eeprom读写与数码管显示.c

单片机C语言程序设计实训100例--基于AVR+PROTEUS仿真

//-----------------------------------------------------------------
//  名称: EEPROM读写与数码管显示 
//-----------------------------------------------------------------
//  说明: 本例运行时,按下K1将向EEPROM中写入1~21,按下K2时写入无规律 
//        的21个数,按下K3时读取EEPROM中的21个数并循环显示.
//        所读写的21个数中,前20个在EEPROM中的地址是透明的(0x0001~0x0014),
//        最后的第21个数其地址是不透明的.
//  
//-----------------------------------------------------------------
#define  F_CPU   4000000UL //4M晶振
#include <avr/io.h>
#include <avr/eeprom.h>
#include <util/delay.h>
#include <stdlib.h>
#define INT8U   unsigned char
#define INT16U  unsigned int

//按键定义





//蜂鸣器定义
#define BEEP() (PORTD ^= 0x80)

//将字节变量eepromx分配于EEPROM存储器(地址不透明)
INT8U eepromx __attribute__((section("eeprom")));

//下面的数组也被分配于EEPROM,编译后生成EEP文件.
//(其中EEMEM即__attribute__((section("eeprom")))
//后续代码未使用本数组.
INT8U eeprom_array[] EEMEM = 
{
  0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
  0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
};

//0~9的数字编码,最后一位为黑屏
const INT8U SEG_CODE[] = 
{0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00};
//分解后的待显示数位
INT8U Display_Buffer[] = {0,0};
//-----------------------------------------------------------------
// 数码管显示字节
//-----------------------------------------------------------------
void Show_Count_ON_DSY()
{   



} 

//-----------------------------------------------------------------
// 响铃子程序
//-----------------------------------------------------------------
void Play_BEEP()
{   


} 

//------------------------------------------------------------------
// 主程序
//------------------------------------------------------------------
int main() 
{ 
	INT8U Current_Data,LOOP_SHOW_FLAG = 0;
	INT16U i,Current_Read_Addr = 0x0001; 
	DDRC = 0xFF; PORTD = 0xFF;           //配置输出端口
    DDRD = 0xFF; PORTD = 0xFF;
    DDRB = 0x00; PORTB = 0xFF;           //配置输入端口
    srand(200);                          //设置随机种子
    while(1)
    { 
       start:
	   //K1:循环显示------------------------------------------------
	   if(Loop_Show_Key_DOWN())
	   {





	   }   
	   //K2:写入1~21(0x01~0x15)-------------------------------------
	   if (Write_1_21_Key_DOWN())
	   {





	   }
       //K3:写入21个随机数------------------------------------------
	   if (Write_Random_Key_DOWN())
	   {







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




	   }
    }
}