📄 flash.lst
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C51 COMPILER V6.12 FLASH 08/20/2006 19:41:24 PAGE 1
C51 COMPILER V6.12, COMPILATION OF MODULE FLASH
OBJECT MODULE PLACED IN Flash.OBJ
COMPILER INVOKED BY: C:\keil\C51\BIN\c51.exe Flash.c DB OE
stmt level source
*** WARNING C500 IN LINE 1 OF FLASH.C: MISSING DEVICE (SECURITY KEY NOT FOUND)
1 //头文件
2 /////////////////////////////
3 #include "c8051F320.h"
4 #include "stdio.h"
5 ////////////////////////////////////////////////////////////////////////////////////////////////////
6 //位定义
7 sbit FLASH_WP =P2^0; //命令锁存
8 sbit FLASH_WE =P2^1; //地址锁存
9 sbit FLASH_ALE =P2^2; //写保护
10 sbit FLASH_CLE =P2^3; //片选
11 sbit FLASH_CE =P2^4; //写使能
12 sbit FLASH_RE =P2^5; //读使能
13 sbit FLASH_RB =P2^6; //忙指示
14 sbit FLASH_SE =P2^7;
15
16 //P1口为数据口
17 //注释掉的函数在需要时可以取掉注释即可
18 ///////////////////////////////////////////////////////////////////////////////////////////////////
19 //FLASH函数声明
20 void Flash_Init(void); //FLASH初始化
21 //unsigned int Get_Flash_ID(void); //读FLASH的ID号
22 //unsigned char Get_Flash_Status(void); //读FLASH的状态
23 unsigned char Flash_Erase_Block(unsigned int BlockNum); //擦除FLASH中的第BlockNum个BLOCK,擦除成功则返回1
24 void Flash_Read_Page(unsigned int BLockNum,unsigned char BlockPageNum,unsigned char *P,unsigned int Dat
-a_Length);
25 //读出第BlockNum个BLOCK中第BlockPageNum个PAGE中的内容，长度为Data_Length
26 unsigned char Flash_Write_Page(unsigned int BLockNum,unsigned char BlockPageNum,unsigned char *P,unsigned
- int Data_Length);
27 //意义同上
28 void Flash_Write_Command(unsigned char command); //写命令
29 void Flash_Write_Address(unsigned char address); //写地址
30 void Flash_Write_Data(unsigned char num); //写一字节数据
31 unsigned char Flash_Read_Data(void); //读一字节数据
32
33 //void Test_Flash(void); //FLASH测试函数，首先读取FLASH的ID号，然后写入512字节数据，再读出来，判断是否正
-确
34
35 extern void Time_Delay(unsigned int time);
36 ////////////////////////////////////////////////////////////////////////////////////////////////////
37
38
39 void Flash_Init()
40 {
41 1 unsigned int i=0;
42 1 P1=0xff;
43 1 P2MDOUT=0xff;
44 1 FLASH_SE=0;FLASH_WP=1;FLASH_CE=0;FLASH_ALE=0;
45 1 FLASH_CLE=0;FLASH_WE=1;FLASH_RE=1;FLASH_RB=1; //控制位的初始状态
46 1 Flash_Write_Command(0xff); //复位命令
47 1 Time_Delay(50); //延时50ms
48 1 }
49 /*
50 unsigned int Get_Flash_ID(void)
51 {
C51 COMPILER V6.12 FLASH 08/20/2006 19:41:24 PAGE 2
52 unsigned int id=0;
53 Flash_Write_Command(0x90); //读ID命令
54 Flash_Write_Address(0x00); //地址
55 id=Flash_Read_Data(); //读ID的高8位
56 id *=256;
57 id+=Flash_Read_Data(); //读ID的低8位
58 return(id);
59 }
60 */
61 /*
62 unsigned char Get_Flash_Status()
