#include <reg52.h> //调用单片机头文件
#define uchar unsigned char //无符号字符型 宏定义 变量范围0~255
#define uint unsigned int //无符号整型 宏定义 变量范围0~65535
#include <intrins.h>
#define RdCommand 0x01 //定义ISP的操作命令
#define PrgCommand 0x02
#define EraseCommand 0x03
#define Error 1
#define Ok 0
#define WaitTime 0x01 //定义CPU的等待时间
sfr ISP_DATA=0xe2; //Flash数据寄存器地址(E2h)
sfr ISP_ADDRH=0xe3; //Flash高字节寄存器地址(E3h)
sfr ISP_ADDRL=0xe4; //Flash低字节寄存器地址(E4h)
sfr ISP_CMD=0xe5; //Flash命令模式寄存器地址(E5h)
sfr ISP_TRIG=0xe6; //Flash命令触发寄存器地址(E6h)
sfr ISP_CONTR=0xe7; //ISP/IAP控制寄存器地址(E2h)
sbit dula=P2^6;//U1锁存器的锁存端 000001111111 显示函数11111100000
sbit wela=P2^7;//申明U2锁存器的锁存
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar num;//定时器要用到
void ISP_IAP_enable(void); //打开ISP,IAP功能
void ISP_IAP_disable(void); //关闭ISP,IAP功能
void ISPgoon(void); //公用的触发代码
uchar byte_read(unsigned int byte_addr);//字节读
void SectorErase(unsigned int sector_addr);//扇区擦除
void byte_write(unsigned int byte_addr, unsigned char original_data);//字节写
void display(); //000033333 显示函数3333300000
//数码管段选定义
uchar code smg_du[]={0x28,0xee,0x32,0xa2,0xe4,0xa1,0x21,0xea,0x20,0xa0,
0x60,0x25,0x39,0x26,0x31,0x71,0xff}; //断码
//数码管位选定义
uchar code smg_we[] = {0xef,0xdf,0xbf,0x7f};
uchar dis_smg[8] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8};
uchar smg_i = 3; //显示数码管的个位数
sbit dq = P2^4; //18b20 IO口的定义
sbit pwm = P2^3; //蜂鸣器IO口定义
其中,
//数码管段选定义
uchar code smg_du[]={0x28,0xee,0x32,0xa2,0xe4,0xa1,0x21,0xea,0x20,0xa0,
0x60,0x25,0x39,0x26,0x31,0x71,0xff}; //断码
是什么意思啊? 0X28显示的并不是0吧? 这段话是什么意思呢?断码是什么?
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