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C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 1
C51 COMPILER V9.01, COMPILATION OF MODULE W
OBJECT MODULE PLACED IN w.OBJ
COMPILER INVOKED BY: e:\Keil\C51\BIN\C51.EXE w.c BROWSE DEBUG OBJECTEXTEND
line level source
1 #include
2 #define uint unsigned int
3 #define uchar unsigned char
4
5 sbit rs=P2^0; //数据\指令 选择
6 sbit rw=P2^1; //读/写 选择
7 sbit e=P2^2; //读/写 使能
8 sbit ds=P1^0; //18B20信号脚
9 uint temp;
10 float ftemp;
11 uchar code table[]="0123456789.CT:";
12
13 void writecom(uchar com); //写命令函数
14 void writedat(uchar dat); //写数据函数
15 void initinal(void);
16
17 void delay50us(uint t) //12MHZ晶振 延时50微秒
18 {
19 1 uchar j;
20 1 for(;t>0;t--)
21 1 for(j=19;j>0;j--);
22 1 }
23 void dsreset() //ds18b20初始化函数
24 {
25 1 uint i;
26 1 ds=0; //拉低总线开始复位
27 1 i=103;
28 1 while(i>0)i--;
29 1 ds=1; //释放总线
30 1 i=4;
31 1 while(i>0)i--; //省去了等待芯片返回应答的过程
32 1 }
33 bit readbit(void) //ds18b20读取一个二进制位,参照时序图
34 {
35 1 uint i;
36 1 bit dat;
37 1 ds=0;i++;
38 1 ds=1;i++,i++;
39 1 dat=ds;
40 1 i=8;while(i>0)i--;
41 1 return(dat);
42 1 }
43 uchar tempread(void) //ds18b20读取一个字节的数据
44 {
45 1 uchar i,j,dat;
46 1 dat=0;
47 1 for(i=0;i 48 1 {
49 2 j=readbit();
50 2 dat=(j1);
51 2 }
52 1 return(dat);
53 1 }
54 void tempwrite(uchar dat) //ds18b20写入字节数据
55 {
C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 2
56 1 uint i;uchar j;
57 1 bit testb;
58 1 for(j=1;j 59 1 {
60 2 testb=dat&0x01;
61 2 dat=dat>>1;
62 2 if(testb==1) //写1
63 2 {
64 3 ds=0; //拉低总线以开始一个写时序
65 3 i++;i++;
66 3 ds=1; //释放总线
67 3 i=8;
68 3 while(i>0) i--;
69 3 }
70 2 else //写0
71 2 {
72 3 ds=0;
73 3 i=8;
74 3 while(i>0)i--;
75 3 ds=1;
76 3 i++;i++;
77 3 }
78 2 }
79 1 }
80 void tempwendu(void) //转换温度
81 {
82 1 dsreset(); //ds18b20初始化函数
83 1 delay50us(20);
84 1 tempwrite(0xcc);
85 1 tempwrite(0x44);
86 1 }
87 uint gettemp() //获取温度
88 {
89 1 uchar a,b;
90 1 dsreset(); //ds18b20初始化函数
91 1 delay50us(2000); //延时100
92 1 tempwrite(0xcc);
93 1 tempwrite(0xbe);
94 1 delay50us(2);
95 1 a=tempread();
96 1 b=tempread();
97 1 temp=b;
98 1 temp 99 1 temp=temp|a;
100 1 ftemp=temp*0.0625;
101 1 temp=ftemp*10+0.5;
102 1 ftemp=ftemp+0.05;
103 1 return temp;
104 1 }
105 /****************LCD检查忙位*******************/
106 void chkbusy()
107 {
108 1 rs=0;
109 1 rw=1;
110 1 e=1;
111 1 P0=0xff;
112 1 while((P0&0x80)==0x80);
113 1 e=0;
114 1 }
115 /*****************读LCD数据******************/
116 uchar read()
117 {
C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 3
118 1 uchar shuju;
119 1 chkbusy();
120 1 P0=0xff;
121 1 rs=1;
122 1 rw=1;
123 1 e=0;
124 1 delay50us(1);
125 1 e=1;
126 1 shuju=P0;
127 1 e=0;
128 1 return(shuju);
129 1 }
130 /***********写命令**********/
131 void writecom(uchar com)
132 {
133 1 chkbusy();
134 1 rw=0;
135 1 rs=0;
136 1 delay50us(1);
137 1 P0=com;
138 1 e=1;
139 1 delay50us(10);
140 1 e=0;
141 1 delay50us(10);
142 1 }
143 /*************写数据****************/
144 void writedat(uchar dat)
145 {
146 1 chkbusy();
147 1 rw=0;
148 1 rs=1;
149 1 delay50us(1);
150 1 P0=dat;
151 1 e=1;
152 1 delay50us(10);
153 1 e=0;
154 1 delay50us(10);
155 1 }
156 /****************初始化12864*****************/
157 void initinal(void)
158 {
159 1 delay50us(1000);
160 1 writecom(0x30);
161 1 delay50us(4);
162 1 writecom(0x30);
163 1 delay50us(2);
164 1 writecom(0x0e);
165 1 delay50us(4);
166 1 writecom(0x01);
167 1 delay50us(400);
168 1 writecom(0x06);
169 1 delay50us(10);