63 {
64 unsigned char status=0;
65 Flash_Write_Command(0x70);
66 status=Flash_Read_Data();
67 return(status);
68 }*/
69
70 unsigned char Flash_Erase_Block(unsigned int BlockNum)
71 {
72 1 unsigned char Address_M=0,Address_H=0,Address_HH=0;
73 1 unsigned long PageNum=0;
74 1 unsigned char status=0;
75 1 PageNum=BlockNum*32; //计算PAGE地址（这是该BLOCK中的第一个PAGE），每个BLOCK含32个PAGE
76 1 Address_M=PageNum & 0xff;
77 1 Address_H=(PageNum>>8) & 0xff; //擦除BLOCK时，只需要输入地址的高两字节，此处为计算地址的高两字节
78 1 Address_HH=(PageNum>>8) & 0xff;
79 1
80 1 Flash_Write_Command(0x60); //发送擦除命令
81 1 Flash_Write_Address(Address_M);
82 1 Flash_Write_Address(Address_H); //发送地址
83 1 Flash_Write_Address(Address_HH);
84 1 Flash_Write_Command(0xd0); //启动擦除
85 1 P2MDOUT =0xbf;
86 1 FLASH_RB=1; //FLASH_RB漏极开路输出
87 1 while(!FLASH_RB) //判断是否擦除完毕
88 1 {}
89 1
90 1 Flash_Write_Command(0x70); //发送读状态命令
91 1 status=Flash_Read_Data(); //读状态
92 1 if(status & 0x01) //如果有错误，则返回false
93 1 {
94 2 return(0);
95 2 }
96 1 else //否则返回true
97 1 {
98 2 return(1);
99 2 }
100 1 }
101
102 void Flash_Read_Page(unsigned int BLockNum,unsigned char BlockPageNum,unsigned char *P,unsigned int Data_L
-ength)
103 {
104 1 unsigned int i=0;
105 1 unsigned long PageNum=0;
106 1 unsigned char Address_L=0,Address_M=0,Address_H=0,Address_HH=0;
107 1 PageNum=BLockNum*32+BlockPageNum; //计算该PAGE在整个FLASH中的PAGE地址
108 1 Address_L=0;
109 1 Address_M=PageNum & 0xff;
110 1 Address_H=(PageNum>>8) & 0xff;
111 1 Address_HH=(PageNum>>8) & 0xff;
112 1
C51 COMPILER V6.12 FLASH 08/20/2006 19:41:24 PAGE 3
113 1 Flash_Write_Command(0x00); //将内部指针指向A区
114 1 Flash_Write_Address(Address_L); //写地址
115 1 Flash_Write_Address(Address_M);
116 1 Flash_Write_Address(Address_H);
117 1 Flash_Write_Address(Address_HH);
118 1 for(i=0;i<Data_Length;i++)
119 1 {
120 2 *(P+i)=Flash_Read_Data(); //读数据
121 2 }
122 1
123 1 }
124
125 unsigned char Flash_Write_Page(unsigned int BLockNum,unsigned char BlockPageNum,unsigned char *P,unsigned
-int Data_Length)
126 {
127 1 unsigned int i=0;
128 1 unsigned long PageNum=0;
129 1 unsigned char Address_L=0,Address_M=0,Address_H=0,Address_HH=0;
130 1 unsigned char status=0;
131 1 PageNum=BLockNum*32+BlockPageNum; //计算该PAGE在整个FLASH中的PAGE地址
132 1 Address_L=0;
133 1 Address_M=PageNum & 0xff;
134 1 Address_H=(PageNum>>8) & 0xff;
135 1 Address_HH=(PageNum>>8) & 0xff;
136 1
137 1 Flash_Write_Command(0x00); //将内部指针指向A区
138 1 Flash_Write_Command(0x80); //写FLASH命令
139 1 Flash_Write_Address(Address_L); //写地址
140 1 Flash_Write_Address(Address_M);
141 1 Flash_Write_Address(Address_H);
