📄 脉宽测量.lst
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C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE 脉宽测量
OBJECT MODULE PLACED IN 脉宽测量.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE 脉宽测量.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 /*
2 SMC1602A(16*2)模拟口线接线方式
3 连接线图:
4 ---------------------------------------------------
5 |LCM-----51 | LCM-----51 | LCM------51 |
6 --------------------------------------------------|
7 |DB0-----P1.0 | DB4-----P1.4 | RW-------P3.4 |
8 |DB1-----P1.1 | DB5-----P1.5 | RS-------P3.3 |
9 |DB2-----P1.2 | DB6-----P1.6 | E--------P3.5 |
10 |DB3-----P1.3 | DB7-----P1.7 | VLCD接1K电阻到GND|
11 ---------------------------------------------------
12 接线：模块TRIG接 P3.7 ECH0 接P3.6
13
14 本程序源码只供学习参考，不得应用于商业用途，如有需要请联系作者。
15
16 [注:stc89c52使用12M或11.0592M晶振,实测使用11.0592M]
17 =============================================================*/
18 #include <AT89x51.H> //器件配置文件
19 #include <intrins.h>
20 #define RX P3_6
21 #define TX P3_7
22
23 #define LCM_RW P2_3 //定义LCD引脚
24 #define LCM_RS P2_4
25 #define LCM_E P2_2
26 #define LCM_Data P1
27
28 #define Key_Data P3_3 //定义Keyboard引脚
29 #define Key_CLK P3_2
30
31 #define Busy 0x80 //用于检测LCM状态字中的Busy标识
32
33 void LCMInit(void);
34 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
35 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
36 void Delay5Ms(void);
37 void Delay400Ms(void);
38 void Decode(unsigned char ScanCode);
39 void WriteDataLCM(unsigned char WDLCM);
40 void WriteCommandLCM(unsigned char WCLCM,BuysC);
41
42 unsigned char ReadDataLCM(void);
43 unsigned char ReadStatusLCM(void);
44 unsigned char code mcustudio[] ={"==Range Finder=="};
45 unsigned char code email[] = {"heyaodz@163.com "};
46 unsigned char code Cls[] = {" "};
47 unsigned char code ASCII[15] = {'0','1','2','3','4','5','6','7','8','9','.','-','M'};
48
49 static unsigned char DisNum = 0; //显示用指针
50 unsigned int time=0;
51 unsigned long S=0;
52 bit flag =0;
53 unsigned char disbuff[4] ={ 0,0,0,0,};
54
55
C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 2
56 //写数据
57 void WriteDataLCM(unsigned char WDLCM)
58 {
59 1 ReadStatusLCM(); //检测忙
60 1 LCM_Data = WDLCM;
61 1 LCM_RS = 1;
62 1 LCM_RW = 0;
63 1 LCM_E = 0; //若晶振速度太高可以在这后加小的延时
64 1 LCM_E = 0; //延时
65 1 LCM_E = 1;
66 1 }
67
68 //写指令
69 void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
70 {
71 1 if (BuysC) ReadStatusLCM(); //根据需要检测忙
72 1 LCM_Data = WCLCM;
73 1 LCM_RS = 0;
74 1 LCM_RW = 0;
75 1 LCM_E = 0;
76 1 LCM_E = 0;
77 1 LCM_E = 1;
78 1 }
79
80 //读数据
81 unsigned char ReadDataLCM(void)
82 {
83 1 LCM_RS = 1;
84 1 LCM_RW = 1;
85 1 LCM_E = 0;
86 1 LCM_E = 0;
87 1 LCM_E = 1;
88 1 return(LCM_Data);
89 1 }
90
91 //读状态
92 unsigned char ReadStatusLCM(void)
93 {
94 1 LCM_Data = 0xFF;
95 1 LCM_RS = 0;
96 1 LCM_RW = 1;
97 1 LCM_E = 0;
98 1 LCM_E = 0;
99 1 LCM_E = 1;
100 1 while (LCM_Data & Busy); //检测忙信号
101 1 return(LCM_Data);
102 1 }
103
104 void LCMInit(void) //LCM初始化
105 {
106 1 LCM_Data = 0;
107 1 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
108 1 Delay5Ms();
109 1 WriteCommandLCM(0x38,0);
110 1 Delay5Ms();
111 1 WriteCommandLCM(0x38,0);
112 1 Delay5Ms();
113 1
114 1 WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
115 1 WriteCommandLCM(0x08,1); //关闭显示
116 1 WriteCommandLCM(0x01,1); //显示清屏
117 1 WriteCommandLCM(0x06,1); // 显示光标移动设置
C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 3
118 1 WriteCommandLCM(0x0F,1); // 显示开及光标设置
119 1 }
120
121 //按指定位置显示一个字符
122 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
123 {
124 1 Y &= 0x1;
125 1 X &= 0xF; //限制X不能大于15，Y不能大于1
126 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
127 1 X |= 0x80; //算出指令码
128 1 WriteCommandLCM(X, 1); //发命令字
129 1 WriteDataLCM(DData); //发数据
130 1 }
131
132 //按指定位置显示一串字符
133 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
