Design and manufacture of 51 single chip microcomputer solar charging treasure with low voltage alarm (complete code data)

The device uses solar panels to automatically supply power to lithium batteries from time to time , Simultaneous addition 51 Single chip computer through adc0809 Chip analysis of lithium battery power supply , And can carry out low-voltage alarm , Support two ways 5V1A Simultaneous discharge , Add three buttons , Support menu switching display and other functions . And the module data used in relevant design .
The module used ：
STC89C51 Minimum system of single chip microcomputer
1602LCD
ADC0809 Analog to digital conversion chip
DC-DC Boost chip
Solar panels
Lithium battery charge and discharge management module
3.7V The lithium battery （1S）
A physical picture ：
Solar charging module ：

Boost module ：

void Hardware_Init(void)
{
    
    
    TMOD=0x02;                     // Set timer  T0 Operation mode 
    TH0=216;                       // utilize T0 Interrupt generation CLK The signal 
    TL0=216;  
    TR0=1;                         // Start timer T0
    ET0=1;                         // To configure adc0809
    STR=0;
    OE=0;
    EA=1;                          // General interruption 
        delayms(50);
        LcdInit();                 //lcd initialization 
        for(i=0;i<14;i++)LcdWriteData(welcome[i]);
        led_warn();                // Small light alarm 
        delayms(100);
        LcdWriteCom(0x01);  	   // Clear the screen 
        for(i=0;i<12;i++)LcdWriteData(instruction1[i]);
        LcdWriteCom(0x40+0x80);
        for(i=0;i<9;i++)LcdWriteData(instruction2[i]);
        LED=1;
        delayms(100);
}
/*******************************************************************************  Function name ： key_scan（）  work   can ：  Key scan function  *******************************************************************************/
uint update=0;
void key_scan(void)
{
    
   if(KEY1==0)
   {
    
           delayms(5);                                        
         if(KEY1==0)
         {
    
                 while(KEY1==0);                                 
                 LcdWriteCom(0x01);               
                for(i=0;i<15;i++)LcdWriteData(I_Disp[i]);
                update=1;                        // Turn on real-time update flag bit , Update in the main function 
         }
   }
   if(KEY2==0)
   {
    
           delayms(5);
         if(KEY2==0)
         {
    
                 while(KEY2==0);
                 LcdWriteCom(0x01);                        
                 update=0;                       // Turn off real-time update flag bit 
                 LcdWriteCom(0x80);
                 for(i=0;i<12;i++)LcdWriteData(instruction1[i]);
                 LcdWriteCom(0x40+0x80);
                 for(i=0;i<9;i++)LcdWriteData(instruction2[i]);
         }
   }
   if(KEY3==0)
   {
    
           delayms(5);
         if(KEY3==0)
         {
    
                 while(KEY3==0);                   // Additional tasks can be added 
                LED=!LED;
         }
   }
}
/*******************************************************************************  Function name ： battery_check（）  work   can ：  Battery detection and alarm function  *******************************************************************************/
void battery_check(void)
{
    
        AD();                                //adc Data analysis 
        if(update)
        {
    
                LcdDisplay();
                delayms(4);                // It is suggested to add delay , Otherwise, the two digits after the decimal point change too fast to see clearly 
        }
        if(KEY1&&KEY2&&KEY3) // Due to the key pin and adc Pin time-sharing multiplexing , So when keys use pins , stop it adc Use 
        {
                                      // otherwise adc The data is not accurate , Will affect the accuracy of the alarm 
           if(disbuff[0]<=3&&disbuff[1]<=2)led_warn();// Alarm function , Preset 3.2V
        }
}

/*******************************************************************************  Function name ： main（）  work   can ：  The main function   notes   It means ：  In the main function, due to the addition delay , Therefore, the key scanning needs to be pressed for a long time to respond （ Non interrupting key trigger ） *******************************************************************************/
void main(void)
{
    
        Hardware_Init();                // System initialization 
        while(1)
          {
    
                key_scan();             // Key scan 
                battery_check();        // Voltage detection display 、 Call the police 
          }         
}

This post is original ！
Time ：2021/01/
I wish good ！