142 1 Flash_Write_Address(Address_HH);
143 1 for(i=0;i<Data_Length;i++)
144 1 {
145 2 Flash_Write_Data(*(P+i)); //将数据写入缓冲区
146 2 }
147 1 Flash_Write_Command(0x10); //启动写入，将数据从缓冲区写入到FLASH
148 1 P2MDOUT =0xbf; //FLASH_RB漏极开路输出
149 1 FLASH_RB=1;
150 1 while(!FLASH_RB) //判断是否操作完毕
151 1 {}
152 1
153 1 Flash_Write_Command(0x70); //发送读状态命令
154 1 status=Flash_Read_Data(); //读状态
155 1 if(status & 0x01) //如果有错误，则返回false
156 1 {
157 2 return(0);
158 2 }
159 1 else //否则返回true
160 1 {
161 2 return(1);
162 2 }
163 1
164 1 }
165
166 void Flash_Write_Command(unsigned char command)
167 {
168 1 FLASH_ALE=0; //地址锁存禁止
169 1 FLASH_CLE=1; //命令锁存使能
170 1 FLASH_WE =0; //写使能信号，上升沿有效
171 1 P1MDOUT =0xff; //设置P1为推挽输出
172 1 P1=command;
173 1 FLASH_WE =1; //命令在上升沿写入
C51 COMPILER V6.12 FLASH 08/20/2006 19:41:24 PAGE 4
174 1 FLASH_CLE=0; //命令锁存禁止
175 1 FLASH_ALE=1;
176 1 }
177
178 void Flash_Write_Address(unsigned char address)
179 {
180 1 FLASH_WE=1;
181 1 FLASH_CLE=0; //命令锁存禁止
182 1 FLASH_ALE=1; //地址锁存使能
183 1 FLASH_WE =0; //写使能信号，上升沿有效
184 1 P1MDOUT =0xff; //设置P1为推挽输出
185 1 P1=address;
186 1 FLASH_WE =1; //上升沿写入
187 1 FLASH_ALE=0; //地址锁存禁止
188 1 }
189
190 void Flash_Write_Data(unsigned char num)
191 {
192 1 FLASH_WE=1;
193 1 FLASH_CLE=0; //命令锁存禁止
194 1 FLASH_ALE=0; //地址锁存禁止
195 1 FLASH_WE =0; //写使能信号, 上升沿有效
196 1 P1MDOUT =0xff; //设置P1为推挽输出
197 1 P1=num;
198 1 FLASH_WE =1; //命令在上升沿写入
199 1 }
200
201 unsigned char Flash_Read_Data(void)
202 {
203 1 unsigned char num=0;
204 1 FLASH_CLE =0; //命令锁存禁止
205 1 FLASH_ALE =0; //地址锁存禁止
206 1 P1MDOUT =0x00; //设置P1为漏极开路输出
207 1 P1 =0xff;
208 1 FLASH_RE =0; //读信号使能
209 1 P2MDOUT =0xbf; //FLASH_RB漏极开路输出
210 1 FLASH_RB=1;
211 1 while(!FLASH_RB) //判断是否操作完毕
212 1 {}
213 1 num=P1;
214 1 FLASH_RE=1;
215 1 return(num);
216 1 }
217 /*
218 void Test_Flash()
219 {
220 unsigned int Flash_ID;
221 xdata unsigned char Buffer[512];
222 unsigned int i=0,dat=0;
223 Flash_ID=Get_Flash_ID();
224 printf("Flash_ID is %u\n",Flash_ID);
225
226 for(i=0;i<512;i++)
227 {Buffer[i]=i;}
228 for(i=0;i<256;i++)
229 {Buffer[256+i]=i;}
230 Flash_Write_Page(1,1,Buffer,512);
231 for(i=0;i<512;i++)
232 {Buffer[i]=0;}
233 Flash_Read_Page(1,1,Buffer,512);
234 for(i=0;i<512;i++)
235 {
C51 COMPILER V6.12 FLASH 08/20/2006 19:41:24 PAGE 5
236 dat=Buffer[i];
237 printf("the No.%u data is %u\n",i,dat);
238 }
239
240 }*/
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 576 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 47
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 1 WARNING(S), 0 ERROR(S)
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