📄 ds1302.lst
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C51 COMPILER V7.06 DS1302 06/16/2010 00:43:25 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE DS1302
OBJECT MODULE PLACED IN .\obj\DS1302.obj
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE DS1302.c BROWSE DEBUG OBJECTEXTEND PRINT(.\obj\DS1302.lst) OBJECT(.\obj\DS1
-302.obj)
stmt level source
1
2 #include "ds1302.h"
3
4 unsigned char time_buf1[8] = {20,10,6,5,12,55,00,6};//空年月日时分秒周
5 unsigned char time_buf[8] ; //空年月日时分秒周
6 /*------------------------------------------------
7 向DS1302写入一字节数据
8 ------------------------------------------------*/
9 void Ds1302_Write_Byte(unsigned char addr, unsigned char d)
10 {
11 1
12 1 unsigned char i;
13 1 RST_SET;
14 1
15 1 //写入目标地址：addr
16 1 addr = addr & 0xFE; //最低位置零
17 1 for (i = 0; i < 8; i ++)
18 1 {
19 2 if (addr & 0x01)
20 2 {
21 3 IO_SET;
22 3 }
23 2 else
24 2 {
25 3 IO_CLR;
26 3 }
27 2 SCK_SET;
28 2 SCK_CLR;
29 2 addr = addr >> 1;
30 2 }
31 1
32 1 //写入数据：d
33 1 for (i = 0; i < 8; i ++)
34 1 {
35 2 if (d & 0x01)
36 2 {
37 3 IO_SET;
38 3 }
39 2 else
40 2 {
41 3 IO_CLR;
42 3 }
43 2 SCK_SET;
44 2 SCK_CLR;
45 2 d = d >> 1;
46 2 }
47 1 RST_CLR; //停止DS1302总线
48 1 }
49 /*------------------------------------------------
50 从DS1302读出一字节数据
51 ------------------------------------------------*/
52
53 unsigned char Ds1302_Read_Byte(unsigned char addr)
54 {
C51 COMPILER V7.06 DS1302 06/16/2010 00:43:25 PAGE 2
55 1
56 1 unsigned char i;
57 1 unsigned char temp;
58 1 RST_SET;
59 1
60 1 //写入目标地址：addr
61 1 addr = addr | 0x01;//最低位置高
62 1 for (i = 0; i < 8; i ++)
63 1 {
64 2
65 2 if (addr & 0x01)
66 2 {
67 3 IO_SET;
68 3 }
69 2 else
70 2 {
71 3 IO_CLR;
72 3 }
73 2 SCK_SET;
74 2 SCK_CLR;
75 2 addr = addr >> 1;
76 2 }
77 1
78 1 //输出数据：temp
79 1 for (i = 0; i < 8; i ++)
80 1 {
81 2 temp = temp >> 1;
82 2 if (IO_R)
83 2 {
84 3 temp |= 0x80;
85 3 }
86 2 else
87 2 {
88 3 temp &= 0x7F;
89 3 }
90 2 SCK_SET;
91 2 SCK_CLR;
92 2 }
93 1
94 1 RST_CLR; //停止DS1302总线
95 1 return temp;
96 1 }
97
98 /*------------------------------------------------
99 向DS1302写入时钟数据
100 ------------------------------------------------*/
101 void Ds1302_Write_Time(void)
102 {
103 1
104 1 unsigned char i,tmp;
105 1 for(i=0;i<8;i++)
106 1 { //BCD处理
107 2 tmp=time_buf1[i]/10;
108 2 time_buf[i]=time_buf1[i]%10;
109 2 time_buf[i]=time_buf[i]+tmp*16;
110 2 }
111 1 Ds1302_Write_Byte(ds1302_control_add,0x00); //关闭写保护
112 1 //Ds1302_Write_Byte(ds1302_sec_add,0x80); //暂停
113 1 //Ds1302_Write_Byte(ds1302_charger_add,0xa9); //涓流充电
114 1 Ds1302_Write_Byte(ds1302_year_add,time_buf[1]); //年
115 1 Ds1302_Write_Byte(ds1302_month_add,time_buf[2]); //月
116 1 Ds1302_Write_Byte(ds1302_date_add,time_buf[3]); //日
C51 COMPILER V7.06 DS1302 06/16/2010 00:43:25 PAGE 3
117 1 Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
118 1 Ds1302_Write_Byte(ds1302_hr_add,time_buf[4]); //时
119 1 Ds1302_Write_Byte(ds1302_min_add,time_buf[5]); //分
120 1 Ds1302_Write_Byte(ds1302_sec_add,time_buf[6]); //秒
121 1 Ds1302_Write_Byte(ds1302_day_add,time_buf[7]); //周
122 1 Ds1302_Write_Byte(ds1302_control_add,0x80); //打开写保护
123 1 }
124
125 /*------------------------------------------------
126 从DS1302读出时钟数据
127 ------------------------------------------------*/
128 void Ds1302_Read_Time(void)
129 {
130 1 unsigned char i,tmp;
131 1 time_buf[1]=Ds1302_Read_Byte(ds1302_year_add); //年
132 1 time_buf[2]=Ds1302_Read_Byte(ds1302_month_add); //月
133 1 time_buf[3]=Ds1302_Read_Byte(ds1302_date_add); //日
134 1 time_buf[4]=Ds1302_Read_Byte(ds1302_hr_add); //时
135 1 time_buf[5]=Ds1302_Read_Byte(ds1302_min_add); //分
136 1 time_buf[6]=(Ds1302_Read_Byte(ds1302_sec_add))&0x7F;//秒
137 1 time_buf[7]=Ds1302_Read_Byte(ds1302_day_add); //周
138 1
139 1
140 1 for(i=0;i<8;i++)
141 1 { //BCD处理
142 2 tmp=time_buf[i]/16;
143 2 time_buf1[i]=time_buf[i]%16;
144 2 time_buf1[i]=time_buf1[i]+tmp*10;
145 2 }
146 1 }
147
148 /*------------------------------------------------
149 DS1302初始化
150 ------------------------------------------------*/
151 void Ds1302_Init(void)
152 {
153 1
154 1 RST_CLR; //RST脚置低
155 1 SCK_CLR; //SCK脚置低
156 1 Ds1302_Write_Byte(ds1302_sec_add,0x00);
157 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 321 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 16 ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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