用1602模拟电子钟功能

实现一个简单的电子钟功能，按S1键可选择调整时、分、秒，s2上调，s3下调

未实现调整日期功能

2

3 /*

4 li 8/17/2010

5 */

6 #include

7 #define uint unsigned int

8 #define uchar unsigned char

9 sbit lcden=P3^4;

10 sbit lcdrs=P3^5;

11 sbit dula=P2^6;

12 sbit wela=P2^7;

13

14 sbit s1=P3^0;

15 sbit s2=P3^1;

16 sbit s3=P3^2;

17 sbit vss=P3^7;

18 uchar timeNum,i,Number,keyNum; //timeNum定时器计数，i For循环计数 Number时间临时变量 keyNum显示指针位置

19 char shi,fen,miao;

20 uchar code date[]="2010-08-17";

21 uchar code time[]="00:00:00";

22 //初始化

23 void init()

24 {

25 TMOD=0x01;

26 TH0=0xEE;

27 TL0=0x00;

28 ET0=1;

29 EA=1;

30 TR0=1;

31 dula=0;

32 wela=0;

33 }

34

35 //定时器

36 void timer() interrupt 1

37 {

38 TH0=0xEE;

39 TL0=0x00;

40 timeNum++;

41 }

42

43 //简单延时

44 void delay(uchar x)

45 {

46 uchar i;

47 while (x--)

48 for (i=0;i<110;i++);

49 }

50

51 //写命令

52 void write_com(uchar com)

53 {

54 lcdrs=0;

55 P0=com;

56 delay(1);

57 lcden=1;

58 lcden=0;

59 }

60

61 //写数据

62 void write_data(uchar date)

63 {

64 lcdrs=1;

65 P0=date;

66 delay(1);

67 lcden=1;

68 lcden=0;

69 }

70

71 //拆分十位和各位并显示

72 void sfm(uchar add,uchar Num)

73 {

74 uchar shi,ge;

75 shi=Num/10;

76 ge=Num%10;

77 write_com(0x80+0x40+add);

78 write_data(0x30+shi);

79 write_data(0x30+ge);

80 }

81

82 //1602初始化显示

83 void display()

84 {

85 write_com(0x38);

86 write_com(0x0C);

87 write_com(0x06);

88 write_com(0x01);

89 write_com(0x80);

90 for (i=0;i<10;i++)

91 {

92 write_data(date[i]);

93 }

94 write_com(0x80+0x40);

95 for (i=0;i<8;i++)

96 {

97 write_data(time[i]);

98 }

99 }

100

101 //扫描键盘

102 void keysacn()

103 {

104 vss=0;

105 if (s1==0)

106 {

107 delay(5);

108 if (s1==0)

109 {

110 keyNum++;

111 while (!s1);

112 write_com(0x0F);

113 TR0=0;

114 }

115 switch (keyNum)

116 {

117 case 1:

118 write_com(0x80+0x40+7);

119 break;

120 case 2:

121 write_com(0x80+0x40+4);

122 break;

123 case 3:

124 write_com(0x80+0x40+1);

125 break;

126 case 4:

127 keyNum=0;

128 write_com(0x0C);

129 TR0=1;

130 break;

131 }

132 }

133 if(keyNum!=0)

134 {

135 if(s2==0)

136 {

137 delay(5);

138 if (s2==0)

139 {

140 while(!s2);

141 switch (keyNum)

142 {

143 case 1:

144 miao++;

145 if(miao==60)

146 miao=0;

147 sfm(6,miao);

148 write_com(0x80+0x40+7);

149 break;

150 case 2:

151 fen++;

152 if(fen==60)

153 fen=0;

154 sfm(3,fen);

155 write_com(0x80+0x40+4);

156 break;

157 case 3:

158 shi++;

159 if(shi==24)

160 shi=0;

161 sfm(0,shi);

162 write_com(0x80+0x40+1);

163 break;

164 }

165 }

166 }

167 if(s3==0)

168 {

169 delay(5);

170 if (s3==0)

171 {

172 while(!s3);

173 switch (keyNum)

174 {

175 case 1:

176 miao--;

177 if(miao==-1)

178 miao=59;

179 sfm(6,miao);

180 write_com(0x80+0x40+7);

181 break;

182 case 2:

183 fen--;

184 if(fen==-1)

185 fen=59;

186 sfm(3,fen);

187 write_com(0x80+0x40+4);

188 break;

189 case 3:

190 shi--;

191 if(shi==-1)

192 shi=23;

193 sfm(0,shi);

194 write_com(0x80+0x40+1);

195 break;

196 }

197 }

198 }

199 }

200 }

201 void main()

202 {

203 init();

204 display();

205 while (1)

206 {

207 if (timeNum==200)

208 {

209 timeNum=0;

210 miao++;

211 if (miao==60)

212 {

213 miao=0;

214 fen++;

215 if (fen==60)

216 {

217 fen=0;

218 shi++;

219 if (shi==24)

220