main.c

单片机c语言程序设计100例--基于PIC+PROTEUS

//-----------------------------------------------------------------
//  名称: EEPROM数据访问与数码管显示 
//-----------------------------------------------------------------
//  说明: 本例运行时,按下K1将向EEPROM中写入0x00~0x0F,按下K2时写入16个 
//        随机字节,按下K3时读取EEPROM中的32个字节并逆向循环显示.
//
//-----------------------------------------------------------------
#include <pic.h> 
#include <stdlib.h>
#define INT8U   unsigned char
#define INT16U  unsigned int
#define _XTAL_FREQ 4000000UL
//按键定义
#define Write_00_0F_KEY_DN()    (RB0 == 0) //写00~0F
#define Write_Random_KEY_DN()   (RB1 == 0) //写随机字节
#define Loop_Show_KEY_DN()      (RB2 == 0) //循环显示
//蜂鸣器定义
#define BEEP() (RD7 = ~RD7)
//共阴数码管0~9的数字编码
const INT8U SEG_CODE[] = 
{ 
  0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,
  0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71
};
//存入EEPROM的16个字节
__EEPROM_DATA(0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77);
__EEPROM_DATA(0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF);
//显示缓冲,当前显示字节索引
INT8U Display_Buffer[32], Current_IDX = 0;
//-----------------------------------------------------------------
// 数码管显示字节
//-----------------------------------------------------------------
void Show_Count_ON_DSY()
{

} 

//-----------------------------------------------------------------
// 响铃子程序
//-----------------------------------------------------------------
void Play_BEEP()
{   
    INT16U i;
    for (i = 0 ; i< 300; i++) { BEEP(); __delay_us(200); }
}

//------------------------------------------------------------------
// 主程序
//------------------------------------------------------------------
void main() 
{ 
    INT8U Current_Data,LOOP_SHOW_FLAG = 0, i = 0;
    ADCON1 = 0x06;
    TRISB = 0xFF; RBPU = 0;               //配置输入端口,内部上拉
    TRISC = TRISD = 0x00;                 //配置输出端口
    srand(200);                           //设置随机种子
    while(1)
    { 
       start:
       //K1:循环显示------------------------------------------------
       if(Loop_Show_KEY_DN())
       {   //从EEPROM的0x00地址读取32个字节存入Display_Buffer


       }   
       //K2:写入0~15(0x00~0x0F)-------------------------------------
       if (Write_00_0F_KEY_DN())
       { 



       }
       //K3:写入20个随机数字节---------------------------------------
       if (Write_Random_KEY_DN())
       {  


       }
       if (LOOP_SHOW_FLAG)//----------------------------------------
       {  


       }
    }
}