         uchar di_num;
   157:         for(di_num=num;di_num>0;di_num--)
   158:         {
   159:                 RE0=1;
   160:                 delay(50);
   161:                 RE0=0;
   162:                 delay(20);
   163:         }
   164: }