📄 7279clailai.lst
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C51 COMPILER V7.50 7279CLAILAI 04/04/2007 08:24:13 PAGE 1
C51 COMPILER V7.50, COMPILATION OF MODULE 7279CLAILAI
OBJECT MODULE PLACED IN I:\7279C发送接收程序\7279CLAILAI.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE I:\7279C发送接收程序\7279CLAILAI.C DB SB OE OT(0)
line level source
1 #include<reg51.h>
2 //***函数定义***
3 void long_delay(void); //***长延时***
4 void short_delay(void); //***短延时***
5 void delay10ms(unsigned char); //延时10MS
6 void write7279(unsigned char, unsigned char);// 写入到HD7279
7 unsigned char read7279(unsigned char);// 从HD7279读出
8 void send_byte(unsigned char); //发送一个字节
9 unsigned char receive_byte(void); //接收一个字节
10
11 //**定义变量及I/O口**
12
13 unsigned char digit[5];
14 unsigned char key_number, j, k;
15 unsigned int tmr,sum=0;
16 unsigned char cnter=1;
17
18 sbit cs=P2^3; // cs at P1.0
19 sbit clk=P2^2; // clk 连接于P1.1
20 sbit dat=P2^1; // data 连接于P1.2
21 sbit key=P2^0; // key 连接于P1.3
22
23 //****** HD7279A指令 ******
24 #define CMD_RESET 0xa4 //复位（清除）指令
25 #define CMD_TEST 0xbf //测试指令
26 #define DECODE0 0x80
27 #define DECODE1 0xc8
28 #define CMD_READ 0x15
29 #define UNDECODE 0x90
30 #define RTL_CYCLE 0xa3
31 #define RTR_CYCLE 0xa2
32 #define RTL_UNCYL 0xa1
33 #define RTR_UNCYL 0xa0
34 #define ACTCTL 0x98
35 #define SEGON 0xe0
36 #define SEGOFF 0xc0
37 #define BLINKCTL 0x88
38
39 //***主程序***
40 void main()
41 {
42 1 while(1)
43 1 {
44 2 for (tmr=0;tmr<0x2000;tmr++); //上电延时
45 2 send_byte(CMD_RESET); // 复位HD7279A
46 2 while (1)
47 2 {
48 3 if (!key) //如果有键按下
49 3 {
50 4 key_number=read7279(CMD_READ);//读出键码
51 4 //P0=key_number;
52 4 //sum=sum+cnter*key_number;
53 4 //cnter=cnter*10;
54 4 write7279(DECODE1+7,key_number&0x0F);//显示键码
55 4 send_byte(RTL_CYCLE); // 循环左移
C51 COMPILER V7.50 7279CLAILAI 04/04/2007 08:24:13 PAGE 2
56 4 delay10ms(12);
57 4 while (!key); //等待按键放开
58 4 cnter+=1;
59 4 }
60 3 }
61 2 cnter=0;
62 2 }
63 1 }
64
65
66
67
68
69
70
71
72
73
74
75 //**********************************************
76 //****写****
77 void write7279(unsigned char cmd, unsigned char dta)
78 {
79 1 send_byte (cmd);
80 1 send_byte (dta);
81 1 }
82
83 //*********读出********
84 unsigned char read7279(unsigned char command)
85 {
86 1 send_byte(command);
87 1 return(receive_byte());
88 1 }
89
90 //***发送***
91 void send_byte( unsigned char out_byte)
92 {
93 1 unsigned char i;
94 1 cs=0;
95 1 long_delay();
96 1 for (i=0;i<8;i++)
97 1 {
98 2 if (out_byte&0x80)
99 2 {dat=1;}
100 2 else
101 2 {dat=0;}
102 2 clk=1;
103 2 short_delay();
104 2 clk=0;
105 2 short_delay();
106 2 out_byte=out_byte*2;
107 2 }
108 1 dat=0;
109 1 }
110
111 //***接收***
112 unsigned char receive_byte(void)
113 {
114 1 unsigned char i, in_byte;
115 1 dat=1; //设为输入状态
116 1 long_delay();
117 1 for (i=0;i<8;i++)
C51 COMPILER V7.50 7279CLAILAI 04/04/2007 08:24:13 PAGE 3
118 1 {
119 2 clk=1;
120 2 short_delay();
121 2 in_byte=in_byte*2;
122 2 if (dat)
123 2 {in_byte=in_byte|0x01;}
124 2 clk=0;
125 2 short_delay();
126 2 }
127 1 dat=0;
128 1 return (in_byte);
129 1 }
130
131 //***长延时***
132 void long_delay(void)
133 {
134 1 unsigned char i;
135 1 for (i=0;i<0x30;i++);
136 1 }
137
138 //***短延时***
139 void short_delay(void)
140 {
141 1 unsigned char i;
142 1 for (i=0;i<8;i++);
143 1 }
144 // ********************* 延时n*10ms **********************
145 void delay10ms(unsigned char time)
146 {
147 1 unsigned char i;
148 1 unsigned int j;
149 1 for (i=0;i<time;i++)
150 1 {
151 2 for(j=0;j<0x390;j++)
152 2 {
153 3 if (!key)
154 3 {
155 4 //key_int();
156 4 }
157 3 }
158 2 }
159 1 }
160
161
162
C51 COMPILER V7.50 7279CLAILAI 04/04/2007 08:24:13 PAGE 4
NAME CLASS MSPACE TYPE OFFSET SIZE
==== ===== ====== ==== ====== ====
receive_byte . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
in_byte. . . . . . . . . . . . . . . AUTO DATA U_CHAR 0001H 1
P2 . . . . . . . . . . . . . . . . . . SFR DATA U_CHAR 00A0H 1
digit. . . . . . . . . . . . . . . . . PUBLIC DATA ARRAY 0000H 5
cnter. . . . . . . . . . . . . . . . . PUBLIC DATA U_CHAR 0005H 1
_send_byte . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
out_byte . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0001H 1
long_delay . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
short_delay. . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
main . . . . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
_delay10ms . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
time . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
i. . . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0001H 1
j. . . . . . . . . . . . . . . . . . AUTO DATA U_INT 0002H 2
key_number . . . . . . . . . . . . . . PUBLIC DATA U_CHAR 0006H 1
dat. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A1H 1
clk. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A2H 1
key. . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A0H 1
tmr. . . . . . . . . . . . . . . . . . PUBLIC DATA U_INT 0007H 2
cs . . . . . . . . . . . . . . . . . . ABSBIT ----- BIT 00A3H 1
sum. . . . . . . . . . . . . . . . . . PUBLIC DATA U_INT 0009H 2
_read7279. . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
command. . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
_write7279 . . . . . . . . . . . . . . PUBLIC CODE PROC 0000H -----
cmd. . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0000H 1
dta. . . . . . . . . . . . . . . . . AUTO DATA U_CHAR 0001H 1
j. . . . . . . . . . . . . . . . . . . PUBLIC DATA U_CHAR 000BH 1
k. . . . . . . . . . . . . . . . . . . PUBLIC DATA U_CHAR 000CH 1
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 268 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 26 ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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