📄 24c08.lst
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C51 COMPILER V7.06 24C08 07/28/2007 21:27:44 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE 24C08
OBJECT MODULE PLACED IN 24c08.OBJ
COMPILER INVOKED BY: E:\单片机\kcai\安装后\C51\BIN\C51.EXE 24c08.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 #include <reg52.h>
2 #include <intrins.h>
3
4 #define uchar unsigned char
5 #define uint unsigned int
6
7 #define OP_WRITE 0xa0 // 器件地址以及写入操作
8 #define OP_READ 0xa1 // 器件地址以及读取操作
9
10 /*uchar code display[72]={
11 0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F,
12 0xBF,0xDF,0xEF,0xF7,0xFB,0xFD,0xFE,0xFF,
13 0xFE,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x00,
14 0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFE,0xFF,
15 0xFC,0xF9,0xF3,0xE7,0xCF,0x9F,0x3F,
16 0x9F,0xCF,0xE7,0xF3,0xF9,0xFC,0xFF,
17 0xE7,0xDB,0xBD,0x7E,0xBD,0xDB,0xE7,0xFF,
18 0xE7,0xC3,0x81,0x00,0x81,0xC3,0xE7,0xFF,
19 0xAA,0x55,0x18,0xFF,0xF0,0x0F,
20 0x00,0xFF,0x00,0xFF };*/
21
22 sbit SDA = P3^4;
23 sbit SCL = P3^3;
24 uchar i=1,j=0xfe;
25
26 void start();
27 void stop();
28 uchar shin();
29 bit shout(uchar write_data);
30 void write_byte( uchar addr, uchar write_data);
31 void fill_byte(uchar fill_size,uchar fill_data);
32 void delayms(uint ms);
33 uchar read_current();
34 uchar read_random(uchar random_addr);
35
36 #define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
37
38 /**********************************************************/
39 void int0(void) interrupt 0
40 {
41 1 write_byte(i,j);
42 1 delayms(1);//必须加延时
43 1 P0=read_random(i);
44 1 i++;
45 1 j=(j<<1)|0x01;
46 1 if(j==0xff){i=0;j=0xfe;}
47 1 }
48 main(void)
49 {
50 1 //uchar i;
51 1 SDA = 1;
52 1 SCL = 1;
53 1 /* fill_byte(72,0xff); // 将前72字节填充0xff
54 1
55 1 for(i = 0 ; i < 72; i++) //写入显示代码到AT24C02
C51 COMPILER V7.06 24C08 07/28/2007 21:27:44 PAGE 2
56 1 {
57 1 write_byte(i,display[i]);
58 1 }
59 1 for(i =0 ;i <72 ; i++) //从AT24C02移出数据送到P0口显示
60 1 {
61 1 P0 = read_random(i);
62 1 delayms(350);
63 1 }
64 1 }
65 1 */
66 1 fill_byte(16,0xff);
67 1 EA=1;
68 1 EX0=1;
69 1 IT0=1;
70 1 //P0=0x01;
71 1 while(1);
72 1 }
73 /**********************************************************/
74 void start()
75 //开始位
76 {
77 1 SDA = 1;
78 1 SCL = 1;
79 1 delayNOP();
80 1 SDA = 0;
81 1 delayNOP();
82 1 SCL = 0;
83 1 }
84
85 /**********************************************************/
86 void stop()
87 // 停止位
88 {
89 1 SDA = 0;
90 1 delayNOP();
91 1 SCL = 1;
92 1 delayNOP();
93 1 SDA = 1;
94 1 }
95
96 /**********************************************************/
97 uchar shin()
98 // 从AT24C02移出数据到MCU
99 {
100 1 uchar i,read_data;
101 1 for(i = 0; i < 8; i++)
102 1 {
103 2 SCL = 1;
104 2 read_data <<= 1;
105 2 read_data |= SDA;
106 2 SCL = 0;
107 2 }
108 1 return(read_data);
109 1 }
110
111 /**********************************************************/
112 bit shout(uchar write_data)
113 // 从MCU移出数据到AT24C02
114 {
115 1 uchar i;
116 1 bit ack_bit;
117 1 for(i = 0; i < 8; i++) // 循环移入8个位
C51 COMPILER V7.06 24C08 07/28/2007 21:27:44 PAGE 3
118 1 {
119 2 SDA = (bit)(write_data & 0x80);
120 2 _nop_();
121 2 SCL = 1;
122 2 delayNOP();
123 2 SCL = 0;
124 2 write_data <<= 1;
125 2 }
126 1 SDA = 1; // 读取应答
127 1 delayNOP();
128 1 SCL = 1;
129 1 delayNOP();
130 1 ack_bit = SDA;
131 1 SCL = 0;
132 1 return ack_bit; // 返回AT24C02应答位
133 1 }
134
135 /**********************************************************/
136 void write_byte(uchar addr, uchar write_data)
137 // 在指定地址addr处写入数据write_data
138 {
139 1 start();
140 1 shout(OP_WRITE);
141 1 shout(addr);
142 1 shout(write_data);
143 1 stop();
144 1 delayms(10); // 写入周期
145 1 }
146
147 /**********************************************************/
148 void fill_byte(uchar fill_size,uchar fill_data)
149 // 填充数据fill_data到EEPROM内fill_size字节
150 {
151 1 uchar i;
152 1 for(i = 0; i < fill_size; i++)
153 1 {
154 2 write_byte(i, fill_data);
155 2 }
156 1 }
157
158 /**********************************************************/
159 uchar read_current()
160 // 在当前地址读取
161 {
162 1 uchar read_data;
163 1 start();
164 1 shout(OP_READ);
165 1 read_data = shin();
166 1 stop();
167 1 return read_data;
168 1 }
169
170 /**********************************************************/
171 uchar read_random(uchar random_addr)
172 // 在指定地址读取
173 {
174 1 start();
175 1 shout(OP_WRITE);
176 1 shout(random_addr);
177 1 return(read_current());
178 1 }
179
C51 COMPILER V7.06 24C08 07/28/2007 21:27:44 PAGE 4
180 /**********************************************************/
181 void delayms(uint ms)
182 // 延时子程序
183 {
184 1 uchar k;
185 1 while(ms--)
186 1 {
187 2 for(k = 0; k < 120; k++);
188 2 }
189 1 }
190
191
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 324 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 2 3
IDATA SIZE = ---- ----
BIT SIZE = ---- 1
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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