蓝桥杯eeprom读写和储存上电次数

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蓝桥杯eeprom读写和储存上电次数

2023-10-21 04:36| 来源: 网络整理| 查看: 265

图片中前面两位数由按下S5加一，按下S4减一，最后按下S6储存在eeprom中，不按不储存。而图片后面两位数是自动储存上电次数，每上电加一，按下S7清零。在这里插入图片描述 main.c文件

#include "stc15f2k60s2.h" #include "iic.h" typedef unsigned char u8; typedef unsigned int u16; u8 code duan[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92, 0x82,0xf8,0x80,0x90,0xff,0xbf}; u8 temp=0; u8 dat=0; void delay(u16 i) { while(i--); } void Chan_hc573(chose) { switch(chose) { case 4: P2 = ( P2 & 0x1f ) | 0x80; break; case 5: P2 = ( P2 & 0x1f ) | 0xa0; break; case 6: P2 = ( P2 & 0x1f ) | 0xc0; break; case 7: P2 = ( P2 & 0x1f ) | 0xe0; break; } P2 = ( P2 & 0x1f ) | 0x00; } void Smg_display(u8 com,u8 dat) { P0=0xff; Chan_hc573(7); P0=0x01 Smg_display(0,duan[dat/10]); delay(500); Smg_display(1,duan[dat%10]); delay(500); Smg_display(2,duan[10]); delay(500); Smg_display(3,duan[10]); delay(500); Smg_display(4,duan[10]); delay(500); Smg_display(5,duan[10]); delay(500); Smg_display(6,duan[temp/10]); delay(500); Smg_display(7,duan[temp%10]); delay(500); Close_smg(); } void key_down() { if(P30==0) { delay(500); if(P30==0) { while(P30==0) {Display_temp();} temp=0; eeprom_wire(0x00,temp); } } if(P31==0) { delay(500); if(P31==0) { while(P31==0) {Display_temp();} eeprom_wire(0x01,dat); } } if(P32==0) { delay(500); if(P32==0) { while(P32==0) {Display_temp();} if(dat!=99) {dat++;} } } if(P33==0) { delay(500); if(P33==0) { while(P33==0) {Display_temp();} if(dat!=0) {dat--;} } } } void Init_system() { P0=0x00; Chan_hc573(5); P0=0xff; Chan_hc573(4); Close_smg(); } void main() { Init_system(); temp=eeprom_read(0x00); dat=eeprom_read(0x01); temp++; eeprom_wire(0x00,temp); while(1) { key_down(); Display_temp(); } }

iic.c文件

#include "reg52.h" #include "intrins.h" #include "iic.h" #define DELAY_TIME 5 #define SlaveAddrW 0xA0 #define SlaveAddrR 0xA1 //×ÜÏßÒý½Å¶¨Òå sbit SDA = P2^1; /* Êý¾ÝÏß */ sbit SCL = P2^0; /* Ê±ÖÓÏß */ void IIC_Delay(unsigned char i) { do{_nop_();} while(i--); } //×ÜÏßÆô¶¯Ìõ¼þ void IIC_Start(void) { SDA = 1; SCL = 1; IIC_Delay(DELAY_TIME); SDA = 0; IIC_Delay(DELAY_TIME); SCL = 0; } //×ÜÏßÍ£Ö¹Ìõ¼þ void IIC_Stop(void) { SDA = 0; SCL = 1; IIC_Delay(DELAY_TIME); SDA = 1; IIC_Delay(DELAY_TIME); } //·¢ËÍÓ¦´ð void IIC_SendAck(bit ackbit) { SCL = 0; SDA = ackbit; // 0£ºÓ¦´ð£¬1£º·ÇÓ¦´ð IIC_Delay(DELAY_TIME); SCL = 1; IIC_Delay(DELAY_TIME); SCL = 0; SDA = 1; IIC_Delay(DELAY_TIME); } //µÈ´ýÓ¦´ð bit IIC_WaitAck(void) { bit ackbit; SCL = 1; IIC_Delay(DELAY_TIME); ackbit = SDA; SCL = 0; IIC_Delay(DELAY_TIME); return ackbit; } //Í¨¹ýI2C×ÜÏß·¢ËÍÊý¾Ý void IIC_SendByte(unsigned char byt) { unsigned char i; for(i=0; i unsigned char i, da; for(i=0; i unsigned char dat; IIC_Start(); IIC_SendByte(0xa0); IIC_WaitAck(); IIC_SendByte(addr); IIC_WaitAck(); IIC_Stop(); IIC_Start(); IIC_SendByte(0xa1); IIC_WaitAck(); dat=IIC_RecByte(); IIC_SendAck(1); IIC_Stop(); return dat; } void eeprom_wire(unsigned char addr,unsigned char dat) { IIC_Start(); IIC_SendByte(0xa0); IIC_WaitAck(); IIC_SendByte(addr); IIC_WaitAck(); IIC_SendByte(dat); IIC_WaitAck(); IIC_Stop(); }

iic.h文件

#ifndef _IIC_H #define _IIC_H unsigned char eeprom_read(unsigned char addr); void eeprom_wire(unsigned char addr,unsigned char dat); #endif

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蓝桥杯eeprom读写和储存上电次数

蓝桥杯eeprom读写和储存上电次数

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