EEPRO使用多个扇区.docx

/*存贮多个变量两个long型和一个char型（long型的转换成4个char型）用两个不同的按键控制显示存贮的值*/#include #include typedef unsigned char uchar;typedef unsigned int uint;typedef unsigned long ulong;#define led_port P0 sbit dm=P23;/数码管控制芯片段码控制位sbit wm=P22;/数码管控制芯片位码控制位sbit gn=P20;sbit gn1=P21;ulong a,a1,v,v1;/uchar a;uchar temp1,temp2,temp3,temp4,temp5,temp6,temp7,temp8;bit bz1,bz2;uchar code dxian=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;/数码显示区0-9uchar code wxian=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;/选通哪位数码管控制位uchar bcd8;/数码管bcd码缓冲区void delay(uint t);/延时函数声明void bin_bcd();/bcd分离函数void smxs();/数码管显示函数void anjian();/掉电保持寄存器申明sfr IAP_DATA=0xe2; sfr IAP_ADDRH=0xe3;sfr IAP_ADDRL=0xe4;sfr IAP_CMD=0xe5;sfr IAP_TRIG=0xe6;sfr IAP_CONTR=0xe7;#define CMD_IDLE0#define CMD_READ1#define CMD_PROGRAM2#define CMD_ERASE3/定义Flash操作等待时间及允许IAP/ISP/EEPROM操作的常数/#define ENABLE_IAP 0x82/系统工作时钟20MHZ#define ENABLE_IAP 0x83/系统工作时钟40MHZ#define IAP_ADDRESS 0x2000#define IAP_ADDRESS1 0x2200void cc(uint addr);/ 擦除某一扇区void xcx(uint addr,uchar dat);/ 写一字节uchar dcx(uint addr);/ 读一字节void GB_IAP();/关闭IAP/IAP操作void delay(uint t)while(-t);void smxs()uchar i;for(i=0;i24)&0xff;temp2=(a16)&0xff;temp3=(a8)&0xff;temp4=a&0xff;void xs8_32()a = (ulong)(temp1)24)|(ulong)(temp2)16)|(ulong)(temp3)24)&0xff;temp6=(a116)&0xff;temp7=(a18)&0xff;temp8=a1&0xff;void xs8_321()a1 = (ulong)(temp5)24)|(ulong)(temp6)16)|(ulong)(temp7)8)|temp8;/*函数：主程序*/void main(void)uchar num;temp1=dcx(IAP_ADDRESS);temp2=dcx(IAP_ADDRESS+1);temp3=dcx(IAP_ADDRESS+2);temp4=dcx(IAP_ADDRESS+3);num=dcx(IAP_ADDRESS+4);temp5=dcx(IAP_ADDRESS1+5);temp6=dcx(IAP_ADDRESS1+6);temp7=dcx(IAP_ADDRESS1+7);temp8=dcx(IAP_ADDRESS1+8);num+;a=222222+num;a1=333333+num;xs32_81();/long型转成char型xs32_8();cc(IAP_ADDRESS); / 擦除第1个扇区（2000h21FFh）xcx(IAP_ADDRESS,temp1);xcx(IAP_ADDRESS+1,temp2); / 对EEPROM区2001h写入xcx(IAP_ADDRESS+2,temp3);xcx(IAP_ADDRESS+3,temp4);xcx(IAP_ADDRESS+4,num);cc(IAP_ADDRESS1);xcx(IAP_ADDRESS1+5,temp5);xcx(IAP_ADDRESS1+6,temp6);xcx(IAP_ADDRESS1+7,temp7);xcx(IAP_ADDRESS1+8,temp8);xs8_32(); /char型转成long型xs8_321();while(1) anjian();if(bz1=1)bin_bcd();if(bz2=1)bin_bcd1();smxs();void anjian()bit bzjia,bzjian,djia,djian;gn=1;gn1=1;/置1djia=gn;/读状态djian=gn1;if(djia!=1)if(bzjia!=1)bzjia=1;bz1=1;bz2=0;if(djia=1)bzjia=0;if(djian!=1)if(bzjian!=1)bzjian=1;bz1=0;bz2=1;if(djian=1)bzjian=0;/*函数：擦除某一扇区（每个扇区512字节）入口：addr = 某一扇区首地址 */void cc(uint addr) / 0x83(晶振5M) 0x82(晶振10M) 0x81(晶振20M) 0x80(晶振8; / IAP/IAP操作时的地址寄存器高八位。 /EA =0; IAP_TRIG = 0x46; / 在IAPEN(IAP_CONTR.7)=1时,对IAP_TRIG先写入46h， IAP_TRIG = 0xB9; / 再写入B9h,IAP/IAP命令才会生效。 /_nop_(); GB_IAP(); / 关闭IAP/IAP/*函数：写一字节入口：addr = 扇区单元地址 , dat = 待写入数据*/void xcx(uint addr,uchar dat) IAP_CONTR = ENABLE_IAP; IAP_CMD = CMD_PROGRAM; / 用户可以对Data Flash/EEPROM区进行字节编程 IAP_ADDRL = addr; IAP_ADDRH = addr8; IAP_DATA = dat; / 数据进IAP_DATA /EA = 0; IAP_TRIG = 0x46; IAP_TRIG = 0xB9; /_nop_(); GB_IAP(); / 关闭IAP/IAP/*函数：读一字节入口：addr = 扇区单元地址出口：dat = 读出的数据*/uchar dcx(uint addr) uchar dat;IAP_CONTR = ENABLE_IAP; IAP_CMD = CMD_READ; / 用户可以对Data Flash/EEPROM区进行字节读 IAP_ADDRL = addr; IAP_ADDRH = addr8; /EA = 0; IAP_TRIG = 0x46; IAP_TRIG = 0xB9; /_nop_(); dat = IAP_DATA; / 取出数据GB_IAP(); / 关闭IAP/IAP r