134 {
135 1 unsigned char ListLength;
136 1
137 1 ListLength = 0;
138 1 Y &= 0x1;
139 1 X &= 0xF; //限制X不能大于15，Y不能大于1
140 1 while (DData[ListLength]>0x19) //若到达字串尾则退出
141 1 {
142 2 if (X <= 0xF) //X坐标应小于0xF
143 2 {
144 3 DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
145 3 ListLength++;
146 3 X++;
147 3 }
148 2 }
149 1 }
150
151 //5ms延时
152 void Delay5Ms(void)
153 {
154 1 unsigned int TempCyc = 5552;
155 1 while(TempCyc--);
156 1 }
157
158 //400ms延时
159 void Delay400Ms(void)
160 {
161 1 unsigned char TempCycA = 5;
162 1 unsigned int TempCycB;
163 1 while(TempCycA--)
164 1 {
165 2 TempCycB=7269;
166 2 while(TempCycB--);
167 2 };
168 1 }
169 /********************************************************/
170 void Conut(void)
171 {
172 1 time=TH0*256+TL0;
173 1 TH0=0;
174 1 TL0=0;
175 1
176 1 S=(time*1.8)/10; //算出来是CM
177 1 if((S>=7000)||flag==1) //超出测量范围显示“-”
178 1 {
179 2 flag=0;
C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 4
180 2
181 2 DisplayOneChar(0, 1, ASCII[11]);
182 2 DisplayOneChar(1, 1, ASCII[10]); //显示点
183 2 DisplayOneChar(2, 1, ASCII[11]);
184 2 DisplayOneChar(3, 1, ASCII[11]);
185 2 DisplayOneChar(4, 1, ASCII[11]);
186 2 DisplayOneChar(5, 1, ASCII[12]); //显示M
187 2 }
188 1 else
189 1 {
190 2 disbuff[0]=S/1000;
191 2 disbuff[1]=S/100%10;
192 2 disbuff[2]=S/10%10;
193 2 disbuff[3]=S%10;
194 2 DisplayOneChar(0, 1, ASCII[disbuff[0]]);
195 2 DisplayOneChar(1, 1, ASCII[10]); //显示点
196 2 DisplayOneChar(2, 1, ASCII[disbuff[1]]);
197 2 DisplayOneChar(3, 1, ASCII[disbuff[2]]);
198 2 DisplayOneChar(4, 1, ASCII[disbuff[3]]);
199 2 DisplayOneChar(5, 1, ASCII[12]); //显示M
200 2 }
201 1 }
202 /********************************************************/
203 void zd0() interrupt 1 //T0中断用来计数器溢出,超过测距范围
204 {
205 1 flag=1; //中断溢出标志
206 1 RX=0;
207 1 }
208 /********************************************************/
209 void StartModule() //启动模块
210 {
211 1 TX=1; //启动一次模块
212 1 _nop_();
213 1 _nop_();
214 1 _nop_();
215 1 _nop_();
216 1 _nop_();
217 1 _nop_();
218 1 _nop_();
219 1 _nop_();
220 1 _nop_();
221 1 _nop_();
222 1 _nop_();
223 1 _nop_();
224 1 _nop_();
225 1 _nop_();
226 1 _nop_();
227 1 _nop_();
228 1 _nop_();
229 1 _nop_();
230 1 _nop_();
231 1 _nop_();
232 1 _nop_();
233 1 TX=0;
234 1 }
235 void Timer_Count(void)
236 {
237 1 TR0=1; //开启计数
238 1 while(RX); //当RX为1计数并等待
239 1 TR0=0; //关闭计数
240 1 Conut(); //计算
241 1
C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 5
242 1 }
243
244 /********************************************************/
245 void delayms(unsigned int ms)
246 {
247 1 unsigned char i=100,j;
248 1 for(;ms;ms--)
249 1 {
250 2 while(--i)
251 2 {
252 3 j=10;
253 3 while(--j);
254 3 }
255 2 }
256 1 }
257 /*********************************************************/
258 void main(void)
259 {
260 1 unsigned int valA;
261 1 unsigned char TempCyc;
262 1 Delay400Ms(); //启动等待，等LCM讲入工作状态
263 1 LCMInit(); //LCM初始化
264 1 Delay5Ms(); //延时片刻(可不要)
265 1 DisplayListChar(0, 0, mcustudio);
266 1 DisplayListChar(0, 1, email);
267 1 ReadDataLCM();//测试用句无意义
268 1 for (TempCyc=0; TempCyc<10; TempCyc++)
269 1 Delay400Ms(); //延时
270 1 DisplayListChar(0, 1, Cls);
271 1 TMOD=0x01; //设T0为方式1，GATE=1；
272 1 TH0=0;
273 1 TL0=0;
274 1 ET0=1; //允许T0中断
275 1 EA=1; //开启总中断
276 1
277 1 while(1)
278 1 {
279 2
280 2 delayms(60);
281 2 RX=1;
282 2 StartModule();
283 2 for(valA=7510;valA>0;valA--)
284 2 {
285 3
286 3 if(RX==1)
287 3 {
288 4 Timer_Count();
289 4 }
290 3 }
291 2 }
292 1 }
293
294
295
296
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 770 ----
CONSTANT SIZE = 66 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
C51 COMPILER V7.06 脉宽测量 06/14/2011 01:56:38 PAGE 6
DATA SIZE = 11 10
IDATA SIZE = ---- ----
BIT SIZE = 1 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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