170 1 }
171 /*************画点程序**************/
172 void DrawPoint(uchar X,uchar Y,uchar Color)
173 {
174 1 uchar Row,Tier,Tier_bit ;
175 1 uchar ReadOldH,ReadOldL ;
176 1 writecom(0x34); //扩充指令操作
177 1 writecom(0x36);
178 1 Tier=X>>4;
179 1 Tier_bit=X&0x0f;
C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 4
180 1 if(Y 181 1 {
182 2 Row=Y;
183 2 }
184 1 else
185 1 {
186 2 Row=Y-32;
187 2 Tier+=8;
188 2 }
189 1 writecom(Row+0x80);
190 1 writecom(Tier+0x80);
191 1 read();
192 1 ReadOldH=read();
193 1 ReadOldL=read();
194 1 writecom(Row+0x80);
195 1 writecom(Tier+0x80);
196 1 if(Tier_bit 197 1 {
198 2 switch(Color)
199 2 {
200 3 case 0 :ReadOldH&=(~(0x01 201 3 case 1 :ReadOldH|=(0x01 202 3 case 2 :ReadOldH^=(0x01 203 3 default : break;
204 3 }
205 2 writedat(ReadOldH);
206 2 writedat(ReadOldL);
207 2 }
208 1 else
209 1 {
210 2 switch(Color)
211 2 {
212 3 case 0 :ReadOldL&=(~(0x01 213 3 case 1 :ReadOldL|=(0x01 214 3 case 2 :ReadOldL^=(0x01 215 3 default : break;
216 3 }
217 2 writedat(ReadOldH);
218 2 writedat(ReadOldL);
219 2 }
220 1 writecom(0x30); //基本指令操作
221 1 }
222 /***************清屏函数*****************/
223 void clrscreen()
224 {
225 1 writecom(0x01);
226 1 delay50us(10);
227 1 }
228 /************清整个GDRAM空间***************/
229 void clrgdram()
230 {
231 1 unsigned char x,y ;
232 1 for(y=0;y 233 1 for(x=0;x 234 1 {
235 2 writecom(0x34);
236 2 writecom(y+0x80); //行地址
237 2 writecom(x+0x80); //列地址
238 2 writecom(0x30); //基本指令操作
239 2 writedat(0x00);
240 2 writedat(0x00);
241 2 }
C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 5
242 1 }
243 /*************主函数********************/
244 void main()
245 {
246 1 uchar i=0,j,e,colour=1;
247 1 uint a;
248 1 rw=0; //写
249 1 initinal(); //初始化12864
250 1 clrgdram(); //清整个GDRAM空间
251 1 delay50us(2);
252 1 //writecom(0x34); //扩充指令操作
253 1 writecom(0x0c);
254 1 while(1)
255 1 {
256 2 uint a,b,c,d;
257 2 DrawPoint(17,6,colour);
258 2 DrawPoint(17,22,colour);
259 2 DrawPoint(17,38,colour);
260 2 DrawPoint(17,54,colour);
261 2 for(j=16;j 262 2 {
263 3 DrawPoint(16,j-16,colour);
264 3 DrawPoint(j,63,colour);
265 3 writecom(0x80);
266 3 writedat(table[6]);
267 3 writedat(table[7]);
268 3 writecom(0x90);
269 3 writedat(table[5]);
270 3 writedat(table[1]);
271 3 writecom(0x88);
272 3 writedat(table[3]);
273 3 writedat(table[5]);
274 3 writecom(0x98);
275 3 writedat(table[1]);
276 3 writedat(table[9]);
277 3 }
278 2 for(i=16;i 279 2 {
280 3 tempwendu(); //转换温度
281 3 a=gettemp(); //获取温度
282 3 e=73-a/10;
283 3 DrawPoint(i,e,colour);
284 3 delay50us(10000);
285 3 b=a/100;
286 3 c=a%100/10;
287 3 d=a%100%10;
288 3 writecom(0x82); //写地址
289 3 writedat(table[12]);
290 3 delay50us(1);
291 3 writedat(table[13]);
292 3 delay50us(1);
293 3 writecom(0x83); //写地址
294 3 writedat(table[b]);
295 3 delay50us(1);
296 3 writedat(table[c]);
297 3 delay50us(1);
298 3 writedat(table[10]);
299 3 delay50us(1);
300 3 writedat(table[d]);
301 3 delay50us(1);
302 3 writedat(table[11]);
303 3 delay50us(4);
C51 COMPILER V9.01 W 06/23/2011 09:59:30 PAGE 6
304 3 }
305 2 clrgdram(); //清整个GDRAM空间
306 2 }
307 1
308 1 }
*** WARNING C280 IN LINE 247 OF W.C: 'a': unreferenced local variable
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 1191 ----
CONSTANT SIZE = 15 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 6 17
IDATA SIZE = ---- ----
BIT SIZE = ---- 2
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 1 WARNING(S), 0 ERROR(S)