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SmartBike/i2c.LST

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Init
3 years ago
C51 COMPILER V9.56.0.0 I2C 04/06/2022 21:56:10 PAGE 1
C51 COMPILER V9.56.0.0, COMPILATION OF MODULE I2C
OBJECT MODULE PLACED IN i2c.OBJ
COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE i2c.c OPTIMIZE(8,SPEED) BROWSE DEBUG OBJECTEXTEND TABS(2)
line level source
1 #include"i2c.h"
2
3 /*******************************************************************************
4 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : Delay10us()
5 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>ʱ10us
6 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
7 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
8 *******************************************************************************/
9
10 void Delay10us()
11 {
12 1 unsigned char a,b;
13 1 for(b=1;b>0;b--)
14 1 for(a=2;a>0;a--);
15 1
16 1 }
17 /*******************************************************************************
18 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : I2cStart()
19 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>ʼ<EFBFBD>źţ<EFBFBD><EFBFBD><EFBFBD>SCLʱ<EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD><EFBFBD>ڸߵ<EFBFBD>ƽ<EFBFBD>ڼ<EFBFBD>SDA<EFBFBD>źŲ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>½<EFBFBD><EFBFBD><EFBFBD>
20 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
21 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
22 * <EFBFBD><EFBFBD>ע : <EFBFBD><EFBFBD>ʼ֮<EFBFBD><EFBFBD>SDA<EFBFBD><EFBFBD>SCL<EFBFBD><EFBFBD>Ϊ0
23 *******************************************************************************/
24
25 void I2cStart()
26 {
27 1 SDA=1;
28 1 Delay10us();
29 1 SCL=1;
30 1 Delay10us();//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SDA<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>>4.7us
31 1 SDA=0;
32 1 Delay10us();//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>>4us
33 1 SCL=0;
34 1 Delay10us();
35 1 }
36 /*******************************************************************************
37 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : I2cStop()
38 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>ֹ<EFBFBD>źţ<EFBFBD><EFBFBD><EFBFBD>SCLʱ<EFBFBD><EFBFBD><EFBFBD>źŸߵ<EFBFBD>ƽ<EFBFBD>ڼ<EFBFBD>SDA<EFBFBD>źŲ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
39 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
40 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
41 * <EFBFBD><EFBFBD>ע : <EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD>󱣳<EFBFBD>SDA<EFBFBD><EFBFBD>SCL<EFBFBD><EFBFBD>Ϊ1<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>߿<EFBFBD><EFBFBD><EFBFBD>
42 *******************************************************************************/
43
44 void I2cStop()
45 {
46 1 SDA=0;
47 1 Delay10us();
48 1 SCL=1;
49 1 Delay10us();//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4.7us
50 1 SDA=1;
51 1 Delay10us();
52 1 }
53 /*******************************************************************************
54 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : I2cSendByte(unsigned char dat)
55 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : ͨ<EFBFBD><EFBFBD>I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽڡ<EFBFBD><EFBFBD><EFBFBD>SCLʱ<EFBFBD><EFBFBD><EFBFBD>źŸߵ<EFBFBD>ƽ<EFBFBD>ڼ䣬<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>SDA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȶ<EFBFBD>
C51 COMPILER V9.56.0.0 I2C 04/06/2022 21:56:10 PAGE 2
56 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : num
57 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : 0<EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܷ<EFBFBD><EFBFBD><EFBFBD>0
58 * <EFBFBD><EFBFBD>ע : <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>SCL=0,SDA=1
59 *******************************************************************************/
60
61 unsigned char I2cSendByte(unsigned char dat)
62 {
63 1 unsigned char a=0,b=0;//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>255<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1us<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ255us<EFBFBD><EFBFBD>
64 1 for(a=0;a<8;a++)//Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ʼ
65 1 {
66 2 SDA=dat>>7; //<EFBFBD><EFBFBD>ʼ<EFBFBD>ź<EFBFBD>֮<EFBFBD><EFBFBD>SCL=0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>Ӹı<EFBFBD>SDA<EFBFBD>ź<EFBFBD>
67 2 dat=dat<<1;
68 2 Delay10us();
69 2 SCL=1;
70 2 Delay10us();//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>>4.7us
71 2 SCL=0;
72 2 Delay10us();//ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4us
73 2 }
74 1 SDA=1;
75 1 Delay10us();
76 1 SCL=1;
77 1 while(SDA)//<EFBFBD>ȴ<EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>ǵȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>SDA<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
78 1 {
79 2 b++;
80 2 if(b>200) //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2000usû<EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>Ӧ<EFBFBD>𣬱<EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>ս<EFBFBD><EFBFBD><EFBFBD>
81 2 {
82 3 SCL=0;
83 3 Delay10us();
84 3 return 0;
85 3 }
86 2 }
87 1 SCL=0;
88 1 Delay10us();
89 1 return 1;
90 1 }
91 /*******************************************************************************
92 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : I2cReadByte()
93 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : ʹ<EFBFBD><EFBFBD>I2c<EFBFBD><EFBFBD>ȡһ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
94 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
95 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : dat
96 * <EFBFBD><EFBFBD>ע : <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>SCL=0,SDA=1.
97 *******************************************************************************/
98
99 unsigned char I2cReadByte()
100 {
101 1 unsigned char a=0,dat=0;
102 1 SDA=1; //<EFBFBD><EFBFBD>ʼ<EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>֮<EFBFBD><EFBFBD>SCL<EFBFBD><EFBFBD><EFBFBD><EFBFBD>0
103 1 Delay10us();
104 1 for(a=0;a<8;a++)//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>8<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
105 1 {
106 2 SCL=1;
107 2 Delay10us();
108 2 dat<<=1;
109 2 dat|=SDA;
110 2 Delay10us();
111 2 SCL=0;
112 2 Delay10us();
113 2 }
114 1 return dat;
115 1 }
116
117
C51 COMPILER V9.56.0.0 I2C 04/06/2022 21:56:10 PAGE 3
118 /*******************************************************************************
119 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : void At24c02Write(unsigned char addr,unsigned char dat)
120 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>24c02<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַд<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
121 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
122 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
123 *******************************************************************************/
124
125 void At24c02Write(unsigned char addr,unsigned char dat)
126 {
127 1 I2cStart();
128 1 I2cSendByte(0xa0);//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
129 1 I2cSendByte(addr);//<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫд<EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD>ַ
130 1 I2cSendByte(dat); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
131 1 I2cStop();
132 1 }
133 /*******************************************************************************
134 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : unsigned char At24c02Read(unsigned char addr)
135 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>ȡ24c02<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
136 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
137 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
138 *******************************************************************************/
139
140 unsigned char At24c02Read(unsigned char addr)
141 {
142 1 unsigned char num;
143 1 I2cStart();
144 1 I2cSendByte(0xa0); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
145 1 I2cSendByte(addr); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD>ĵ<EFBFBD>ַ
146 1 I2cStart();
147 1 I2cSendByte(0xa1); //<EFBFBD><EFBFBD><EFBFBD>Ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
148 1 num=I2cReadByte(); //<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
149 1 I2cStop();
150 1 return num;
151 1 }
152
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 201 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)